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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-22 20:25:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-22 20:25:50 -0700
commit7fc86a7908a4e9eb2da4b6498f86193d113842d3 (patch)
treec1b2faab48d2a6003c8e8efae5f356a4e792ce0a /arch
parent90597b6cfc1fc9926a4d54f09bbf5b3254b1b028 (diff)
parent51dddfe839a0ebcb5ff61a779e3f2768714f9957 (diff)
Merge tag 'pinctrl-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pinctrl updates for v3.4 from Linus Walleij (*): - Switches the PXA 168, 910 and MMP over to use pinctrl - Locking revamped - Massive refactorings... - Reform the driver API to use multiple states - Support pin config in the mapping tables - Pinctrl drivers for the nVidia Tegra series - Generic pin config support lib for simple pin controllers - Implement pin config for the U300 * tag 'pinctrl-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (48 commits) ARM: u300: configure some pins as an example pinctrl: support pinconfig on the U300 pinctrl/coh901: use generic pinconf enums and parameters pinctrl: introduce generic pin config pinctrl: fix error path in pinconf_map_to_setting() pinctrl: allow concurrent gpio and mux function ownership of pins pinctrl: forward-declare struct device pinctrl: split pincontrol states into its own header pinctrl: include machine header to core.h ARM: tegra: Select PINCTRL Kconfig variables pinctrl: add a driver for NVIDIA Tegra pinctrl: Show selected function and group in pinmux-pins debugfs pinctrl: enhance mapping table to support pin config operations pinctrl: API changes to support multiple states per device pinctrl: add usecount to pins for muxing pinctrl: refactor struct pinctrl handling in core.c vs pinmux.c pinctrl: fix and simplify locking pinctrl: fix the pin descriptor kerneldoc pinctrl: assume map table entries can't have a NULL name field pinctrl: introduce PINCTRL_STATE_DEFAULT, define hogs as that state ... (*) What is it with all these Linuses these days? There's a Linus at google too. Some day I will get myself my own broadsword, and run around screaming "There can be only one". I used to be _special_ dammit. Snif.
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-tegra/Kconfig4
-rw-r--r--arch/arm/mach-tegra/include/mach/pinconf-tegra.h63
-rw-r--r--arch/arm/mach-u300/core.c80
-rw-r--r--arch/arm/mach-u300/include/mach/gpio-u300.h2
4 files changed, 111 insertions, 38 deletions
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index 373652d76b9..32b420a90c3 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -7,6 +7,8 @@ config ARCH_TEGRA_2x_SOC
select CPU_V7
select ARM_GIC
select ARCH_REQUIRE_GPIOLIB
+ select PINCTRL
+ select PINCTRL_TEGRA20
select USB_ARCH_HAS_EHCI if USB_SUPPORT
select USB_ULPI if USB_SUPPORT
select USB_ULPI_VIEWPORT if USB_SUPPORT
@@ -19,6 +21,8 @@ config ARCH_TEGRA_3x_SOC
select CPU_V7
select ARM_GIC
select ARCH_REQUIRE_GPIOLIB
+ select PINCTRL
+ select PINCTRL_TEGRA30
select USB_ARCH_HAS_EHCI if USB_SUPPORT
select USB_ULPI if USB_SUPPORT
select USB_ULPI_VIEWPORT if USB_SUPPORT
diff --git a/arch/arm/mach-tegra/include/mach/pinconf-tegra.h b/arch/arm/mach-tegra/include/mach/pinconf-tegra.h
new file mode 100644
index 00000000000..1f24d304921
--- /dev/null
+++ b/arch/arm/mach-tegra/include/mach/pinconf-tegra.h
