summaryrefslogtreecommitdiffstats
path: root/c/src/lib/libbsp
diff options
context:
space:
mode:
authorSebastian Huber <sebastian.huber@embedded-brains.de>2018-04-23 09:48:52 +0200
committerSebastian Huber <sebastian.huber@embedded-brains.de>2018-04-23 15:18:43 +0200
commit276afd2b4812bef2476456476af7e5392102d8a6 (patch)
treeef3af8262404667bb4fd6fe6c090ea800112554e /c/src/lib/libbsp
parentbsps: Move I2C drivers to bsps (diff)
downloadrtems-276afd2b4812bef2476456476af7e5392102d8a6.tar.bz2
bsps: Move SPI drivers to bsps
This patch is a part of the BSP source reorganization. Update #3285.
Diffstat (limited to 'c/src/lib/libbsp')
-rw-r--r--c/src/lib/libbsp/arm/atsam/Makefile.am6
-rw-r--r--c/src/lib/libbsp/arm/atsam/spi/atsam_spi_bus.c614
-rw-r--r--c/src/lib/libbsp/arm/atsam/spi/atsam_spi_init.c110
-rw-r--r--c/src/lib/libbsp/arm/atsam/spi/sc16is752.c85
-rw-r--r--c/src/lib/libbsp/arm/imx/Makefile.am2
-rw-r--r--c/src/lib/libbsp/arm/imx/spi/imx-ecspi.c449
-rw-r--r--c/src/lib/libbsp/arm/raspberrypi/Makefile.am2
-rw-r--r--c/src/lib/libbsp/arm/raspberrypi/spi/spi.c657
-rw-r--r--c/src/lib/libbsp/m68k/gen68360/spi/m360_spi.c852
-rw-r--r--c/src/lib/libbsp/m68k/gen68360/spi/m360_spi.h161
-rw-r--r--c/src/lib/libbsp/powerpc/gen83xx/Makefile.am2
-rw-r--r--c/src/lib/libbsp/powerpc/gen83xx/spi/spi_init.c416
-rw-r--r--c/src/lib/libbsp/powerpc/tqm8xx/Makefile.am2
-rw-r--r--c/src/lib/libbsp/powerpc/tqm8xx/spi/spi.c873
14 files changed, 7 insertions, 4224 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/Makefile.am b/c/src/lib/libbsp/arm/atsam/Makefile.am
index 3c3a88e0ec..af0185a41e 100644
--- a/c/src/lib/libbsp/arm/atsam/Makefile.am
+++ b/c/src/lib/libbsp/arm/atsam/Makefile.am
@@ -135,9 +135,9 @@ librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/atsam/i2c/atsam_i2c_bus.c
librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/atsam/i2c/atsam_i2c_init.c
# SPI
-librtemsbsp_a_SOURCES += spi/atsam_spi_bus.c
-librtemsbsp_a_SOURCES += spi/atsam_spi_init.c
-librtemsbsp_a_SOURCES += spi/sc16is752.c
+librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/atsam/spi/atsam_spi_bus.c
+librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/atsam/spi/atsam_spi_init.c
+librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/atsam/spi/sc16is752.c
# RTC
librtemsbsp_a_SOURCES += ../../../../../../bsps/shared/dev/rtc/rtc-support.c
diff --git a/c/src/lib/libbsp/arm/atsam/spi/atsam_spi_bus.c b/c/src/lib/libbsp/arm/atsam/spi/atsam_spi_bus.c
deleted file mode 100644
index 35f44f525d..0000000000
--- a/c/src/lib/libbsp/arm/atsam/spi/atsam_spi_bus.c
+++ /dev/null
@@ -1,614 +0,0 @@
-/* ---------------------------------------------------------------------------- */
-/* Atmel Microcontroller Software Support */
-/* SAM Software Package License */
-/* ---------------------------------------------------------------------------- */
-/* Copyright (c) 2015, Atmel Corporation */
-/* Copyright (c) 2016, embedded brains GmbH */
-/* */
-/* All rights reserved. */
-/* */
-/* Redistribution and use in source and binary forms, with or without */
-/* modification, are permitted provided that the following condition is met: */
-/* */
-/* - Redistributions of source code must retain the above copyright notice, */
-/* this list of conditions and the disclaimer below. */
-/* */
-/* Atmel's name may not be used to endorse or promote products derived from */
-/* this software without specific prior written permission. */
-/* */
-/* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */
-/* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */
-/* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, */
-/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
-/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
-/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
-/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
-/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */
-/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
-/* ---------------------------------------------------------------------------- */
-
-#include <bsp/atsam-clock-config.h>
-#include <bsp/atsam-spi.h>
-#include <bsp/iocopy.h>
-
-#include <dev/spi/spi.h>
-
-#include <string.h>
-
-#define MAX_SPI_FREQUENCY 50000000
-
-#define DMA_NR_DESC_PER_DIR 3
-#define DMA_DESC_ALLIGNMENT 4
-
-#define DMA_BUF_RX 0
-#define DMA_BUF_TX 1
-#define DMA_BUF_DIRS 2
-
-struct atsam_spi_xdma_buf {
- LinkedListDescriporView0 desc[DMA_NR_DESC_PER_DIR];
- uint8_t leadbuf[CPU_CACHE_LINE_BYTES];
- uint8_t trailbuf[CPU_CACHE_LINE_BYTES];
-};
-
-typedef struct {
- spi_bus base;
- bool msg_cs_change;
- const spi_ioc_transfer *msg_current;
- const spi_ioc_transfer *msg_next;
- uint32_t msg_todo;
- int msg_error;
- rtems_id msg_task;
- Spid spi;
- uint32_t dma_tx_channel;
- uint32_t dma_rx_channel;
- struct atsam_spi_xdma_buf *dma_bufs;
- size_t leadbuf_rx_buffered_len;
- size_t trailbuf_rx_buffered_len;
- int transfer_in_progress;
- bool chip_select_active;
- bool chip_select_decode;
-} atsam_spi_bus;
-
-static void atsam_spi_wakeup_task(atsam_spi_bus *bus)
-{
- rtems_status_code sc;
-
- sc = rtems_event_transient_send(bus->msg_task);
- assert(sc == RTEMS_SUCCESSFUL);
-}
-
-static uint8_t atsam_calculate_dlybcs(uint16_t delay_in_us)
-{
- return (
- (BOARD_MCK / delay_in_us) < 0xFF) ?
- (BOARD_MCK / delay_in_us) : 0xFF;
-}
-
-static void atsam_set_phase_and_polarity(uint32_t mode, uint32_t *csr)
-{
- uint32_t mode_mask = mode & SPI_MODE_3;
-
- switch(mode_mask) {
- case SPI_MODE_0:
- *csr |= SPI_CSR_NCPHA;
- break;
- case SPI_MODE_1:
- break;
- case SPI_MODE_2:
- *csr |= SPI_CSR_NCPHA;
- *csr |= SPI_CSR_CPOL;
- break;
- case SPI_MODE_3:
- *csr |= SPI_CSR_CPOL;
- break;
- }
- *csr |= SPI_CSR_CSAAT;
-}
-
-static void atsam_configure_spi(atsam_spi_bus *bus)
-{
- uint8_t delay_cs;
- uint32_t csr = 0;
- uint32_t mode = 0;
- uint32_t cs = bus->base.cs;
-
- delay_cs = atsam_calculate_dlybcs(bus->base.delay_usecs);
-
- mode |= SPI_MR_DLYBCS(delay_cs);
- mode |= SPI_MR_MSTR;
- mode |= SPI_MR_MODFDIS;
- if (bus->chip_select_decode) {
- mode |= SPI_MR_PCS(bus->base.cs);
- mode |= SPI_MR_PCSDEC;
- cs /= 4;
- } else {
- mode |= SPI_PCS(bus->base.cs);
- }
-
- SPID_Configure(
- &bus->spi,
- bus->spi.pSpiHw,
- bus->spi.spiId,
- mode,
- &XDMAD_Instance
- );
-
- csr =
- SPI_DLYBCT(1000, BOARD_MCK) |
- SPI_DLYBS(1000, BOARD_MCK) |
- SPI_SCBR(bus->base.speed_hz, BOARD_MCK) |
- SPI_CSR_BITS(bus->base.bits_per_word - 8);
-
- atsam_set_phase_and_polarity(bus->base.mode, &csr);
-
- SPI_ConfigureNPCS(bus->spi.pSpiHw, cs, csr);
-}
-
-static void atsam_spi_check_alignment_and_set_up_dma_descriptors(
- atsam_spi_bus *bus,
- struct atsam_spi_xdma_buf *buf,
- const uint8_t *start,
- size_t len,
- bool tx
-)
-{
- LinkedListDescriporView0 *curdesc = buf->desc;
- size_t misaligned_begin;
- size_t misaligned_end;
- size_t len_main;
- const uint8_t *start_main;
- const uint8_t *start_trail;
-
- /* Check alignments. */
- if (len < CPU_CACHE_LINE_BYTES) {
- misaligned_begin = len;
- misaligned_end = 0;
- len_main = 0;
- } else {
- misaligned_begin = ((uint32_t) start) % CPU_CACHE_LINE_BYTES;
- misaligned_end = (((uint32_t) start) + len) % CPU_CACHE_LINE_BYTES;
- len_main = len - misaligned_begin - misaligned_end;
- }
- start_main = start + misaligned_begin;
- start_trail = start_main + len_main;
-
- /* Store length for copying data back. */
- if (!tx) {
- bus->leadbuf_rx_buffered_len = misaligned_begin;
- bus->trailbuf_rx_buffered_len = misaligned_end;
- }
-
- /* Handle misalignment on begin. */
- if (misaligned_begin != 0) {
- if (tx) {
- atsam_copy_to_io(buf->leadbuf, start, misaligned_begin);
- }
- curdesc->mbr_nda = (uint32_t) (&curdesc[1]);
- curdesc->mbr_ta = (uint32_t) buf->leadbuf;
- curdesc->mbr_ubc = misaligned_begin;
- }
-
- /* Main part */
- if (len_main > 0) {
- curdesc->mbr_ubc |= tx ? XDMA_UBC_NSEN_UPDATED : XDMA_UBC_NDEN_UPDATED;
- curdesc->mbr_ubc |= XDMA_UBC_NVIEW_NDV0;
- curdesc->mbr_ubc |= XDMA_UBC_NDE_FETCH_EN;
- ++curdesc;
-
- curdesc->mbr_nda = (uint32_t) (&curdesc[1]);
- curdesc->mbr_ta = (uint32_t) start_main;
- curdesc->mbr_ubc = len_main;
- if (tx) {
- rtems_cache_flush_multiple_data_lines(start_main, len_main);
- } else {
- rtems_cache_invalidate_multiple_data_lines(start_main, len_main);
- }
- }
-
- /* Handle misalignment on end */
- if (misaligned_end != 0) {
- curdesc->mbr_ubc |= tx ? XDMA_UBC_NSEN_UPDATED : XDMA_UBC_NDEN_UPDATED;
- curdesc->mbr_ubc |= XDMA_UBC_NVIEW_NDV0;
- curdesc->mbr_ubc |= XDMA_UBC_NDE_FETCH_EN;
- ++curdesc;
-
- if (tx) {
- atsam_copy_to_io(buf->trailbuf, start_trail, misaligned_end);
- }
- curdesc->mbr_nda = 0;
- curdesc->mbr_ta = (uint32_t) buf->trailbuf;
- curdesc->mbr_ubc = misaligned_end;
- curdesc->mbr_ubc |= XDMA_UBC_NDE_FETCH_DIS;
- }
-}
-
-static void atsam_spi_copy_back_rx_after_dma_transfer(
- atsam_spi_bus *bus
-)
-{
- if (bus->leadbuf_rx_buffered_len != 0) {
- atsam_copy_from_io(
- bus->msg_current->rx_buf,
- bus->dma_bufs[DMA_BUF_RX].leadbuf,
- bus->leadbuf_rx_buffered_len
- );
- }
- if (bus->trailbuf_rx_buffered_len != 0) {
- atsam_copy_from_io(
- bus->msg_current->rx_buf + bus->msg_current->len -
- bus->trailbuf_rx_buffered_len,
- bus->dma_bufs[DMA_BUF_RX].trailbuf,
- bus->trailbuf_rx_buffered_len
- );
- }
-}
-
-static void atsam_spi_start_dma_transfer(
- atsam_spi_bus *bus,
- const spi_ioc_transfer *msg
-)
-{
- Xdmac *pXdmac = XDMAC;
- size_t i;
-
- atsam_spi_check_alignment_and_set_up_dma_descriptors(
- bus,
- &bus->dma_bufs[DMA_BUF_RX],
- msg->rx_buf,
- msg->len,
- false
- );
- atsam_spi_check_alignment_and_set_up_dma_descriptors(
- bus,
- &bus->dma_bufs[DMA_BUF_TX],
- msg->tx_buf,
- msg->len,
- true
- );
-
- XDMAC_SetDescriptorAddr(
- pXdmac,
- bus->dma_rx_channel,
- (uint32_t) bus->dma_bufs[DMA_BUF_RX].desc,
- 0
- );
- XDMAC_SetDescriptorControl(
- pXdmac,
- bus->dma_rx_channel,
- XDMAC_CNDC_NDVIEW_NDV0 |
- XDMAC_CNDC_NDDUP_DST_PARAMS_UPDATED |
- XDMAC_CNDC_NDE_DSCR_FETCH_EN
- );
- XDMAC_SetDescriptorAddr(
- pXdmac,
- bus->dma_tx_channel,
- (uint32_t) bus->dma_bufs[DMA_BUF_TX].desc,
- 0
- );
- XDMAC_SetDescriptorControl(
- pXdmac,
- bus->dma_tx_channel,
- XDMAC_CNDC_NDVIEW_NDV0 |
- XDMAC_CNDC_NDSUP_SRC_PARAMS_UPDATED |
- XDMAC_CNDC_NDE_DSCR_FETCH_EN
- );
-
- XDMAC_StartTransfer(pXdmac, bus->dma_rx_channel);
- XDMAC_StartTransfer(pXdmac, bus->dma_tx_channel);
-}
-
-static void atsam_spi_do_transfer(
- atsam_spi_bus *bus,
- const spi_ioc_transfer *msg
-)
-{
- if (!bus->chip_select_active){
- Spi *pSpiHw = bus->spi.pSpiHw;
-
- bus->chip_select_active = true;
-
- if (bus->chip_select_decode) {
- pSpiHw->SPI_MR = (pSpiHw->SPI_MR & ~SPI_MR_PCS_Msk) | SPI_MR_PCS(msg->cs);
- } else {
- SPI_ChipSelect(pSpiHw, 1 << msg->cs);
- }
- SPI_Enable(pSpiHw);
- }
-
- atsam_spi_start_dma_transfer(bus, msg);
-}
-
-static int atsam_check_configure_spi(atsam_spi_bus *bus, const spi_ioc_transfer *msg)
-{
