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exynos: universal_c210: Move to driver model soft_spi

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Adjust this board to use the driver model soft_spi implementation.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
This commit is contained in:
Simon Glass 2014-10-13 23:42:03 -06:00
parent 6126c8e886
commit 0043b1faa7
3 changed files with 13 additions and 61 deletions
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13
arch/arm/dts/exynos4210-universal_c210.dts
View File

@ -41,6 +41,19 @@
status = "disabled";
};
soft-spi {
compatible = "u-boot,soft-spi";
cs-gpio = <&gpio 235 0>; /* Y43 */
sclk-gpio = <&gpio 225 0>; /* Y31 */
mosi-gpio = <&gpio 227 0>; /* Y33 */
miso-gpio = <&gpio 224 0>; /* Y30 */
spi-delay-us = <1>;
#address-cells = <1>;
#size-cells = <0>;
cs@0 {
};
};
fimd@11c00000 {
compatible = "samsung,exynos-fimd";
reg = <0x11c00000 0xa4>;

52
board/samsung/universal_c210/universal.c
View File

@ -201,53 +201,6 @@ int exynos_early_init_f(void)
return 0;
}
#ifdef CONFIG_SOFT_SPI
static void soft_spi_init(void)
{
gpio_direction_output(CONFIG_SOFT_SPI_GPIO_SCLK,
CONFIG_SOFT_SPI_MODE & SPI_CPOL);
gpio_direction_output(CONFIG_SOFT_SPI_GPIO_MOSI, 1);
gpio_direction_input(CONFIG_SOFT_SPI_GPIO_MISO);
gpio_direction_output(CONFIG_SOFT_SPI_GPIO_CS,
!(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
}
void spi_cs_activate(struct spi_slave *slave)
{
gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
!(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
SPI_SCL(1);
gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH);
}
void spi_cs_deactivate(struct spi_slave *slave)
{
gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
!(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
}
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
return bus == 0 && cs == 0;
}
void universal_spi_scl(int bit)
{
gpio_set_value(CONFIG_SOFT_SPI_GPIO_SCLK, bit);
}
void universal_spi_sda(int bit)
{
gpio_set_value(CONFIG_SOFT_SPI_GPIO_MOSI, bit);
}
int universal_spi_read(void)
{
return gpio_get_value(CONFIG_SOFT_SPI_GPIO_MISO);
}
#endif
static void init_pmic_lcd(void)
{
unsigned char val;
@ -332,8 +285,6 @@ void exynos_cfg_lcd_gpio(void)
/* gpio pad configuration for LCD reset. */
gpio_request(EXYNOS4_GPIO_Y45, "lcd_reset");
gpio_cfg_pin(EXYNOS4_GPIO_Y45, S5P_GPIO_OUTPUT);
spi_init();
}
int mipi_power(void)
@ -401,9 +352,6 @@ int exynos_init(void)
break;
}
#ifdef CONFIG_SOFT_SPI
soft_spi_init();
#endif
check_hw_revision();
printf("HW Revision:\t0x%x\n", board_rev);

9
include/configs/s5pc210_universal.h
View File

@ -187,16 +187,7 @@
* SPI Settings
*/
#define CONFIG_SOFT_SPI
#define CONFIG_SOFT_SPI_MODE SPI_MODE_3
#define CONFIG_SOFT_SPI_GPIO_SCLK EXYNOS4_GPIO_Y31
#define CONFIG_SOFT_SPI_GPIO_MOSI EXYNOS4_GPIO_Y33
#define CONFIG_SOFT_SPI_GPIO_MISO EXYNOS4_GPIO_Y30
#define CONFIG_SOFT_SPI_GPIO_CS EXYNOS4_GPIO_Y43
#define SPI_DELAY udelay(1)
#define SPI_SCL(bit) universal_spi_scl(bit)
#define SPI_SDA(bit) universal_spi_sda(bit)
#define SPI_READ universal_spi_read()
#ifndef __ASSEMBLY__
void universal_spi_scl(int bit);
void universal_spi_sda(int bit);