pinctrl: assume map table entries can't have a NULL name field
pinctrl_register_mappings() already requires that every mapping table
entry have a non-NULL name field.
Logically, this makes sense too; drivers should always request a specific
named state so they know what they're getting. Relying on getting the
first mentioned state in the mapping table is error-prone, and a nasty
special case to implement, given that a given the mapping table may define
multiple states for a device.
Remove a small part of the documentation that talked about optionally
requesting a specific state; it's mandatory now.
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>
diff --git a/Documentation/pinctrl.txt b/Documentation/pinctrl.txt
index 6fe3232..558aac5 100644
--- a/Documentation/pinctrl.txt
+++ b/Documentation/pinctrl.txt
@@ -782,16 +782,19 @@
static const struct pinctrl_map __initdata mapping[] = {
{
.dev_name = "foo-spi.0",
+ .name = PINCTRL_STATE_DEFAULT,
.ctrl_dev_name = "pinctrl-foo",
.function = "spi0",
},
{
.dev_name = "foo-i2c.0",
+ .name = PINCTRL_STATE_DEFAULT,
.ctrl_dev_name = "pinctrl-foo",
.function = "i2c0",
},
{
.dev_name = "foo-mmc.0",
+ .name = PINCTRL_STATE_DEFAULT,
.ctrl_dev_name = "pinctrl-foo",
.function = "mmc0",
},
@@ -944,10 +947,6 @@
pinctrl_put(state->p);
}
-If you want to grab a specific control mapping and not just the first one
-found for this device you can specify a specific mapping name, for example in
-the above example the second i2c0 setting: pinctrl_get(&device, "spi0-pos-B");
-
This get/enable/disable/put sequence can just as well be handled by bus drivers
if you don't want each and every driver to handle it and you know the
arrangement on your bus.
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index ea6c790..f29565a 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -1612,9 +1612,9 @@
PIN_MAP_SYS_HOG("pinctrl-u300", "emif0"),
PIN_MAP_SYS_HOG("pinctrl-u300", "emif1"),
/* per-device maps for MMC/SD, SPI and UART */
- PIN_MAP("MMCSD", "pinctrl-u300", "mmc0", "mmci"),
- PIN_MAP("SPI", "pinctrl-u300", "spi0", "pl022"),
- PIN_MAP("UART0", "pinctrl-u300", "uart0", "uart0"),
+ PIN_MAP(PINCTRL_STATE_DEFAULT, "pinctrl-u300", "mmc0", "mmci"),
+ PIN_MAP(PINCTRL_STATE_DEFAULT, "pinctrl-u300", "spi0", "pl022"),
+ PIN_MAP(PINCTRL_STATE_DEFAULT, "pinctrl-u300", "uart0", "uart0"),
};
struct u300_mux_hog {
@@ -1646,7 +1646,7 @@
struct pinctrl *p;
int ret;
- p = pinctrl_get(u300_mux_hogs[i].dev, NULL);
+ p = pinctrl_get(u300_mux_hogs[i].dev, PINCTRL_STATE_DEFAULT);
if (IS_ERR(p)) {
pr_err("u300: could not get pinmux hog %s\n",
u300_mux_hogs[i].name);
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index f25307b..6af6d8d 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -461,8 +461,8 @@
int i;
struct pinctrl_map const *map;
- /* We must have a dev name */
- if (WARN_ON(!dev))
+ /* We must have both a dev and state name */
+ if (WARN_ON(!dev || !name))
return ERR_PTR(-EINVAL);
devname = dev_name(dev);
@@ -504,16 +504,9 @@
if (strcmp(map->dev_name, devname))
continue;
- /*
- * If we're looking for a specific named map, this must match,
- * else we loop and look for the next.
- */
- if (name != NULL) {
- if (map->name == NULL)
- continue;
- if (strcmp(map->name, name))
- continue;
- }
+ /* State name must be the one we're looking for */
+ if (strcmp(map->name, name))
+ continue;
ret = pinmux_apply_muxmap(pctldev, p, dev, devname, map);
if (ret) {
diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
index c1a871e..3cabb65 100644
--- a/drivers/tty/serial/sirfsoc_uart.c
+++ b/drivers/tty/serial/sirfsoc_uart.c
@@ -673,7 +673,7 @@
port->irq = res->start;
if (sirfport->hw_flow_ctrl) {
- sirfport->p = pinctrl_get(&pdev->dev, NULL);
+ sirfport->p = pinctrl_get(&pdev->dev, PINCTRL_STATE_DEFAULT);
ret = IS_ERR(sirfport->p);
if (ret)
goto pin_err;