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path: root/drivers/spi/spi_bfin5xx.c
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Diffstat (limited to 'drivers/spi/spi_bfin5xx.c')
-rw-r--r--drivers/spi/spi_bfin5xx.c119
1 files changed, 61 insertions, 58 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index d17ab37d3f64..ab483a0ec6d0 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -1,7 +1,7 @@
/*
* Blackfin On-Chip SPI Driver
*
- * Copyright 2004-2007 Analog Devices Inc.
+ * Copyright 2004-2010 Analog Devices Inc.
*
* Enter bugs at http://blackfin.uclinux.org/
*
@@ -42,15 +42,15 @@ MODULE_LICENSE("GPL");
#define DONE_STATE ((void *)2)
#define ERROR_STATE ((void *)-1)
-struct master_data;
+struct bfin_spi_master_data;
-struct transfer_ops {
- void (*write) (struct master_data *);
- void (*read) (struct master_data *);
- void (*duplex) (struct master_data *);
+struct bfin_spi_transfer_ops {
+ void (*write) (struct bfin_spi_master_data *);
+ void (*read) (struct bfin_spi_master_data *);
+ void (*duplex) (struct bfin_spi_master_data *);
};
-struct master_data {
+struct bfin_spi_master_data {
/* Driver model hookup */
struct platform_device *pdev;
@@ -80,7 +80,7 @@ struct master_data {
/* Current message transfer state info */
struct spi_message *cur_msg;
struct spi_transfer *cur_transfer;
- struct slave_data *cur_chip;
+ struct bfin_spi_slave_data *cur_chip;
size_t len_in_bytes;
size_t len;
void *tx;
@@ -105,10 +105,10 @@ struct master_data {
u16 flag_reg;
int cs_change;
- const struct transfer_ops *ops;
+ const struct bfin_spi_transfer_ops *ops;
};
-struct slave_data {
+struct bfin_spi_slave_data {
u16 ctl_reg;
u16 baud;
u16 flag;
@@ -119,13 +119,13 @@ struct slave_data {
u32 cs_gpio;
u16 idle_tx_val;
u8 pio_interrupt; /* use spi data irq */
- const struct transfer_ops *ops;
+ const struct bfin_spi_transfer_ops *ops;
};
#define DEFINE_SPI_REG(reg, off) \
-static inline u16 read_##reg(struct master_data *drv_data) \
+static inline u16 read_##reg(struct bfin_spi_master_data *drv_data) \
{ return bfin_read16(drv_data->regs_base + off); } \
-static inline void write_##reg(struct master_data *drv_data, u16 v) \
+static inline void write_##reg(struct bfin_spi_master_data *drv_data, u16 v) \
{ bfin_write16(drv_data->regs_base + off, v); }
DEFINE_SPI_REG(CTRL, 0x00)
@@ -136,7 +136,7 @@ DEFINE_SPI_REG(RDBR, 0x10)
DEFINE_SPI_REG(BAUD, 0x14)
DEFINE_SPI_REG(SHAW, 0x18)
-static void bfin_spi_enable(struct master_data *drv_data)
+static void bfin_spi_enable(struct bfin_spi_master_data *drv_data)
{
u16 cr;
@@ -144,7 +144,7 @@ static void bfin_spi_enable(struct master_data *drv_data)
write_CTRL(drv_data, (cr | BIT_CTL_ENABLE));
}
-static void bfin_spi_disable(struct master_data *drv_data)
+static void bfin_spi_disable(struct bfin_spi_master_data *drv_data)
{
u16 cr;
@@ -167,7 +167,7 @@ static u16 hz_to_spi_baud(u32 speed_hz)
return spi_baud;
}
-static int bfin_spi_flush(struct master_data *drv_data)
+static int bfin_spi_flush(struct bfin_spi_master_data *drv_data)
{
unsigned long limit = loops_per_jiffy << 1;
@@ -181,7 +181,7 @@ static int bfin_spi_flush(struct master_data *drv_data)
}
/* Chip select operation functions for cs_change flag */
-static void bfin_spi_cs_active(struct master_data *drv_data, struct slave_data *chip)
+static void bfin_spi_cs_active(struct bfin_spi_master_data *drv_data, struct bfin_spi_slave_data *chip)
{
if (likely(chip->chip_select_num < MAX_CTRL_CS)) {
u16 flag = read_FLAG(drv_data);
@@ -194,7 +194,8 @@ static void bfin_spi_cs_active(struct master_data *drv_data, struct slave_data *
}
}
-static void bfin_spi_cs_deactive(struct master_data *drv_data, struct slave_data *chip)
+static void bfin_spi_cs_deactive(struct bfin_spi_master_data *drv_data,
+ struct bfin_spi_slave_data *chip)
{
