[U-Boot] [PATCH 13/14] spi: atmel: Drop atmel_spi.h
Wenyou Yang
wenyouya at gmail.com
Wed Mar 21 04:11:18 UTC 2018
On 3/14/2018 9:16 PM, Jagan Teki wrote:
> 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 at amarulasolutions.com>
Indeed.
Acked-by: Wenyou Yang <wenyouya at gmail.com>
> ---
> drivers/spi/atmel_spi.c | 97 ++++++++++++++++++++++++++++++++++++++++++++-----
> drivers/spi/atmel_spi.h | 84 ------------------------------------------
> 2 files changed, 88 insertions(+), 93 deletions(-)
> delete mode 100644 drivers/spi/atmel_spi.h
>
> diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
> index 122c6d107d..bb2262cc1f 100644
> --- a/drivers/spi/atmel_spi.c
> +++ b/drivers/spi/atmel_spi.c
> @@ -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, ®_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;
>
> diff --git a/drivers/spi/atmel_spi.h b/drivers/spi/atmel_spi.h
> deleted file mode 100644
> index 685eeed99e..0000000000
> --- a/drivers/spi/atmel_spi.h
> +++ /dev/null
> @@ -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;
> -};
More information about the U-Boot
mailing list