---
drivers/spi/spi-stm32.c | 62 +++++++++++++++++++++++++++++++++++--------------
1 file changed, 45 insertions(+), 17 deletions(-)
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c
index e041f9c4ec47..44ac6eb3298d 100644
--- a/drivers/spi/spi-stm32.c
+++ b/drivers/spi/spi-stm32.c
@@ -175,7 +175,7 @@
#define SPI_DMA_MIN_BYTES 16
/**
- * stm32_spi_reg - stm32 SPI register & bitfield desc
+ * struct stm32_spi_reg - stm32 SPI register & bitfield desc
* @reg: register offset
* @mask: bitfield mask
* @shift: left shift
@@ -187,16 +187,16 @@ struct stm32_spi_reg {
};
/**
- * stm32_spi_regspec - stm32 registers definition, compatible dependent data
- * en: enable register and SPI enable bit
- * dma_rx_en: SPI DMA RX enable register end SPI DMA RX enable bit
- * dma_tx_en: SPI DMA TX enable register end SPI DMA TX enable bit
- * cpol: clock polarity register and polarity bit
- * cpha: clock phase register and phase bit
- * lsb_first: LSB transmitted first register and bit
- * br: baud rate register and bitfields
- * rx: SPI RX data register
- * tx: SPI TX data register
+ * struct stm32_spi_regspec - stm32 registers definition, compatible dependent data
+ * @en: enable register and SPI enable bit
+ * @dma_rx_en: SPI DMA RX enable register end SPI DMA RX enable bit
+ * @dma_tx_en: SPI DMA TX enable register end SPI DMA TX enable bit
+ * @cpol: clock polarity register and polarity bit
+ * @cpha: clock phase register and phase bit
+ * @lsb_first: LSB transmitted first register and bit
+ * @br: baud rate register and bitfields
+ * @rx: SPI RX data register
+ * @tx: SPI TX data register
*/
struct stm32_spi_regspec {
const struct stm32_spi_reg en;
@@ -213,7 +213,7 @@ struct stm32_spi_regspec {
struct stm32_spi;
/**
- * stm32_spi_cfg - stm32 compatible configuration data
+ * struct stm32_spi_cfg - stm32 compatible configuration data
* @regs: registers descriptions
* @get_fifo_size: routine to get fifo size
* @get_bpw_mask: routine to get bits per word mask
@@ -223,13 +223,13 @@ struct stm32_spi;
* @set_mode: routine to configure registers to desired mode
* @set_data_idleness: optional routine to configure registers to desired idle
* time between frames (if driver has this functionality)
- * set_number_of_data: optional routine to configure registers to desired
+ * @set_number_of_data: optional routine to configure registers to desired
* number of data (if driver has this functionality)
* @can_dma: routine to determine if the transfer is eligible for DMA use
* @transfer_one_dma_start: routine to start transfer a single spi_transfer
* using DMA
- * @dma_rx cb: routine to call after DMA RX channel operation is complete
- * @dma_tx cb: routine to call after DMA TX channel operation is complete
+ * @dma_rx_cb: routine to call after DMA RX channel operation is complete
+ * @dma_tx_cb: routine to call after DMA TX channel operation is complete
* @transfer_one_irq: routine to configure interrupts for driver
* @irq_handler_event: Interrupt handler for SPI controller events
* @irq_handler_thread: thread of interrupt handler for SPI controller
@@ -587,6 +587,7 @@ static void stm32f4_spi_read_rx(struct stm32_spi *spi)
/**
* stm32h7_spi_read_rxfifo - Read bytes in Receive Data Register
* @spi: pointer to the spi controller data structure
+ * @flush: boolean indicating that FIFO should be flushed
*
* Write in rx_buf depends on remaining bytes to avoid to write beyond
* rx_buf end.
@@ -756,6 +757,9 @@ static void stm32h7_spi_disable(struct stm32_spi *spi)
/**
* stm32_spi_can_dma - Determine if the transfer is eligible for DMA use
+ * @master: controller master interface
+ * @spi_dev: pointer to the spi device
+ * @transfer: pointer to spi transfer
*
* If driver has fifo and the current transfer size is greater than fifo size,
* use DMA. Otherwise use DMA for transfer longer than defined DMA min bytes.
@@ -974,6 +978,8 @@ static irqreturn_t stm32h7_spi_irq_thread(int irq, void *dev_id)
/**
* stm32_spi_prepare_msg - set up the controller to transfer a single message
+ * @master: controller master interface
+ * @msg: pointer to spi message
*/
static int stm32_spi_prepare_msg(struct spi_master *master,
struct spi_message *msg)
@@ -1026,6 +1032,7 @@ static int stm32_spi_prepare_msg(struct spi_master *master,
/**
* stm32f4_spi_dma_tx_cb - dma callback
+ * @data: pointer to the spi controller data structure
*
* DMA callback is called when the transfer is complete for DMA TX channel.
*/
@@ -1041,6 +1048,7 @@ static void stm32f4_spi_dma_tx_cb(void *data)
/**
* stm32f4_spi_dma_rx_cb - dma callback
+ * @data: pointer to the spi controller data structure
*
* DMA callback is called when the transfer is complete for DMA RX channel.
