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Commit baf588f4 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Mark Brown
Browse files

spi: rspi: Make more pointers const 



Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent c132f094

drivers/spi/spi-rspi.c

+20 −17
Original line number Diff line number Diff line
@@ -170,34 +170,35 @@ struct rspi_data { 
	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);

}



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);

}



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);

}



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);

}



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);

}



/* optional functions */

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,

			struct spi_transfer *t);

	int (*receive_pio)(struct rspi_data *rspi, struct spi_message *mesg,
@@ -208,7 +209,8 @@ struct spi_ops { 
/*

 * 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;
@@ -243,7 +245,8 @@ static int rspi_set_config_register(struct rspi_data *rspi, int access_size) 
/*

 * 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;

	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)



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);

}



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);

}
@@ -316,12 +319,12 @@ static int rspi_wait_for_interrupt(struct rspi_data *rspi, u8 wait_mask, 
	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);

}



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);

}
@@ -507,7 +510,7 @@ static int rspi_send_dma(struct rspi_data *rspi, struct spi_transfer *t) 
	return ret;

}



static void rspi_receive_init(struct rspi_data *rspi)

static void rspi_receive_init(const struct rspi_data *rspi)

{

	unsigned char spsr;
@@ -555,7 +558,7 @@ static int rspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg, 
	return 0;

}



static void qspi_receive_init(struct rspi_data *rspi)

static void qspi_receive_init(const struct rspi_data *rspi)

{

	unsigned char spsr;
@@ -703,7 +706,7 @@ static int rspi_receive_dma(struct rspi_data *rspi, struct spi_transfer *t) 
	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)

		return 1;
@@ -824,7 +827,7 @@ static irqreturn_t rspi_irq(int irq, void *_sr) 
static int rspi_request_dma(struct rspi_data *rspi,

				      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);

	dma_cap_mask_t mask;

	struct dma_slave_config cfg;
@@ -903,7 +906,7 @@ static int rspi_probe(struct platform_device *pdev) 
	struct rspi_data *rspi;

	int ret, irq;

	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 platform_device_id *id_entry = pdev->id_entry;