- if (
- msg->mode != bus->base.mode
- || msg->speed_hz != bus->base.speed_hz
- || msg->bits_per_word != bus->base.bits_per_word
- || msg->cs != bus->base.cs
- || msg->delay_usecs != bus->base.delay_usecs
- ) {
- if (
- msg->bits_per_word < 8
- || msg->bits_per_word > 16
- || msg->mode > 3
- || msg->speed_hz > bus->base.max_speed_hz
- ) {
- return -EINVAL;
- }
-
- bus->base.mode = msg->mode;
- bus->base.speed_hz = msg->speed_hz;
- bus->base.bits_per_word = msg->bits_per_word;
- bus->base.cs = msg->cs;
- bus->base.delay_usecs = msg->delay_usecs;
- atsam_configure_spi(bus);
- }
-
- return 0;
-}
-
-static void atsam_spi_setup_transfer(atsam_spi_bus *bus)
-{
- uint32_t msg_todo = bus->msg_todo;
-
- bus->transfer_in_progress = 2;
-
- if (bus->msg_cs_change) {
- bus->chip_select_active = false;
- SPI_ReleaseCS(bus->spi.pSpiHw);
- SPI_Disable(bus->spi.pSpiHw);
- }
-
- if (msg_todo > 0) {
- const spi_ioc_transfer *msg = bus->msg_next;
- int error;
-
- bus->msg_cs_change = msg->cs_change;
- bus->msg_next = msg + 1;
- bus->msg_current = msg;
- bus->msg_todo = msg_todo - 1;
-
- error = atsam_check_configure_spi(bus, msg);
- if (error == 0) {
- atsam_spi_do_transfer(bus, msg);
- } else {
- bus->msg_error = error;
- atsam_spi_wakeup_task(bus);
- }
- } else {
- atsam_spi_wakeup_task(bus);
- }
-}
-
-static void atsam_spi_dma_callback(uint32_t channel, void *arg)
-{
- atsam_spi_bus *bus = (atsam_spi_bus *)arg;
-
- --bus->transfer_in_progress;
-
- if (bus->transfer_in_progress == 0) {
- atsam_spi_copy_back_rx_after_dma_transfer(bus);
- atsam_spi_setup_transfer(bus);
- }
-}
-
-static int atsam_spi_transfer(
- spi_bus *base,
- const spi_ioc_transfer *msgs,
- uint32_t msg_count
-)
-{
- rtems_status_code sc;
- atsam_spi_bus *bus = (atsam_spi_bus *)base;
-
- bus->msg_cs_change = false;
- bus->msg_next = &msgs[0];
- bus->msg_current = NULL;
- bus->msg_todo = msg_count;
- bus->msg_error = 0;
- bus->msg_task = rtems_task_self();
- atsam_spi_setup_transfer(bus);
- sc = rtems_event_transient_receive(RTEMS_WAIT, RTEMS_NO_TIMEOUT);
- assert(sc == RTEMS_SUCCESSFUL);
- return bus->msg_error;
-}
-
-
-static void atsam_spi_destroy(spi_bus *base)
-{
- atsam_spi_bus *bus = (atsam_spi_bus *)base;
- eXdmadRC rc;
-
- rc = XDMAD_SetCallback(
- bus->spi.pXdmad,
- bus->dma_rx_channel,
- XDMAD_DoNothingCallback,
- NULL
- );
- assert(rc == XDMAD_OK);
-
- rc = XDMAD_SetCallback(
- bus->spi.pXdmad,
- bus->dma_tx_channel,
- XDMAD_DoNothingCallback,
- NULL
- );
- assert(rc == XDMAD_OK);
-
- XDMAD_FreeChannel(bus->spi.pXdmad, bus->dma_rx_channel);
- XDMAD_FreeChannel(bus->spi.pXdmad, bus->dma_tx_channel);
-
- SPI_Disable(bus->spi.pSpiHw);
- PMC_DisablePeripheral(bus->spi.spiId);
-
- rtems_cache_coherent_free(bus->dma_bufs);
-
- spi_bus_destroy_and_free(&bus->base);
-}
-
-static int atsam_spi_setup(spi_bus *base)
-{
- atsam_spi_bus *bus = (atsam_spi_bus *)base;
-
- if (
- bus->base.speed_hz > MAX_SPI_FREQUENCY ||
- bus->base.bits_per_word < 8 ||
- bus->base.bits_per_word > 16
- ) {
- return -EINVAL;
- }
- atsam_configure_spi(bus);
- return 0;
-}
-
-static void atsam_spi_init_xdma(atsam_spi_bus *bus)
-{
- sXdmadCfg cfg;
- uint32_t xdmaInt;
- uint8_t channel;
- eXdmadRC rc;
- uint32_t xdma_cndc;
-
- bus->dma_bufs = rtems_cache_coherent_allocate(
- DMA_BUF_DIRS * sizeof(*(bus->dma_bufs)),
- DMA_DESC_ALLIGNMENT,
- 0
- );
- assert(bus->dma_bufs != NULL);
-
- bus->dma_tx_channel = XDMAD_AllocateChannel(
- bus->spi.pXdmad,
- XDMAD_TRANSFER_MEMORY,
- bus->spi.spiId
- );
- assert(bus->dma_tx_channel != XDMAD_ALLOC_FAILED);
-
- bus->dma_rx_channel = XDMAD_AllocateChannel(
- bus->spi.pXdmad,
- bus->spi.spiId,
- XDMAD_TRANSFER_MEMORY
- );
- assert(bus->dma_rx_channel != XDMAD_ALLOC_FAILED);
-
- rc = XDMAD_SetCallback(
- bus->spi.pXdmad,
- bus->dma_rx_channel,
- atsam_spi_dma_callback,
- bus
- );
- assert(rc == XDMAD_OK);
-
- rc = XDMAD_SetCallback(
- bus->spi.pXdmad,
- bus->dma_tx_channel,
- atsam_spi_dma_callback,
- bus
- );
- assert(rc == XDMAD_OK);
-
- rc = XDMAD_PrepareChannel(bus->spi.pXdmad, bus->dma_rx_channel);
- assert(rc == XDMAD_OK);
-
- rc = XDMAD_PrepareChannel(bus->spi.pXdmad, bus->dma_tx_channel);
- assert(rc == XDMAD_OK);
-
- /* Put all relevant interrupts on */
- xdmaInt = (
- XDMAC_CIE_BIE |
- XDMAC_CIE_DIE |
- XDMAC_CIE_FIE |
- XDMAC_CIE_RBIE |
- XDMAC_CIE_WBIE |
- XDMAC_CIE_ROIE);
-
- /* Setup RX */
- memset(&cfg, 0, sizeof(cfg));
- channel = XDMAIF_Get_ChannelNumber(bus->spi.spiId, XDMAD_TRANSFER_RX);
- cfg.mbr_sa = (uint32_t)&bus->spi.pSpiHw->SPI_RDR;
- cfg.mbr_cfg =
- XDMAC_CC_TYPE_PER_TRAN |
- XDMAC_CC_MBSIZE_SINGLE |
- XDMAC_CC_DSYNC_PER2MEM |
- XDMAC_CC_CSIZE_CHK_1 |
- XDMAC_CC_DWIDTH_BYTE |
- XDMAC_CC_SIF_AHB_IF1 |
- XDMAC_CC_DIF_AHB_IF1 |
- XDMAC_CC_SAM_FIXED_AM |
- XDMAC_CC_DAM_INCREMENTED_AM |
- XDMAC_CC_PERID(channel);
- xdma_cndc = XDMAC_CNDC_NDVIEW_NDV0 |
- XDMAC_CNDC_NDE_DSCR_FETCH_EN |
- XDMAC_CNDC_NDDUP_DST_PARAMS_UPDATED |
- XDMAC_CNDC_NDSUP_SRC_PARAMS_UNCHANGED;
- rc = XDMAD_ConfigureTransfer(
- bus->spi.pXdmad,
- bus->dma_rx_channel,
- &cfg,
- xdma_cndc,
- (uint32_t) bus->dma_bufs[DMA_BUF_RX].desc,
- xdmaInt
- );
- assert(rc == XDMAD_OK);
-
- /* Setup TX */
- memset(&cfg, 0, sizeof(cfg));
- channel = XDMAIF_Get_ChannelNumber(bus->spi.spiId, XDMAD_TRANSFER_TX);
- cfg.mbr_da = (uint32_t)&bus->spi.pSpiHw->SPI_TDR;
- cfg.mbr_cfg =
- XDMAC_CC_TYPE_PER_TRAN |
- XDMAC_CC_MBSIZE_SINGLE |
- XDMAC_CC_DSYNC_MEM2PER |
- XDMAC_CC_CSIZE_CHK_1 |
- XDMAC_CC_DWIDTH_BYTE |
- XDMAC_CC_SIF_AHB_IF1 |
- XDMAC_CC_DIF_AHB_IF1 |
- XDMAC_CC_SAM_INCREMENTED_AM |
- XDMAC_CC_DAM_FIXED_AM |
- XDMAC_CC_PERID(channel);
- xdma_cndc = XDMAC_CNDC_NDVIEW_NDV0 |
- XDMAC_CNDC_NDE_DSCR_FETCH_EN |
- XDMAC_CNDC_NDDUP_DST_PARAMS_UNCHANGED |
- XDMAC_CNDC_NDSUP_SRC_PARAMS_UPDATED;
- rc = XDMAD_ConfigureTransfer(
- bus->spi.pXdmad,
- bus->dma_tx_channel,
- &cfg,
- xdma_cndc,
- (uint32_t) bus->dma_bufs[DMA_BUF_TX].desc,
- xdmaInt
- );
- assert(rc == XDMAD_OK);
-}
-
-int spi_bus_register_atsam(
- const char *bus_path,
- const atsam_spi_config *config
-)
-{
- atsam_spi_bus *bus;
-
- bus = (atsam_spi_bus *) spi_bus_alloc_and_init(sizeof(*bus));
- if (bus == NULL) {
- return -1;
- }
-
- bus->base.transfer = atsam_spi_transfer;
- bus->base.destroy = atsam_spi_destroy;
- bus->base.setup = atsam_spi_setup;
- bus->base.max_speed_hz = MAX_SPI_FREQUENCY;
- bus->base.bits_per_word = 8;
- bus->base.speed_hz = bus->base.max_speed_hz;
- bus->base.delay_usecs = 1;
- bus->base.cs = 1;
- bus->spi.spiId = config->spi_peripheral_id;
- bus->spi.pSpiHw = config->spi_regs;
- bus->chip_select_decode = config->chip_select_decode;
-
- PIO_Configure(config->pins, config->pin_count);
- PMC_EnablePeripheral(config->spi_peripheral_id);
- atsam_configure_spi(bus);
- atsam_spi_init_xdma(bus);
-
- return spi_bus_register(&bus->base, bus_path);
-}
diff --git a/c/src/lib/libbsp/arm/atsam/spi/atsam_spi_init.c b/c/src/lib/libbsp/arm/atsam/spi/atsam_spi_init.c
deleted file mode 100644
index ca18f8ec35..0000000000
--- a/c/src/lib/libbsp/arm/atsam/spi/atsam_spi_init.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * Copyright (c) 2016 embedded brains GmbH. All rights reserved.
- *
- * embedded brains GmbH
- * Dornierstr. 4
- * 82178 Puchheim
- * Germany
- * <info@embedded-brains.de>
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-#include <bsp/atsam-spi.h>
-#include <bsp/spi.h>
-
-/** SPI0 MISO pin */
-#define PIN_SPI0_MISO {PIO_PD20B_SPI0_MISO, PIOD, ID_PIOD, PIO_PERIPH_B, PIO_DEFAULT}
-/** SPI0 MOSI pin */
-#define PIN_SPI0_MOSI {PIO_PD21B_SPI0_MOSI, PIOD, ID_PIOD, PIO_PERIPH_B, PIO_DEFAULT}
-/** SPI0 CS0 pin */
-#define PIN_SPI0_NPCS0 {PIO_PB2D_SPI0_NPCS0, PIOB, ID_PIOB, PIO_PERIPH_D, PIO_DEFAULT}
-/** SPI0 CS1_1 pin */
-#define PIN_SPI0_NPCS1_1 {PIO_PA31A_SPI0_NPCS1, PIOA, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT}
-/** SPI0 CS1_2 pin */
-#define PIN_SPI0_NPCS1_2 {PIO_PD25B_SPI0_NPCS1, PIOD, ID_PIOD, PIO_PERIPH_B, PIO_DEFAULT}
-/** SPI0 CS2 pin */
-#define PIN_SPI0_NPCS2 {PIO_PD12C_SPI0_NPCS2, PIOD, ID_PIOD, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI0 CS3 pin */
-#define PIN_SPI0_NPCS3 {PIO_PD27B_SPI0_NPCS3, PIOD, ID_PIOD, PIO_PERIPH_B, PIO_DEFAULT}
-/** SPI0 Clock pin */
-#define PIN_SPI0_CLOCK {PIO_PD22B_SPI0_SPCK, PIOD, ID_PIOD, PIO_PERIPH_B, PIO_DEFAULT}
-
-/** SPI1 MISO pin */
-#define PIN_SPI1_MISO {PIO_PC26C_SPI1_MISO, PIOC, ID_PIOC, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI1 MOSI pin */
-#define PIN_SPI1_MOSI {PIO_PC27C_SPI1_MOSI, PIOC, ID_PIOC, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI1 CS0 pin */
-#define PIN_SPI1_NPCS0 {PIO_PC25C_SPI1_NPCS0, PIOC, ID_PIOC, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI1 CS1_1 pin */
-#define PIN_SPI1_NPCS1_1 {PIO_PC28C_SPI1_NPCS1, PIOC, ID_PIOC, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI1 CS1_2 pin */
-#define PIN_SPI1_NPCS1_2 {PIO_PD0C_SPI1_NPCS1, PIOD, ID_PIOD, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI1 CS2_1 pin */
-#define PIN_SPI1_NPCS2_1 {PIO_PC29C_SPI1_NPCS2, PIOC, ID_PIOC, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI1 CS2_2 pin */
-#define PIN_SPI1_NPCS2_2 {PIO_PD1C_SPI1_NPCS2, PIOD, ID_PIOD, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI1 CS3_1 pin */
-#define PIN_SPI1_NPCS3_1 {PIO_PC30C_SPI1_NPCS3, PIOC, ID_PIOC, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI1 CS3_2 pin */
-#define PIN_SPI1_NPCS3_2 {PIO_PD2C_SPI1_NPCS3, PIOD, ID_PIOD, PIO_PERIPH_C, PIO_DEFAULT}
-/** SPI1 Clock pin */
-#define PIN_SPI1_CLOCK {PIO_PC24C_SPI1_SPCK, PIOC, ID_PIOC, PIO_PERIPH_C, PIO_DEFAULT}
-
-int atsam_register_spi_0(void)
-{
- static const Pin pins[] = {
- PIN_SPI0_MISO,
- PIN_SPI0_MOSI,
- PIN_SPI0_NPCS0,
- PIN_SPI0_NPCS1_1,
- PIN_SPI0_NPCS1_2,
- PIN_SPI0_NPCS2,
- PIN_SPI0_NPCS3,
- PIN_SPI0_CLOCK
- };
-
- static const atsam_spi_config config = {
- .spi_peripheral_id = ID_SPI0,
- .spi_regs = SPI0,
- .pins = pins,
- .pin_count = RTEMS_ARRAY_SIZE(pins),
- .chip_select_decode = false
- };
-
- return spi_bus_register_atsam(
- ATSAM_SPI_0_BUS_PATH,
- &config
- );
-}
-
-int atsam_register_spi_1(void)
-{
- static const Pin pins[] = {
- PIN_SPI1_MISO,
- PIN_SPI1_MOSI,
- PIN_SPI1_NPCS0,
- PIN_SPI1_NPCS1_1,
- PIN_SPI1_NPCS1_2,
- PIN_SPI1_NPCS2_1,
- PIN_SPI1_NPCS2_2,
- PIN_SPI1_NPCS3_1,
- PIN_SPI1_NPCS3_2,
- PIN_SPI1_CLOCK
- };
-
- static const atsam_spi_config config = {
- .spi_peripheral_id = ID_SPI1,
- .spi_regs = SPI1,
- .pins = pins,
- .pin_count = RTEMS_ARRAY_SIZE(pins),
- .chip_select_decode = false
- };
-
- return spi_bus_register_atsam(
- ATSAM_SPI_1_BUS_PATH,
- &config
- );
-}
diff --git a/c/src/lib/libbsp/arm/atsam/spi/sc16is752.c b/c/src/lib/libbsp/arm/atsam/spi/sc16is752.c
deleted file mode 100644
index b17f9ffc14..0000000000
--- a/c/src/lib/libbsp/arm/atsam/spi/sc16is752.c
+++ /dev/null
@@ -1,85 +0,0 @@
-
-/*
- * Copyright (c) 2016 embedded brains GmbH. All rights reserved.
