Unverified Commit 304d3436 authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Mark Brown
Browse files

spi: add flags parameter to txrx_word function pointers 



Add the capability to specify the flag parameter used in
bitbang_txrx_be_cpha{0,1} through the txrx_word function pointers of
spi_bitbang data structure. That feature will be used to add spi-3wire
support to the spi-gpio controller

Signed-off-by: default avatarLorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 5ba155a4

drivers/spi/spi-ath79.c

+1 −1
Original line number Diff line number Diff line
@@ -176,7 +176,7 @@ static void ath79_spi_cleanup(struct spi_device *spi) 
}



static u32 ath79_spi_txrx_mode0(struct spi_device *spi, unsigned int nsecs,

			       u32 word, u8 bits)

			       u32 word, u8 bits, unsigned flags)

{

	struct ath79_spi *sp = ath79_spidev_to_sp(spi);

	u32 ioc = sp->ioc_base;

drivers/spi/spi-bitbang.c

+21 −13
Original line number Diff line number Diff line
@@ -49,22 +49,26 @@ 
struct spi_bitbang_cs {

	unsigned	nsecs;	/* (clock cycle time)/2 */

	u32		(*txrx_word)(struct spi_device *spi, unsigned nsecs,

					u32 word, u8 bits);

					u32 word, u8 bits, unsigned flags);

	unsigned	(*txrx_bufs)(struct spi_device *,

					u32 (*txrx_word)(

						struct spi_device *spi,

						unsigned nsecs,

						u32 word, u8 bits),

					unsigned, struct spi_transfer *);

						u32 word, u8 bits,

						unsigned flags),

					unsigned, struct spi_transfer *,

					unsigned);

};



static unsigned bitbang_txrx_8(

	struct spi_device	*spi,

	u32			(*txrx_word)(struct spi_device *spi,

					unsigned nsecs,

					u32 word, u8 bits),

					u32 word, u8 bits,

					unsigned flags),

	unsigned		ns,

	struct spi_transfer	*t

	struct spi_transfer	*t,

	unsigned flags

) {

	unsigned		bits = t->bits_per_word;

	unsigned		count = t->len;
@@ -76,7 +80,7 @@ static unsigned bitbang_txrx_8( 


		if (tx)

			word = *tx++;

		word = txrx_word(spi, ns, word, bits);

		word = txrx_word(spi, ns, word, bits, flags);

		if (rx)

			*rx++ = word;

		count -= 1;
@@ -88,9 +92,11 @@ static unsigned bitbang_txrx_16( 
	struct spi_device	*spi,

	u32			(*txrx_word)(struct spi_device *spi,

					unsigned nsecs,

					u32 word, u8 bits),

					u32 word, u8 bits,

					unsigned flags),

	unsigned		ns,

	struct spi_transfer	*t

	struct spi_transfer	*t,

	unsigned flags

) {

	unsigned		bits = t->bits_per_word;

	unsigned		count = t->len;
@@ -102,7 +108,7 @@ static unsigned bitbang_txrx_16( 


		if (tx)

			word = *tx++;

		word = txrx_word(spi, ns, word, bits);

		word = txrx_word(spi, ns, word, bits, flags);

		if (rx)

			*rx++ = word;

		count -= 2;
@@ -114,9 +120,11 @@ static unsigned bitbang_txrx_32( 
	struct spi_device	*spi,

	u32			(*txrx_word)(struct spi_device *spi,

					unsigned nsecs,

					u32 word, u8 bits),

					u32 word, u8 bits,

					unsigned flags),

	unsigned		ns,

	struct spi_transfer	*t

	struct spi_transfer	*t,

	unsigned flags

) {

	unsigned		bits = t->bits_per_word;

	unsigned		count = t->len;
@@ -128,7 +136,7 @@ static unsigned bitbang_txrx_32( 


		if (tx)

			word = *tx++;

		word = txrx_word(spi, ns, word, bits);

		word = txrx_word(spi, ns, word, bits, flags);

		if (rx)

			*rx++ = word;

		count -= 4;
@@ -236,7 +244,7 @@ static int spi_bitbang_bufs(struct spi_device *spi, struct spi_transfer *t) 
	struct spi_bitbang_cs	*cs = spi->controller_state;

	unsigned		nsecs = cs->nsecs;



	return cs->txrx_bufs(spi, cs->txrx_word, nsecs, t);

	return cs->txrx_bufs(spi, cs->txrx_word, nsecs, t, 0);

