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spi: imx: add 16/32 bits per word support for target PIO mode

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

Signed-off-by: Carlos Song <carlos.song@nxp.com>
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20251118065012.1418279-1-carlos.song@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Carlos Song
2025-11-18 14:50:12 +08:00
committed by Mark Brown
parent f2fb3f7bdf
commit 4dbb5f6e1b
1 changed files with 19 additions and 2 deletions
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21
drivers/spi/spi-imx.c
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@@ -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 */