- *
- * embedded brains GmbH
- * Dornierstr. 4
- * 82178 Puchheim
- * Germany
- * <rtems@embedded-brains.de>
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-#include <bsp/sc16is752.h>
-
-#include <rtems/irq-extension.h>
-
-static void atsam_sc16i752_interrupt(void *arg)
-{
- atsam_sc16is752_spi_context *ctx = arg;
-
- sc16is752_interrupt_handler(&ctx->base.base);
-
- /* Interrupt Status Register shall be read to clear the interrupt flag */
- ctx->irq_pin.pio->PIO_ISR;
-}
-
-static bool atsam_sc16is752_install_interrupt(sc16is752_context *base)
-{
- atsam_sc16is752_spi_context *ctx = (atsam_sc16is752_spi_context *)base;
- rtems_status_code sc;
-
- PIO_Configure(&ctx->irq_pin, 1);
- PIO_EnableIt(&ctx->irq_pin);
-
- sc = rtems_interrupt_server_handler_install(
- RTEMS_ID_NONE,
- ctx->irq_pin.id,
- "Test",
- RTEMS_INTERRUPT_SHARED,
- atsam_sc16i752_interrupt,
- ctx
- );
-
- return sc == RTEMS_SUCCESSFUL;
-}
-
-static void atsam_sc16is752_remove_interrupt(sc16is752_context *base)
-{
- atsam_sc16is752_spi_context *ctx = (atsam_sc16is752_spi_context *)base;
- rtems_status_code sc;
-
- sc = rtems_interrupt_server_handler_remove(
- RTEMS_ID_NONE,
- ctx->irq_pin.id,
- atsam_sc16i752_interrupt,
- ctx
- );
- assert(sc == RTEMS_SUCCESSFUL);
-}
-
-int atsam_sc16is752_spi_create(
- atsam_sc16is752_spi_context *ctx,
- const char *device_path,
- sc16is752_mode mode,
- uint32_t input_frequency,
- const char *spi_path,
- uint8_t spi_chip_select,
- uint32_t spi_speed_hz,
- const Pin *irq_pin
-)
-{
- ctx->base.base.mode = mode;
- ctx->base.base.input_frequency = input_frequency;
- ctx->base.base.install_irq = atsam_sc16is752_install_interrupt;
- ctx->base.base.remove_irq = atsam_sc16is752_remove_interrupt;
- ctx->base.spi_path = spi_path;
- ctx->base.cs = spi_chip_select;
- ctx->base.speed_hz = spi_speed_hz;
- ctx->irq_pin = *irq_pin;
-
- return sc16is752_spi_create(&ctx->base, device_path);
-}
diff --git a/c/src/lib/libbsp/arm/imx/Makefile.am b/c/src/lib/libbsp/arm/imx/Makefile.am
index 3426433800..5d151d693f 100644
--- a/c/src/lib/libbsp/arm/imx/Makefile.am
+++ b/c/src/lib/libbsp/arm/imx/Makefile.am
@@ -69,7 +69,7 @@ librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/shared/cache/cache-cp15.c
librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/imx/i2c/imx-i2c.c
# SPI
-librtemsbsp_a_SOURCES += spi/imx-ecspi.c
+librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/imx/spi/imx-ecspi.c
# Start hooks
librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/imx/start/bspstarthooks.c
diff --git a/c/src/lib/libbsp/arm/imx/spi/imx-ecspi.c b/c/src/lib/libbsp/arm/imx/spi/imx-ecspi.c
deleted file mode 100644
index 9a232c53e9..0000000000
--- a/c/src/lib/libbsp/arm/imx/spi/imx-ecspi.c
+++ /dev/null
@@ -1,449 +0,0 @@
-/*
- * Copyright (c) 2017 embedded brains GmbH. All rights reserved.
- *
- * embedded brains GmbH
- * Dornierstr. 4
- * 82178 Puchheim
- * Germany
- * <info@embedded-brains.de>
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-#include <bsp.h>
-#include <bsp/fdt.h>
-#include <libfdt.h>
-#include <arm/freescale/imx/imx_ccmvar.h>
-#include <arm/freescale/imx/imx_ecspireg.h>
-#include <dev/spi/spi.h>
-#include <rtems/irq-extension.h>
-#include <sys/param.h>
-#include <sys/endian.h>
-
-#define IMX_ECSPI_FIFO_SIZE 64
-
-typedef struct imx_ecspi_bus imx_ecspi_bus;
-
-struct imx_ecspi_bus {
- spi_bus base;
- volatile imx_ecspi *regs;
- uint32_t conreg;
- uint32_t speed_hz;
- uint32_t mode;
- uint8_t bits_per_word;
- uint8_t cs;
- uint32_t msg_todo;
- const spi_ioc_transfer *msg;
- uint32_t todo;
- uint32_t in_transfer;
- uint8_t *rx_buf;
- const uint8_t *tx_buf;
- void (*push)(imx_ecspi_bus *, volatile imx_ecspi *);
- void (*pop)(imx_ecspi_bus *, volatile imx_ecspi *);
- rtems_id task_id;
- rtems_vector_number irq;
-};
-
-static bool imx_ecspi_is_rx_fifo_not_empty(volatile imx_ecspi *regs)
-{
- return (regs->statreg & IMX_ECSPI_RR) != 0;
-}
-
-static void imx_ecspi_reset(volatile imx_ecspi *regs)
-{
- while (imx_ecspi_is_rx_fifo_not_empty(regs)) {
- regs->rxdata;
- }
-}
-
-static void imx_ecspi_done(imx_ecspi_bus *bus)
-{
- rtems_event_transient_send(bus->task_id);
-}
-
-#define IMC_ECSPI_PUSH(type) \
-static void imx_ecspi_push_##type(imx_ecspi_bus *bus, volatile imx_ecspi *regs) \
-{ \
- type val = 0; \
- if (bus->tx_buf != NULL) { \
- val = *(type *)bus->tx_buf; \
- bus->tx_buf += sizeof(type); \
- } \
- bus->todo -= sizeof(type); \
- regs->txdata = val; \
-}
-
-#define IMX_ECSPI_POP(type) \
-static void imx_ecspi_pop_##type(imx_ecspi_bus *bus, volatile imx_ecspi *regs) \
-{ \
- uint32_t val = regs->rxdata; \
- if (bus->rx_buf != NULL) { \
- *(type *)bus->rx_buf = val; \
- bus->rx_buf += sizeof(type); \
- } \
-}
-
-IMC_ECSPI_PUSH(uint8_t)
-IMX_ECSPI_POP(uint8_t)
-IMC_ECSPI_PUSH(uint16_t)
-IMX_ECSPI_POP(uint16_t)
-IMC_ECSPI_PUSH(uint32_t)
-IMX_ECSPI_POP(uint32_t)
-
-static void imx_ecspi_push_uint32_t_swap(
- imx_ecspi_bus *bus,
- volatile imx_ecspi *regs
-)
-{
- uint32_t val = 0;
-
- if (bus->tx_buf != NULL) {
- val = bswap32(*(uint32_t *)bus->tx_buf);
- bus->tx_buf += sizeof(uint32_t);
- }
-
- bus->todo -= sizeof(uint32_t);
- regs->txdata = val;
-}
-
-static void imx_ecspi_pop_uint32_t_swap(
- imx_ecspi_bus *bus,
- volatile imx_ecspi *regs
-)
-{
- uint32_t val = regs->rxdata;
-
- if (bus->rx_buf != NULL) {
- *(uint32_t *)bus->rx_buf = bswap32(val);
- bus->rx_buf += sizeof(uint32_t);
- }
-}
-
-static void imx_ecspi_push(imx_ecspi_bus *bus, volatile imx_ecspi *regs)
-{
- while (bus->todo > 0 && bus->in_transfer < IMX_ECSPI_FIFO_SIZE) {
- (*bus->push)(bus, regs);
- ++bus->in_transfer;
- }
-}
-
-static uint32_t imx_ecspi_conreg_divider(imx_ecspi_bus *bus, uint32_t speed_hz)
-{
- uint32_t post;
- uint32_t pre;
- uint32_t clk_in;
-
- clk_in = bus->base.max_speed_hz;
-
- if (clk_in > speed_hz) {
- post = fls((int) clk_in) - fls((int) speed_hz);
-
- if (clk_in > (speed_hz << post)) {
- ++post;
- }
-
- /* We have 2^4 == 16, use the pre-divider for this factor */
- post = MAX(4, post) - 4;
-
- if (post <= 0xf) {
- pre = howmany(clk_in, speed_hz << post) - 1;
- } else {
- post = 0xf;
- pre = 0xf;
- }
- } else {
- post = 0;
- pre = 0;
- }
-
- return IMX_ECSPI_CONREG_POST_DIVIDER(post)
- | IMX_ECSPI_CONREG_PRE_DIVIDER(pre);
-}
-
-static void imx_ecspi_config(
- imx_ecspi_bus *bus,
- volatile imx_ecspi *regs,
- uint32_t speed_hz,
- uint8_t bits_per_word,
- uint32_t mode,
- uint8_t cs
-)
-{
- uint32_t conreg;
- uint32_t testreg;
- uint32_t configreg;
- uint32_t cs_bit;
-
- conreg = IMX_ECSPI_CONREG_CHANNEL_MODE(0xf)
- | IMX_ECSPI_CONREG_SMC | IMX_ECSPI_CONREG_EN;
- testreg = regs->testreg;
- configreg = regs->configreg;
- cs_bit = 1U << cs;
-
- conreg |= imx_ecspi_conreg_divider(bus, speed_hz);
- conreg |= IMX_ECSPI_CONREG_CHANNEL_SELECT(cs);
-
- configreg |= IMX_ECSPI_CONFIGREG_SS_CTL(cs_bit);
-
- if ((mode & SPI_CPHA) != 0) {
- configreg |= IMX_ECSPI_CONFIGREG_SCLK_PHA(cs_bit);
- } else {
- configreg &= ~IMX_ECSPI_CONFIGREG_SCLK_PHA(cs_bit);
- }
-
- if ((mode & SPI_CPOL) != 0) {
- configreg |= IMX_ECSPI_CONFIGREG_SCLK_POL(cs_bit);
- configreg |= IMX_ECSPI_CONFIGREG_SCLK_CTL(cs_bit);
- } else {
- configreg &= ~IMX_ECSPI_CONFIGREG_SCLK_POL(cs_bit);
- configreg &= ~IMX_ECSPI_CONFIGREG_SCLK_CTL(cs_bit);
- }
-
- if ((mode & SPI_CS_HIGH) != 0) {
- configreg |= IMX_ECSPI_CONFIGREG_SS_POL(cs_bit);
- } else {
- configreg &= ~IMX_ECSPI_CONFIGREG_SS_POL(cs_bit);
- }
-
- if ((mode & SPI_LOOP) != 0) {
- testreg |= IMX_ECSPI_TESTREG_LBC;
- } else {
- testreg &= ~IMX_ECSPI_TESTREG_LBC;
- }
-
- regs->conreg = conreg;
- regs->testreg = testreg;
- regs->configreg = configreg;
-
- bus->conreg = conreg;
- bus->speed_hz = speed_hz;
- bus->bits_per_word = bits_per_word;
- bus->mode = mode;
- bus->cs = cs;
-
- /* FIXME: Clock change delay */
-}
-
-static void imx_ecspi_set_push_pop(
- imx_ecspi_bus *bus,
- uint32_t len,
- uint8_t bits_per_word
-)
-{
- uint32_t conreg;
-
- conreg = bus->conreg;
-
- if (len % 4 == 0 && len <= IMX_ECSPI_FIFO_SIZE) {
- conreg |= IMX_ECSPI_CONREG_BURST_LENGTH((len * 8) - 1);
-
- bus->push = imx_ecspi_push_uint32_t_swap;
- bus->pop = imx_ecspi_pop_uint32_t_swap;
- } else {
- conreg |= IMX_ECSPI_CONREG_BURST_LENGTH(bits_per_word - 1);
-
- if (bits_per_word <= 8) {
- bus->push = imx_ecspi_push_uint8_t;
- bus->pop = imx_ecspi_pop_uint8_t;
- } else if (bits_per_word <= 16) {
- bus->push = imx_ecspi_push_uint16_t;
- bus->pop = imx_ecspi_pop_uint16_t;
- } else {
- bus->push = imx_ecspi_push_uint32_t;
- bus->pop = imx_ecspi_pop_uint32_t;
- }
- }
-
- bus->regs->conreg = conreg;
-}
-
-static void imx_ecspi_next_msg(imx_ecspi_bus *bus, volatile imx_ecspi *regs)
-{
- if (bus->msg_todo > 0) {
- const spi_ioc_transfer *msg;
-
- msg = bus->msg;
-
- if (
- msg->speed_hz != bus->speed_hz
- || msg->bits_per_word != bus->bits_per_word
- || msg->mode != bus->mode
- || msg->cs != bus->cs
- ) {
- imx_ecspi_config(
- bus,
- regs,
- msg->speed_hz,
- msg->bits_per_word,
- msg->mode,
- msg->cs
- );
- }
-
- bus->todo = msg->len;
- bus->rx_buf = msg->rx_buf;
- bus->tx_buf = msg->tx_buf;
- imx_ecspi_set_push_pop(bus, msg->len, msg->bits_per_word);
- imx_ecspi_push(bus, regs);
- regs->intreg = IMX_ECSPI_TE;
- } else {
- regs->intreg = 0;
- imx_ecspi_done(bus);
- }
-}
-
-static void imx_ecspi_interrupt(void *arg)
-{
- imx_ecspi_bus *bus;
- volatile imx_ecspi *regs;
-
- bus = arg;
- regs = bus->regs;
-
- while (imx_ecspi_is_rx_fifo_not_empty(regs)) {
- (*bus->pop)(bus, regs);
- --bus->in_transfer;
- }
-
- if (bus->todo > 0) {
- imx_ecspi_push(bus, regs);
- } else if (bus->in_transfer > 0) {
- regs->intreg = IMX_ECSPI_RR;
- } else {
- --bus->msg_todo;
- ++bus->msg;
- imx_ecspi_next_msg(bus, regs);
- }
-}
-
-static int imx_ecspi_transfer(
- spi_bus *base,
- const spi_ioc_transfer *msgs,
- uint32_t n
-)
-{
- imx_ecspi_bus *bus;
-
- bus = (imx_ecspi_bus *) base;
-
- bus->msg_todo = n;
- bus->msg = &msgs[0];
- bus->task_id = rtems_task_self();
-
- imx_ecspi_next_msg(bus, bus->regs);
- rtems_event_transient_receive(RTEMS_WAIT, RTEMS_NO_TIMEOUT);
- return 0;
-}
-
-static void imx_ecspi_destroy(spi_bus *base)
-{
- imx_ecspi_bus *bus;
-
- bus = (imx_ecspi_bus *) base;
- rtems_interrupt_handler_remove(bus->irq, imx_ecspi_interrupt, bus);
- spi_bus_destroy_and_free(&bus->base);
-}
-
-static int imx_ecspi_init(imx_ecspi_bus *bus, const void *fdt, int node)
-{
- rtems_status_code sc;
- int len;
- const uint32_t *val;
-
- imx_ecspi_config(
- bus,
- bus->regs,
- bus->base.max_speed_hz,
- 8,
- 0,
- 0
- );
- imx_ecspi_reset(bus->regs);
-
- sc = rtems_interrupt_handler_install(
- bus->irq,
- "ECSPI",
- RTEMS_INTERRUPT_UNIQUE,
- imx_ecspi_interrupt,
- bus
- );
- if (sc != RTEMS_SUCCESSFUL) {
- return EAGAIN;
- }
-
- val = fdt_getprop(fdt, node, "pinctrl-0", &len);
- if (len == 4) {
- imx_iomux_configure_pins(fdt, fdt32_to_cpu(val[0]));
- }
-
- return 0;
-}
-
-static int imx_ecspi_setup(spi_bus *base)
-{
- imx_ecspi_bus *bus;
-
- bus = (imx_ecspi_bus *) base;
-
- if (
- bus->base.speed_hz > imx_ccm_ipg_hz()
- || bus->base.bits_per_word > 32
- ) {
- return -EINVAL;
- }
-
- imx_ecspi_config(
- bus,
- bus->regs,
- bus->base.speed_hz,
- bus->base.bits_per_word,
- bus->base.mode,
- bus->base.cs
- );
- return 0;
-}
-
-int spi_bus_register_imx(const char *bus_path, const char *alias_or_path)
-{
- const void *fdt;
- const char *path;
- int node;
- imx_ecspi_bus *bus;
- int eno;
-
- fdt = bsp_fdt_get();
- path = fdt_get_alias(fdt, alias_or_path);
-
- if (path == NULL) {
- path = alias_or_path;
- }
-
- node = fdt_path_offset(fdt, path);
- if (node < 0) {
- rtems_set_errno_and_return_minus_one(ENXIO);
- }
-
- bus = (imx_ecspi_bus *) spi_bus_alloc_and_init(sizeof(*bus));
- if (bus == NULL){
- return -1;
- }
-
- bus->base.max_speed_hz = imx_ccm_ipg_hz();
- bus->base.delay_usecs = 1;
- bus->regs = imx_get_reg_of_node(fdt, node);
- bus->irq = imx_get_irq_of_node(fdt, node, 0);
-
- eno = imx_ecspi_init(bus, fdt, node);
- if (eno != 0) {
- (*bus->base.destroy)(&bus->base);
- rtems_set_errno_and_return_minus_one(eno);
- }
-
- bus->base.transfer = imx_ecspi_transfer;
- bus->base.destroy = imx_ecspi_destroy;
- bus->base.setup = imx_ecspi_setup;
-
- return spi_bus_register(&bus->base, bus_path);
-}
diff --git a/c/src/lib/libbsp/arm/raspberrypi/Makefile.am b/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
index b0b4058746..a2ca41b2c1 100644
--- a/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
+++ b/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
@@ -99,7 +99,7 @@ librtemsbsp_a_SOURCES += gpio/rpi-gpio.c
librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/raspberrypi/i2c/i2c.c
# SPI
-librtemsbsp_a_SOURCES += spi/spi.c
+librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/raspberrypi/spi/spi.c
# Cache
librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/shared/cache/cache-cp15.c
diff --git a/c/src/lib/libbsp/arm/raspberrypi/spi/spi.c b/c/src/lib/libbsp/arm/raspberrypi/spi/spi.c
deleted file mode 100644
index ae77f6272d..0000000000
--- a/c/src/lib/libbsp/arm/raspberrypi/spi/spi.c
+++ /dev/null
@@ -1,657 +0,0 @@
-/**
- * @file spi.c
- *
- * @ingroup raspberrypi_spi
- *
- * @brief Support for the SPI bus on the Raspberry Pi GPIO P1 header (model A/B)
- * and GPIO J8 header on model B+.
