lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

davinci: add spi devices on tnetv107x evm

Browse Source 
This patch adds definitions for spi devices on the tnetv107x evm platform.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Cyril Chemparathy
2011-01-18 19:21:41 +00:00
committed by Kevin Hilman
parent 08e0e1d5ae
commit f6e5306ecf
1 changed files with 43 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
arch/arm/mach-davinci/board-tnetv107x-evm.c
View File

@@ -25,6 +25,7 @@
#include <linux/mtd/partitions.h> #include <linux/mtd/partitions.h>
#include <linux/input.h> #include <linux/input.h>
#include <linux/input/matrix_keypad.h> #include <linux/input/matrix_keypad.h>
#include <linux/spi/spi.h>
#include <asm/mach/arch.h> #include <asm/mach/arch.h>
#include <asm/mach-types.h> #include <asm/mach-types.h>
@@ -37,6 +38,7 @@
#define EVM_MMC_WP_GPIO 21 #define EVM_MMC_WP_GPIO 21
#define EVM_MMC_CD_GPIO 24 #define EVM_MMC_CD_GPIO 24
#define EVM_SPI_CS_GPIO 54
static int initialize_gpio(int gpio, char *desc) static int initialize_gpio(int gpio, char *desc)
{ {
@@ -202,9 +204,45 @@ static struct matrix_keypad_platform_data keypad_config = {
.no_autorepeat = 0, .no_autorepeat = 0,
}; };
static void spi_select_device(int cs)
{
static int gpio;
if (!gpio) {
int ret;
ret = gpio_request(EVM_SPI_CS_GPIO, "spi chipsel");
if (ret < 0) {
pr_err("cannot open spi chipsel gpio\n");
gpio = -ENOSYS;
return;
} else {
gpio = EVM_SPI_CS_GPIO;
gpio_direction_output(gpio, 0);
}
}
if (gpio < 0)
return;
return gpio_set_value(gpio, cs ? 1 : 0);
}
static struct ti_ssp_spi_data spi_master_data = {
.num_cs = 2,
.select = spi_select_device,
.iosel = SSP_PIN_SEL(0, SSP_CLOCK) | SSP_PIN_SEL(1, SSP_DATA) |
SSP_PIN_SEL(2, SSP_CHIPSEL) | SSP_PIN_SEL(3, SSP_IN) |
SSP_INPUT_SEL(3),
};
static struct ti_ssp_data ssp_config = { static struct ti_ssp_data ssp_config = {
.out_clock = 250 * 1000, .out_clock = 250 * 1000,
.dev_data = { .dev_data = {
[1] = {
.dev_name = "ti-ssp-spi",
.pdata = &spi_master_data,
.pdata_size = sizeof(spi_master_data),
},
}, },
}; };
@@ -216,6 +254,9 @@ static struct tnetv107x_device_info evm_device_info __initconst = {
.ssp_config = &ssp_config, .ssp_config = &ssp_config,
}; };
static struct spi_board_info spi_info[] __initconst = {
};
static __init void tnetv107x_evm_board_init(void) static __init void tnetv107x_evm_board_init(void)
{ {
davinci_cfg_reg_list(sdio1_pins); davinci_cfg_reg_list(sdio1_pins);
@@ -223,6 +264,8 @@ static __init void tnetv107x_evm_board_init(void)
davinci_cfg_reg_list(ssp_pins); davinci_cfg_reg_list(ssp_pins);
tnetv107x_devices_init(&evm_device_info); tnetv107x_devices_init(&evm_device_info);
spi_register_board_info(spi_info, ARRAY_SIZE(spi_info));
} }
#ifdef CONFIG_SERIAL_8250_CONSOLE #ifdef CONFIG_SERIAL_8250_CONSOLE