if (likely(chip->chip_select_num < MAX_CTRL_CS)) {
u16 flag = read_FLAG(drv_data);
@@ -212,7 +213,8 @@ static void bfin_spi_cs_deactive(struct master_data *drv_data, struct slave_data
}
/* enable or disable the pin muxed by GPIO and SPI CS to work as SPI CS */
-static inline void bfin_spi_cs_enable(struct master_data *drv_data, struct slave_data *chip)
+static inline void bfin_spi_cs_enable(struct bfin_spi_master_data *drv_data,
+ struct bfin_spi_slave_data *chip)
{
if (chip->chip_select_num < MAX_CTRL_CS) {
u16 flag = read_FLAG(drv_data);
@@ -223,7 +225,8 @@ static inline void bfin_spi_cs_enable(struct master_data *drv_data, struct slave
}
}
-static inline void bfin_spi_cs_disable(struct master_data *drv_data, struct slave_data *chip)
+static inline void bfin_spi_cs_disable(struct bfin_spi_master_data *drv_data,
+ struct bfin_spi_slave_data *chip)
{
if (chip->chip_select_num < MAX_CTRL_CS) {
u16 flag = read_FLAG(drv_data);
@@ -235,9 +238,9 @@ static inline void bfin_spi_cs_disable(struct master_data *drv_data, struct slav
}
/* stop controller and re-config current chip*/
-static void bfin_spi_restore_state(struct master_data *drv_data)
+static void bfin_spi_restore_state(struct bfin_spi_master_data *drv_data)
{
- struct slave_data *chip = drv_data->cur_chip;
+ struct bfin_spi_slave_data *chip = drv_data->cur_chip;
/* Clear status and disable clock */
write_STAT(drv_data, BIT_STAT_CLR);
@@ -255,12 +258,12 @@ static void bfin_spi_restore_state(struct master_data *drv_data)
}
/* used to kick off transfer in rx mode and read unwanted RX data */
-static inline void bfin_spi_dummy_read(struct master_data *drv_data)
+static inline void bfin_spi_dummy_read(struct bfin_spi_master_data *drv_data)
{
(void) read_RDBR(drv_data);
}
-static void bfin_spi_u8_writer(struct master_data *drv_data)
+static void bfin_spi_u8_writer(struct bfin_spi_master_data *drv_data)
{
/* clear RXS (we check for RXS inside the loop) */
bfin_spi_dummy_read(drv_data);
@@ -276,7 +279,7 @@ static void bfin_spi_u8_writer(struct master_data *drv_data)
}
}
-static void bfin_spi_u8_reader(struct master_data *drv_data)
+static void bfin_spi_u8_reader(struct bfin_spi_master_data *drv_data)
{
u16 tx_val = drv_data->cur_chip->idle_tx_val;
@@ -291,7 +294,7 @@ static void bfin_spi_u8_reader(struct master_data *drv_data)
}
}
-static void bfin_spi_u8_duplex(struct master_data *drv_data)
+static void bfin_spi_u8_duplex(struct bfin_spi_master_data *drv_data)
{
/* discard old RX data and clear RXS */
bfin_spi_dummy_read(drv_data);
@@ -304,13 +307,13 @@ static void bfin_spi_u8_duplex(struct master_data *drv_data)
}
}
-static const struct transfer_ops bfin_transfer_ops_u8 = {
+static const struct bfin_spi_transfer_ops bfin_bfin_spi_transfer_ops_u8 = {
.write = bfin_spi_u8_writer,
.read = bfin_spi_u8_reader,
.duplex = bfin_spi_u8_duplex,
};
-static void bfin_spi_u16_writer(struct master_data *drv_data)
+static void bfin_spi_u16_writer(struct bfin_spi_master_data *drv_data)
{
/* clear RXS (we check for RXS inside the loop) */
bfin_spi_dummy_read(drv_data);
@@ -327,7 +330,7 @@ static void bfin_spi_u16_writer(struct master_data *drv_data)
}
}
-static void bfin_spi_u16_reader(struct master_data *drv_data)
+static void bfin_spi_u16_reader(struct bfin_spi_master_data *drv_data)
{
u16 tx_val = drv_data->cur_chip->idle_tx_val;
@@ -343,7 +346,7 @@ static void bfin_spi_u16_reader(struct master_data *drv_data)
}
}
-static void bfin_spi_u16_duplex(struct master_data *drv_data)
+static void bfin_spi_u16_duplex(struct bfin_spi_master_data *drv_data)
{
/* discard old RX data and clear RXS */
bfin_spi_dummy_read(drv_data);
@@ -358,14 +361,14 @@ static void bfin_spi_u16_duplex(struct master_data *drv_data)
}
}
-static const struct transfer_ops bfin_transfer_ops_u16 = {