- */
-
-/*
- * Copyright (c) 2014-2015 Andre Marques <andre.lousa.marques at gmail.com>
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-/*
- * STATUS:
- * - Bi-directional mode untested
- * - Write-only devices not supported
- */
-
-#include <bsp.h>
-#include <bsp/raspberrypi.h>
-#include <bsp/gpio.h>
-#include <bsp/rpi-gpio.h>
-#include <bsp/irq.h>
-#include <bsp/spi.h>
-#include <assert.h>
-
-#define SPI_POLLING(condition) \
- while ( condition ) { \
- ; \
- }
-
-/**
- * @brief Object containing the SPI bus configuration settings.
- *
- * Encapsulates the current SPI bus configuration.
- */
-typedef struct
-{
- int initialized;
- uint8_t bytes_per_char;
-
- /* Shift to be applied on data transfers with
- * least significative bit first (LSB) devices. */
- uint8_t bit_shift;
- uint32_t dummy_char;
- uint32_t current_slave_addr;
- rtems_id task_id;
- int irq_write;
-} rpi_spi_softc_t;
-
-/**
- * @brief Object containing the SPI bus description.
- *
- * Encapsulates the current SPI bus description.
- */
-typedef struct
-{
- rtems_libi2c_bus_t bus_desc;
- rpi_spi_softc_t softc;
-} rpi_spi_desc_t;
-
-/* If set to FALSE uses 3-wire SPI, with 2 separate data lines (MOSI and MISO),
- * if set to TRUE uses 2-wire SPI, where the MOSI data line doubles as the
- * slave out (SO) and slave in (SI) data lines. */
-static bool bidirectional = false;
-
-/* Calculates a clock divider to be used with the GPU core clock rate
- * to set a SPI clock rate the closest (<=) to a desired frequency. */
-static rtems_status_code rpi_spi_calculate_clock_divider(
- uint32_t clock_hz,
- uint16_t *clock_divider
-) {
- uint16_t divider;
- uint32_t clock_rate;
-
- assert( clock_hz > 0 );
-
- /* Calculates an initial clock divider. */
- divider = GPU_CORE_CLOCK_RATE / clock_hz;
-
- /* Because the divider must be a power of two (as per the BCM2835 datasheet),
- * calculate the next greater power of two. */
- --divider;
-
- divider |= (divider >> 1);
- divider |= (divider >> 2);
- divider |= (divider >> 4);
- divider |= (divider >> 8);
-
- ++divider;
-
- clock_rate = GPU_CORE_CLOCK_RATE / divider;
-
- /* If the resulting clock rate is greater than the desired frequency,
- * try the next greater power of two divider. */
- while ( clock_rate > clock_hz ) {
- divider = (divider << 1);
-
- clock_rate = GPU_CORE_CLOCK_RATE / divider;
- }
-
- *clock_divider = divider;
-
- return RTEMS_SUCCESSFUL;
-}
-
-/**
- * @brief Set the SPI bus transfer mode.
- *
- * @param[in] bushdl Pointer to the libi2c API bus driver data structure.
- * @param[in] tfr_mode Pointer to a libi2c API transfer mode data structure.
- *
- * @retval RTEMS_SUCCESSFUL Successfully setup the bus transfer mode as desired.
- * @retval RTEMS_INVALID_NUMBER This can have two meanings:
- * 1. The specified number of bytes per char is not
- * 8, 16, 24 or 32;
- * 2. @see rpi_spi_calculate_clock_divider()
- */
-static rtems_status_code rpi_spi_set_tfr_mode(
- rtems_libi2c_bus_t *bushdl,
- const rtems_libi2c_tfr_mode_t *tfr_mode
-) {
- rpi_spi_softc_t *softc_ptr = &(((rpi_spi_desc_t *)(bushdl))->softc);
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- uint16_t clock_divider;
-
- /* Set the dummy character. */
- softc_ptr->dummy_char = tfr_mode->idle_char;
-
- /* Calculate the most appropriate clock divider. */
- sc = rpi_spi_calculate_clock_divider(tfr_mode->baudrate, &clock_divider);
-
- if ( sc != RTEMS_SUCCESSFUL ) {
- return sc;
- }
-
- /* Set the bus clock divider. */
- BCM2835_REG(BCM2835_SPI_CLK) = clock_divider;
-
- /* Calculate how many bytes each character has.
- * Only multiples of 8 bits are accepted for the transaction. */
- switch ( tfr_mode->bits_per_char ) {
- case 8:
- case 16:
- case 24:
- case 32:
- softc_ptr->bytes_per_char = tfr_mode->bits_per_char / 8;
- break;
-
- default:
- return RTEMS_INVALID_NUMBER;
- }
-
- /* Check the data mode (most or least significant bit first) and calculate
- * the correcting bit shift value to apply on the data before sending. */
- if ( tfr_mode->lsb_first ) {
- softc_ptr->bit_shift = 32 - tfr_mode->bits_per_char;
- }
- /* If MSB first. */
- else {
- softc_ptr->bit_shift = 0;
- }
-
- /* Set SPI clock polarity.
- * If clock_inv is TRUE, the clock is active high.*/
- if ( tfr_mode->clock_inv ) {
- /* Rest state of clock is low. */
- BCM2835_REG(BCM2835_SPI_CS) &= ~(1 << 3);
- }
- else {
- /* Rest state of clock is high. */
- BCM2835_REG(BCM2835_SPI_CS) |= (1 << 3);
- }
-
- /* Set SPI clock phase.
- * If clock_phs is true, clock starts toggling
- * at the start of the data transfer. */
- if ( tfr_mode->clock_phs ) {
- /* First SCLK transition at beginning of data bit. */
- BCM2835_REG(BCM2835_SPI_CS) |= (1 << 2);
- }
- else {
- /* First SCLK transition at middle of data bit. */
- BCM2835_REG(BCM2835_SPI_CS) &= ~(1 << 2);
- }
-
- return sc;
-}
-
-/**
- * @brief Reads/writes to/from the SPI bus.
- *
- * @param[in] bushdl Pointer to the libi2c API bus driver data structure.
- * @param[in] rd_buf Read buffer. If not NULL the function will read from
- * the bus and store the read on this buffer.
- * @param[in] wr_buf Write buffer. If not NULL the function will write the
- * contents of this buffer to the bus.
- * @param[in] buffer_size Size of the non-NULL buffer.
- *
- * @retval -1 Could not send/receive data to/from the bus.
- * @retval >=0 The number of bytes read/written.
- */
-static int rpi_spi_read_write(
- rtems_libi2c_bus_t * bushdl,
- unsigned char *rd_buf,
- const unsigned char *wr_buf,
- int buffer_size
-) {
- rpi_spi_softc_t *softc_ptr = &(((rpi_spi_desc_t *)(bushdl))->softc);
-
- uint8_t bytes_per_char = softc_ptr->bytes_per_char;
- uint8_t bit_shift = softc_ptr->bit_shift;
- uint32_t dummy_char = softc_ptr->dummy_char;
-
- uint32_t bytes_sent = buffer_size;
- uint32_t fifo_data;
-
- /* Clear SPI bus FIFOs. */
- BCM2835_REG(BCM2835_SPI_CS) |= (3 << 4);
-
- /* Set SPI transfer active. */
- BCM2835_REG(BCM2835_SPI_CS) |= (1 << 7);
-
- /* If using the SPI bus in interrupt-driven mode. */
-#if SPI_IO_MODE == 1
- softc_ptr->irq_write = 1;
-
- BCM2835_REG(BCM2835_SPI_CS) |= (1 << 9);
-
- if ( rtems_event_transient_receive(RTEMS_WAIT, 0) != RTEMS_SUCCESSFUL ) {
- rtems_event_transient_clear();
-
- return -1;
- }
-
- /* If using the bus in polling mode. */
-#else
- /* Poll TXD bit until there is space to write at least one byte
- * on the TX FIFO. */
- SPI_POLLING((BCM2835_REG(BCM2835_SPI_CS) & (1 << 18)) == 0);
-#endif
-
- /* While there is data to be transferred. */
- while ( buffer_size >= bytes_per_char ) {
- /* If reading from the bus, send a dummy character to the device. */
- if ( rd_buf != NULL ) {
- BCM2835_REG(BCM2835_SPI_FIFO) = dummy_char;
- }
- /* If writing to the bus, move the buffer data to the TX FIFO. */
- else {
- switch ( bytes_per_char ) {
- case 1:
- BCM2835_REG(BCM2835_SPI_FIFO) = (((*wr_buf) & 0xFF) << bit_shift);
- break;
-
- case 2:
- BCM2835_REG(BCM2835_SPI_FIFO) = (((*wr_buf) & 0xFFFF) << bit_shift);
- break;
-
- case 3:
- BCM2835_REG(BCM2835_SPI_FIFO) = (((*wr_buf) & 0xFFFFFF) << bit_shift);
- break;
-
- case 4:
- BCM2835_REG(BCM2835_SPI_FIFO) = ((*wr_buf) << bit_shift);
- break;
-
- default:
- return -1;
- }
-
- wr_buf += bytes_per_char;
-
- buffer_size -= bytes_per_char;
- }
-
- /* If using bi-directional SPI. */
- if ( bidirectional ) {
- /* Change bus direction to read from the slave device. */
- BCM2835_REG(BCM2835_SPI_CS) |= (1 << 12);
- }
-
- /* If using the SPI bus in interrupt-driven mode. */
-#if SPI_IO_MODE == 1
- softc_ptr->irq_write = 0;
-
- BCM2835_REG(BCM2835_SPI_CS) |= (1 << 9);
-
- if ( rtems_event_transient_receive(RTEMS_WAIT, 0) != RTEMS_SUCCESSFUL ) {
- rtems_event_transient_clear();
-
- return -1;
- }
-
- /* If using the bus in polling mode. */
-#else
- /* Poll the Done bit until the data transfer is complete. */
- SPI_POLLING((BCM2835_REG(BCM2835_SPI_CS) & (1 << 16)) == 0);
-
- /* Poll the RXD bit until there is at least one byte
- * on the RX FIFO to be read. */
- SPI_POLLING((BCM2835_REG(BCM2835_SPI_CS) & (1 << 17)) == 0);
-#endif
-
- /* If writing to the bus, read the dummy char sent by the slave device. */
- if ( rd_buf == NULL ) {
- fifo_data = BCM2835_REG(BCM2835_SPI_FIFO) & 0xFF;
- }
-
- /* If reading from the bus, retrieve data from the RX FIFO and
- * store it on the buffer. */
- if ( rd_buf != NULL ) {
- switch ( bytes_per_char ) {
- case 1:
- fifo_data = BCM2835_REG(BCM2835_SPI_FIFO) & 0xFF;
- (*rd_buf) = (fifo_data >> bit_shift);
- break;
-
- case 2:
- fifo_data = BCM2835_REG(BCM2835_SPI_FIFO) & 0xFFFF;
- (*rd_buf) = (fifo_data >> bit_shift);
- break;
-
- case 3:
- fifo_data = BCM2835_REG(BCM2835_SPI_FIFO) & 0xFFFFFF;
- (*rd_buf) = (fifo_data >> bit_shift);
- break;
-
- case 4:
- fifo_data = BCM2835_REG(BCM2835_SPI_FIFO);
- (*rd_buf) = (fifo_data >> bit_shift);
- break;
-
- default:
- return -1;
- }
-
- rd_buf += bytes_per_char;
-
- buffer_size -= bytes_per_char;
- }
-
- /* If using bi-directional SPI. */
- if ( bidirectional ) {
- /* Restore bus direction to write to the slave. */
- BCM2835_REG(BCM2835_SPI_CS) &= ~(1 << 12);
- }
- }
-
- /* If using the SPI bus in interrupt-driven mode. */
-#if SPI_IO_MODE == 1
- softc_ptr->irq_write = 1;
-
- BCM2835_REG(BCM2835_SPI_CS) |= (1 << 9);
-
- if ( rtems_event_transient_receive(RTEMS_WAIT, 0) != RTEMS_SUCCESSFUL ) {
- rtems_event_transient_clear();
-
- return -1;
- }
-
- /* If using the bus in polling mode. */
-#else
- /* Poll the Done bit until the data transfer is complete. */
- SPI_POLLING((BCM2835_REG(BCM2835_SPI_CS) & (1 << 16)) == 0);
-#endif
-
- bytes_sent -= buffer_size;
-
- return bytes_sent;
-}
-
-/**
- * @brief Handler function that is called on any SPI interrupt.
- *
- * There are 2 situations that can generate an interrupt:
- *
- * 1. Transfer (read/write) complete;
- * 2. RX FIFO full.
- *
- * Because the 2. situation is not useful to many applications,
- * the only interrupt that is generated and handled is the
- * transfer complete interrupt.
- *
- * The objective of the handler is then, depending on the transfer
- * context (reading or writing on the bus), to check if there is enough
- * space available on the TX FIFO to send data over the bus (if writing)
- * or if the slave device has sent enough data to be fetched from the
- * RX FIFO (if reading).
- *
- * When any of these two conditions occur, disables further interrupts
- * to be generated and sends a waking event to the transfer task
- * which will allow the following transfer to proceed.
- *
- * @param[in] arg Void pointer to the bus data structure.
- */
-#if SPI_IO_MODE == 1
-static void spi_handler(void* arg)
-{
- rpi_spi_softc_t *softc_ptr = (rpi_spi_softc_t *) arg;
-
- /* If waiting to write to the bus, expect the TXD bit to be set, or
- * if waiting to read from the bus, expect the RXD bit to be set
- * before sending a waking event to the transfer task. */
- if (
- ( softc_ptr->irq_write == 1 &&
- (BCM2835_REG(BCM2835_SPI_CS) & (1 << 18)) != 0
- ) ||
- ( softc_ptr->irq_write == 0 &&
- (BCM2835_REG(BCM2835_SPI_CS) & (1 << 17)) != 0
- )
- ) {
- /* Disable the SPI interrupt generation when a transfer is complete. */
- BCM2835_REG(BCM2835_SPI_CS) &= ~(1 << 9);
-
- /* Allow the transfer process to continue. */
- rtems_event_transient_send(softc_ptr->task_id);
- }
-}
-#endif
-
-/**
- * @brief Low level function to initialize the SPI bus.
- * This function is used by the libi2c API.
- *
- * @param[in] bushdl Pointer to the libi2c API bus driver data structure.
- *
- * @retval RTEMS_SUCCESSFUL SPI bus successfully initialized.
- * @retval Any other status code @see rtems_interrupt_handler_install().
- */
-static rtems_status_code rpi_libi2c_spi_init(rtems_libi2c_bus_t * bushdl)
-{
- rpi_spi_softc_t *softc_ptr = &(((rpi_spi_desc_t *)(bushdl))->softc);
- rtems_status_code sc = RTEMS_SUCCESSFUL;
-
- if ( softc_ptr->initialized == 1 ) {
- return sc;
- }
-
- softc_ptr->initialized = 1;
-
- /* If using the SPI bus in interrupt-driven mode. */
-#if SPI_IO_MODE == 1
- softc_ptr->task_id = rtems_task_self();
-
- sc = rtems_interrupt_handler_install(
- BCM2835_IRQ_ID_SPI,
- NULL,
- RTEMS_INTERRUPT_UNIQUE,
- (rtems_interrupt_handler) spi_handler,
- softc_ptr
- );
-#endif
-
- return sc;
-}
-
-/**
- * @brief Low level function that would send a start condition over an I2C bus.