*/
@@ -1054,6 +1062,7 @@ static void stm32f4_spi_dma_rx_cb(void *data)
/**
* stm32h7_spi_dma_cb - dma callback
+ * @data: pointer to the spi controller data structure
*
* DMA callback is called when the transfer is complete or when an error
* occurs. If the transfer is complete, EOT flag is raised.
@@ -1079,6 +1088,9 @@ static void stm32h7_spi_dma_cb(void *data)
/**
* stm32_spi_dma_config - configure dma slave channel depending on current
* transfer bits_per_word.
+ * @spi: pointer to the spi controller data structure
+ * @dma_conf: pointer to the dma_slave_config structure
+ * @dir: direction of the dma transfer
*/
static void stm32_spi_dma_config(struct stm32_spi *spi,
struct dma_slave_config *dma_conf,
@@ -1126,6 +1138,7 @@ static void stm32_spi_dma_config(struct stm32_spi *spi,
/**
* stm32f4_spi_transfer_one_irq - transfer a single spi_transfer using
* interrupts
+ * @spi: pointer to the spi controller data structure
*
* It must returns 0 if the transfer is finished or 1 if the transfer is still
* in progress.
@@ -1166,6 +1179,7 @@ static int stm32f4_spi_transfer_one_irq(struct stm32_spi *spi)
/**
* stm32h7_spi_transfer_one_irq - transfer a single spi_transfer using
* interrupts
+ * @spi: pointer to the spi controller data structure
*
* It must returns 0 if the transfer is finished or 1 if the transfer is still
* in progress.
@@ -1207,6 +1221,7 @@ static int stm32h7_spi_transfer_one_irq(struct stm32_spi *spi)
/**
* stm32f4_spi_transfer_one_dma_start - Set SPI driver registers to start
* transfer using DMA
+ * @spi: pointer to the spi controller data structure
*/
static void stm32f4_spi_transfer_one_dma_start(struct stm32_spi *spi)
{
@@ -1227,6 +1242,7 @@ static void stm32f4_spi_transfer_one_dma_start(struct stm32_spi *spi)
/**
* stm32h7_spi_transfer_one_dma_start - Set SPI driver registers to start
* transfer using DMA
+ * @spi: pointer to the spi controller data structure
*/
static void stm32h7_spi_transfer_one_dma_start(struct stm32_spi *spi)
{
@@ -1243,6 +1259,8 @@ static void stm32h7_spi_transfer_one_dma_start(struct stm32_spi *spi)
/**
* stm32_spi_transfer_one_dma - transfer a single spi_transfer using DMA
+ * @spi: pointer to the spi controller data structure
+ * @xfer: pointer to the spi_transfer structure
*
* It must returns 0 if the transfer is finished or 1 if the transfer is still
* in progress.
@@ -1405,7 +1423,7 @@ static void stm32_spi_set_mbr(struct stm32_spi *spi, u32 mbrdiv)
/**
* stm32_spi_communication_type - return transfer communication type
* @spi_dev: pointer to the spi device
- * transfer: pointer to spi transfer
+ * @transfer: pointer to spi transfer
*/
static unsigned int stm32_spi_communication_type(struct spi_device *spi_dev,
struct spi_transfer *transfer)
@@ -1522,7 +1540,7 @@ static void stm32h7_spi_data_idleness(struct stm32_spi *spi, u32 len)
/**
* stm32h7_spi_number_of_data - configure number of data at current transfer
* @spi: pointer to the spi controller data structure
- * @len: transfer length
+ * @nb_words: transfer length (in words)
*/
static int stm32h7_spi_number_of_data(struct stm32_spi *spi, u32 nb_words)
{
@@ -1546,6 +1564,9 @@ static int stm32h7_spi_number_of_data(struct stm32_spi *spi, u32 nb_words)
* stm32_spi_transfer_one_setup - common setup to transfer a single
* spi_transfer either using DMA or
* interrupts.
+ * @spi: pointer to the spi controller data structure
+ * @spi_dev: pointer to the spi device
+ * @transfer: pointer to spi transfer
*/
static int stm32_spi_transfer_one_setup(struct stm32_spi *spi,
struct spi_device *spi_dev,
@@ -1625,6 +1646,9 @@ static int stm32_spi_transfer_one_setup(struct stm32_spi *spi,
/**
* stm32_spi_transfer_one - transfer a single spi_transfer
+ * @master: controller master interface
+ * @spi_dev: pointer to the spi device
+ * @transfer: pointer to spi transfer
*
* It must return 0 if the transfer is finished or 1 if the transfer is still
* in progress.
@@ -1658,6 +1682,8 @@ static int stm32_spi_transfer_one(struct spi_master *master,
/**
* stm32_spi_unprepare_msg - relax the hardware
+ * @master: controller master interface
+ * @msg: pointer to the spi message
*/
static int stm32_spi_unprepare_msg(struct spi_master *master,
struct spi_message *msg)
@@ -1671,6 +1697,7 @@ static int stm32_spi_unprepare_msg(struct spi_master *master,
/**
* stm32f4_spi_config - Configure SPI controller as SPI master
+ * @spi: pointer to the spi controller data structure
*/
static int stm32f4_spi_config(struct stm32_spi *spi)
{
@@ -1701,6 +1728,7 @@ static int stm32f4_spi_config(struct stm32_spi *spi)
/**
* stm32h7_spi_config - Configure SPI controller as SPI master
+ * @spi: pointer to the spi controller data structure
*/
static int stm32h7_spi_config(struct stm32_spi *spi)
{
