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https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-14 22:44:27 +08:00
spi/bfin_spi: convert struct names to something more logical
The current structure names are a bit confusing as to what they represent, so use better names. Reported-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
parent
9c4542c7a3
commit
b9f139a7a6
@ -42,15 +42,15 @@ MODULE_LICENSE("GPL");
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#define DONE_STATE ((void *)2)
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#define ERROR_STATE ((void *)-1)
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struct driver_data;
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struct master_data;
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struct transfer_ops {
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void (*write) (struct driver_data *);
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void (*read) (struct driver_data *);
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void (*duplex) (struct driver_data *);
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void (*write) (struct master_data *);
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void (*read) (struct master_data *);
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void (*duplex) (struct master_data *);
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};
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struct driver_data {
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struct master_data {
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/* Driver model hookup */
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struct platform_device *pdev;
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@ -80,7 +80,7 @@ struct driver_data {
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/* Current message transfer state info */
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struct spi_message *cur_msg;
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struct spi_transfer *cur_transfer;
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struct chip_data *cur_chip;
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struct slave_data *cur_chip;
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size_t len_in_bytes;
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size_t len;
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void *tx;
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@ -105,7 +105,7 @@ struct driver_data {
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const struct transfer_ops *ops;
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};
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struct chip_data {
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struct slave_data {
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u16 ctl_reg;
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u16 baud;
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u16 flag;
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@ -123,9 +123,9 @@ struct chip_data {
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};
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#define DEFINE_SPI_REG(reg, off) \
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static inline u16 read_##reg(struct driver_data *drv_data) \
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static inline u16 read_##reg(struct master_data *drv_data) \
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{ return bfin_read16(drv_data->regs_base + off); } \
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static inline void write_##reg(struct driver_data *drv_data, u16 v) \
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static inline void write_##reg(struct master_data *drv_data, u16 v) \
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{ bfin_write16(drv_data->regs_base + off, v); }
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DEFINE_SPI_REG(CTRL, 0x00)
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@ -136,7 +136,7 @@ DEFINE_SPI_REG(RDBR, 0x10)
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DEFINE_SPI_REG(BAUD, 0x14)
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DEFINE_SPI_REG(SHAW, 0x18)
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static void bfin_spi_enable(struct driver_data *drv_data)
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static void bfin_spi_enable(struct master_data *drv_data)
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{
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u16 cr;
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@ -144,7 +144,7 @@ static void bfin_spi_enable(struct driver_data *drv_data)
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write_CTRL(drv_data, (cr | BIT_CTL_ENABLE));
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}
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static void bfin_spi_disable(struct driver_data *drv_data)
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static void bfin_spi_disable(struct master_data *drv_data)
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{
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u16 cr;
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@ -167,7 +167,7 @@ static u16 hz_to_spi_baud(u32 speed_hz)
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return spi_baud;
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}
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static int bfin_spi_flush(struct driver_data *drv_data)
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static int bfin_spi_flush(struct master_data *drv_data)
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{
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unsigned long limit = loops_per_jiffy << 1;
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@ -181,7 +181,7 @@ static int bfin_spi_flush(struct driver_data *drv_data)
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}
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/* Chip select operation functions for cs_change flag */
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static void bfin_spi_cs_active(struct driver_data *drv_data, struct chip_data *chip)
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static void bfin_spi_cs_active(struct master_data *drv_data, struct slave_data *chip)
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{
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if (likely(chip->chip_select_num)) {
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u16 flag = read_FLAG(drv_data);
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@ -194,7 +194,7 @@ static void bfin_spi_cs_active(struct driver_data *drv_data, struct chip_data *c
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}
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}
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static void bfin_spi_cs_deactive(struct driver_data *drv_data, struct chip_data *chip)
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static void bfin_spi_cs_deactive(struct master_data *drv_data, struct slave_data *chip)
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{
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if (likely(chip->chip_select_num)) {
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u16 flag = read_FLAG(drv_data);
