Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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: 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>
authored by
Carlos Song
and committed by
Mark Brown
4dbb5f6e
f2fb3f7b
+19
-2
+19
-2
drivers/spi/spi-imx.c
+19
-2
drivers/spi/spi-imx.c
···
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static void mx53_ecspi_rx_target(struct spi_imx_data *spi_imx)
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{
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-
u32 val = ioread32be(spi_imx->base + MXC_CSPIRXDATA);
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+
u32 val = readl(spi_imx->base + MXC_CSPIRXDATA);
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#ifdef __LITTLE_ENDIAN
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unsigned int bytes_per_word = spi_imx_bytes_per_word(spi_imx->bits_per_word);
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if (bytes_per_word == 1)
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swab32s(&val);
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else if (bytes_per_word == 2)
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swahw32s(&val);
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#endif
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if (spi_imx->rx_buf) {
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int n_bytes = spi_imx->target_burst % sizeof(val);
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···
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{
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u32 val = 0;
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int n_bytes = spi_imx->count % sizeof(val);
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#ifdef __LITTLE_ENDIAN
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unsigned int bytes_per_word;
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#endif
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if (!n_bytes)
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n_bytes = sizeof(val);
···
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spi_imx->count -= n_bytes;
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iowrite32be(val, spi_imx->base + MXC_CSPITXDATA);
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#ifdef __LITTLE_ENDIAN
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bytes_per_word = spi_imx_bytes_per_word(spi_imx->bits_per_word);
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if (bytes_per_word == 1)
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swab32s(&val);
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else if (bytes_per_word == 2)
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swahw32s(&val);
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#endif
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writel(val, spi_imx->base + MXC_CSPITXDATA);
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}
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/* MX51 eCSPI */