+static const struct bfin_spi_transfer_ops bfin_bfin_spi_transfer_ops_u16 = {
.write = bfin_spi_u16_writer,
.read = bfin_spi_u16_reader,
.duplex = bfin_spi_u16_duplex,
};
/* test if there is more transfer to be done */
-static void *bfin_spi_next_transfer(struct master_data *drv_data)
+static void *bfin_spi_next_transfer(struct bfin_spi_master_data *drv_data)
{
struct spi_message *msg = drv_data->cur_msg;
struct spi_transfer *trans = drv_data->cur_transfer;
@@ -384,9 +387,9 @@ static void *bfin_spi_next_transfer(struct master_data *drv_data)
* caller already set message->status;
* dma and pio irqs are blocked give finished message back
*/
-static void bfin_spi_giveback(struct master_data *drv_data)
+static void bfin_spi_giveback(struct bfin_spi_master_data *drv_data)
{
- struct slave_data *chip = drv_data->cur_chip;
+ struct bfin_spi_slave_data *chip = drv_data->cur_chip;
struct spi_transfer *last_transfer;
unsigned long flags;
struct spi_message *msg;
@@ -418,8 +421,8 @@ static void bfin_spi_giveback(struct master_data *drv_data)
/* spi data irq handler */
static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id)
{
- struct master_data *drv_data = dev_id;
- struct slave_data *chip = drv_data->cur_chip;
+ struct bfin_spi_master_data *drv_data = dev_id;
+ struct bfin_spi_slave_data *chip = drv_data->cur_chip;
struct spi_message *msg = drv_data->cur_msg;
int n_bytes = drv_data->n_bytes;
@@ -490,8 +493,8 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id)
static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id)
{
- struct master_data *drv_data = dev_id;
- struct slave_data *chip = drv_data->cur_chip;
+ struct bfin_spi_master_data *drv_data = dev_id;
+ struct bfin_spi_slave_data *chip = drv_data->cur_chip;
struct spi_message *msg = drv_data->cur_msg;
unsigned long timeout;
unsigned short dmastat = get_dma_curr_irqstat(drv_data->dma_channel);
@@ -554,11 +557,11 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id)
static void bfin_spi_pump_transfers(unsigned long data)
{
- struct master_data *drv_data = (struct master_data *)data;
+ struct bfin_spi_master_data *drv_data = (struct bfin_spi_master_data *)data;
struct spi_message *message = NULL;
struct spi_transfer *transfer = NULL;
struct spi_transfer *previous = NULL;
- struct slave_data *chip = NULL;
+ struct bfin_spi_slave_data *chip = NULL;
unsigned int bits_per_word;
u16 cr, cr_width, dma_width, dma_config;
u32 tranf_success = 1;
@@ -643,12 +646,12 @@ static void bfin_spi_pump_transfers(unsigned long data)
drv_data->n_bytes = 1;
drv_data->len = transfer->len;
cr_width = 0;
- drv_data->ops = &bfin_transfer_ops_u8;
+ drv_data->ops = &bfin_bfin_spi_transfer_ops_u8;
} else if (bits_per_word == 16) {
drv_data->n_bytes = 2;
drv_data->len = (transfer->len) >> 1;
cr_width = BIT_CTL_WORDSIZE;
- drv_data->ops = &bfin_transfer_ops_u16;
+ drv_data->ops = &bfin_bfin_spi_transfer_ops_u16;
} else {
dev_err(&drv_data->pdev->dev, "transfer: unsupported bits_per_word\n");
message->status = -EINVAL;
@@ -661,7 +664,7 @@ static void bfin_spi_pump_transfers(unsigned long data)
dev_dbg(&drv_data->pdev->dev,
"transfer: drv_data->ops is %p, chip->ops is %p, u8_ops is %p\n",
- drv_data->ops, chip->ops, &bfin_transfer_ops_u8);
+ drv_data->ops, chip->ops, &bfin_bfin_spi_transfer_ops_u8);
message->state = RUNNING_STATE;
dma_config = 0;
@@ -868,10 +871,10 @@ static void bfin_spi_pump_transfers(unsigned long data)
/* pop a msg from queue and kick off real transfer */
static void bfin_spi_pump_messages(struct work_struct *work)
{
- struct master_data *drv_data;
+ struct bfin_spi_master_data *drv_data;
unsigned long flags;
- drv_data = container_of(work, struct master_data, pump_messages);
+ drv_data = container_of(work, struct bfin_spi_master_data, pump_messages);
/* Lock queue and check for queue work */