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@ -212,7 +212,7 @@ static void bfin_spi_cs_deactive(struct driver_data *drv_data, struct chip_data
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}
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/* enable or disable the pin muxed by GPIO and SPI CS to work as SPI CS */
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static inline void bfin_spi_cs_enable(struct driver_data *drv_data, struct chip_data *chip)
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static inline void bfin_spi_cs_enable(struct master_data *drv_data, struct slave_data *chip)
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{
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u16 flag = read_FLAG(drv_data);
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@ -221,7 +221,7 @@ static inline void bfin_spi_cs_enable(struct driver_data *drv_data, struct chip_
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write_FLAG(drv_data, flag);
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}
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static inline void bfin_spi_cs_disable(struct driver_data *drv_data, struct chip_data *chip)
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static inline void bfin_spi_cs_disable(struct master_data *drv_data, struct slave_data *chip)
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{
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u16 flag = read_FLAG(drv_data);
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@ -231,9 +231,9 @@ static inline void bfin_spi_cs_disable(struct driver_data *drv_data, struct chip
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}
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/* stop controller and re-config current chip*/
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static void bfin_spi_restore_state(struct driver_data *drv_data)
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static void bfin_spi_restore_state(struct master_data *drv_data)
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{
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struct chip_data *chip = drv_data->cur_chip;
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struct slave_data *chip = drv_data->cur_chip;
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/* Clear status and disable clock */
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write_STAT(drv_data, BIT_STAT_CLR);
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@ -249,12 +249,12 @@ static void bfin_spi_restore_state(struct driver_data *drv_data)
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}
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/* used to kick off transfer in rx mode and read unwanted RX data */
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static inline void bfin_spi_dummy_read(struct driver_data *drv_data)
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static inline void bfin_spi_dummy_read(struct master_data *drv_data)
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{
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(void) read_RDBR(drv_data);
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}
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static void bfin_spi_u8_writer(struct driver_data *drv_data)
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static void bfin_spi_u8_writer(struct master_data *drv_data)
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{
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/* clear RXS (we check for RXS inside the loop) */
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bfin_spi_dummy_read(drv_data);
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@ -270,7 +270,7 @@ static void bfin_spi_u8_writer(struct driver_data *drv_data)
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}
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}
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static void bfin_spi_u8_reader(struct driver_data *drv_data)
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static void bfin_spi_u8_reader(struct master_data *drv_data)
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{
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u16 tx_val = drv_data->cur_chip->idle_tx_val;
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@ -285,7 +285,7 @@ static void bfin_spi_u8_reader(struct driver_data *drv_data)
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}
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}
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static void bfin_spi_u8_duplex(struct driver_data *drv_data)
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static void bfin_spi_u8_duplex(struct master_data *drv_data)
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{
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/* discard old RX data and clear RXS */
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bfin_spi_dummy_read(drv_data);
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@ -304,7 +304,7 @@ static const struct transfer_ops bfin_transfer_ops_u8 = {
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.duplex = bfin_spi_u8_duplex,
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};
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static void bfin_spi_u16_writer(struct driver_data *drv_data)
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static void bfin_spi_u16_writer(struct master_data *drv_data)
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{
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/* clear RXS (we check for RXS inside the loop) */
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bfin_spi_dummy_read(drv_data);
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@ -321,7 +321,7 @@ static void bfin_spi_u16_writer(struct driver_data *drv_data)
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}
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}
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static void bfin_spi_u16_reader(struct driver_data *drv_data)
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static void bfin_spi_u16_reader(struct master_data *drv_data)
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{
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u16 tx_val = drv_data->cur_chip->idle_tx_val;
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@ -337,7 +337,7 @@ static void bfin_spi_u16_reader(struct driver_data *drv_data)
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}
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}
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static void bfin_spi_u16_duplex(struct driver_data *drv_data)
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static void bfin_spi_u16_duplex(struct master_data *drv_data)
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{
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/* discard old RX data and clear RXS */
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bfin_spi_dummy_read(drv_data);
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@ -359,7 +359,7 @@ static const struct transfer_ops bfin_transfer_ops_u16 = {
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};
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/* test if ther is more transfer to be done */
