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authorTom Rini <trini@konsulko.com>2018-04-07 09:15:06 -0400
committerTom Rini <trini@konsulko.com>2018-04-07 09:18:26 -0400
commit5270df2836761909864d9b548bf4b7f7f3a51484 (patch)
tree0b8f50c0c97d5870564eeffd0aa7579e58bc4c64 /drivers/spi/atmel_spi.c
parent55b255611597bcbec7bda5d09544e29580d54509 (diff)
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Revert "spi: atmel: Drop atmel_spi.h"
As we aren't quite able to convert some platforms with a very small size limit in SPL yet, we need to revert this for now. This reverts commit 37434db29be495ef41f204a97b8bf13b1418f97d. Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'drivers/spi/atmel_spi.c')
-rw-r--r--drivers/spi/atmel_spi.c97
1 files changed, 9 insertions, 88 deletions
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index bb2262cc1f..122c6d107d 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -22,90 +22,11 @@
#include <asm/gpio.h>
#endif
+#include "atmel_spi.h"
+
DECLARE_GLOBAL_DATA_PTR;
-/* Register offsets */
-#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_CSR_CPOL BIT(0)
-#define ATMEL_SPI_CSR_NCPHA BIT(1)
-#define ATMEL_SPI_CSR_CSAAT BIT(3)
-#define ATMEL_SPI_CSR_BITS(x) ((x) << 4)
-#define ATMEL_SPI_CSR_SCBR(x) ((x) << 8)
-#define ATMEL_SPI_CSR_SCBR_MAX GENMASK(7, 0)
-#define ATMEL_SPI_CSR_DLYBS(x) ((x) << 16)
-#define ATMEL_SPI_CSR_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
-
-#define MAX_CS_COUNT 4
-
-struct atmel_spi_slave {
- void *regs;
- u32 mr;
-};
+#define MAX_CS_COUNT 4
struct atmel_spi_platdata {
struct at91_spi *regs;
@@ -132,19 +53,19 @@ static int atmel_spi_claim_bus(struct udevice *dev)
u32 scbr, csrx, mode;
scbr = (priv->bus_clk_rate + freq - 1) / freq;
- if (scbr > ATMEL_SPI_CSR_SCBR_MAX)
+ if (scbr > ATMEL_SPI_CSRx_SCBR_MAX)
return -EINVAL;
if (scbr < 1)
scbr = 1;
- csrx = ATMEL_SPI_CSR_SCBR(scbr);
- csrx |= ATMEL_SPI_CSR_BITS(ATMEL_SPI_BITS_8);
+ csrx = ATMEL_SPI_CSRx_SCBR(scbr);
+ csrx |= ATMEL_SPI_CSRx_BITS(ATMEL_SPI_BITS_8);
if (!(priv->mode & SPI_CPHA))
- csrx |= ATMEL_SPI_CSR_NCPHA;
+ csrx |= ATMEL_SPI_CSRx_NCPHA;
if (priv->mode & SPI_CPOL)
- csrx |= ATMEL_SPI_CSR_CPOL;
+ csrx |= ATMEL_SPI_CSRx_CPOL;
writel(csrx, &reg_base->csr[cs]);
@@ -366,7 +287,7 @@ static int atmel_spi_probe(struct udevice *bus)
return ret;
}
- for (i = 0; i < ARRAY_SIZE(priv->cs_gpios); i++) {
+ for(i = 0; i < ARRAY_SIZE(priv->cs_gpios); i++) {
if (!dm_gpio_is_valid(&priv->cs_gpios[i]))
continue;