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spi: rspi: Make more pointers const

Browse source 
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Geert Uytterhoeven 2013-12-24 10:49:32 +01:00 • committed by Mark Brown
parent c132f0949a
commit baf588f428
1 changed files with 20 additions and 17 deletions
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37
drivers/spi/spi-rspi.c
View file

@ -170,34 +170,35 @@ struct rspi_data {
unsigned dma_callbacked:1; unsigned dma_callbacked:1;
}; };
static void rspi_write8(struct rspi_data *rspi, u8 data, u16 offset) static void rspi_write8(const struct rspi_data *rspi, u8 data, u16 offset)
{ {
iowrite8(data, rspi->addr + offset); iowrite8(data, rspi->addr + offset);
} }
static void rspi_write16(struct rspi_data *rspi, u16 data, u16 offset) static void rspi_write16(const struct rspi_data *rspi, u16 data, u16 offset)
{ {
iowrite16(data, rspi->addr + offset); iowrite16(data, rspi->addr + offset);
} }
static void rspi_write32(struct rspi_data *rspi, u32 data, u16 offset) static void rspi_write32(const struct rspi_data *rspi, u32 data, u16 offset)
{ {
iowrite32(data, rspi->addr + offset); iowrite32(data, rspi->addr + offset);
} }
static u8 rspi_read8(struct rspi_data *rspi, u16 offset) static u8 rspi_read8(const struct rspi_data *rspi, u16 offset)
{ {
return ioread8(rspi->addr + offset); return ioread8(rspi->addr + offset);
} }
static u16 rspi_read16(struct rspi_data *rspi, u16 offset) static u16 rspi_read16(const struct rspi_data *rspi, u16 offset)
{ {
return ioread16(rspi->addr + offset); return ioread16(rspi->addr + offset);
} }
/* optional functions */ /* optional functions */
struct spi_ops { struct spi_ops {
int (*set_config_register)(struct rspi_data *rspi, int access_size); int (*set_config_register)(const struct rspi_data *rspi,
int access_size);
int (*send_pio)(struct rspi_data *rspi, struct spi_message *mesg, int (*send_pio)(struct rspi_data *rspi, struct spi_message *mesg,
struct spi_transfer *t); struct spi_transfer *t);
int (*receive_pio)(struct rspi_data *rspi, struct spi_message *mesg, int (*receive_pio)(struct rspi_data *rspi, struct spi_message *mesg,
@ -208,7 +209,8 @@ struct spi_ops {
/* /*
* functions for RSPI * functions for RSPI
*/ */
static int rspi_set_config_register(struct rspi_data *rspi, int access_size) static int rspi_set_config_register(const struct rspi_data *rspi,
int access_size)
{ {
int spbr; int spbr;
@ -243,7 +245,8 @@ static int rspi_set_config_register(struct rspi_data *rspi, int access_size)
/* /*
* functions for QSPI * functions for QSPI
*/ */
static int qspi_set_config_register(struct rspi_data *rspi, int access_size) static int qspi_set_config_register(const struct rspi_data *rspi,
int access_size)
{ {
u16 spcmd; u16 spcmd;
int spbr; int spbr;
@ -292,12 +295,12 @@ static int qspi_set_config_register(struct rspi_data *rspi, int access_size)
#define set_config_register(spi, n) spi->ops->set_config_register(spi, n) #define set_config_register(spi, n) spi->ops->set_config_register(spi, n)
static void rspi_enable_irq(struct rspi_data *rspi, u8 enable) static void rspi_enable_irq(const struct rspi_data *rspi, u8 enable)
{ {
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) | enable, RSPI_SPCR); rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) | enable, RSPI_SPCR);
} }
static void rspi_disable_irq(struct rspi_data *rspi, u8 disable) static void rspi_disable_irq(const struct rspi_data *rspi, u8 disable)
{ {
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) & ~disable, RSPI_SPCR); rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) & ~disable, RSPI_SPCR);
} }
@ -316,12 +319,12 @@ static int rspi_wait_for_interrupt(struct rspi_data *rspi, u8 wait_mask,
return 0; return 0;
} }
static void rspi_assert_ssl(struct rspi_data *rspi) static void rspi_assert_ssl(const struct rspi_data *rspi)
{ {
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) | SPCR_SPE, RSPI_SPCR); rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) | SPCR_SPE, RSPI_SPCR);
} }
static void rspi_negate_ssl(struct rspi_data *rspi) static void rspi_negate_ssl(const struct rspi_data *rspi)
{ {
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) & ~SPCR_SPE, RSPI_SPCR); rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) & ~SPCR_SPE, RSPI_SPCR);
} }
@ -507,7 +510,7 @@ end_nomap:
return ret; return ret;
} }
static void rspi_receive_init(struct rspi_data *rspi) static void rspi_receive_init(const struct rspi_data *rspi)
{ {
unsigned char spsr; unsigned char spsr;
@ -555,7 +558,7 @@ static int rspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg,
return 0; return 0;
} }
static void qspi_receive_init(struct rspi_data *rspi) static void qspi_receive_init(const struct rspi_data *rspi)
{ {
unsigned char spsr; unsigned char spsr;
@ -703,7 +706,7 @@ end_nomap:
return ret; return ret;
} }
static int rspi_is_dma(struct rspi_data *rspi, struct spi_transfer *t) static int rspi_is_dma(const struct rspi_data *rspi, struct spi_transfer *t)
{ {
if (t->tx_buf && rspi->chan_tx) if (t->tx_buf && rspi->chan_tx)
return 1; return 1;
@ -824,7 +827,7 @@ static irqreturn_t rspi_irq(int irq, void *_sr)
static int rspi_request_dma(struct rspi_data *rspi, static int rspi_request_dma(struct rspi_data *rspi,
struct platform_device *pdev) struct platform_device *pdev)
{ {
struct rspi_plat_data *rspi_pd = dev_get_platdata(&pdev->dev); const struct rspi_plat_data *rspi_pd = dev_get_platdata(&pdev->dev);
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
dma_cap_mask_t mask; dma_cap_mask_t mask;
struct dma_slave_config cfg; struct dma_slave_config cfg;
@ -903,7 +906,7 @@ static int rspi_probe(struct platform_device *pdev)
struct rspi_data *rspi; struct rspi_data *rspi;
int ret, irq; int ret, irq;
char clk_name[16]; char clk_name[16];
struct rspi_plat_data *rspi_pd = dev_get_platdata(&pdev->dev); const struct rspi_plat_data *rspi_pd = dev_get_platdata(&pdev->dev);
const struct spi_ops *ops; const struct spi_ops *ops;
const struct platform_device_id *id_entry = pdev->id_entry; const struct platform_device_id *id_entry = pdev->id_entry;