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static void *bfin_spi_next_transfer(struct driver_data *drv_data)
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static void *bfin_spi_next_transfer(struct master_data *drv_data)
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{
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struct spi_message *msg = drv_data->cur_msg;
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struct spi_transfer *trans = drv_data->cur_transfer;
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@ -378,9 +378,9 @@ static void *bfin_spi_next_transfer(struct driver_data *drv_data)
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* caller already set message->status;
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* dma and pio irqs are blocked give finished message back
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*/
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static void bfin_spi_giveback(struct driver_data *drv_data)
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static void bfin_spi_giveback(struct master_data *drv_data)
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{
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struct chip_data *chip = drv_data->cur_chip;
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struct slave_data *chip = drv_data->cur_chip;
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struct spi_transfer *last_transfer;
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unsigned long flags;
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struct spi_message *msg;
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@ -412,8 +412,8 @@ static void bfin_spi_giveback(struct driver_data *drv_data)
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/* spi data irq handler */
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static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id)
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{
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struct driver_data *drv_data = dev_id;
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struct chip_data *chip = drv_data->cur_chip;
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struct master_data *drv_data = dev_id;
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struct slave_data *chip = drv_data->cur_chip;
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struct spi_message *msg = drv_data->cur_msg;
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int n_bytes = drv_data->n_bytes;
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@ -484,8 +484,8 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id)
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static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id)
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{
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struct driver_data *drv_data = dev_id;
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struct chip_data *chip = drv_data->cur_chip;
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struct master_data *drv_data = dev_id;
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struct slave_data *chip = drv_data->cur_chip;
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struct spi_message *msg = drv_data->cur_msg;
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unsigned long timeout;
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unsigned short dmastat = get_dma_curr_irqstat(drv_data->dma_channel);
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@ -548,11 +548,11 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id)
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static void bfin_spi_pump_transfers(unsigned long data)
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{
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struct driver_data *drv_data = (struct driver_data *)data;
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struct master_data *drv_data = (struct master_data *)data;
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struct spi_message *message = NULL;
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struct spi_transfer *transfer = NULL;
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struct spi_transfer *previous = NULL;
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struct chip_data *chip = NULL;
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struct slave_data *chip = NULL;
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u8 width;
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u16 cr, dma_width, dma_config;
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u32 tranf_success = 1;
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@ -872,10 +872,10 @@ static void bfin_spi_pump_transfers(unsigned long data)
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/* pop a msg from queue and kick off real transfer */
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static void bfin_spi_pump_messages(struct work_struct *work)
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{
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struct driver_data *drv_data;
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struct master_data *drv_data;
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unsigned long flags;
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drv_data = container_of(work, struct driver_data, pump_messages);
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drv_data = container_of(work, struct master_data, pump_messages);
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/* Lock queue and check for queue work */
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spin_lock_irqsave(&drv_data->lock, flags);
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@ -929,7 +929,7 @@ static void bfin_spi_pump_messages(struct work_struct *work)
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*/
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static int bfin_spi_transfer(struct spi_device *spi, struct spi_message *msg)
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{
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struct driver_data *drv_data = spi_master_get_devdata(spi->master);
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struct master_data *drv_data = spi_master_get_devdata(spi->master);
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unsigned long flags;
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spin_lock_irqsave(&drv_data->lock, flags);
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@ -974,8 +974,8 @@ static u16 ssel[][MAX_SPI_SSEL] = {
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static int bfin_spi_setup(struct spi_device *spi)
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{
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struct bfin5xx_spi_chip *chip_info;
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struct chip_data *chip = NULL;
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struct driver_data *drv_data = spi_master_get_devdata(spi->master);
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struct slave_data *chip = NULL;
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struct master_data *drv_data = spi_master_get_devdata(spi->master);
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int ret = -EINVAL;
