diff options
Diffstat (limited to 'drivers/mfd/vexpress-sysreg.c')
| -rw-r--r-- | drivers/mfd/vexpress-sysreg.c | 83 |
1 files changed, 61 insertions, 22 deletions
diff --git a/drivers/mfd/vexpress-sysreg.c b/drivers/mfd/vexpress-sysreg.c index 558c2928f261..bf75e967a1f3 100644 --- a/drivers/mfd/vexpress-sysreg.c +++ b/drivers/mfd/vexpress-sysreg.c @@ -49,6 +49,8 @@ #define SYS_ID_HBI_SHIFT 16 #define SYS_PROCIDx_HBI_SHIFT 0 +#define SYS_LED_LED(n) (1 << (n)) + #define SYS_MCI_CARDIN (1 << 0) #define SYS_MCI_WPROT (1 << 1) @@ -336,34 +338,40 @@ void __init vexpress_sysreg_early_init(void __iomem *base) void __init vexpress_sysreg_of_early_init(void) { - struct device_node *node = of_find_compatible_node(NULL, NULL, - "arm,vexpress-sysreg"); + struct device_node *node; + + if (vexpress_sysreg_base) + return; + node = of_find_compatible_node(NULL, NULL, "arm,vexpress-sysreg"); if (node) { vexpress_sysreg_base = of_iomap(node, 0); vexpress_sysreg_setup(node); - } else { - pr_info("vexpress-sysreg: No Device Tree node found."); } } +#define VEXPRESS_SYSREG_GPIO(_name, _reg, _value) \ + [VEXPRESS_GPIO_##_name] = { \ + .reg = _reg, \ + .value = _reg##_##_value, \ + } + static struct vexpress_sysreg_gpio { unsigned long reg; u32 value; } vexpress_sysreg_gpios[] = { - [VEXPRESS_GPIO_MMC_CARDIN] = { - .reg = SYS_MCI, - .value = SYS_MCI_CARDIN, - }, - [VEXPRESS_GPIO_MMC_WPROT] = { - .reg = SYS_MCI, - .value = SYS_MCI_WPROT, - }, - [VEXPRESS_GPIO_FLASH_WPn] = { - .reg = SYS_FLASH, - .value = SYS_FLASH_WPn, - }, + VEXPRESS_SYSREG_GPIO(MMC_CARDIN, SYS_MCI, CARDIN), + VEXPRESS_SYSREG_GPIO(MMC_WPROT, SYS_MCI, WPROT), + VEXPRESS_SYSREG_GPIO(FLASH_WPn, SYS_FLASH, WPn), + VEXPRESS_SYSREG_GPIO(LED0, SYS_LED, LED(0)), + VEXPRESS_SYSREG_GPIO(LED1, SYS_LED, LED(1)), + VEXPRESS_SYSREG_GPIO(LED2, SYS_LED, LED(2)), + VEXPRESS_SYSREG_GPIO(LED3, SYS_LED, LED(3)), + VEXPRESS_SYSREG_GPIO(LED4, SYS_LED, LED(4)), + VEXPRESS_SYSREG_GPIO(LED5, SYS_LED, LED(5)), + VEXPRESS_SYSREG_GPIO(LED6, SYS_LED, LED(6)), + VEXPRESS_SYSREG_GPIO(LED7, SYS_LED, LED(7)), }; static int vexpress_sysreg_gpio_direction_input(struct gpio_chip *chip, @@ -372,12 +380,6 @@ static int vexpress_sysreg_gpio_direction_input(struct gpio_chip *chip, return 0; } -static int vexpress_sysreg_gpio_direction_output(struct gpio_chip *chip, - unsigned offset, int value) -{ - return 0; -} - static int vexpress_sysreg_gpio_get(struct gpio_chip *chip, unsigned offset) { @@ -401,6 +403,14 @@ static void vexpress_sysreg_gpio_set(struct gpio_chip *chip, writel(reg_value, vexpress_sysreg_base + gpio->reg); } +static int vexpress_sysreg_gpio_direction_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + vexpress_sysreg_gpio_set(chip, offset, value); + + return 0; +} + static struct gpio_chip vexpress_sysreg_gpio_chip = { .label = "vexpress-sysreg", .direction_input = vexpress_sysreg_gpio_direction_input, @@ -412,6 +422,30 @@ static struct gpio_chip vexpress_sysreg_gpio_chip = { }; +#define VEXPRESS_SYSREG_GREEN_LED(_name, _default_trigger, _gpio) \ + { \ + .name = "v2m:green:"_name, \ + .default_trigger = _default_trigger, \ + .gpio = VEXPRESS_GPIO_##_gpio, \ + } + +struct gpio_led vexpress_sysreg_leds[] = { + VEXPRESS_SYSREG_GREEN_LED("user1", "heartbeat", LED0), + VEXPRESS_SYSREG_GREEN_LED("user2", "mmc0", LED1), + VEXPRESS_SYSREG_GREEN_LED("user3", "cpu0", LED2), + VEXPRESS_SYSREG_GREEN_LED("user4", "cpu1", LED3), + VEXPRESS_SYSREG_GREEN_LED("user5", "cpu2", LED4), + VEXPRESS_SYSREG_GREEN_LED("user6", "cpu3", LED5), + VEXPRESS_SYSREG_GREEN_LED("user7", "cpu4", LED6), + VEXPRESS_SYSREG_GREEN_LED("user8", "cpu5", LED7), +}; + +struct gpio_led_platform_data vexpress_sysreg_leds_pdata = { + .num_leds = ARRAY_SIZE(vexpress_sysreg_leds), + .leds = vexpress_sysreg_leds, +}; + + static ssize_t vexpress_sysreg_sys_id_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -456,6 +490,10 @@ static int vexpress_sysreg_probe(struct platform_device *pdev) return err; } + platform_device_register_data(vexpress_sysreg_dev, "leds-gpio", + PLATFORM_DEVID_AUTO, &vexpress_sysreg_leds_pdata, + sizeof(vexpress_sysreg_leds_pdata)); + vexpress_sysreg_dev = &pdev->dev; device_create_file(vexpress_sysreg_dev, &dev_attr_sys_id); @@ -478,6 +516,7 @@ static struct platform_driver vexpress_sysreg_driver = { static int __init vexpress_sysreg_init(void) { + vexpress_sysreg_of_early_init(); return platform_driver_register(&vexpress_sysreg_driver); } core_initcall(vexpress_sysreg_init); |