}



/*----------------------------------------------------------------------*/

drivers/spi/spi-butterfly.c

+2 −2
Original line number Diff line number Diff line
@@ -144,9 +144,9 @@ static void butterfly_chipselect(struct spi_device *spi, int value) 


static u32

butterfly_txrx_word_mode0(struct spi_device *spi, unsigned nsecs, u32 word,

			  u8 bits)

			  u8 bits, unsigned flags)

{

	return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);

	return bitbang_txrx_be_cpha0(spi, nsecs, 0, flags, word, bits);

}



/*----------------------------------------------------------------------*/

drivers/spi/spi-gpio.c

+16 −16
Original line number Diff line number Diff line
@@ -149,27 +149,27 @@ static inline int getmiso(const struct spi_device *spi) 
 */



static u32 spi_gpio_txrx_word_mode0(struct spi_device *spi,

		unsigned nsecs, u32 word, u8 bits)

		unsigned nsecs, u32 word, u8 bits, unsigned flags)

{

	return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);

	return bitbang_txrx_be_cpha0(spi, nsecs, 0, flags, word, bits);

}



static u32 spi_gpio_txrx_word_mode1(struct spi_device *spi,

		unsigned nsecs, u32 word, u8 bits)

		unsigned nsecs, u32 word, u8 bits, unsigned flags)

{

	return bitbang_txrx_be_cpha1(spi, nsecs, 0, 0, word, bits);

	return bitbang_txrx_be_cpha1(spi, nsecs, 0, flags, word, bits);

}



static u32 spi_gpio_txrx_word_mode2(struct spi_device *spi,

		unsigned nsecs, u32 word, u8 bits)

		unsigned nsecs, u32 word, u8 bits, unsigned flags)

{

	return bitbang_txrx_be_cpha0(spi, nsecs, 1, 0, word, bits);

	return bitbang_txrx_be_cpha0(spi, nsecs, 1, flags, word, bits);

}



static u32 spi_gpio_txrx_word_mode3(struct spi_device *spi,

		unsigned nsecs, u32 word, u8 bits)

		unsigned nsecs, u32 word, u8 bits, unsigned flags)

{

	return bitbang_txrx_be_cpha1(spi, nsecs, 1, 0, word, bits);

	return bitbang_txrx_be_cpha1(spi, nsecs, 1, flags, word, bits);

}



/*
@@ -183,30 +183,30 @@ static u32 spi_gpio_txrx_word_mode3(struct spi_device *spi, 
 */



static u32 spi_gpio_spec_txrx_word_mode0(struct spi_device *spi,

		unsigned nsecs, u32 word, u8 bits)

		unsigned nsecs, u32 word, u8 bits, unsigned flags)

{

	unsigned flags = spi->master->flags;

	flags = spi->master->flags;

	return bitbang_txrx_be_cpha0(spi, nsecs, 0, flags, word, bits);

}



static u32 spi_gpio_spec_txrx_word_mode1(struct spi_device *spi,

		unsigned nsecs, u32 word, u8 bits)

		unsigned nsecs, u32 word, u8 bits, unsigned flags)

{

	unsigned flags = spi->master->flags;

	flags = spi->master->flags;

	return bitbang_txrx_be_cpha1(spi, nsecs, 0, flags, word, bits);

}



static u32 spi_gpio_spec_txrx_word_mode2(struct spi_device *spi,

		unsigned nsecs, u32 word, u8 bits)

		unsigned nsecs, u32 word, u8 bits, unsigned flags)

{

	unsigned flags = spi->master->flags;

	flags = spi->master->flags;

	return bitbang_txrx_be_cpha0(spi, nsecs, 1, flags, word, bits);

}



static u32 spi_gpio_spec_txrx_word_mode3(struct spi_device *spi,

		unsigned nsecs, u32 word, u8 bits)

		unsigned nsecs, u32 word, u8 bits, unsigned flags)

{

	unsigned flags = spi->master->flags;

	flags = spi->master->flags;

	return bitbang_txrx_be_cpha1(spi, nsecs, 1, flags, word, bits);

}

drivers/spi/spi-lm70llp.c

+3 −2
Original line number Diff line number Diff line
@@ -188,9 +188,10 @@ static void lm70_chipselect(struct spi_device *spi, int value) 
/*

 * Our actual bitbanger routine.

 */

static u32 lm70_txrx(struct spi_device *spi, unsigned nsecs, u32 word, u8 bits)

static u32 lm70_txrx(struct spi_device *spi, unsigned nsecs, u32 word, u8 bits,

		     unsigned flags)

{

	return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);

	return bitbang_txrx_be_cpha0(spi, nsecs, 0, flags, word, bits);

}



static void spi_lm70llp_attach(struct parport *p)

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