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authorArnd Bergmann <arnd@arndb.de>2012-10-04 22:57:00 +0200
committerArnd Bergmann <arnd@arndb.de>2012-10-04 22:57:51 +0200
commitc37d6154c0b9163c27e53cc1d0be3867b4abd760 (patch)
tree7a24522c56d1cb284dff1d3c225bbdaba0901bb5 /drivers/gpio/gpio-twl4030.c
parentasm-generic: Add default clkdev.h (diff)
parentUAPI: (Scripted) Disintegrate include/asm-generic (diff)
downloadlinux-c37d6154c0b9163c27e53cc1d0be3867b4abd760.tar.xz
linux-c37d6154c0b9163c27e53cc1d0be3867b4abd760.zip
Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic
Patches from David Howells <dhowells@redhat.com>: This is to complete part of the UAPI disintegration for which the preparatory patches were pulled recently. Note that there are some fixup patches which are at the base of the branch aimed at you, plus all arches get the asm-generic branch merged in too. * 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers: UAPI: (Scripted) Disintegrate include/asm-generic UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k) c6x: remove c6x signal.h UAPI: Split compound conditionals containing __KERNEL__ in Arm64 UAPI: Fix the guards on various asm/unistd.h files Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/gpio/gpio-twl4030.c')
-rw-r--r--drivers/gpio/gpio-twl4030.c90
1 files changed, 61 insertions, 29 deletions
diff --git a/drivers/gpio/gpio-twl4030.c b/drivers/gpio/gpio-twl4030.c
index 94256fe7bf36..c5f8ca233e1f 100644
--- a/drivers/gpio/gpio-twl4030.c
+++ b/drivers/gpio/gpio-twl4030.c
@@ -51,6 +51,7 @@
static struct gpio_chip twl_gpiochip;
+static int twl4030_gpio_base;
static int twl4030_gpio_irq_base;
/* genirq interfaces are not available to modules */
@@ -395,6 +396,29 @@ static int __devinit gpio_twl4030_debounce(u32 debounce, u8 mmc_cd)
static int gpio_twl4030_remove(struct platform_device *pdev);
+static struct twl4030_gpio_platform_data *of_gpio_twl4030(struct device *dev)
+{
+ struct twl4030_gpio_platform_data *omap_twl_info;
+
+ omap_twl_info = devm_kzalloc(dev, sizeof(*omap_twl_info), GFP_KERNEL);
+ if (!omap_twl_info)
+ return NULL;
+
+ omap_twl_info->use_leds = of_property_read_bool(dev->of_node,
+ "ti,use-leds");
+
+ of_property_read_u32(dev->of_node, "ti,debounce",
+ &omap_twl_info->debounce);
+ of_property_read_u32(dev->of_node, "ti,mmc-cd",
+ (u32 *)&omap_twl_info->mmc_cd);
+ of_property_read_u32(dev->of_node, "ti,pullups",
+ &omap_twl_info->pullups);
+ of_property_read_u32(dev->of_node, "ti,pulldowns",
+ &omap_twl_info->pulldowns);
+
+ return omap_twl_info;
+}
+
static int __devinit gpio_twl4030_probe(struct platform_device *pdev)
{
struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data;
@@ -427,49 +451,57 @@ no_irqs:
twl_gpiochip.ngpio = TWL4030_GPIO_MAX;
twl_gpiochip.dev = &pdev->dev;
- if (pdata) {
- twl_gpiochip.base = pdata->gpio_base;
+ if (node)
+ pdata = of_gpio_twl4030(&pdev->dev);
- /*
- * NOTE: boards may waste power if they don't set pullups
- * and pulldowns correctly ... default for non-ULPI pins is
- * pulldown, and some other pins may have external pullups
- * or pulldowns. Careful!
- */
- ret = gpio_twl4030_pulls(pdata->pullups, pdata->pulldowns);
- if (ret)
- dev_dbg(&pdev->dev, "pullups %.05x %.05x --> %d\n",
- pdata->pullups, pdata->pulldowns,
- ret);
-
- ret = gpio_twl4030_debounce(pdata->debounce, pdata->mmc_cd);
- if (ret)
- dev_dbg(&pdev->dev, "debounce %.03x %.01x --> %d\n",
- pdata->debounce, pdata->mmc_cd,
- ret);
-
- /*
- * NOTE: we assume VIBRA_CTL.VIBRA_EN, in MODULE_AUDIO_VOICE,
- * is (still) clear if use_leds is set.
- */
- if (pdata->use_leds)
- twl_gpiochip.ngpio += 2;
+ if (pdata == NULL) {
+ dev_err(&pdev->dev, "Platform data is missing\n");
+ return -ENXIO;
}
+ /*
+ * NOTE: boards may waste power if they don't set pullups
+ * and pulldowns correctly ... default for non-ULPI pins is
+ * pulldown, and some other pins may have external pullups
+ * or pulldowns. Careful!
+ */
+ ret = gpio_twl4030_pulls(pdata->pullups, pdata->pulldowns);
+ if (ret)
+ dev_dbg(&pdev->dev, "pullups %.05x %.05x --> %d\n",
+ pdata->pullups, pdata->pulldowns, ret);
+
+ ret = gpio_twl4030_debounce(pdata->debounce, pdata->mmc_cd);
+ if (ret)
+ dev_dbg(&pdev->dev, "debounce %.03x %.01x --> %d\n",
+ pdata->debounce, pdata->mmc_cd, ret);
+
+ /*
+ * NOTE: we assume VIBRA_CTL.VIBRA_EN, in MODULE_AUDIO_VOICE,
+ * is (still) clear if use_leds is set.
+ */
+ if (pdata->use_leds)
+ twl_gpiochip.ngpio += 2;
+
ret = gpiochip_add(&twl_gpiochip);
if (ret < 0) {
dev_err(&pdev->dev, "could not register gpiochip, %d\n", ret);
twl_gpiochip.ngpio = 0;
gpio_twl4030_remove(pdev);
- } else if (pdata && pdata->setup) {
+ goto out;
+ }
+
+ twl4030_gpio_base = twl_gpiochip.base;
+
+ if (pdata && pdata->setup) {
int status;
status = pdata->setup(&pdev->dev,
- pdata->gpio_base, TWL4030_GPIO_MAX);
+ twl4030_gpio_base, TWL4030_GPIO_MAX);
if (status)
dev_dbg(&pdev->dev, "setup --> %d\n", status);
}
+out:
return ret;
}
@@ -481,7 +513,7 @@ static int gpio_twl4030_remove(struct platform_device *pdev)
if (pdata && pdata->teardown) {
status = pdata->teardown(&pdev->dev,
- pdata->gpio_base, TWL4030_GPIO_MAX);
+ twl4030_gpio_base, TWL4030_GPIO_MAX);
if (status) {
dev_dbg(&pdev->dev, "teardown --> %d\n", status);
return status;