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author | 2023-10-10 14:33:42 +0000 | |
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committer | 2023-10-10 14:33:42 +0000 | |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/drivers/spi/atmel_spi.h | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/drivers/spi/atmel_spi.h')
-rw-r--r-- | roms/u-boot/drivers/spi/atmel_spi.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/spi/atmel_spi.h b/roms/u-boot/drivers/spi/atmel_spi.h new file mode 100644 index 000000000..9663cca5e --- /dev/null +++ b/roms/u-boot/drivers/spi/atmel_spi.h @@ -0,0 +1,86 @@ +/* + * Register definitions for the Atmel AT32/AT91 SPI Controller + */ + +/* Register offsets */ +#include <linux/bitops.h> +#define ATMEL_SPI_CR 0x0000 +#define ATMEL_SPI_MR 0x0004 +#define ATMEL_SPI_RDR 0x0008 +#define ATMEL_SPI_TDR 0x000c +#define ATMEL_SPI_SR 0x0010 +#define ATMEL_SPI_IER 0x0014 +#define ATMEL_SPI_IDR 0x0018 +#define ATMEL_SPI_IMR 0x001c +#define ATMEL_SPI_CSR(x) (0x0030 + 4 * (x)) +#define ATMEL_SPI_VERSION 0x00fc + +/* Bits in CR */ +#define ATMEL_SPI_CR_SPIEN BIT(0) +#define ATMEL_SPI_CR_SPIDIS BIT(1) +#define ATMEL_SPI_CR_SWRST BIT(7) +#define ATMEL_SPI_CR_LASTXFER BIT(24) + +/* Bits in MR */ +#define ATMEL_SPI_MR_MSTR BIT(0) +#define ATMEL_SPI_MR_PS BIT(1) +#define ATMEL_SPI_MR_PCSDEC BIT(2) +#define ATMEL_SPI_MR_FDIV BIT(3) +#define ATMEL_SPI_MR_MODFDIS BIT(4) +#define ATMEL_SPI_MR_WDRBT BIT(5) +#define ATMEL_SPI_MR_LLB BIT(7) +#define ATMEL_SPI_MR_PCS(x) (((x) & 15) << 16) +#define ATMEL_SPI_MR_DLYBCS(x) ((x) << 24) + +/* Bits in RDR */ +#define ATMEL_SPI_RDR_RD(x) (x) +#define ATMEL_SPI_RDR_PCS(x) ((x) << 16) + +/* Bits in TDR */ +#define ATMEL_SPI_TDR_TD(x) (x) +#define ATMEL_SPI_TDR_PCS(x) ((x) << 16) +#define ATMEL_SPI_TDR_LASTXFER BIT(24) + +/* Bits in SR/IER/IDR/IMR */ +#define ATMEL_SPI_SR_RDRF BIT(0) +#define ATMEL_SPI_SR_TDRE BIT(1) +#define ATMEL_SPI_SR_MODF BIT(2) +#define ATMEL_SPI_SR_OVRES BIT(3) +#define ATMEL_SPI_SR_ENDRX BIT(4) +#define ATMEL_SPI_SR_ENDTX BIT(5) +#define ATMEL_SPI_SR_RXBUFF BIT(6) +#define ATMEL_SPI_SR_TXBUFE BIT(7) +#define ATMEL_SPI_SR_NSSR BIT(8) +#define ATMEL_SPI_SR_TXEMPTY BIT(9) +#define ATMEL_SPI_SR_SPIENS BIT(16) + +/* Bits in CSRx */ +#define ATMEL_SPI_CSRx_CPOL BIT(0) +#define ATMEL_SPI_CSRx_NCPHA BIT(1) +#define ATMEL_SPI_CSRx_CSAAT BIT(3) +#define ATMEL_SPI_CSRx_BITS(x) ((x) << 4) +#define ATMEL_SPI_CSRx_SCBR(x) ((x) << 8) +#define ATMEL_SPI_CSRx_SCBR_MAX GENMASK(7, 0) +#define ATMEL_SPI_CSRx_DLYBS(x) ((x) << 16) +#define ATMEL_SPI_CSRx_DLYBCT(x) ((x) << 24) + +/* Bits in VERSION */ +#define ATMEL_SPI_VERSION_REV(x) ((x) & 0xfff) +#define ATMEL_SPI_VERSION_MFN(x) ((x) << 16) + +/* Constants for CSRx:BITS */ +#define ATMEL_SPI_BITS_8 0 +#define ATMEL_SPI_BITS_9 1 +#define ATMEL_SPI_BITS_10 2 +#define ATMEL_SPI_BITS_11 3 +#define ATMEL_SPI_BITS_12 4 +#define ATMEL_SPI_BITS_13 5 +#define ATMEL_SPI_BITS_14 6 +#define ATMEL_SPI_BITS_15 7 +#define ATMEL_SPI_BITS_16 8 + +/* Register access macros */ +#define spi_readl(as, reg) \ + readl(as->regs + ATMEL_SPI_##reg) +#define spi_writel(as, reg, value) \ + writel(value, as->regs + ATMEL_SPI_##reg) |