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arch/arm/src/lpc17xx_40xx/lpc17_40_can.c: Appease nxstyle

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YAMAMOTO Takashi 2020-11-25 19:26:40 +09:00 committed by Xiang Xiao
parent 2351b6f910
commit f7feaa8f79
1 changed files with 52 additions and 29 deletions
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81
arch/arm/src/lpc17xx_40xx/lpc17_40_can.c
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@ -1,4 +1,4 @@
/************************************************************************************
/****************************************************************************
* arch/arm/src/lpc17xx_40xx/lpc17_40_can.c
*
* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
@ -42,7 +42,11 @@
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
@ -71,23 +75,24 @@
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifdef CONFIG_LPC17_40_CAN1
/* A CAN bit rate must be provided */
/* A CAN bit rate must be provided */
# ifndef CONFIG_LPC17_40_CAN1_BAUD
# error "CONFIG_LPC17_40_CAN1_BAUD is not defined"
# endif
/* If no divsor is provided, use a divisor of 4 */
/* If no divsor is provided, use a divisor of 4 */
# ifndef CONFIG_LPC17_40_CAN1_DIVISOR
# define CONFIG_LPC17_40_CAN1_DIVISOR 4
# endif
/* Get the SYSCON_PCLKSEL value for CAN1 the implements this divisor */
/* Get the SYSCON_PCLKSEL value for CAN1 the implements this divisor */
# if CONFIG_LPC17_40_CAN1_DIVISOR == 1
# define CAN1_CCLK_DIVISOR SYSCON_PCLKSEL_CCLK
@ -104,19 +109,19 @@
#ifdef CONFIG_LPC17_40_CAN2
/* A CAN bit rate must be provided */
/* A CAN bit rate must be provided */
# ifndef CONFIG_LPC17_40_CAN2_BAUD
# error "CONFIG_LPC17_40_CAN2_BAUD is not defined"
# endif
/* If no divsor is provided, use a divisor of 4 */
/* If no divsor is provided, use a divisor of 4 */
# ifndef CONFIG_LPC17_40_CAN2_DIVISOR
# define CONFIG_LPC17_40_CAN2_DIVISOR 4
# endif
/* Get the SYSCON_PCLKSEL value for CAN2 the implements this divisor */
/* Get the SYSCON_PCLKSEL value for CAN2 the implements this divisor */
# if CONFIG_LPC17_40_CAN2_DIVISOR == 1
# define CAN2_CCLK_DIVISOR SYSCON_PCLKSEL_CCLK
@ -157,6 +162,7 @@
#define CAN_BIT_QUANTA (CONFIG_LPC17_40_CAN_TSEG1 + CONFIG_LPC17_40_CAN_TSEG2 + 1)
/* Debug ********************************************************************/
/* Non-standard debug that may be enabled just for testing CAN */
#ifndef CONFIG_DEBUG_CAN_INFO
@ -164,6 +170,7 @@
#endif
/* Timing *******************************************************************/
/* CAN clocking is provided at CCLK divided by the configured divisor */
#ifdef BOARD_CCLKSEL_DIVIDER
@ -188,6 +195,7 @@ struct up_dev_s
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* CAN Register access */
#ifdef CONFIG_LPC17_40_CAN_REGDEBUG
@ -212,9 +220,11 @@ static int lpc17can_setup(FAR struct can_dev_s *dev);
static void lpc17can_shutdown(FAR struct can_dev_s *dev);
static void lpc17can_rxint(FAR struct can_dev_s *dev, bool enable);
static void lpc17can_txint(FAR struct can_dev_s *dev, bool enable);
static int lpc17can_ioctl(FAR struct can_dev_s *dev, int cmd, unsigned long arg);
static int lpc17can_ioctl(FAR struct can_dev_s *dev, int cmd,
unsigned long arg);
static int lpc17can_remoterequest(FAR struct can_dev_s *dev, uint16_t id);
static int lpc17can_send(FAR struct can_dev_s *dev, FAR struct can_msg_s *msg);
static int lpc17can_send(FAR struct can_dev_s *dev,
FAR struct can_msg_s *msg);
static bool lpc17can_txready(FAR struct can_dev_s *dev);
static bool lpc17can_txempty(FAR struct can_dev_s *dev);
@ -280,6 +290,7 @@ static struct can_dev_s g_can2dev =
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: can_printreg
*
@ -329,7 +340,7 @@ static void can_printreg(uint32_t addr, uint32_t value)
{
/* Yes.. then show how many times the value repeated */
caninfo("[repeats %d more times]\n", count-3);
caninfo("[repeats %d more times]\n", count - 3);
}
/* Save the new address, value, and count */
@ -653,8 +664,8 @@ static void lpc17can_txint(FAR struct can_dev_s *dev, bool enable)
if (!enable)
{
/* TX interrupts are also disabled from the interrupt handler, so we have
* to protect this code section.
/* TX interrupts are also disabled from the interrupt handler, so we
* have to protect this code section.
