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spi: atmel: Drop atmel_spi.h

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atmel_spi.h has register offsets, and atmel_spi_slave
structure, move it into .c file for better readability
and drop atmel_spi.h

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Wenyou Yang <wenyouya@gmail.com>
This commit is contained in:
Jagan Teki 2018-03-14 18:46:43 +05:30 committed by Tom Rini
parent 7b09477873
commit 37434db29b
2 changed files with 88 additions and 93 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

97
drivers/spi/atmel_spi.c
View File

@ -22,11 +22,90 @@
#include <asm/gpio.h>
#endif
#include "atmel_spi.h"
DECLARE_GLOBAL_DATA_PTR;
#define MAX_CS_COUNT 4
/* 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;
};
struct atmel_spi_platdata {
struct at91_spi *regs;
@ -53,19 +132,19 @@ 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_CSRx_SCBR_MAX)
if (scbr > ATMEL_SPI_CSR_SCBR_MAX)
return -EINVAL;
if (scbr < 1)
scbr = 1;
csrx = ATMEL_SPI_CSRx_SCBR(scbr);
csrx |= ATMEL_SPI_CSRx_BITS(ATMEL_SPI_BITS_8);
csrx = ATMEL_SPI_CSR_SCBR(scbr);
csrx |= ATMEL_SPI_CSR_BITS(ATMEL_SPI_BITS_8);
if (!(priv->mode & SPI_CPHA))
csrx |= ATMEL_SPI_CSRx_NCPHA;
csrx |= ATMEL_SPI_CSR_NCPHA;
if (priv->mode & SPI_CPOL)
csrx |= ATMEL_SPI_CSRx_CPOL;
csrx |= ATMEL_SPI_CSR_CPOL;
writel(csrx, &reg_base->csr[cs]);
@ -287,7 +366,7 @@ 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;

84
drivers/spi/atmel_spi.h
View File

@ -1,84 +0,0 @@
/*
* Register definitions for the Atmel AT32/AT91 SPI Controller
*/
/* 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_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
struct atmel_spi_slave {
void *regs;
u32 mr;
};