- * As it is not required to access a SPI bus it is here just to satisfy
- * the libi2c API, which requires this function.
- *
- * @param[in] bushdl Pointer to the libi2c API bus driver data structure.
- *
- * @retval RTEMS_SUCCESSFUL
- */
-static rtems_status_code rpi_libi2c_spi_send_start(rtems_libi2c_bus_t * bushdl)
-{
- return RTEMS_SUCCESSFUL;
-}
-
-/**
- * @brief Low level function that terminates a SPI transfer.
- * It stops the SPI transfer and unselects the current SPI slave device.
- * This function is used by the libi2c API.
- *
- * @param[in] bushdl Pointer to the libi2c API bus driver data structure.
- *
- * @retval RTEMS_SUCCESSFUL The slave device has been successfully unselected.
- * @retval RTEMS_INVALID_ADDRESS The stored slave address is neither 0 or 1.
- */
-static rtems_status_code rpi_libi2c_spi_stop(rtems_libi2c_bus_t * bushdl)
-{
- rpi_spi_softc_t *softc_ptr = &(((rpi_spi_desc_t *)(bushdl))->softc);
-
- uint32_t addr = softc_ptr->current_slave_addr;
- uint32_t chip_select_bit = 21 + addr;
-
- /* Set SPI transfer as not active. */
- BCM2835_REG(BCM2835_SPI_CS) &= ~(1 << 7);
-
- /* Unselect the active SPI slave. */
- switch ( addr ) {
- case 0:
- case 1:
- BCM2835_REG(BCM2835_SPI_CS) |= (1 << chip_select_bit);
-
- break;
-
- default:
- return RTEMS_INVALID_ADDRESS;
- }
-
- return RTEMS_SUCCESSFUL;
-}
-
-/**
- * @brief Low level function which addresses a SPI slave device.
- * This function is used by the libi2c API.
- *
- * @param[in] bushdl Pointer to the libi2c API bus driver data structure.
- * @param[in] addr SPI slave select line address (0 for CE0 or 1 for CE1).
- * @param[in] rw This values is unnecessary to address a SPI device and its
- * presence here is only to fulfill a libi2c requirement.
- *
- * @retval RTEMS_SUCCESSFUL The slave device has been successfully addressed.
- * @retval RTEMS_INVALID_ADDRESS The received address is neither 0 or 1.
- */
-static rtems_status_code rpi_libi2c_spi_send_addr(
- rtems_libi2c_bus_t * bushdl,
- uint32_t addr,
- int rw
-) {
- rpi_spi_softc_t *softc_ptr = &(((rpi_spi_desc_t *)(bushdl))->softc);
-
- /* Calculates the bit corresponding to the received address
- * on the SPI control register. */
- uint32_t chip_select_bit = 21 + addr;
-
- /* Save which slave will be currently addressed,
- * so it can be unselected later. */
- softc_ptr->current_slave_addr = addr;
-
- /* Select one of the two available SPI slave address lines. */
- switch ( addr ) {
- case 0:
- case 1:
- BCM2835_REG(BCM2835_SPI_CS) &= ~(1 << chip_select_bit);
- break;
-
- default:
- return RTEMS_INVALID_ADDRESS;
- }
-
- return RTEMS_SUCCESSFUL;
-}
-
-/**
- * @brief Low level function that reads a number of bytes from the SPI bus
- * on to a buffer.
- * This function is used by the libi2c API.
- *
- * @param[in] bushdl Pointer to the libi2c API bus driver data structure.
- * @param[in] bytes Buffer where the data read from the bus will be stored.
- * @param[in] nbytes Number of bytes to be read from the bus to the bytes buffer.
- *
- * @retval @see rpi_spi_read_write().
- */
-static int rpi_libi2c_spi_read_bytes(
- rtems_libi2c_bus_t * bushdl,
- unsigned char *bytes,
- int nbytes
-) {
- return rpi_spi_read_write(bushdl, bytes, NULL, nbytes);
-}
-
-/**
- * @brief Low level function that writes a number of bytes from a buffer
- * to the SPI bus.
- * This function is used by the libi2c API.
- *
- * @param[in] bushdl Pointer to the libi2c API bus driver data structure.
- * @param[in] bytes Buffer with data to send over the SPI bus.
- * @param[in] nbytes Number of bytes to be written from the bytes buffer
- to the bus.
- *
- * @retval @see rpi_spi_read_write().
- */
-static int rpi_libi2c_spi_write_bytes(
- rtems_libi2c_bus_t * bushdl,
- unsigned char *bytes,
- int nbytes
-) {
- return rpi_spi_read_write(bushdl, NULL, bytes, nbytes);
-}
-
-/**
- * @brief Low level function that is used to perform ioctl
- * operations on the bus. Currently only setups
- * the bus transfer mode.
- * This function is used by the libi2c API.
- *
- * @param[in] bushdl Pointer to the libi2c API bus driver data structure.
- * @param[in] cmd IOCTL request command.
- * @param[in] arg Arguments needed to fulfill the requested IOCTL command.
- *
- * @retval -1 Unknown request command.
- * @retval >=0 @see rpi_spi_set_tfr_mode().
- */
-static int rpi_libi2c_spi_ioctl(rtems_libi2c_bus_t * bushdl, int cmd, void *arg)
-{
- switch ( cmd ) {
- case RTEMS_LIBI2C_IOCTL_SET_TFRMODE:
- return rpi_spi_set_tfr_mode(
- bushdl,
- (const rtems_libi2c_tfr_mode_t *)arg
- );
- default:
- return -1;
- }
-
- return 0;
-}
-
-static rtems_libi2c_bus_ops_t rpi_spi_ops = {
- .init = rpi_libi2c_spi_init,
- .send_start = rpi_libi2c_spi_send_start,
- .send_stop = rpi_libi2c_spi_stop,
- .send_addr = rpi_libi2c_spi_send_addr,
- .read_bytes = rpi_libi2c_spi_read_bytes,
- .write_bytes = rpi_libi2c_spi_write_bytes,
- .ioctl = rpi_libi2c_spi_ioctl
-};
-
-static rpi_spi_desc_t rpi_spi_bus_desc = {
- {
- .ops = &rpi_spi_ops,
- .size = sizeof(rpi_spi_bus_desc)
- },
- {
- .initialized = 0
- }
-};
-
-int rpi_spi_init(bool bidirectional_mode)
-{
- /* Initialize the libi2c API. */
- rtems_libi2c_initialize();
-
- /* Enable the SPI interface on the Raspberry Pi. */
- rtems_gpio_initialize();
-
- assert ( rpi_gpio_select_spi() == RTEMS_SUCCESSFUL );
-
- bidirectional = bidirectional_mode;
-
- /* Clear SPI control register and clear SPI FIFOs. */
- BCM2835_REG(BCM2835_SPI_CS) = (3 << 4);
-
- /* Register the SPI bus. */
- return rtems_libi2c_register_bus("/dev/spi", &(rpi_spi_bus_desc.bus_desc));
-}
diff --git a/c/src/lib/libbsp/m68k/gen68360/spi/m360_spi.c b/c/src/lib/libbsp/m68k/gen68360/spi/m360_spi.c
deleted file mode 100644
index f60b5b6a51..0000000000
--- a/c/src/lib/libbsp/m68k/gen68360/spi/m360_spi.c
+++ /dev/null
@@ -1,852 +0,0 @@
-/*===============================================================*\
-| Project: RTEMS support for PGH360 |
-+-----------------------------------------------------------------+
-| Copyright (c) 2008 |
-| Embedded Brains GmbH |
-| Obere Lagerstr. 30 |
-| D-82178 Puchheim |
-| Germany |
-| rtems@embedded-brains.de |
-+-----------------------------------------------------------------+
-| The license and distribution terms for this file may be |
-| found in the file LICENSE in this distribution or at |
-| |
-| http://www.rtems.org/license/LICENSE. |
-| |
-+-----------------------------------------------------------------+
-| this file contains the M360 SPI driver |
-\*===============================================================*/
-#include <stdlib.h>
-#include <bsp.h>
-#include <rtems/m68k/m68360.h>
-#include <rtems/m68k/m360_spi.h>
-#include <rtems/error.h>
-#include <rtems/bspIo.h>
-#include <errno.h>
-#include <rtems/libi2c.h>
-
-#undef DEBUG
-static m360_spi_softc_t *m360_spi_softc_ptr;
-/*
- * this is a dummy receive buffer for sequences,
- * where only send data are available
- */
-uint8_t m360_spi_dummy_rxbuf[2];
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code m360_spi_baud_to_mode
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| determine proper divider value |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- uint32_t baudrate, /* desired baudrate */
- uint32_t *spimode /* result value */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- uint32_t divider;
- uint16_t tmpmode = 0;
- /*
- * determine clock divider and DIV16 bit
- */
- divider = m360_clock_rate/baudrate;
- if (divider > 64) {
- tmpmode = M360_SPMODE_DIV16;
- divider /= 16;
- }
- if ((divider < 1) ||
- (divider > 64)) {
- return RTEMS_INVALID_NUMBER;
- }
- else {
- tmpmode |= M360_SPMODE_PM(divider/4-1);
- }
- *spimode = tmpmode;
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code m360_spi_char_mode
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| determine proper value for character size |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- m360_spi_softc_t *softc_ptr, /* handle */
- uint32_t bits_per_char, /* bits per character */
- bool lsb_first, /* TRUE: send LSB first */
- uint16_t *spimode /* result value */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- uint16_t tmpmode;
-
- /*
- * calculate data format
- */
- if ((bits_per_char >= 4) &&
- (bits_per_char <= 16)) {
- tmpmode = M360_SPMODE_CLEN( bits_per_char-1);
- }
- else {
- return RTEMS_INVALID_NUMBER;
- }
-
- *spimode = tmpmode;
- return 0;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static int m360_spi_wait
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| wait for spi to become idle |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- m360_spi_softc_t *softc_ptr /* handle */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- uint16_t act_status;
- rtems_status_code rc;
- uint32_t tout;
-
-#if defined(DEBUG)
- printk("m360_spi_wait called... ");
-#endif
- if (softc_ptr->initialized) {
- /*
- * allow interrupts, when receiver is not empty
- */
- m360.spim = (M360_SPIE_TXE | M360_SPIE_TXB |
- M360_SPIE_BSY | M360_SPIE_MME);
-
- rc = rtems_semaphore_obtain(softc_ptr->irq_sema_id,
- RTEMS_WAIT,
- RTEMS_NO_TIMEOUT);
- if (rc != RTEMS_SUCCESSFUL) {
- return rc;
- }
- }
- else {
- tout = 0;
- do {
- if (tout++ > 1000000) {
-#if defined(DEBUG)
- printk("... exit with RTEMS_TIMEOUT\r\n");
-#endif
- return RTEMS_TIMEOUT;
- }
- /*
- * wait for SPI to terminate
- */
- } while (!(m360.spie & M360_SPIE_TXB));
- }
-
- act_status = m360.spie;
- if ((act_status & (M360_SPIE_TXE | M360_SPIE_TXB |
- M360_SPIE_BSY | M360_SPIE_MME))!= M360_SPIE_TXB) {
-#if defined(DEBUG)
- printk("... exit with RTEMS_IO_ERROR,"
- "act_status=0x%04x,mask=0x%04x,desired_status=0x%04x\r\n",
- act_status,status_mask,desired_status);
-#endif
- return RTEMS_IO_ERROR;
- }
-#if defined(DEBUG)
- printk("... exit OK\r\n");
-#endif
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_isr m360_spi_irq_handler
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| handle interrupts |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_vector_number v /* vector number */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| <none> |
-\*=========================================================================*/
-{
- m360_spi_softc_t *softc_ptr = m360_spi_softc_ptr;
-
- /*
- * disable interrupt mask
- */
- m360.spim = 0;
- if (softc_ptr->initialized) {
- rtems_semaphore_release(softc_ptr->irq_sema_id);
- }
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static void m360_spi_install_irq_handler
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| (un-)install the interrupt handler |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- m360_spi_softc_t *softc_ptr, /* ptr to control structure */
- int install /* TRUE: install, FALSE: remove */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| <none> |
-\*=========================================================================*/
-{
- rtems_status_code rc = RTEMS_SUCCESSFUL;
-
- /*
- * (un-)install handler for SPI device
- */
- if (install) {
- /*
- * create semaphore for IRQ synchronization
- */
- rc = rtems_semaphore_create(rtems_build_name('s','p','i','s'),
- 0,
- RTEMS_FIFO
- | RTEMS_SIMPLE_BINARY_SEMAPHORE,
- 0,
- &softc_ptr->irq_sema_id);
- if (rc != RTEMS_SUCCESSFUL) {
- rtems_panic("SPI: cannot create semaphore");
- }
- if (rc == RTEMS_SUCCESSFUL) {
- rc = rtems_interrupt_catch (m360_spi_irq_handler,
- (m360.cicr & 0xE0) | 0x05,
- &softc_ptr->old_handler);
- if (rc != RTEMS_SUCCESSFUL) {
- rtems_panic("SPI: cannot install IRQ handler");
- }
- }
- /*
- * enable IRQ in CPIC
- */
- if (rc == RTEMS_SUCCESSFUL) {
- m360.cimr |= (1 << 5);
- }
- }
- else {
- rtems_isr_entry old_handler;
- /*
- * disable IRQ in CPIC
- */
- if (rc == RTEMS_SUCCESSFUL) {
- m360.cimr &= ~(1 << 5);
- }
- rc = rtems_interrupt_catch (softc_ptr->old_handler,
- (m360.cicr & 0xE0) | 0x05,
- &old_handler);
- if (rc != RTEMS_SUCCESSFUL) {
- rtems_panic("SPI: cannot uninstall IRQ handler");
- }
- /*
- * delete sync semaphore
- */
- if (softc_ptr->irq_sema_id != 0) {
- rc = rtems_semaphore_delete(softc_ptr->irq_sema_id);
- if (rc != RTEMS_SUCCESSFUL) {
- rtems_panic("SPI: cannot delete semaphore");
- }
- }
- }
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-rtems_status_code m360_spi_init
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| initialize the driver |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh /* bus specifier structure */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- m360_spi_softc_t *softc_ptr = &(((m360_spi_desc_t *)(bh))->softc);
- rtems_status_code rc = RTEMS_SUCCESSFUL;
-
-#if defined(DEBUG)
- printk("m360_spi_init called... ");
-#endif
- /*
- * init HW registers:
- */
- /*
- * FIXME: set default mode in SPMODE
- */
-
- /*
- * allocate BDs (1x RX, 1x TX)
- */
- if (rc == RTEMS_SUCCESSFUL) {
- softc_ptr->rx_bd = M360AllocateBufferDescriptors (1);
- softc_ptr->tx_bd = M360AllocateBufferDescriptors (1);
- if ((softc_ptr->rx_bd == NULL) ||
- (softc_ptr->tx_bd == NULL)) {
- rc = RTEMS_NO_MEMORY;
- }
- }
- /*
- * set parameter RAM
- */
- m360.spip.rbase = (char *)softc_ptr->rx_bd - (char *)&m360;
- m360.spip.tbase = (char *)softc_ptr->tx_bd - (char *)&m360;
- m360.spip.rfcr = M360_RFCR_MOT | M360_RFCR_DMA_SPACE;
- m360.spip.tfcr = M360_RFCR_MOT | M360_RFCR_DMA_SPACE;
- m360.spip.mrblr = 2;
-
- /*
- * issue "InitRxTx" Command to CP
- */
- M360ExecuteRISC (M360_CR_OP_INIT_RX_TX | M360_CR_CHAN_SPI);
-
- /*
- * init interrupt stuff
- */
- if (rc == RTEMS_SUCCESSFUL) {
- m360_spi_install_irq_handler(softc_ptr,TRUE);
- }
- if (rc == RTEMS_SUCCESSFUL) {
- /*
- * set up ports
- * LINE PAR DIR DAT
- * -----------------------
- * MOSI 1 1 x
- * MISO 1 1 x
- * CLK 1 1 x
- */
-
- /* set Port B Pin Assignment Register... */
- m360.pbpar =
- m360.pbpar
- | M360_PB_SPI_MISO_MSK
- | M360_PB_SPI_MOSI_MSK
- | M360_PB_SPI_CLK_MSK;
-
- /* set Port B Data Direction Register... */
- m360.pbdir =
- m360.pbdir
- | M360_PB_SPI_MISO_MSK
- | M360_PB_SPI_MOSI_MSK
- | M360_PB_SPI_CLK_MSK;
- }
- /*
- * mark, that we have initialized
- */
- if (rc == RTEMS_SUCCESSFUL) {
- softc_ptr->initialized = TRUE;
- }
-#if defined(DEBUG)
- printk("... exit OK\r\n");
-#endif
- return rc;
-}
-
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static int m360_spi_read_write_bytes
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| transmit/receive some bytes from SPI device |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- unsigned char *rbuf, /* buffer to store bytes */
