Unverified Commit 4dbb5f6e authored by Carlos Song's avatar Carlos Song Committed by Mark Brown
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spi: imx: add 16/32 bits per word support for target PIO mode 



Enable 16/32 bits per word support for spi-imx target PIO mode.

Signed-off-by: default avatarCarlos Song <carlos.song@nxp.com>
Signed-off-by: default avatarClark Wang <xiaoning.wang@nxp.com>
Reviewed-by: default avatarFrank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20251118065012.1418279-1-carlos.song@nxp.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f2fb3f7b

drivers/spi/spi-imx.c

+19 −2
Original line number Diff line number Diff line
@@ -425,8 +425,15 @@ static void spi_imx_buf_tx_swap(struct spi_imx_data *spi_imx) 


static void mx53_ecspi_rx_target(struct spi_imx_data *spi_imx)

{

	u32 val = ioread32be(spi_imx->base + MXC_CSPIRXDATA);

	u32 val = readl(spi_imx->base + MXC_CSPIRXDATA);

#ifdef __LITTLE_ENDIAN

	unsigned int bytes_per_word = spi_imx_bytes_per_word(spi_imx->bits_per_word);



	if (bytes_per_word == 1)

		swab32s(&val);

	else if (bytes_per_word == 2)

		swahw32s(&val);

#endif

	if (spi_imx->rx_buf) {

		int n_bytes = spi_imx->target_burst % sizeof(val);
@@ -447,6 +454,9 @@ static void mx53_ecspi_tx_target(struct spi_imx_data *spi_imx) 
{

	u32 val = 0;

	int n_bytes = spi_imx->count % sizeof(val);

#ifdef __LITTLE_ENDIAN

	unsigned int bytes_per_word;

#endif



	if (!n_bytes)

		n_bytes = sizeof(val);
@@ -459,7 +469,14 @@ static void mx53_ecspi_tx_target(struct spi_imx_data *spi_imx) 


	spi_imx->count -= n_bytes;



	iowrite32be(val, spi_imx->base + MXC_CSPITXDATA);

#ifdef __LITTLE_ENDIAN

	bytes_per_word = spi_imx_bytes_per_word(spi_imx->bits_per_word);

	if (bytes_per_word == 1)

		swab32s(&val);

	else if (bytes_per_word == 2)

		swahw32s(&val);

#endif

	writel(val, spi_imx->base + MXC_CSPITXDATA);

}



/* MX51 eCSPI */