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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-24 20:00:58 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-24 20:00:58 -0800
commitab7826595e9ec51a51f622c5fc91e2f59440481a (patch)
tree34241b399fa7a12c260e06e6c1c31bc69d46e1e3 /drivers/mfd/vexpress-sysreg.c
parent21fbd5809ad126b949206d78e0a0e07ec872ea11 (diff)
parentff7109fa632654eaef657186f2942f5b679023d6 (diff)
Merge tag 'mfd-3.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Pull MFS updates from Samuel Ortiz: "This is the MFD pull request for the 3.9 merge window. No new drivers this time, but a bunch of fairly big cleanups: - Roger Quadros worked on a OMAP USBHS and TLL platform data consolidation, OMAP5 support and clock management code cleanup. - The first step of a major sync for the ab8500 driver from Lee Jones. In particular, the debugfs and the sysct interfaces got extended and improved. - Peter Ujfalusi sent a nice patchset for cleaning and fixing the twl-core driver, with a much needed module id lookup code improvement. - The regular wm5102 and arizona cleanups and fixes from Mark Brown. - Laxman Dewangan extended the palmas APIs in order to implement the palmas GPIO and rt drivers. - Laxman also added DT support for the tps65090 driver. - The Intel SCH and ICH drivers got a couple fixes from Aaron Sierra and Darren Hart. - Linus Walleij patchset for the ab8500 driver allowed ab8500 and ab9540 based devices to switch to the new abx500 pin-ctrl driver. - The max8925 now has device tree and irqdomain support thanks to Qing Xu. - The recently added rtsx driver got a few cleanups and fixes for a better card detection code path and now also supports the RTS5227 chipset, thanks to Wei Wang and Roger Tseng." * tag 'mfd-3.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (109 commits) mfd: lpc_ich: Use devres API to allocate private data mfd: lpc_ich: Add Device IDs for Intel Wellsburg PCH mfd: lpc_sch: Accomodate partial population of the MFD devices mfd: da9052-i2c: Staticize da9052_i2c_fix() mfd: syscon: Fix sparse warning mfd: twl-core: Fix kernel panic on boot mfd: rtsx: Fix issue that booting OS with SD card inserted mfd: ab8500: Fix compile error mfd: Add missing GENERIC_HARDIRQS dependecies Documentation: Add docs for max8925 dt mfd: max8925: Add dts mfd: max8925: Support dt for backlight mfd: max8925: Fix onkey driver irq base mfd: max8925: Fix mfd device register failure mfd: max8925: Add irqdomain for dt mfd: vexpress: Allow vexpress-sysreg to self-initialise mfd: rtsx: Support RTS5227 mfd: rtsx: Implement driving adjustment to device-dependent callbacks mfd: vexpress: Add pseudo-GPIO based LEDs mfd: ab8500: Rename ab8500 to abx500 for hwmon driver ...
Diffstat (limited to 'drivers/mfd/vexpress-sysreg.c')
-rw-r--r--drivers/mfd/vexpress-sysreg.c83
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);