- const unsigned char *tbuf, /* buffer to send bytes */
- int len /* number of bytes to transceive */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| number of bytes received or (negative) error code |
-\*=========================================================================*/
-{
- m360_spi_softc_t *softc_ptr = &(((m360_spi_desc_t *)(bh))->softc);
- rtems_status_code rc = RTEMS_SUCCESSFUL;
- int bc = 0;
-
-#if defined(DEBUG)
- printk("m360_spi_read_write_bytes called... ");
-#endif
-
- /*
- * prepare RxBD
- */
- if (rc == RTEMS_SUCCESSFUL) {
- if (rbuf == NULL) {
- /*
- * no Tx buffer: receive to dummy buffer
- */
- m360.spip.mrblr = sizeof(m360_spi_dummy_rxbuf);
- softc_ptr->rx_bd->buffer = m360_spi_dummy_rxbuf;
- softc_ptr->rx_bd->length = 0;
- softc_ptr->rx_bd->status = (M360_BD_EMPTY | M360_BD_WRAP |
- M360_BD_CONTINUOUS);
- }
- else {
- m360.spip.mrblr = len;
- softc_ptr->rx_bd->buffer = rbuf;
- softc_ptr->rx_bd->length = 0;
- softc_ptr->rx_bd->status = (M360_BD_EMPTY | M360_BD_WRAP);
- }
- }
- /*
- * prepare TxBD
- */
- if (rc == RTEMS_SUCCESSFUL) {
- if (tbuf == NULL) {
- /*
- * FIXME: no Tx buffer: transmit from dummy buffer
- */
- softc_ptr->tx_bd->buffer = m360_spi_dummy_rxbuf;
- softc_ptr->tx_bd->length = len;
- softc_ptr->tx_bd->status = (M360_BD_READY | M360_BD_WRAP |
- M360_BD_CONTINUOUS);
- }
- else {
- softc_ptr->tx_bd->buffer = tbuf;
- softc_ptr->tx_bd->length = len;
- softc_ptr->tx_bd->status = (M360_BD_READY | M360_BD_WRAP);
- }
- }
-
- if (rc == RTEMS_SUCCESSFUL) {
- /*
- * set START command
- */
- m360.spcom = M360_SPCOM_STR;
- /*
- * wait for SPI to finish
- */
- rc = m360_spi_wait(softc_ptr);
- }
-#if defined(DEBUG)
- printk("... exit OK, rc=%d\r\n",bc);
-#endif
- return (rc == RTEMS_SUCCESSFUL) ? bc : -rc;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-int m360_spi_read_bytes
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| receive some bytes from SPI device |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- unsigned char *buf, /* buffer to store bytes */
- int len /* number of bytes to receive */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| number of bytes received or (negative) error code |
-\*=========================================================================*/
-{
- return m360_spi_read_write_bytes(bh,buf,NULL,len);
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-int m360_spi_write_bytes
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| send some bytes to SPI device |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- unsigned char *buf, /* buffer to send */
- int len /* number of bytes to send */
-
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| number of bytes sent or (negative) error code |
-\*=========================================================================*/
-{
- return m360_spi_read_write_bytes(bh,NULL,buf,len);
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-rtems_status_code m360_spi_set_tfr_mode
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| set SPI to desired baudrate/clock mode/character mode |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- const rtems_libi2c_tfr_mode_t *tfr_mode /* transfer mode info */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| rtems_status_code |
-\*=========================================================================*/
-{
- m360_spi_softc_t *softc_ptr = &(((m360_spi_desc_t *)(bh))->softc);
- uint32_t spimode_baud,spimode;
- rtems_status_code rc = RTEMS_SUCCESSFUL;
- /*
- * FIXME: set proper mode
- */
- if (rc == RTEMS_SUCCESSFUL) {
- rc = m360_spi_baud_to_mode(tfr_mode->baudrate,&spimode_baud);
- }
- if (rc == RTEMS_SUCCESSFUL) {
- rc = m360_spi_char_mode(softc_ptr,
- tfr_mode->bits_per_char,
- tfr_mode->lsb_first,
- &spimode);
- }
- if (rc == RTEMS_SUCCESSFUL) {
- spimode |= spimode_baud;
- spimode |= M360_SPMODE_MASTER; /* set master mode */
- if (!tfr_mode->lsb_first) {
- spimode |= M360_SPMODE_REV;
- }
- if (tfr_mode->clock_inv) {
- spimode |= M360_SPMODE_CI;
- }
- if (tfr_mode->clock_phs) {
- spimode |= M360_SPMODE_CP;
- }
- }
-
- if (rc == RTEMS_SUCCESSFUL) {
- /*
- * disable SPI
- */
- m360.spmode &= ~M360_SPMODE_EN;
- /*
- * set new mode and reenable SPI
- */
- m360.spmode = spimode | M360_SPMODE_EN;
- }
- return rc;
-}
-
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-int m360_spi_ioctl
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| perform selected ioctl function for SPI |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- int cmd, /* ioctl command code */
- void *arg /* additional argument array */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| rtems_status_code |
-\*=========================================================================*/
-{
- int ret_val = -1;
-
- switch(cmd) {
- case RTEMS_LIBI2C_IOCTL_SET_TFRMODE:
- ret_val =
- -m360_spi_set_tfr_mode(bh,
- (const rtems_libi2c_tfr_mode_t *)arg);
- break;
- case RTEMS_LIBI2C_IOCTL_READ_WRITE:
- ret_val =
- m360_spi_read_write_bytes(bh,
- ((rtems_libi2c_read_write_t *)arg)->rd_buf,
- ((rtems_libi2c_read_write_t *)arg)->wr_buf,
- ((rtems_libi2c_read_write_t *)arg)->byte_cnt);
- break;
- default:
- ret_val = -RTEMS_NOT_DEFINED;
- break;
- }
- return ret_val;
-}
-
-/*=========================================================================*\
-| Board-specific adaptation functions |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_sel_addr
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| address a slave device on the bus |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- uint32_t addr, /* address to send on bus */
- int rw /* 0=write,1=read */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
-#if defined(PGH360)
- /*
- * select given device
- */
- /*
- * GPIO1[24] is SPI_A0
- * GPIO1[25] is SPI_A1
- * GPIO1[26] is SPI_A2
- * set pins to address
- */
- switch(addr) {
- case PGH360_SPI_ADDR_EEPROM:
- m360.pbdat &= ~PGH360_PB_SPI_EEP_CE_MSK;
- break;
- case PGH360_SPI_ADDR_DISP4_DATA:
- m360.pbdat = (m360.pbdat
- & ~(PGH360_PB_SPI_DISP4_CE_MSK |
- PGH360_PB_SPI_DISP4_RS_MSK));
- break;
- case PGH360_SPI_ADDR_DISP4_CTRL:
- m360.pbdat = (m360.pbdat
- & ~(PGH360_PB_SPI_DISP4_CE_MSK)
- | PGH360_PB_SPI_DISP4_RS_MSK);
- break;
- default:
- return RTEMS_INVALID_NUMBER;
- }
-#endif /* PGH360 */
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_send_start_dummy
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| dummy function, SPI has no start condition |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh /* bus specifier structure */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- return 0;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_send_stop
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| deselect SPI |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh /* bus specifier structure */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
-#if defined(DEBUG)
- printk("bsp_spi_send_stop called... ");
-#endif
-#if defined(PGH360)
- m360.pbdat = (m360.pbdat
- | PGH360_PB_SPI_DISP4_CE_MSK
- | PGH360_PB_SPI_EEP_CE_MSK);
-#endif
-#if defined(DEBUG)
- printk("... exit OK\r\n");
-#endif
- return 0;
-}
-
-/*=========================================================================*\
-| list of handlers |
-\*=========================================================================*/
-
-rtems_libi2c_bus_ops_t bsp_spi_ops = {
- init: m360_spi_init,
- send_start: bsp_spi_send_start_dummy,
- send_stop: bsp_spi_send_stop,
- send_addr: bsp_spi_sel_addr,
- read_bytes: m360_spi_read_bytes,
- write_bytes: m360_spi_write_bytes,
- ioctl: m360_spi_ioctl
-};
-
-static m360_spi_desc_t bsp_spi_bus_desc = {
- {/* public fields */
- ops: &bsp_spi_ops,
- size: sizeof(bsp_spi_bus_desc)
- },
- { /* our private fields */
- initialized: FALSE
- }
-};
-
-/*=========================================================================*\
-| initialization |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-rtems_status_code bsp_register_spi
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| register SPI bus and devices |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- void /* <none> */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| 0 or error code |
-\*=========================================================================*/
-{
- int ret_code;
- int spi_busno;
-
- /*
- * init I2C library (if not already done)
- */
- rtems_libi2c_initialize ();
-
- /*
- * init port pins used to address/select SPI devices
- */
-
-#if defined(PGH360)
-
- /*
- * set up ports
- * LINE PAR DIR DAT
- * -----------------------
- * EEP_CE 0 1 act-high
- * DISP4_CS 0 1 act-high
- * DISP4_RS 0 1 active
- */
-
- /* set Port B Pin Assignment Register... */
- m360.pbpar =
- (m360.pbpar
- & ~(PGH360_PB_SPI_EEP_CE_MSK
- | PGH360_PB_SPI_DISP4_CE_MSK
- | PGH360_PB_SPI_DISP4_RS_MSK));
-
- /* set Port B Data Direction Register... */
- m360.pbdir =
- m360.pbdir
- | PGH360_PB_SPI_EEP_CE_MSK
- | PGH360_PB_SPI_DISP4_CE_MSK
- | PGH360_PB_SPI_DISP4_RS_MSK;
-
- /* set Port B Data Register to inactive CE state */
- m360.pbdat =
- m360.pbdat
- | PGH360_PB_SPI_DISP4_CE_MSK
- | PGH360_PB_SPI_DISP4_RS_MSK;
-#endif
-
- /*
- * register SPI bus
- */
- ret_code = rtems_libi2c_register_bus("/dev/spi",
- &(bsp_spi_bus_desc.bus_desc));
- if (ret_code < 0) {
- return -ret_code;
- }
- spi_busno = ret_code;
-#if defined(PGH360)
- /*
- * register devices
- */
-#if 0
- ret_code = rtems_libi2c_register_drv(RTEMS_BSP_SPI_FLASH_DEVICE_NAME,
- spi_flash_m25p40_rw_driver_descriptor,
- spi_busno,0x00);
- if (ret_code < 0) {
- return -ret_code;
- }
-#endif
-#endif /* defined(PGH360) */
- /*
- * FIXME: further drivers, when available
- */
- return 0;
-}
-
-
diff --git a/c/src/lib/libbsp/m68k/gen68360/spi/m360_spi.h b/c/src/lib/libbsp/m68k/gen68360/spi/m360_spi.h
deleted file mode 100644
index 8e9b2fb208..0000000000
--- a/c/src/lib/libbsp/m68k/gen68360/spi/m360_spi.h
+++ /dev/null
@@ -1,161 +0,0 @@
-/**
- * @file
- *
- * @ingroup m68k_m360spi
- *
- * @brief this file contains the MC68360 SPI driver declarations
- */
-
-/*===============================================================*\
-| Project: RTEMS support for MC68360 |
-+-----------------------------------------------------------------+
-| Copyright (c) 2008 |
-| Embedded Brains GmbH |
-| Obere Lagerstr. 30 |
-| D-82178 Puchheim |
-| Germany |
-| rtems@embedded-brains.de |
-+-----------------------------------------------------------------+
-| The license and distribution terms for this file may be |
-| found in the file LICENSE in this distribution or at |
-| |
-| http://www.rtems.org/license/LICENSE. |
-| |
-\*===============================================================*/
-
-/**
- * @defgroup m68k_m360spi M360_SPIDRV Support
- *
- * @ingroup m68k_gen68360
- *
- * @brief M360_SPIDRV Support Package
- */
-
-#ifndef _M360_SPIDRV_H
-#define _M360_SPIDRV_H
-
-#include <rtems/m68k/m68360.h>
-#include <rtems/libi2c.h>
-#include <rtems/irq.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef struct m360_spi_softc {
- int initialized;
- rtems_id irq_sema_id;
- rtems_isr_entry old_handler;
- m360BufferDescriptor_t *rx_bd;
- m360BufferDescriptor_t *tx_bd;
-} m360_spi_softc_t ;
-
-typedef struct {
- rtems_libi2c_bus_t bus_desc;
- m360_spi_softc_t softc;
-} m360_spi_desc_t;
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-rtems_status_code m360_spi_init
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| initialize the driver |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh /* bus specifier structure */
- );
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-int m360_spi_read_bytes
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| receive some bytes from SPI device |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- unsigned char *buf, /* buffer to store bytes */
- int len /* number of bytes to receive */
- );
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| number of bytes received or (negative) error code |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-int m360_spi_write_bytes
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| send some bytes to SPI device |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- unsigned char *buf, /* buffer to send */
- int len /* number of bytes to send */
-
- );
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| number of bytes sent or (negative) error code |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-rtems_status_code m360_spi_set_tfr_mode
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| set SPI to desired baudrate/clock mode/character mode |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- const rtems_libi2c_tfr_mode_t *tfr_mode /* transfer mode info */
- );
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| rtems_status_code |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-int m360_spi_ioctl
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| perform selected ioctl function for SPI |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- int cmd, /* ioctl command code */
- void *arg /* additional argument array */
- );
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| rtems_status_code |
-\*=========================================================================*/
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif /* _M360_SPIDRV_H */
diff --git a/c/src/lib/libbsp/powerpc/gen83xx/Makefile.am b/c/src/lib/libbsp/powerpc/gen83xx/Makefile.am
index 716a0061c2..eb2abcc4ca 100644
--- a/c/src/lib/libbsp/powerpc/gen83xx/Makefile.am
+++ b/c/src/lib/libbsp/powerpc/gen83xx/Makefile.am
@@ -58,7 +58,7 @@ librtemsbsp_a_SOURCES += ../../../../../../bsps/powerpc/gen83xx/console/console-
# bsp_i2c
librtemsbsp_a_SOURCES += ../../../../../../bsps/powerpc/gen83xx/i2c/i2c_init.c
# bsp_spi
-librtemsbsp_a_SOURCES += spi/spi_init.c
+librtemsbsp_a_SOURCES += ../../../../../../bsps/powerpc/gen83xx/spi/spi_init.c
librtemsbsp_a_SOURCES += ../../../../../../bsps/powerpc/shared/cache/cache.c
librtemsbsp_a_SOURCES += ../../../../../../bsps/powerpc/shared/btimer/btimer-ppc-dec.c
diff --git a/c/src/lib/libbsp/powerpc/gen83xx/spi/spi_init.c b/c/src/lib/libbsp/powerpc/gen83xx/spi/spi_init.c
deleted file mode 100644
index a2a2683d59..0000000000
--- a/c/src/lib/libbsp/powerpc/gen83xx/spi/spi_init.c
+++ /dev/null
@@ -1,416 +0,0 @@
-/*===============================================================*\
-| Project: RTEMS support for MPC83xx |
