pinctrl: add a driver for the U300 pinmux

This adds a driver for the U300 pinmux portions of the system
controller "SYSCON". It also serves as an example of how to use
the pinmux subsystem. This driver also houses the platform data
for the only supported platform.

This deletes the old U300 driver in arch/arm/mach-u300 and
replace it with a driver using the new subsystem.

The new driver is considerably fatter than the old one, but it
also registers all 467 pins of the system and adds the power
and EMIF pin groups and corresponding functions. The idea
is to use this driver as a a reference for other
implementation so it needs to be as complete and verbose
as possible.

Reviewed-by: Barry Song <21cnbao@gmail.com>
[Fixup for changed function names and semantics in the v10 patch]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 0 insertions, 16 deletions

diff --git a/arch/arm/mach-u300/mmc.c b/arch/arm/mach-u300/mmc.c
index 677ccef5cd32..d5e4a98a9ab8 100644
--- a/arch/arm/mach-u300/mmc.c
+++ b/arch/arm/mach-u300/mmc.c
@@ -21,7 +21,6 @@
 #include <mach/dma_channels.h>
 
 #include "mmc.h"
-#include "padmux.h"
 
 static struct mmci_platform_data mmc0_plat_data = {
 	/*
@@ -45,24 +44,9 @@ static struct mmci_platform_data mmc0_plat_data = {
 int __devinit mmc_init(struct amba_device *adev)
 {
 	struct device *mmcsd_device = &adev->dev;
-	struct pmx *pmx;
 	int ret = 0;
 
 	mmcsd_device->platform_data = &mmc0_plat_data;
 
-	/*
-	 * Setup padmuxing for MMC. Since this must always be
-	 * compiled into the kernel, pmx is never released.
-	 */
-	pmx = pmx_get(mmcsd_device, U300_APP_PMX_MMC_SETTING);
-
-	if (IS_ERR(pmx))
-		pr_warning("Could not get padmux handle\n");
-	else {
-		ret = pmx_activate(mmcsd_device, pmx);
-		if (IS_ERR_VALUE(ret))
-			pr_warning("Could not activate padmuxing\n");
-	}
-
 	return ret;
 }