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authorStephen Warren <swarren@nvidia.com>2012-03-02 13:05:47 -0700
committerLinus Walleij <linus.walleij@linaro.org>2012-03-05 11:22:59 +0100
commit6e5e959dde0d92d177f035652aeaa77f9330c9c6 (patch)
treec2d874df6a1c591b558a17591a1c8fbc2ba7a1e1 /arch/arm/mach-u300/core.c
parent0e3db173e2b9fd3b82246516e72c17763eb5f98d (diff)
downloadlinux-6e5e959dde0d92d177f035652aeaa77f9330c9c6.tar.bz2
pinctrl: API changes to support multiple states per device
The API model is changed from: p = pinctrl_get(dev, "state1"); pinctrl_enable(p); ... pinctrl_disable(p); pinctrl_put(p); p = pinctrl_get(dev, "state2"); pinctrl_enable(p); ... pinctrl_disable(p); pinctrl_put(p); to this: p = pinctrl_get(dev); s1 = pinctrl_lookup_state(p, "state1"); s2 = pinctrl_lookup_state(p, "state2"); pinctrl_select_state(p, s1); ... pinctrl_select_state(p, s2); ... pinctrl_put(p); This allows devices to directly transition between states without disabling the pin controller programming and put()/get()ing the configuration data each time. This model will also better suit pinconf programming, which doesn't have a concept of "disable". The special-case hogging feature of pin controllers is re-written to use the regular APIs instead of special-case code. Hence, the pinmux-hogs debugfs file is removed; see the top-level pinctrl-handles files for equivalent data. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Dong Aisheng <dong.aisheng@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-u300/core.c')
-rw-r--r--arch/arm/mach-u300/core.c16
1 files changed, 3 insertions, 13 deletions
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index f29565a10e2e..c092cf92e8ea 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -1618,22 +1618,18 @@ static struct pinctrl_map __initdata u300_pinmux_map[] = {
};
struct u300_mux_hog {
- const char *name;
struct device *dev;
struct pinctrl *p;
};
static struct u300_mux_hog u300_mux_hogs[] = {
{
- .name = "uart0",
.dev = &uart0_device.dev,
},
{
- .name = "spi0",
.dev = &pl022_device.dev,
},
{
- .name = "mmc0",
.dev = &mmcsd_device.dev,
},
};
@@ -1646,16 +1642,10 @@ static int __init u300_pinctrl_fetch(void)
struct pinctrl *p;
int ret;
- p = pinctrl_get(u300_mux_hogs[i].dev, PINCTRL_STATE_DEFAULT);
+ p = pinctrl_get_select_default(u300_mux_hogs[i].dev);
if (IS_ERR(p)) {
- pr_err("u300: could not get pinmux hog %s\n",
- u300_mux_hogs[i].name);
- continue;
- }
- ret = pinctrl_enable(p);
- if (ret) {
- pr_err("u300: could enable pinmux hog %s\n",
- u300_mux_hogs[i].name);
+ pr_err("u300: could not get pinmux hog for dev %s\n",
+ dev_name(u300_mux_hogs[i].dev));
continue;
}
u300_mux_hogs[i].p = p;