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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/drivers/spi/atmel_spi.h
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/drivers/spi/atmel_spi.h')
-rw-r--r--roms/u-boot/drivers/spi/atmel_spi.h86
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)