diff options
Diffstat (limited to 'arch/arm/mach-ux500/devices.c')
| -rwxr-xr-x | arch/arm/mach-ux500/devices.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/devices.c b/arch/arm/mach-ux500/devices.c index 711b02b45be..aab9f3e6501 100755 --- a/arch/arm/mach-ux500/devices.c +++ b/arch/arm/mach-ux500/devices.c @@ -17,6 +17,7 @@ #include <linux/gpio.h> #include <linux/usb/musb.h> #include <linux/dma-mapping.h> +#include <linux/input.h> #include <asm/irq.h> @@ -43,6 +44,7 @@ #include <mach/tc35892.h> #include <mach/uart.h> #include <mach/setup.h> +#include <mach/kpd.h> void __init u8500_register_device(struct platform_device *dev, void *data) { @@ -726,7 +728,237 @@ struct amba_device ux500_uart2_device = { }; #endif +#ifdef CONFIG_KEYPAD_SKE + +#define KEYPAD_DEBOUNCE_PERIOD_SKE 64 +#define ROW_PIN_I0 164 +#define ROW_PIN_I3 161 +#define ROW_PIN_I4 156 +#define ROW_PIN_I7 153 +#define COL_PIN_O0 168 +#define COL_PIN_O3 165 +#define COL_PIN_O4 160 +#define COL_PIN_O7 157 + +/* ske_set_gpio_column - Disables Pull up + * @start: start column pin + * @end: end column pin + * This function disables the pull up for output pins +*/ +int ske_set_gpio_column(int start, int end) +{ + int i; + int status = 0; + + for (i = start; i <= end; i++) { + status = gpio_request(i, "ske"); + if (status < 0) { + printk(KERN_ERR "%s: gpio request failed \n", __func__); + return status; + } + status = nmk_gpio_set_pull(i, NMK_GPIO_PULL_UP); + if (status < 0) { + printk(KERN_ERR "%s: gpio set pull failed \n", __func__); + return status; + } + gpio_free(i); + } + return status; +} +/* ske_set_gpio_row - enable the input pins + * @start: start row pin + * @end: end row pin + * This function enable the input pins +*/ +int ske_set_gpio_row(int start, int end) +{ + int i = 0; + int status = 0; + + for (i = start; i <= end; i++) { + status = gpio_request(i, "ske"); + if (status < 0) { + printk(KERN_ERR "%s: gpio request failed \n", __func__); + return status; + } + status = gpio_direction_output(i, 1); + if (status < 0) { + printk(KERN_ERR "%s: gpio direction failed \n", __func__); + gpio_free(i); + return status; + } + gpio_set_value(i, 1); + gpio_free(i); + } + return status; +} +/** + * ske_kp_init - enable the gpio configuration + * @kp: keypad device data pointer + * + * This function is used to enable the gpio configuration for keypad + * + */ +static int ske_kp_init(struct keypad_t *kp) +{ + int ret; + ret = ske_set_gpio_row(ROW_PIN_I3, ROW_PIN_I0); + if (ret < 0) + goto err; + ret = ske_set_gpio_row(ROW_PIN_I7, ROW_PIN_I4); + if (ret < 0) + goto err; + ret = ske_set_gpio_column(COL_PIN_O3, COL_PIN_O0); + if (ret < 0) + goto err; + ret = ske_set_gpio_column(COL_PIN_O7, COL_PIN_O4); + if (ret < 0) + goto err; + ret = stm_gpio_altfuncenable(GPIO_ALT_KEYPAD); + if (ret) + goto err; + return 0; +err: + printk(KERN_ERR "%s: failed \n", __func__); + return ret; +} +/** + * ske_kp_exit - disable the gpio configuration + * @kp: keypad device data pointer + * + * This function is used to disable the gpio configuration for keypad + * + */ +static int ske_kp_exit(struct keypad_t *kp) +{ + stm_gpio_altfuncdisable(GPIO_ALT_KEYPAD); + return 0; +} + +/* + * Initializes the key scan table (lookup table) as per pre-defined the scan + * codes to be passed to upper layer with respective key codes + */ +u8 const kpd_lookup_tbl[MAX_KPROW][MAX_KPROW] = { + { + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_MENU, + KEY_RESERVED, + KEY_RESERVED + }, + { + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_3, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED + }, + { + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_END, + KEY_RESERVED, + KEY_RESERVED + }, + { + KEY_RESERVED, + KEY_RESERVED, + KEY_7, + KEY_DOWN, + KEY_UP, + KEY_VOLUMEDOWN, + KEY_RESERVED, + KEY_RESERVED + }, + { + KEY_RESERVED, + KEY_4, + KEY_VOLUMEUP, + KEY_LEFT, + KEY_RESERVED, + KEY_0, + KEY_RESERVED, + KEY_RESERVED + }, + { + KEY_9, + KEY_RESERVED, + KEY_RIGHT, + KEY_RESERVED, + KEY_RESERVED, + KEY_1, + KEY_RESERVED, + KEY_RESERVED + }, + { + KEY_RESERVED, + KEY_RESERVED, + KEY_BACK, + KEY_RESERVED, + KEY_SEND, + KEY_RESERVED, + KEY_RESERVED, + KEY_2 + }, + { + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_ENTER, + KEY_RESERVED + } +}; + +static struct keypad_device keypad_board = { + .init = ske_kp_init, + .exit = ske_kp_exit, + .kcode_tbl = (u8 *) kpd_lookup_tbl, + .krow = MAX_KPROW, + .kcol = MAX_KPCOL, + .debounce_period = KEYPAD_DEBOUNCE_PERIOD_SKE, + .irqtype = 0, + .int_status = KP_INT_DISABLED, + .int_line_behaviour = INT_LINE_NOTSET, +}; + +struct resource keypad_resources[] = { + [0] = { + .start = U8500_SKE_BASE, + .end = U8500_SKE_BASE + SZ_4K - 1, + .name = "ux500_ske_base", + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_SKE_KP, + .end = IRQ_SKE_KP, + .name = "ux500_ske_irq", + .flags = IORESOURCE_IRQ, + }, +}; +struct platform_device ske_keypad_device = { + .name = "ske-kp", + .id = -1, + .dev = { + .platform_data = &keypad_board, + }, + .num_resources = ARRAY_SIZE(keypad_resources), + .resource = keypad_resources, +}; +#endif #if defined(CONFIG_U5500_MLOADER_HELPER) struct platform_device mloader_helper_device = { .name = "mloader_helper", |