-+-----------------------------------------------------------------+
-| Copyright (c) 2007 |
-| Embedded Brains GmbH |
-| Obere Lagerstr. 30 |
-| D-82178 Puchheim |
-| Germany |
-| rtems@embedded-brains.de |
-+-----------------------------------------------------------------+
-| The license and distribution terms for this file may be |
-| found in the file LICENSE in this distribution or at |
-| |
-| http://www.rtems.org/license/LICENSE. |
-| |
-+-----------------------------------------------------------------+
-| this file contains the low level MPC83xx SPI driver parameters |
-| and board-specific functions |
-\*===============================================================*/
-
-
-#include <mpc83xx/mpc83xx_spidrv.h>
-#include <bsp/irq.h>
-#include <bsp.h>
-
-#if defined(MPC83XX_BOARD_MPC8313ERDB)
-
-#include <libchip/spi-sd-card.h>
-
-#elif defined(MPC83XX_BOARD_MPC8349EAMDS)
-
-#include <libchip/spi-flash-m25p40.h>
-
-#elif defined(MPC83XX_BOARD_HSC_CM01)
-
-#include <libchip/spi-fram-fm25l256.h>
-
-#endif
-
-/*=========================================================================*\
-| Board-specific adaptation functions |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_sel_addr
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| address a slave device on the bus |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- uint32_t addr, /* address to send on bus */
- int rw /* 0=write,1=read */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
-
-#if defined( MPC83XX_BOARD_MPC8313ERDB)
-
- /* Check address */
- if (addr > 0) {
- return RTEMS_INVALID_NUMBER;
- }
-
- /* SCS (active low) */
- mpc83xx.gpio [0].gpdat &= ~0x20000000;
-
-#elif defined( MPC83XX_BOARD_MPC8349EAMDS)
-
- /*
- * check device address for valid range
- */
- if (addr > 0) {
- return RTEMS_INVALID_NUMBER;
- }
- /*
- * select given device
- * GPIO1[0] is nSEL_SPI for M25P40
- * set it to be active/low
- */
- mpc83xx.gpio[0].gpdat &= ~(1 << (31- 0));
-
-#elif defined( MPC83XX_BOARD_HSC_CM01)
-
- /*
- * check device address for valid range
- */
- if (addr > 7) {
- return RTEMS_INVALID_NUMBER;
- }
- /*
- * select given device
- */
- /*
- * GPIO1[24] is SPI_A0
- * GPIO1[25] is SPI_A1
- * GPIO1[26] is SPI_A2
- * set pins to address
- */
- mpc83xx.gpio[0].gpdat =
- (mpc83xx.gpio[0].gpdat & ~(0x7 << (31-26)))
- | (addr << (31-26));
- /*
- * GPIO1[27] is high-active strobe
- */
- mpc83xx.gpio[0].gpdat |= (1 << (31- 27));
-
-#endif
-
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_send_start_dummy
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| dummy function, SPI has no start condition |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh /* bus specifier structure */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
-
-#if defined( MPC83XX_BOARD_MPC8313ERDB)
-
- /* SCS (inactive high) */
- mpc83xx.gpio [0].gpdat |= 0x20000000;
-
-#elif defined( MPC83XX_BOARD_MPC8349EAMDS)
-
- /*
- * GPIO1[0] is nSEL_SPI for M25P40
- * set it to inactive/high
- */
- mpc83xx.gpio[0].gpdat |= (1 << (31- 0));
-
-#elif defined( MPC83XX_BOARD_HSC_CM01)
-
- /*
- * GPIO1[27] is high-active strobe
- * set it to inactive/ low
- */
- mpc83xx.gpio[0].gpdat &= ~(0x1 << (31-27));
-
-#endif
-
- return 0;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_send_stop
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| deselect SPI |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh /* bus specifier structure */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
-#if defined(DEBUG)
- printk("bsp_spi_send_stop called... ");
-#endif
-
-#if defined( MPC83XX_BOARD_MPC8313ERDB)
-
- /* SCS (inactive high) */
- mpc83xx.gpio [0].gpdat |= 0x20000000;
-
-#elif defined( MPC83XX_BOARD_MPC8349EAMDS)
-
- /*
- * deselect given device
- * GPIO1[0] is nSEL_SPI for M25P40
- * set it to be inactive/high
- */
- mpc83xx.gpio[0].gpdat |= (1 << (31- 0));
-
-#elif defined( MPC83XX_BOARD_HSC_CM01)
-
- /*
- * deselect device
- * GPIO1[27] is high-active strobe
- */
- mpc83xx.gpio[0].gpdat &= ~(1 << (31- 27));
-
-#endif
-
-#if defined(DEBUG)
- printk("... exit OK\r\n");
-#endif
- return 0;
-}
-
-/*=========================================================================*\
-| list of handlers |
-\*=========================================================================*/
-
-rtems_libi2c_bus_ops_t bsp_spi_ops = {
- .init = mpc83xx_spi_init,
- .send_start = bsp_spi_send_start_dummy,
- .send_stop = bsp_spi_send_stop,
- .send_addr = bsp_spi_sel_addr,
- .read_bytes = mpc83xx_spi_read_bytes,
- .write_bytes = mpc83xx_spi_write_bytes,
- .ioctl = mpc83xx_spi_ioctl
-};
-
-static mpc83xx_spi_desc_t bsp_spi_bus_desc = {
- {/* public fields */
- .ops = &bsp_spi_ops,
- .size = sizeof(bsp_spi_bus_desc)
- },
- { /* our private fields */
- .reg_ptr =&mpc83xx.spi,
- .initialized = FALSE,
- .irq_number = BSP_IPIC_IRQ_SPI,
- .base_frq = 0 /* filled in during init */
- }
-};
-
-#ifdef MPC83XX_BOARD_MPC8313ERDB
-
-#include <libchip/spi-sd-card.h>
-
-#define SD_CARD_NUMBER 1
-
-size_t sd_card_driver_table_size = SD_CARD_NUMBER;
-
-sd_card_driver_entry sd_card_driver_table [SD_CARD_NUMBER] = {
- {
- .device_name = "/dev/sd-card-a",
- .bus = 0,
- .transfer_mode = SD_CARD_TRANSFER_MODE_DEFAULT,
- .command = SD_CARD_COMMAND_DEFAULT,
- /* .response = whatever, */
- .response_index = SD_CARD_COMMAND_SIZE,
- .n_ac_max = SD_CARD_N_AC_MAX_DEFAULT,
- .block_number = 0,
- .block_size = 0,
- .block_size_shift = 0,
- .busy = true,
- .verbose = true,
- .schedule_if_busy = false
- }
-};
-
-#endif /* MPC83XX_BOARD_MPC8313ERDB */
-
-
-/*=========================================================================*\
-| initialization |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-rtems_status_code bsp_register_spi
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| register SPI bus and devices |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- void /* <none> */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| 0 or error code |
-\*=========================================================================*/
-{
- #if defined(MPC83XX_BOARD_MPC8313ERDB)
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- #endif
- unsigned spi_busno;
- int ret_code;
-
- /*
- * init I2C library (if not already done)
- */
- rtems_libi2c_initialize ();
-
- /*
- * init port pins used to address/select SPI devices
- */
-
-#if defined(MPC83XX_BOARD_MPC8313ERDB)
-
- /*
- * Configured as master (direct connection to SD card)
- *
- * GPIO[28] : SOUT
- * GPIO[29] : SIN
- * GPIO[30] : SCLK
- * GPIO[02] : SCS (inactive high), GPIO[02] is normally connected to U43 at
- * pin 15 of MC74LCX244DT.
- */
-
- /* Function */
- mpc83xx.syscon.sicrl = (mpc83xx.syscon.sicrl & ~0x03fc0000) | 0x30000000;
-
- /* Direction */
- mpc83xx.gpio [0].gpdir = (mpc83xx.gpio [0].gpdir & ~0x0000000f) | 0x2000000b;
-
- /* Data */
- mpc83xx.gpio [0].gpdat |= 0x20000000;
-
- /* Open Drain */
- /* mpc83xx.gpio [0].gpdr |= 0x0000000f; */
-
-#elif defined(MPC83XX_BOARD_MPC8349EAMDS)
-
- /*
- * GPIO1[0] is nSEL_SPI for M25P40
- * set it to be output, high
- */
- mpc83xx.gpio[0].gpdat |= (1 << (31- 0));
- mpc83xx.gpio[0].gpdir |= (1 << (31- 0));
- mpc83xx.gpio[0].gpdr &= ~(1 << (31- 0));
-
-#elif defined(MPC83XX_BOARD_HSC_CM01)
-
- /*
- * GPIO1[24] is SPI_A0
- * GPIO1[25] is SPI_A1
- * GPIO1[26] is SPI_A2
- * GPIO1[27] is high-active strobe
- * set pins to be output, low
- */
- mpc83xx.gpio[0].gpdat &= ~(0xf << (31-27));
- mpc83xx.gpio[0].gpdir |= (0xf << (31-27));
- mpc83xx.gpio[0].gpdr &= ~(0xf << (31-27));
-
-#else
-
- /*
- * There is no SPI configuration information for this variant.
- */
- (void) spi_busno; /* avoid set but not used warning */
-#endif
-
- /*
- * update base frequency in spi descriptor
- */
- bsp_spi_bus_desc.softc.base_frq = BSP_bus_frequency;
-
- /*
- * register SPI bus
- */
- ret_code = rtems_libi2c_register_bus("/dev/spi",
- &(bsp_spi_bus_desc.bus_desc));
- if (ret_code < 0) {
- return -ret_code;
- }
- spi_busno = (unsigned) ret_code;
-
-#if defined(MPC83XX_BOARD_MPC8313ERDB)
-
- /* Register SD Card driver */
- sd_card_driver_table [0].bus = spi_busno;
- sc = sd_card_register();
- if (sc != RTEMS_SUCCESSFUL) {
- return sc;
- }
-
-#elif defined(MPC83XX_BOARD_MPC8349EAMDS)
-
- /*
- * register M25P40 Flash
- */
- ret_code = rtems_libi2c_register_drv(RTEMS_BSP_SPI_FLASH_DEVICE_NAME,
- spi_flash_m25p40_rw_driver_descriptor,
- spi_busno,0x00);
-#elif defined(MPC83XX_BOARD_HSC_CM01)
-
- /*
- * register FM25L256 FRAM
- */
- ret_code = rtems_libi2c_register_drv(RTEMS_BSP_SPI_FRAM_DEVICE_NAME,
- spi_fram_fm25l256_rw_driver_descriptor,
- spi_busno,0x02);
-
-#endif
-
- if (ret_code < 0) {
- return -ret_code;
- }
-
- /*
- * FIXME: further drivers, when available
- */
- return 0;
-}
diff --git a/c/src/lib/libbsp/powerpc/tqm8xx/Makefile.am b/c/src/lib/libbsp/powerpc/tqm8xx/Makefile.am
index bc7e02426b..3775b32268 100644
--- a/c/src/lib/libbsp/powerpc/tqm8xx/Makefile.am
+++ b/c/src/lib/libbsp/powerpc/tqm8xx/Makefile.am
@@ -34,7 +34,7 @@ librtemsbsp_a_SOURCES +=../../../../../../bsps/powerpc/tqm8xx/clock/p_clock.c
# console
librtemsbsp_a_SOURCES += ../../../../../../bsps/powerpc/tqm8xx/console/console.c
# spi
-librtemsbsp_a_SOURCES += spi/spi.c
+librtemsbsp_a_SOURCES += ../../../../../../bsps/powerpc/tqm8xx/spi/spi.c
# timer
librtemsbsp_a_SOURCES += ../../../../../../bsps/powerpc/tqm8xx/btimer/btimer.c
# startup
diff --git a/c/src/lib/libbsp/powerpc/tqm8xx/spi/spi.c b/c/src/lib/libbsp/powerpc/tqm8xx/spi/spi.c
deleted file mode 100644
index 0b82242898..0000000000
--- a/c/src/lib/libbsp/powerpc/tqm8xx/spi/spi.c
+++ /dev/null
@@ -1,873 +0,0 @@
-/*===============================================================*\
-| Project: RTEMS support for tqm8xx |
-+-----------------------------------------------------------------+
-| Copyright (c) 2009 |
-| Embedded Brains GmbH |
-| Obere Lagerstr. 30 |
-| D-82178 Puchheim |
-| Germany |
-| rtems@embedded-brains.de |
-+-----------------------------------------------------------------+
-| The license and distribution terms for this file may be |
-| found in the file LICENSE in this distribution or at |
-| |
-| http://www.rtems.org/license/LICENSE. |
-| |
-+-----------------------------------------------------------------+
-| this file contains the MPC8xx SPI driver |
-\*===============================================================*/
-#include <stdlib.h>
-#include <bsp.h>
-#include <mpc8xx.h>
-#include <bsp/spi.h>
-#include <libchip/disp_hcms29xx.h>
-#include <rtems/error.h>
-#include <rtems/bspIo.h>
-#include <errno.h>
-#include <rtems/libi2c.h>
-#include <bsp/irq.h>
-
-#define M8xx_PB_SPI_MISO_MSK (1<<(31-28))
-#define M8xx_PB_SPI_MOSI_MSK (1<<(31-29))
-#define M8xx_PB_SPI_CLK_MSK (1<<(31-30))
-
-#undef DEBUG
-
-/*
- * this is a dummy receive buffer for sequences,
- * where only send data are available
- */
-uint8_t m8xx_spi_dummy_rxbuf[2];
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code m8xx_spi_baud_to_mode
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| determine proper divider value |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- uint32_t baudrate, /* desired baudrate */
- uint32_t *spimode /* result value */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- uint32_t divider;
- uint16_t tmpmode = 0;
- /*
- * determine clock divider and DIV16 bit
- */
- divider = BSP_bus_frequency/baudrate;
- if (divider > 64) {
- tmpmode = M8xx_SPMODE_DIV16;
- divider /= 16;
- }
- if ((divider < 1) ||
- (divider > 64)) {
- return RTEMS_INVALID_NUMBER;
- }
- else {
- tmpmode |= M8xx_SPMODE_PM(divider/4-1);
- }
- *spimode = tmpmode;
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code m8xx_spi_char_mode
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| determine proper value for character size |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- m8xx_spi_softc_t *softc_ptr, /* handle */
- uint32_t bits_per_char, /* bits per character */
- bool lsb_first, /* TRUE: send LSB first */
- uint16_t *spimode /* result value */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- uint16_t tmpmode;
-
- /*
- * calculate data format
- */
- if ((bits_per_char >= 4) &&
- (bits_per_char <= 16)) {
- tmpmode = M8xx_SPMODE_CLEN( bits_per_char-1);
- }
- else {
- return RTEMS_INVALID_NUMBER;
- }
-
- *spimode = tmpmode;
- return 0;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static int m8xx_spi_wait
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| wait for spi to become idle |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- m8xx_spi_softc_t *softc_ptr /* handle */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- uint16_t act_status;
- rtems_status_code rc;
- uint32_t tout;
-
-#if defined(DEBUG)
- printk("m8xx_spi_wait called... ");
-#endif
- if (softc_ptr->initialized) {
- /*
- * allow interrupts, when receiver is not empty
- */
- m8xx.spim = (M8xx_SPIE_TXE | M8xx_SPIE_TXB |
- M8xx_SPIE_BSY | M8xx_SPIE_MME);
-
- rc = rtems_semaphore_obtain(softc_ptr->irq_sema_id,
- RTEMS_WAIT,
- RTEMS_NO_TIMEOUT);
- if (rc != RTEMS_SUCCESSFUL) {
- return rc;
- }
- }
- else {
- tout = 0;
- do {
- if (tout++ > 1000000) {
-#if defined(DEBUG)
- printk("... exit with RTEMS_TIMEOUT\r\n");
-#endif
- return RTEMS_TIMEOUT;
- }
- /*
- * wait for SPI to terminate
- */
- } while (!(m8xx.spie & M8xx_SPIE_TXB));
- }
-
- act_status = m8xx.spie;
- if ((act_status & (M8xx_SPIE_TXE | M8xx_SPIE_TXB |
- M8xx_SPIE_BSY | M8xx_SPIE_MME))!= M8xx_SPIE_TXB) {
-#if defined(DEBUG)
- printk("... exit with RTEMS_IO_ERROR,"
- "act_status=0x%04x,mask=0x%04x,desired_status=0x%04x\r\n",
- act_status,status_mask,desired_status);
-#endif
- return RTEMS_IO_ERROR;
- }
-#if defined(DEBUG)
- printk("... exit OK\r\n");
-#endif
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_isr m8xx_spi_irq_handler
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| handle interrupts |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- void *arg
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| <none> |
-\*=========================================================================*/
-{
- m8xx_spi_softc_t *softc_ptr = arg;
-
- /*
- * disable interrupt mask
- */
- m8xx.spim = 0;
- if (softc_ptr->initialized) {
- rtems_semaphore_release(softc_ptr->irq_sema_id);
- }
-}
-
-static void
-mpc8xx_spi_irq_on(const rtems_irq_connect_data *irq)
-{
-}
-
-static void
-mpc8xx_spi_irq_off(const rtems_irq_connect_data *irq)
-{
-}
-
-static int
-mpc8xx_spi_irq_isOn(const rtems_irq_connect_data *irq)
