bsps: Move I2C drivers to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

2 files changed, 1 insertions, 252 deletions

diff --git a/c/src/lib/libbsp/arm/lpc32xx/Makefile.am b/c/src/lib/libbsp/arm/lpc32xx/Makefile.am
index 3ac8205474..f11cd6ac48 100644
--- a/c/src/lib/libbsp/arm/lpc32xx/Makefile.am
+++ b/c/src/lib/libbsp/arm/lpc32xx/Makefile.am
@@ -74,7 +74,7 @@ librtemsbsp_a_SOURCES += rtc/rtc-config.c
 # Misc
 librtemsbsp_a_SOURCES += misc/boot.c
 librtemsbsp_a_SOURCES += misc/emc.c
-librtemsbsp_a_SOURCES += misc/i2c.c
+librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/lpc32xx/i2c/i2c.c
 librtemsbsp_a_SOURCES += misc/nand-mlc.c
 librtemsbsp_a_SOURCES += misc/nand-mlc-erase-block-safe.c
 librtemsbsp_a_SOURCES += misc/nand-mlc-read-blocks.c
diff --git a/c/src/lib/libbsp/arm/lpc32xx/misc/i2c.c b/c/src/lib/libbsp/arm/lpc32xx/misc/i2c.c
deleted file mode 100644
index 508cd6458a..0000000000
--- a/c/src/lib/libbsp/arm/lpc32xx/misc/i2c.c
+++ /dev/null
@@ -1,251 +0,0 @@
-/**
- * @file
- *
- * @ingroup lpc32xx_i2c
- *
- * @brief I2C support implementation.
- */
-
-/*
- * Copyright (c) 2010-2011 embedded brains GmbH.  All rights reserved.
- *
- *  embedded brains GmbH
- *  Obere Lagerstr. 30
- *  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 <rtems.h>
-
-#include <bsp.h>
-#include <bsp/i2c.h>
-
-void lpc32xx_i2c_reset(volatile lpc32xx_i2c *i2c)
-{
-  i2c->ctrl = I2C_CTRL_RESET;
-}
-
-rtems_status_code lpc32xx_i2c_init(
-  volatile lpc32xx_i2c *i2c,
-  unsigned clock_in_hz
-)
-{
-  uint32_t i2cclk = 0;
-
-  if (i2c == &lpc32xx.i2c_1) {
-    i2cclk |= I2CCLK_1_EN | I2CCLK_1_HIGH_DRIVE;
-  } else if (i2c == &lpc32xx.i2c_2) {
-    i2cclk |= I2CCLK_2_EN | I2CCLK_2_HIGH_DRIVE;
-  } else {
-    return RTEMS_INVALID_ID;
-  }
-
-  LPC32XX_I2CCLK_CTRL |= i2cclk;
-
-  lpc32xx_i2c_reset(i2c);
-
-  return lpc32xx_i2c_clock(i2c, clock_in_hz);
-}
-
-rtems_status_code lpc32xx_i2c_clock(
-  volatile lpc32xx_i2c *i2c,
-  unsigned clock_in_hz
-)
-{
-  uint32_t clk_div = lpc32xx_hclk() / clock_in_hz;
-  uint32_t clk_lo = 0;
-  uint32_t clk_hi = 0;
-
-  switch (clock_in_hz) {
-    case 100000:
-      clk_lo = clk_div / 2;
-      break;
-    case 400000:
-      clk_lo = (64 * clk_div) / 100;
-      break;
-    default:
-      return RTEMS_INVALID_CLOCK;
-  }
-
-  clk_hi = clk_div - clk_lo;
-
-  i2c->clk_lo = clk_lo;
-  i2c->clk_hi = clk_hi;
-
-  return RTEMS_SUCCESSFUL;
-}
-
-static rtems_status_code wait_for_transaction_done(volatile lpc32xx_i2c *i2c)
-{
-  uint32_t stat = 0;
-
-  do {
-    stat = i2c->stat;
-  } while ((stat & I2C_STAT_TDI) == 0);
-
-  if ((stat & I2C_STAT_TFE) != 0) {
-    i2c->stat = I2C_STAT_TDI;
-
-    return RTEMS_SUCCESSFUL;
-  } else {
-    lpc32xx_i2c_reset(i2c);
-
-    return RTEMS_IO_ERROR;
-  }
-}
-
-static rtems_status_code tx(volatile lpc32xx_i2c *i2c, uint32_t data)
-{
-  uint32_t stat = 0;
-
-  do {
