diff options
| author | Sichen Zhao <1473996754@qq.com> | 2017-06-15 19:35:20 +0800 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2017-06-15 15:01:31 -0500 |
| commit | 369372c3eeb9c8f83a56f54914fc87fd4339edf9 (patch) | |
| tree | 3f6804a0332afb24e80da05d37a7f3ee46d74f29 | |
| parent | Add the i2c driver for Beaglebone Black (diff) | |
| download | rtems-369372c3eeb9c8f83a56f54914fc87fd4339edf9.tar.bz2 | |
Fix beagle i2c file bbb-i2c.c comment issues
| -rw-r--r-- | c/src/lib/libbsp/arm/beagle/i2c/bbb-i2c.c | 42 |
1 files changed, 23 insertions, 19 deletions
diff --git a/c/src/lib/libbsp/arm/beagle/i2c/bbb-i2c.c b/c/src/lib/libbsp/arm/beagle/i2c/bbb-i2c.c index 3d7d820511..26bae528dc 100644 --- a/c/src/lib/libbsp/arm/beagle/i2c/bbb-i2c.c +++ b/c/src/lib/libbsp/arm/beagle/i2c/bbb-i2c.c @@ -7,6 +7,7 @@ */ /* + * Copyright (c) 2016 Punit Vara <punitvara@gmail.com> * Copyright (c) 2017 Sichen Zhao <zsc19940506@gmail.com> * * The license and distribution terms for this file may be @@ -48,27 +49,26 @@ static void I2C0ModuleClkConfig( void ) AM335X_CM_WKUP_I2C0_CLKCTRL_MODULEMODE ) ) ; /* - ** Waiting for IDLEST field in AM335X_CM_WKUP_CONTROL_CLKCTRL - ** register to attain - ** desired value. - */ + * Waiting for IDLEST field in AM335X_CM_WKUP_CONTROL_CLKCTRL + * register to attain desired value. + */ while ( ( AM335X_CM_WKUP_CONTROL_CLKCTRL_IDLEST_FUNC << AM335X_CM_WKUP_CONTROL_CLKCTRL_IDLEST_SHIFT ) != ( REG( AM335X_SOC_CM_WKUP_REGS + AM335X_CM_WKUP_CONTROL_CLKCTRL ) & AM335X_CM_WKUP_CONTROL_CLKCTRL_IDLEST ) ) ; /* - ** Waiting for CLKACTIVITY_I2C0_GFCLK field in AM335X_CM_WKUP_CLKSTCTRL - ** register to attain desired value. - */ + * Waiting for CLKACTIVITY_I2C0_GFCLK field in AM335X_CM_WKUP_CLKSTCTRL + * register to attain desired value. + */ while ( AM335X_CM_WKUP_CLKSTCTRL_CLKACTIVITY_I2C0_GFCLK != ( REG( AM335X_SOC_CM_WKUP_REGS + AM335X_CM_WKUP_CLKSTCTRL ) & AM335X_CM_WKUP_CLKSTCTRL_CLKACTIVITY_I2C0_GFCLK ) ) ; /* - ** Waiting for IDLEST field in AM335X_CM_WKUP_I2C0_CLKCTRL register to attain - ** desired value. - */ + * Waiting for IDLEST field in AM335X_CM_WKUP_I2C0_CLKCTRL register to attain + * desired value. + */ while ( ( AM335X_CM_WKUP_I2C0_CLKCTRL_IDLEST_FUNC << AM335X_CM_WKUP_I2C0_CLKCTRL_IDLEST_SHIFT ) != ( REG( AM335X_SOC_CM_WKUP_REGS + AM335X_CM_WKUP_I2C0_CLKCTRL ) & @@ -100,7 +100,7 @@ static void am335x_i2c_reset( bbb_i2c_bus *bus ) } } /* - Possible values for msg->flag + * Possible values for msg->flag * - @ref I2C_M_TEN, * - @ref I2C_M_RD, * - @ref I2C_M_STOP, @@ -116,13 +116,15 @@ static void am335x_i2c_set_address_size( volatile bbb_i2c_regs *regs ) { - /*can be configured multiple modes here. - **Need to think about own address modes*/ + /* + * Can be configured multiple modes here. + * Need to think about own address modes + */ if ( ( msgs->flags & I2C_M_TEN ) == 0 ) { - /* 7-bit mode slave address mode*/ + /* 7-bit mode slave address mode */ REG( ®s->BBB_I2C_CON ) = AM335X_I2C_CFG_7BIT_SLAVE_ADDR; } else { - /* 10-bit slave address mode*/ + /* 10-bit slave address mode */ REG( ®s->BBB_I2C_CON ) = AM335X_I2C_CFG_10BIT_SLAVE_ADDR; } } @@ -282,12 +284,14 @@ static void am335x_i2c_interrupt( void *arg ) { bbb_i2c_bus *bus = arg; volatile bbb_i2c_regs *regs = bus->regs; - /* get status of enabled interrupts */ + /* Get status of enabled interrupts */ uint32_t irqstatus = REG( ®s->BBB_I2C_IRQSTATUS ); bool done = false; - /* Clear all enabled interrupt except receive ready - and transmit ready interrupt in status register */ + /* + * Clear all enabled interrupt except receive ready + * and transmit ready interrupt in status register + */ REG( ®s->BBB_I2C_IRQSTATUS ) = ( irqstatus & ~( AM335X_I2C_IRQSTATUS_RRDY | AM335X_I2C_IRQSTATUS_XRDY ) ); @@ -417,7 +421,7 @@ int am335x_i2c_bus_register( rtems_status_code sc; int err; - /*check bus number is >0 & <MAX*/ + /* Check bus number is >0 & <MAX */ bus = (bbb_i2c_bus *) i2c_bus_alloc_and_init( sizeof( *bus ) ); if ( bus == NULL ) { |