-{
- return 1;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static void m8xx_spi_install_irq_handler
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| install the interrupt handler |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- m8xx_spi_softc_t *softc_ptr, /* ptr to control structure */
- int install /* TRUE: install, FALSE: remove */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| <none> |
-\*=========================================================================*/
-{
- rtems_status_code rc = RTEMS_SUCCESSFUL;
-
- /*
- * install handler for SPI device
- */
- /*
- * create semaphore for IRQ synchronization
- */
- rc = rtems_semaphore_create(rtems_build_name('s','p','i','s'),
- 0,
- RTEMS_FIFO
- | RTEMS_SIMPLE_BINARY_SEMAPHORE,
- 0,
- &softc_ptr->irq_sema_id);
- if (rc != RTEMS_SUCCESSFUL) {
- rtems_panic("SPI: cannot create semaphore");
- }
- if (rc == RTEMS_SUCCESSFUL) {
- rtems_irq_connect_data irq_conn_data = {
- BSP_CPM_IRQ_SPI,
- m8xx_spi_irq_handler, /* rtems_irq_hdl */
- (rtems_irq_hdl_param)softc_ptr, /* (rtems_irq_hdl_param) */
- mpc8xx_spi_irq_on, /* (rtems_irq_enable) */
- mpc8xx_spi_irq_off, /* (rtems_irq_disable) */
- mpc8xx_spi_irq_isOn /* (rtems_irq_is_enabled) */
- };
- if (!BSP_install_rtems_irq_handler (&irq_conn_data)) {
- rtems_panic("SPI: cannot install IRQ handler");
- }
- }
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-rtems_status_code m8xx_spi_init
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| initialize the driver |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh /* bus specifier structure */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- m8xx_spi_softc_t *softc_ptr = &(((m8xx_spi_desc_t *)(bh))->softc);
- rtems_status_code rc = RTEMS_SUCCESSFUL;
-
-#if defined(DEBUG)
- printk("m8xx_spi_init called... ");
-#endif
- /*
- * init HW registers:
- */
- /*
- * FIXME: set default mode in SPMODE
- */
-
- /*
- * allocate BDs (1x RX, 1x TX)
- */
- if (rc == RTEMS_SUCCESSFUL) {
- softc_ptr->rx_bd = m8xx_bd_allocate (1);
- softc_ptr->tx_bd = m8xx_bd_allocate (1);
- if ((softc_ptr->rx_bd == NULL) ||
- (softc_ptr->tx_bd == NULL)) {
- rc = RTEMS_NO_MEMORY;
- }
- }
- /*
- * set parameter RAM
- */
- m8xx.spip.rbase = (char *)softc_ptr->rx_bd - (char *)&m8xx;
- m8xx.spip.tbase = (char *)softc_ptr->tx_bd - (char *)&m8xx;
- m8xx.spip.rfcr = M8xx_RFCR_MOT | M8xx_RFCR_DMA_SPACE(0);
- m8xx.spip.tfcr = M8xx_RFCR_MOT | M8xx_RFCR_DMA_SPACE(0);
- m8xx.spip.mrblr = 2;
-
- /*
- * issue "InitRxTx" Command to CP
- */
- m8xx_cp_execute_cmd (M8xx_CR_OP_INIT_RX_TX | M8xx_CR_CHAN_SPI);
-
- /*
- * init interrupt stuff
- */
- if (rc == RTEMS_SUCCESSFUL) {
- m8xx_spi_install_irq_handler(softc_ptr,TRUE);
- }
- if (rc == RTEMS_SUCCESSFUL) {
- /*
- * set up ports
- * LINE PAR DIR DAT
- * -----------------------
- * MOSI 1 1 x
- * MISO 1 1 x
- * CLK 1 1 x
- */
-
- /* set Port B Pin Assignment Register... */
- m8xx.pbpar =
- m8xx.pbpar
- | M8xx_PB_SPI_MISO_MSK
- | M8xx_PB_SPI_MOSI_MSK
- | M8xx_PB_SPI_CLK_MSK;
-
- /* set Port B Data Direction Register... */
- m8xx.pbdir =
- m8xx.pbdir
- | M8xx_PB_SPI_MISO_MSK
- | M8xx_PB_SPI_MOSI_MSK
- | M8xx_PB_SPI_CLK_MSK;
- }
- /*
- * mark, that we have initialized
- */
- if (rc == RTEMS_SUCCESSFUL) {
- softc_ptr->initialized = TRUE;
- }
-#if defined(DEBUG)
- printk("... exit OK\r\n");
-#endif
- return rc;
-}
-
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static int m8xx_spi_read_write_bytes
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| transmit/receive some bytes from SPI device |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- unsigned char *rbuf, /* buffer to store bytes */
- const unsigned char *tbuf, /* buffer to send bytes */
- int len /* number of bytes to transceive */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| number of bytes received or (negative) error code |
-\*=========================================================================*/
-{
- m8xx_spi_softc_t *softc_ptr = &(((m8xx_spi_desc_t *)(bh))->softc);
- rtems_status_code rc = RTEMS_SUCCESSFUL;
- int bc = 0;
-
-#if defined(DEBUG)
- printk("m8xx_spi_read_write_bytes called... ");
-#endif
-
- /*
- * prepare RxBD
- */
- if (rc == RTEMS_SUCCESSFUL) {
- if (rbuf == NULL) {
- /*
- * no Tx buffer: receive to dummy buffer
- */
- m8xx.spip.mrblr = sizeof(m8xx_spi_dummy_rxbuf);
- softc_ptr->rx_bd->buffer = m8xx_spi_dummy_rxbuf;
- softc_ptr->rx_bd->length = 0;
- softc_ptr->rx_bd->status = (M8xx_BD_EMPTY | M8xx_BD_WRAP |
- M8xx_BD_CONTINUOUS);
- }
- else {
- m8xx.spip.mrblr = len;
- softc_ptr->rx_bd->buffer = rbuf;
- softc_ptr->rx_bd->length = 0;
- softc_ptr->rx_bd->status = (M8xx_BD_EMPTY | M8xx_BD_WRAP);
- }
- }
- /*
- * prepare TxBD
- */
- if (rc == RTEMS_SUCCESSFUL) {
- if (tbuf == NULL) {
- /*
- * no Tx buffer: transmit from dummy buffer
- */
- softc_ptr->tx_bd->buffer = m8xx_spi_dummy_rxbuf;
- softc_ptr->tx_bd->length = len;
- softc_ptr->tx_bd->status = (M8xx_BD_READY | M8xx_BD_WRAP |
- M8xx_BD_CONTINUOUS);
- }
- else {
- softc_ptr->tx_bd->buffer = (char *)tbuf;
- softc_ptr->tx_bd->length = len;
- softc_ptr->tx_bd->status = (M8xx_BD_READY | M8xx_BD_WRAP);
- }
- }
-
- if (rc == RTEMS_SUCCESSFUL) {
- /*
- * set START command
- */
- m8xx.spcom = M8xx_SPCOM_STR;
- /*
- * wait for SPI to finish
- */
- rc = m8xx_spi_wait(softc_ptr);
- }
-#if defined(DEBUG)
- printk("... exit OK, rc=%d\r\n",bc);
-#endif
- return (rc == RTEMS_SUCCESSFUL) ? bc : -rc;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-int m8xx_spi_read_bytes
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| receive some bytes from SPI device |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- unsigned char *buf, /* buffer to store bytes */
- int len /* number of bytes to receive */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| number of bytes received or (negative) error code |
-\*=========================================================================*/
-{
- return m8xx_spi_read_write_bytes(bh,buf,NULL,len);
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-int m8xx_spi_write_bytes
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| send some bytes to SPI device |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- unsigned char *buf, /* buffer to send */
- int len /* number of bytes to send */
-
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| number of bytes sent or (negative) error code |
-\*=========================================================================*/
-{
- return m8xx_spi_read_write_bytes(bh,NULL,buf,len);
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-rtems_status_code m8xx_spi_set_tfr_mode
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| set SPI to desired baudrate/clock mode/character mode |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- const rtems_libi2c_tfr_mode_t *tfr_mode /* transfer mode info */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| rtems_status_code |
-\*=========================================================================*/
-{
- m8xx_spi_softc_t *softc_ptr = &(((m8xx_spi_desc_t *)(bh))->softc);
- uint32_t spimode_baud;
- uint16_t spimode;
- rtems_status_code rc = RTEMS_SUCCESSFUL;
- /*
- * FIXME: set proper mode
- */
- if (rc == RTEMS_SUCCESSFUL) {
- rc = m8xx_spi_baud_to_mode(tfr_mode->baudrate,&spimode_baud);
- }
- if (rc == RTEMS_SUCCESSFUL) {
- rc = m8xx_spi_char_mode(softc_ptr,
- tfr_mode->bits_per_char,
- tfr_mode->lsb_first,
- &spimode);
- }
- if (rc == RTEMS_SUCCESSFUL) {
- spimode |= spimode_baud;
- spimode |= M8xx_SPMODE_MASTER; /* set master mode */
- if (!tfr_mode->lsb_first) {
- spimode |= M8xx_SPMODE_REV;
- }
- if (tfr_mode->clock_inv) {
- spimode |= M8xx_SPMODE_CI;
- }
- if (tfr_mode->clock_phs) {
- spimode |= M8xx_SPMODE_CP;
- }
- }
-
- if (rc == RTEMS_SUCCESSFUL) {
- /*
- * disable SPI
- */
- m8xx.spmode &= ~M8xx_SPMODE_EN;
- /*
- * set new mode and reenable SPI
- */
- m8xx.spmode = spimode | M8xx_SPMODE_EN;
- }
- return rc;
-}
-
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-int m8xx_spi_ioctl
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| perform selected ioctl function for SPI |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- int cmd, /* ioctl command code */
- void *arg /* additional argument array */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| rtems_status_code |
-\*=========================================================================*/
-{
- int ret_val = -1;
-
- switch(cmd) {
- case RTEMS_LIBI2C_IOCTL_SET_TFRMODE:
- ret_val =
- -m8xx_spi_set_tfr_mode(bh,
- (const rtems_libi2c_tfr_mode_t *)arg);
- break;
- case RTEMS_LIBI2C_IOCTL_READ_WRITE:
- ret_val =
- m8xx_spi_read_write_bytes(bh,
- ((rtems_libi2c_read_write_t *)arg)->rd_buf,
- ((rtems_libi2c_read_write_t *)arg)->wr_buf,
- ((rtems_libi2c_read_write_t *)arg)->byte_cnt);
- break;
- default:
- ret_val = -RTEMS_NOT_DEFINED;
- break;
- }
- return ret_val;
-}
-
-/*=========================================================================*\
-| Board-specific adaptation functions |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_send_start
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| dummy function, SPI has no start condition |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh /* bus specifier structure */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_sel_addr
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| address a slave device on the bus |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh, /* bus specifier structure */
- uint32_t addr, /* address to send on bus */
- int rw /* 0=write,1=read */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| rtems_status_code |
-\*=========================================================================*/
-{
-#if defined(PGHPLUS)
- pbdat_val = m8xx.pbdat | (PGHPLUS_SPI_PB_DISP4_RS_MSK |
- PGHPLUS_SPI_PB_DISP4_CE_MSK |
- PGHPLUS_SPI_PB_EEP_CE_MSK);
- /*
- * select given device
- */
- switch(addr) {
- case PGHPLUS_SPI_ADDR_EEPROM:
- pbdat_val &= ~PGHPLUS_SPI_PB_EEP_CE_MSK;
- break;
- case PGHPLUS_SPI_ADDR_DISP4_DATA:
- pbdat_val = (m8xx.pbdat
- & ~(PGHPLUS_PB_SPI_DISP4_CE_MSK |
- PGHPLUS_PB_SPI_DISP4_RS_MSK));
- break;
- case PGHPLUS_SPI_ADDR_DISP4_CTRL:
- pbdat_val = (m8xx.pbdat
- & ~(PGHPLUS_PB_SPI_DISP4_CE_MSK)
- | PGHPLUS_PB_SPI_DISP4_RS_MSK);
- break;
- default:
- return RTEMS_INVALID_NUMBER;
- }
- m8xx_pbdat = pbdat_val
-#endif /* PGHPLUS */
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_send_stop
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| deselect SPI |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- rtems_libi2c_bus_t *bh /* bus specifier structure */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
-#if defined(DEBUG)
- printk("bsp_spi_send_stop called... ");
-#endif
- m8xx.pbdat = (m8xx.pbdat
- | PGHPLUS_PB_SPI_DISP4_CE_MSK
- | PGHPLUS_PB_SPI_EEP_CE_MSK);
-#if defined(DEBUG)
- printk("... exit OK\r\n");
-#endif
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-static rtems_status_code bsp_spi_init
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| do board specific init: |
-| - initialize pins for addressing |
-| - register further drivers |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- int spi_busno
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| o = ok or error code |
-\*=========================================================================*/
-{
- int ret_code;
-
-#if defined(DEBUG)
- printk("bsp_spi_init called... ");
-#endif
-
- /*
- * init port pins used to address/select SPI devices
- */
-
- /*
- * set up ports
- * LINE PAR DIR DAT
- * -----------------------
- * EEP_CE 0 1 act-high
- * DISP4_CS 0 1 act-high
- * DISP4_RS 0 1 active
- */
-
- /* set Port B Pin Assignment Register... */
- m8xx.pbpar =
- (m8xx.pbpar
- & ~(PGHPLUS_PB_SPI_EEP_CE_MSK
- | PGHPLUS_PB_SPI_DISP4_CE_MSK
- | PGHPLUS_PB_SPI_DISP4_RS_MSK));
-
- /* set Port B Data Direction Register... */
- m8xx.pbdir =
- m8xx.pbdir
- | PGHPLUS_PB_SPI_EEP_CE_MSK
- | PGHPLUS_PB_SPI_DISP4_CE_MSK
- | PGHPLUS_PB_SPI_DISP4_RS_MSK;
-
- /* set Port B Data Register to inactive CE state */
- m8xx.pbdat =
- m8xx.pbdat
- | PGHPLUS_PB_SPI_DISP4_CE_MSK
- | PGHPLUS_PB_SPI_DISP4_RS_MSK;
-
- /*
- * register devices
- */
- ret_code = rtems_libi2c_register_drv("disp",
- disp_hcms29xx_driver_descriptor,
- spi_busno,PGHPLUS_SPI_ADDR_DISP4);
- if (ret_code < 0) {
- return -ret_code;
- }
-
-#if defined(DEBUG)
- printk("... exit OK\r\n");
-#endif
- return RTEMS_SUCCESSFUL;
-}
-
-/*=========================================================================*\
-| list of handlers |
-\*=========================================================================*/
-
-rtems_libi2c_bus_ops_t bsp_spi_ops = {
- init: m8xx_spi_init,
- send_start: bsp_spi_send_start,
- send_stop: bsp_spi_send_stop,
- send_addr: bsp_spi_sel_addr,
- read_bytes: m8xx_spi_read_bytes,
- write_bytes: m8xx_spi_write_bytes,
- ioctl: m8xx_spi_ioctl
-};
-
-static m8xx_spi_desc_t bsp_spi_bus_desc = {
- {/* public fields */
- ops: &bsp_spi_ops,
- size: sizeof(bsp_spi_bus_desc)
- },
- { /* our private fields */
- initialized: FALSE
- }
-};
-
-/*=========================================================================*\
-| initialization |
-\*=========================================================================*/
-
-/*=========================================================================*\
-| Function: |
-\*-------------------------------------------------------------------------*/
-rtems_status_code bsp_register_spi
-(
-/*-------------------------------------------------------------------------*\
-| Purpose: |
-| register SPI bus and devices |
-+---------------------------------------------------------------------------+
-| Input Parameters: |
-\*-------------------------------------------------------------------------*/
- void /* <none> */
-)
-/*-------------------------------------------------------------------------*\
-| Return Value: |
-| 0 or error code |
-\*=========================================================================*/
-{
- int ret_code;
- int spi_busno;
-
- /*
- * init I2C library (if not already done)
- */
- rtems_libi2c_initialize ();
-
-
- /*
- * register SPI bus
- */
- ret_code = rtems_libi2c_register_bus("/dev/spi",
- &(bsp_spi_bus_desc.bus_desc));
- if (ret_code < 0) {
- return -ret_code;
- }
- spi_busno = ret_code;
-
- bsp_spi_init(spi_busno);
- /*
- * FIXME: further drivers, when available
- */
- return RTEMS_SUCCESSFUL;
-}
-
-