@@ -0,0 +1,63 @@
+/*
+ * pinctrl configuration definitions for the NVIDIA Tegra pinmux
+ *
+ * Copyright (c) 2011, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef __PINCONF_TEGRA_H__
+#define __PINCONF_TEGRA_H__
+
+enum tegra_pinconf_param {
+ /* argument: tegra_pinconf_pull */
+ TEGRA_PINCONF_PARAM_PULL,
+ /* argument: tegra_pinconf_tristate */
+ TEGRA_PINCONF_PARAM_TRISTATE,
+ /* argument: Boolean */
+ TEGRA_PINCONF_PARAM_ENABLE_INPUT,
+ /* argument: Boolean */
+ TEGRA_PINCONF_PARAM_OPEN_DRAIN,
+ /* argument: Boolean */
+ TEGRA_PINCONF_PARAM_LOCK,
+ /* argument: Boolean */
+ TEGRA_PINCONF_PARAM_IORESET,
+ /* argument: Boolean */
+ TEGRA_PINCONF_PARAM_HIGH_SPEED_MODE,
+ /* argument: Boolean */
+ TEGRA_PINCONF_PARAM_SCHMITT,
+ /* argument: Boolean */
+ TEGRA_PINCONF_PARAM_LOW_POWER_MODE,
+ /* argument: Integer, range is HW-dependant */
+ TEGRA_PINCONF_PARAM_DRIVE_DOWN_STRENGTH,
+ /* argument: Integer, range is HW-dependant */
+ TEGRA_PINCONF_PARAM_DRIVE_UP_STRENGTH,
+ /* argument: Integer, range is HW-dependant */
+ TEGRA_PINCONF_PARAM_SLEW_RATE_FALLING,
+ /* argument: Integer, range is HW-dependant */
+ TEGRA_PINCONF_PARAM_SLEW_RATE_RISING,
+};
+
+enum tegra_pinconf_pull {
+ TEGRA_PINCONFIG_PULL_NONE,
+ TEGRA_PINCONFIG_PULL_DOWN,
+ TEGRA_PINCONFIG_PULL_UP,
+};
+
+enum tegra_pinconf_tristate {
+ TEGRA_PINCONFIG_DRIVEN,
+ TEGRA_PINCONFIG_TRISTATE,
+};
+
+#define TEGRA_PINCONF_PACK(_param_, _arg_) ((_param_) << 16 | (_arg_))
+#define TEGRA_PINCONF_UNPACK_PARAM(_conf_) ((_conf_) >> 16)
+#define TEGRA_PINCONF_UNPACK_ARG(_conf_) ((_conf_) & 0xffff)
+
+#endif
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index b4c6926a700..a7b3f36e226 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -26,7 +26,8 @@
#include <linux/mtd/nand.h>
#include <linux/mtd/fsmc.h>
#include <linux/pinctrl/machine.h>
-#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/pinctrl/pinconf-generic.h>
#include <linux/dma-mapping.h>
#include <asm/types.h>
@@ -1477,7 +1478,7 @@ static struct coh901318_platform coh901318_platform = {
.max_channels = U300_DMA_CHANNELS,
};
-static struct resource pinmux_resources[] = {
+static struct resource pinctrl_resources[] = {
{
.start = U300_SYSCON_BASE,
.end = U300_SYSCON_BASE + SZ_4K - 1,
@@ -1506,6 +1507,13 @@ static struct platform_device i2c1_device = {
.resource = i2c1_resources,
};
+static struct platform_device pinctrl_device = {
+ .name = "pinctrl-u300",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(pinctrl_resources),
+ .resource = pinctrl_resources,
+};
+
/*
* The different variants have a few different versions of the
* GPIO block, with different number of ports.
@@ -1525,6 +1533,7 @@ static struct u300_gpio_platform u300_gpio_plat = {
#endif
.gpio_base = 0,
.gpio_irq_base = IRQ_U300_GPIO_BASE,
+ .pinctrl_device = &pinctrl_device,
};
static struct platform_device gpio_device = {
@@ -1597,71 +1606,67 @@ static struct platform_device dma_device = {
},
};
-static struct platform_device pinmux_device = {
- .name = "pinmux-u300",
- .id = -1,
- .num_resources = ARRAY_SIZE(pinmux_resources),
- .resource = pinmux_resources,
+static unsigned long pin_pullup_conf[] = {
+ PIN_CONF_PACKED(PIN_CONFIG_BIAS_PULL_UP, 1),
};
-/* Pinmux settings */
-static struct pinmux_map __initdata u300_pinmux_map[] = {
