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intel/apollolake: Add helper routine for spi reg read

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BUG=chrome-os-partner:54563

Change-Id: I56bc6b5292aec676103a436048abee8577edd961
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/15268
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Furquan Shaikh
2016-06-19 23:20:08 -07:00
parent d3f4c5be8b
commit bdcda710a7
2 changed files with 8 additions and 0 deletions
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2
src/soc/intel/apollolake/include/soc/spi.h
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@@ -75,4 +75,6 @@
*/ */
int spi_read_status(uint8_t *status); int spi_read_status(uint8_t *status);
/* Read SPI controller register. */
uint32_t spi_ctrlr_reg_read(uint16_t reg);
#endif #endif

6
src/soc/intel/apollolake/spi.c
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@@ -70,6 +70,12 @@ static uint32_t _spi_ctrlr_reg_read(struct spi_ctx *ctx, uint16_t reg)
return read32((void *)addr); return read32((void *)addr);
} }
uint32_t spi_ctrlr_reg_read(uint16_t reg)
{
BOILERPLATE_CREATE_CTX(ctx);
return _spi_ctrlr_reg_read(ctx, reg);
}
/* Write to register in the SPI controller. 'reg' is the register offset. */ /* Write to register in the SPI controller. 'reg' is the register offset. */
static void _spi_ctrlr_reg_write(struct spi_ctx *ctx, uint16_t reg, static void _spi_ctrlr_reg_write(struct spi_ctx *ctx, uint16_t reg,
uint32_t val) uint32_t val)