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pinctrl: don't create a device for each pin controller

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Pin controllers should already be instantiated as a device, so there's
no need for the pinctrl core to create a new struct device for each
controller.

This allows the controller's real name to be used in the mux mapping
table, rather than e.g. "pinctrl.0", "pinctrl.1", etc.

This necessitates removal of the PINMUX_MAP_PRIMARY*() macros, since
their sole purpose was to hard-code the .ctrl_dev_name field to be
"pinctrl.0".

Signed-off-by: Stephen Warren <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Stephen Warren 2011-12-09 16:59:05 -07:00 • committed by Linus Walleij
commit 51cd24ee62
6 changed files with 54 additions and 99 deletions
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26
Documentation/pinctrl.txt
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@ -783,17 +783,17 @@ spi on the second function mapping:
static const struct pinmux_map __initdata pmx_mapping[] = {
{
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "spi0",
.dev_name = "foo-spi.0",
},
{
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "i2c0",
.dev_name = "foo-i2c.0",
},
{
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "mmc0",
.dev_name = "foo-mmc.0",
},
@ -815,7 +815,7 @@ You register this pinmux mapping to the pinmux subsystem by simply:
ret = pinmux_register_mappings(pmx_mapping, ARRAY_SIZE(pmx_mapping));
Since the above construct is pretty common there is a helper macro to make
it even more compact which assumes you want to use pinctrl.0 and position
it even more compact which assumes you want to use pinctrl-foo and position
0 for mapping, for example:
static struct pinmux_map __initdata pmx_mapping[] = {
@ -832,14 +832,14 @@ As it is possible to map a function to different groups of pins an optional
...
{
.name = "spi0-pos-A",
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "spi0",
.group = "spi0_0_grp",
.dev_name = "foo-spi.0",
},
{
.name = "spi0-pos-B",
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "spi0",
.group = "spi0_1_grp",
.dev_name = "foo-spi.0",
@ -858,42 +858,42 @@ case), we define a mapping like this:
...
{
.name "2bit"
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "mmc0",
.group = "mmc0_1_grp",
.dev_name = "foo-mmc.0",
},
{
.name "4bit"
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "mmc0",
.group = "mmc0_1_grp",
.dev_name = "foo-mmc.0",
},
{
.name "4bit"
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "mmc0",
.group = "mmc0_2_grp",
.dev_name = "foo-mmc.0",
},
{
.name "8bit"
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "mmc0",
.group = "mmc0_1_grp",
.dev_name = "foo-mmc.0",
},
{
.name "8bit"
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "mmc0",
.group = "mmc0_2_grp",
.dev_name = "foo-mmc.0",
},
{
.name "8bit"
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "mmc0",
.group = "mmc0_3_grp",
.dev_name = "foo-mmc.0",
@ -996,7 +996,7 @@ like this:
{
.name "POWERMAP"
.ctrl_dev_name = "pinctrl.0",
.ctrl_dev_name = "pinctrl-foo",
.function = "power_func",
.hog_on_boot = true,
},