spin_lock_irqsave(&drv_data->lock, flags);
@@ -925,7 +928,7 @@ static void bfin_spi_pump_messages(struct work_struct *work)
*/
static int bfin_spi_transfer(struct spi_device *spi, struct spi_message *msg)
{
- struct master_data *drv_data = spi_master_get_devdata(spi->master);
+ struct bfin_spi_master_data *drv_data = spi_master_get_devdata(spi->master);
unsigned long flags;
spin_lock_irqsave(&drv_data->lock, flags);
@@ -970,8 +973,8 @@ static u16 ssel[][MAX_SPI_SSEL] = {
static int bfin_spi_setup(struct spi_device *spi)
{
struct bfin5xx_spi_chip *chip_info;
- struct slave_data *chip = NULL;
- struct master_data *drv_data = spi_master_get_devdata(spi->master);
+ struct bfin_spi_slave_data *chip = NULL;
+ struct bfin_spi_master_data *drv_data = spi_master_get_devdata(spi->master);
u16 bfin_ctl_reg;
int ret = -EINVAL;
@@ -1152,8 +1155,8 @@ static int bfin_spi_setup(struct spi_device *spi)
*/
static void bfin_spi_cleanup(struct spi_device *spi)
{
- struct slave_data *chip = spi_get_ctldata(spi);
- struct master_data *drv_data = spi_master_get_devdata(spi->master);
+ struct bfin_spi_slave_data *chip = spi_get_ctldata(spi);
+ struct bfin_spi_master_data *drv_data = spi_master_get_devdata(spi->master);
if (!chip)
return;
@@ -1170,7 +1173,7 @@ static void bfin_spi_cleanup(struct spi_device *spi)
spi_set_ctldata(spi, NULL);
}
-static inline int bfin_spi_init_queue(struct master_data *drv_data)
+static inline int bfin_spi_init_queue(struct bfin_spi_master_data *drv_data)
{
INIT_LIST_HEAD(&drv_data->queue);
spin_lock_init(&drv_data->lock);
@@ -1192,7 +1195,7 @@ static inline int bfin_spi_init_queue(struct master_data *drv_data)
return 0;
}
-static inline int bfin_spi_start_queue(struct master_data *drv_data)
+static inline int bfin_spi_start_queue(struct bfin_spi_master_data *drv_data)
{
unsigned long flags;
@@ -1214,7 +1217,7 @@ static inline int bfin_spi_start_queue(struct master_data *drv_data)
return 0;
}
-static inline int bfin_spi_stop_queue(struct master_data *drv_data)
+static inline int bfin_spi_stop_queue(struct bfin_spi_master_data *drv_data)
{
unsigned long flags;
unsigned limit = 500;
@@ -1243,7 +1246,7 @@ static inline int bfin_spi_stop_queue(struct master_data *drv_data)
return status;
}
-static inline int bfin_spi_destroy_queue(struct master_data *drv_data)
+static inline int bfin_spi_destroy_queue(struct bfin_spi_master_data *drv_data)
{
int status;
@@ -1261,7 +1264,7 @@ static int __init bfin_spi_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct bfin5xx_spi_master *platform_info;
struct spi_master *master;
- struct master_data *drv_data;
+ struct bfin_spi_master_data *drv_data;
struct resource *res;
int status = 0;
@@ -1371,7 +1374,7 @@ out_error_get_res:
/* stop hardware and remove the driver */
static int __devexit bfin_spi_remove(struct platform_device *pdev)
{
- struct master_data *drv_data = platform_get_drvdata(pdev);
+ struct bfin_spi_master_data *drv_data = platform_get_drvdata(pdev);
int status = 0;
if (!drv_data)
@@ -1410,7 +1413,7 @@ static int __devexit bfin_spi_remove(struct platform_device *pdev)
#ifdef CONFIG_PM
static int bfin_spi_suspend(struct platform_device *pdev, pm_message_t state)
{
- struct master_data *drv_data = platform_get_drvdata(pdev);
+ struct bfin_spi_master_data *drv_data = platform_get_drvdata(pdev);
int status = 0;
status = bfin_spi_stop_queue(drv_data);
@@ -1431,7 +1434,7 @@ static int bfin_spi_suspend(struct platform_device *pdev, pm_message_t state)
static int bfin_spi_resume(struct platform_device *pdev)
{
- struct master_data *drv_data = platform_get_drvdata(pdev);
+ struct bfin_spi_master_data *drv_data = platform_get_drvdata(pdev);
int status = 0;
write_CTRL(drv_data, drv_data->ctrl_reg);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 04:23:39 +0000