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if (spi->bits_per_word != 8 && spi->bits_per_word != 16)
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@ -1155,8 +1155,8 @@ static int bfin_spi_setup(struct spi_device *spi)
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*/
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static void bfin_spi_cleanup(struct spi_device *spi)
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{
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struct chip_data *chip = spi_get_ctldata(spi);
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struct driver_data *drv_data = spi_master_get_devdata(spi->master);
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struct slave_data *chip = spi_get_ctldata(spi);
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struct master_data *drv_data = spi_master_get_devdata(spi->master);
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if (!chip)
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return;
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@ -1176,7 +1176,7 @@ static void bfin_spi_cleanup(struct spi_device *spi)
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spi_set_ctldata(spi, NULL);
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}
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static inline int bfin_spi_init_queue(struct driver_data *drv_data)
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static inline int bfin_spi_init_queue(struct master_data *drv_data)
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{
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INIT_LIST_HEAD(&drv_data->queue);
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spin_lock_init(&drv_data->lock);
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@ -1198,7 +1198,7 @@ static inline int bfin_spi_init_queue(struct driver_data *drv_data)
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return 0;
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}
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static inline int bfin_spi_start_queue(struct driver_data *drv_data)
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static inline int bfin_spi_start_queue(struct master_data *drv_data)
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{
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unsigned long flags;
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@ -1220,7 +1220,7 @@ static inline int bfin_spi_start_queue(struct driver_data *drv_data)
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return 0;
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}
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static inline int bfin_spi_stop_queue(struct driver_data *drv_data)
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static inline int bfin_spi_stop_queue(struct master_data *drv_data)
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{
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unsigned long flags;
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unsigned limit = 500;
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@ -1249,7 +1249,7 @@ static inline int bfin_spi_stop_queue(struct driver_data *drv_data)
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return status;
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}
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static inline int bfin_spi_destroy_queue(struct driver_data *drv_data)
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static inline int bfin_spi_destroy_queue(struct master_data *drv_data)
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{
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int status;
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@ -1267,14 +1267,14 @@ static int __init bfin_spi_probe(struct platform_device *pdev)
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struct device *dev = &pdev->dev;
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struct bfin5xx_spi_master *platform_info;
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struct spi_master *master;
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struct driver_data *drv_data = 0;
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struct master_data *drv_data = 0;
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struct resource *res;
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int status = 0;
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platform_info = dev->platform_data;
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/* Allocate master with space for drv_data */
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master = spi_alloc_master(dev, sizeof(struct driver_data) + 16);
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master = spi_alloc_master(dev, sizeof(struct master_data) + 16);
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if (!master) {
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dev_err(&pdev->dev, "can not alloc spi_master\n");
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return -ENOMEM;
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@ -1377,7 +1377,7 @@ out_error_get_res:
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/* stop hardware and remove the driver */
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static int __devexit bfin_spi_remove(struct platform_device *pdev)
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{
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struct driver_data *drv_data = platform_get_drvdata(pdev);
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struct master_data *drv_data = platform_get_drvdata(pdev);
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int status = 0;
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if (!drv_data)
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@ -1416,7 +1416,7 @@ static int __devexit bfin_spi_remove(struct platform_device *pdev)
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#ifdef CONFIG_PM
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static int bfin_spi_suspend(struct platform_device *pdev, pm_message_t state)
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{
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struct driver_data *drv_data = platform_get_drvdata(pdev);
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struct master_data *drv_data = platform_get_drvdata(pdev);
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int status = 0;
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status = bfin_spi_stop_queue(drv_data);
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@ -1431,7 +1431,7 @@ static int bfin_spi_suspend(struct platform_device *pdev, pm_message_t state)
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static int bfin_spi_resume(struct platform_device *pdev)
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{
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struct driver_data *drv_data = platform_get_drvdata(pdev);
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struct master_data *drv_data = platform_get_drvdata(pdev);
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int status = 0;
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/* Enable the SPI interface */
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