-    stat = i2c->stat;
-  } while ((stat & (I2C_STAT_TFE | I2C_STAT_TDI)) == 0);
-
-  if ((stat & I2C_STAT_TDI) == 0) {
-    i2c->rx_or_tx = data;
-
-    return RTEMS_SUCCESSFUL;
-  } else {
-    lpc32xx_i2c_reset(i2c);
-
-    return RTEMS_IO_ERROR;
-  }
-}
-
-rtems_status_code lpc32xx_i2c_write_start(
-  volatile lpc32xx_i2c *i2c,
-  unsigned addr
-)
-{
-  return tx(i2c, I2C_TX_ADDR(addr) | I2C_TX_START);
-}
-
-rtems_status_code lpc32xx_i2c_read_start(
-  volatile lpc32xx_i2c *i2c,
-  unsigned addr
-)
-{
-  return tx(i2c, I2C_TX_ADDR(addr) | I2C_TX_START | I2C_TX_READ);
-}
-
-rtems_status_code lpc32xx_i2c_write_with_optional_stop(
-  volatile lpc32xx_i2c *i2c,
-  const uint8_t *out,
-  size_t n,
-  bool stop
-)
-{
-  rtems_status_code sc = RTEMS_SUCCESSFUL;
-  size_t i = 0;
-
-  for (i = 0; i < n - 1 && sc == RTEMS_SUCCESSFUL; ++i) {
-    sc = tx(i2c, out [i]);
-  }
-
-  if (sc == RTEMS_SUCCESSFUL) {
-    uint32_t stop_flag = stop ? I2C_TX_STOP : 0;
-
-    sc = tx(i2c, out [n - 1] | stop_flag);
-  }
-
-  if (stop && sc == RTEMS_SUCCESSFUL) {
-    sc = wait_for_transaction_done(i2c);
-  }
-
-  return sc;
-}
-
-static bool can_tx_for_rx(volatile lpc32xx_i2c *i2c)
-{
-  return (i2c->stat & (I2C_STAT_TFF | I2C_STAT_RFF)) == 0;
-}
-
-static bool can_rx(volatile lpc32xx_i2c *i2c)
-{
-  return (i2c->stat & I2C_STAT_RFE) == 0;
-}
-
-rtems_status_code lpc32xx_i2c_read_with_optional_stop(
-  volatile lpc32xx_i2c *i2c,
-  uint8_t *in,
-  size_t n,
-  bool stop
-)
-{
-  rtems_status_code sc = RTEMS_SUCCESSFUL;
-  size_t last = n - 1;
-  size_t rx = 0;
-  size_t tx = 0;
-
-  if (!stop) {
-    return RTEMS_NOT_IMPLEMENTED;
-  }
-
-  while (rx <= last) {
-    while (tx < last && can_tx_for_rx(i2c)) {
-      i2c->rx_or_tx = 0;
-      ++tx;
-    }
-
-    if (tx == last && can_tx_for_rx(i2c)) {
-      uint32_t stop_flag = stop ? I2C_TX_STOP : 0;
-
-      i2c->rx_or_tx = stop_flag;
-      ++tx;
-    }
-
-    while (rx <= last && can_rx(i2c)) {
-      in [rx] = (uint8_t) i2c->rx_or_tx;
-      ++rx;
-    }
-  }
-
-  if (stop) {
-    sc = wait_for_transaction_done(i2c);
-  }
-
-  return sc;
-}
-
-rtems_status_code lpc32xx_i2c_write_and_read(
-  volatile lpc32xx_i2c *i2c,
-  unsigned addr,
-  const uint8_t *out,
-  size_t out_size,
-  uint8_t *in,
-  size_t in_size
-)
-{
-  rtems_status_code sc = RTEMS_SUCCESSFUL;
-
-  if (out_size > 0) {
-    bool stop = in_size == 0;
-
-    sc = lpc32xx_i2c_write_start(i2c, addr);
-    if (sc != RTEMS_SUCCESSFUL) {
-      return sc;
-    }
-
-    sc = lpc32xx_i2c_write_with_optional_stop(i2c, out, out_size, stop);
-    if (sc != RTEMS_SUCCESSFUL) {
-      return sc;
-    }
-  }
-
-  if (in_size > 0) {
-    sc = lpc32xx_i2c_read_start(i2c, addr);
-    if (sc != RTEMS_SUCCESSFUL) {
-      return sc;
-    }
-
-    lpc32xx_i2c_read_with_optional_stop(i2c, in, in_size, true);
-  }
-
-  return RTEMS_SUCCESSFUL;
-}