*/
flags = enter_critical_section();
@ -666,7 +677,6 @@ static void lpc17can_txint(FAR struct can_dev_s *dev, bool enable)
can_putreg(priv, LPC17_40_CAN_IER_OFFSET, regval);
leave_critical_section(flags);
}
}
/****************************************************************************
@ -683,7 +693,8 @@ static void lpc17can_txint(FAR struct can_dev_s *dev, bool enable)
*
****************************************************************************/
static int lpc17can_ioctl(FAR struct can_dev_s *dev, int cmd, unsigned long arg)
static int lpc17can_ioctl(FAR struct can_dev_s *dev, int cmd,
unsigned long arg)
{
canerr("ERROR: Fix me -- Not Implemented\n");
return 0;
@ -732,7 +743,8 @@ static int lpc17can_remoterequest(FAR struct can_dev_s *dev, uint16_t id)
*
****************************************************************************/
static int lpc17can_send(FAR struct can_dev_s *dev, FAR struct can_msg_s *msg)
static int lpc17can_send(FAR struct can_dev_s *dev,
FAR struct can_msg_s *msg)
{
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->cd_priv;
uint32_t tid = (uint32_t)msg->cm_hdr.ch_id;
@ -793,8 +805,10 @@ static int lpc17can_send(FAR struct can_dev_s *dev, FAR struct can_msg_s *msg)
can_putreg(priv, LPC17_40_CAN_TFI1_OFFSET, tfi);
can_putreg(priv, LPC17_40_CAN_TID1_OFFSET, tid);
can_putreg(priv, LPC17_40_CAN_TDA1_OFFSET, *(uint32_t *)&msg->cm_data[0]);
can_putreg(priv, LPC17_40_CAN_TDB1_OFFSET, *(uint32_t *)&msg->cm_data[4]);
can_putreg(priv, LPC17_40_CAN_TDA1_OFFSET,
*(uint32_t *)&msg->cm_data[0]);
can_putreg(priv, LPC17_40_CAN_TDB1_OFFSET,
*(uint32_t *)&msg->cm_data[4]);
/* Send the message */
@ -823,8 +837,10 @@ static int lpc17can_send(FAR struct can_dev_s *dev, FAR struct can_msg_s *msg)
can_putreg(priv, LPC17_40_CAN_TFI2_OFFSET, tfi);
can_putreg(priv, LPC17_40_CAN_TID2_OFFSET, tid);
can_putreg(priv, LPC17_40_CAN_TDA2_OFFSET, *(uint32_t *)&msg->cm_data[0]);
can_putreg(priv, LPC17_40_CAN_TDB2_OFFSET, *(uint32_t *)&msg->cm_data[4]);
can_putreg(priv, LPC17_40_CAN_TDA2_OFFSET,
*(uint32_t *)&msg->cm_data[0]);
can_putreg(priv, LPC17_40_CAN_TDB2_OFFSET,
*(uint32_t *)&msg->cm_data[4]);
/* Send the message */
@ -853,8 +869,10 @@ static int lpc17can_send(FAR struct can_dev_s *dev, FAR struct can_msg_s *msg)
can_putreg(priv, LPC17_40_CAN_TFI3_OFFSET, tfi);
can_putreg(priv, LPC17_40_CAN_TID3_OFFSET, tid);
can_putreg(priv, LPC17_40_CAN_TDA3_OFFSET, *(uint32_t *)&msg->cm_data[0]);
can_putreg(priv, LPC17_40_CAN_TDB3_OFFSET, *(uint32_t *)&msg->cm_data[4]);
can_putreg(priv, LPC17_40_CAN_TDA3_OFFSET,
*(uint32_t *)&msg->cm_data[0]);
can_putreg(priv, LPC17_40_CAN_TDB3_OFFSET,
*(uint32_t *)&msg->cm_data[4]);
/* Send the message */
@ -943,7 +961,9 @@ static void can_interrupt(FAR struct can_dev_s *dev)
uint32_t rid;
uint32_t regval;
/* Read the interrupt and capture register (also clearing most status bits) */
/* Read the interrupt and capture register (also clearing most status
* bits)
*/
regval = can_getreg(priv, LPC17_40_CAN_ICR_OFFSET);
caninfo("CAN%d ICR: %08x\n", priv->port, regval);
@ -976,7 +996,8 @@ static void can_interrupt(FAR struct can_dev_s *dev)
if ((rfs & CAN_RFS_FF) != 0)
{
canerr("ERROR: Received message with extended identifier. Dropped\n");
canerr("ERROR: Received message with extended identifier. "
"Dropped\n");
}
else
#endif
@ -1111,7 +1132,8 @@ static int can12_interrupt(int irq, void *context, FAR void *arg)
* Tq = brp * Tcan
*
* Where:
* Tcan is the period of the APB clock (PCLK = CCLK / CONFIG_LPC17_40_CAN1_DIVISOR).
* Tcan is the period of the APB clock (PCLK =
* CCLK / CONFIG_LPC17_40_CAN1_DIVISOR).
*
* Input Parameters:
* priv - A reference to the CAN block status
@ -1168,9 +1190,9 @@ static int can_bittiming(struct up_dev_s *priv)
}
}
/* Otherwise, nquanta is CAN_BIT_QUANTA, ts1 is CONFIG_LPC17_40_CAN_TSEG1, ts2 is
* CONFIG_LPC17_40_CAN_TSEG2 and we calculate brp to achieve CAN_BIT_QUANTA quanta
* in the bit time
/* Otherwise, nquanta is CAN_BIT_QUANTA, ts1 is CONFIG_LPC17_40_CAN_TSEG1,
* ts2 is CONFIG_LPC17_40_CAN_TSEG2 and we calculate brp to achieve
* CAN_BIT_QUANTA quanta in the bit time
*/
else
@ -1178,7 +1200,7 @@ static int can_bittiming(struct up_dev_s *priv)
ts1 = CONFIG_LPC17_40_CAN_TSEG1;
ts2 = CONFIG_LPC17_40_CAN_TSEG2;
brp = (nclks + (CAN_BIT_QUANTA / 2)) / CAN_BIT_QUANTA;
DEBUGASSERT(brp >=1 && brp <= CAN_BTR_BRP_MAX);
DEBUGASSERT(brp >= 1 && brp <= CAN_BTR_BRP_MAX);
}
sjw = 1;
@ -1208,6 +1230,7 @@ static int can_bittiming(struct up_dev_s *priv)
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: lpc17_40_caninitialize
*