+static unsigned long pin_highz_conf[] = {
+ PIN_CONF_PACKED(PIN_CONFIG_BIAS_HIGH_IMPEDANCE, 0),
+};
+
+/* Pin control settings */
+static struct pinctrl_map __initdata u300_pinmux_map[] = {
/* anonymous maps for chip power and EMIFs */
- PINMUX_MAP_SYS_HOG("POWER", "pinmux-u300", "power"),
- PINMUX_MAP_SYS_HOG("EMIF0", "pinmux-u300", "emif0"),
- PINMUX_MAP_SYS_HOG("EMIF1", "pinmux-u300", "emif1"),
+ PIN_MAP_MUX_GROUP_HOG_DEFAULT("pinctrl-u300", NULL, "power"),
+ PIN_MAP_MUX_GROUP_HOG_DEFAULT("pinctrl-u300", NULL, "emif0"),
+ PIN_MAP_MUX_GROUP_HOG_DEFAULT("pinctrl-u300", NULL, "emif1"),
/* per-device maps for MMC/SD, SPI and UART */
- PINMUX_MAP("MMCSD", "pinmux-u300", "mmc0", "mmci"),
- PINMUX_MAP("SPI", "pinmux-u300", "spi0", "pl022"),
- PINMUX_MAP("UART0", "pinmux-u300", "uart0", "uart0"),
+ PIN_MAP_MUX_GROUP_DEFAULT("mmci", "pinctrl-u300", NULL, "mmc0"),
+ PIN_MAP_MUX_GROUP_DEFAULT("pl022", "pinctrl-u300", NULL, "spi0"),
+ PIN_MAP_MUX_GROUP_DEFAULT("uart0", "pinctrl-u300", NULL, "uart0"),
+ /* This pin is used for clock return rather than GPIO */
+ PIN_MAP_CONFIGS_PIN_DEFAULT("mmci", "pinctrl-u300", "PIO APP GPIO 11",
+ pin_pullup_conf),
+ /* This pin is used for card detect */
+ PIN_MAP_CONFIGS_PIN_DEFAULT("mmci", "pinctrl-u300", "PIO MS INS",
+ pin_highz_conf),
};
struct u300_mux_hog {
- const char *name;
struct device *dev;
- struct pinmux *pmx;
+ 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,
},
};
-static int __init u300_pinmux_fetch(void)
+static int __init u300_pinctrl_fetch(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(u300_mux_hogs); i++) {
- struct pinmux *pmx;
- int ret;
+ struct pinctrl *p;
- pmx = pinmux_get(u300_mux_hogs[i].dev, NULL);
- if (IS_ERR(pmx)) {
- pr_err("u300: could not get pinmux hog %s\n",
- u300_mux_hogs[i].name);
- continue;
- }
- ret = pinmux_enable(pmx);
- if (ret) {
- pr_err("u300: could enable pinmux hog %s\n",
- u300_mux_hogs[i].name);
+ p = pinctrl_get_select_default(u300_mux_hogs[i].dev);
+ if (IS_ERR(p)) {
+ pr_err("u300: could not get pinmux hog for dev %s\n",
+ dev_name(u300_mux_hogs[i].dev));
continue;
}
- u300_mux_hogs[i].pmx = pmx;
+ u300_mux_hogs[i].p = p;
}
return 0;
}
-subsys_initcall(u300_pinmux_fetch);
+subsys_initcall(u300_pinctrl_fetch);
/*
* Notice that AMBA devices are initialized before platform devices.
@@ -1676,7 +1681,6 @@ static struct platform_device *platform_devs[] __initdata = {
&gpio_device,
&nand_device,
&wdog_device,
- &pinmux_device,
};
/*
@@ -1861,8 +1865,8 @@ void __init u300_init_devices(void)
u300_assign_physmem();
/* Initialize pinmuxing */
- pinmux_register_mappings(u300_pinmux_map,
- ARRAY_SIZE(u300_pinmux_map));
+ pinctrl_register_mappings(u300_pinmux_map,
+ ARRAY_SIZE(u300_pinmux_map));
/* Register subdevices on the I2C buses */
u300_i2c_register_board_devices();
diff --git a/arch/arm/mach-u300/include/mach/gpio-u300.h b/arch/arm/mach-u300/include/mach/gpio-u300.h
index bf4c7935aec..e81400c1753 100644
--- a/arch/arm/mach-u300/include/mach/gpio-u300.h
+++ b/arch/arm/mach-u300/include/mach/gpio-u300.h
@@ -24,12 +24,14 @@ enum u300_gpio_variant {
* @ports: number of GPIO block ports
* @gpio_base: first GPIO number for this block (use a free range)
* @gpio_irq_base: first GPIO IRQ number for this block (use a free range)
+ * @pinctrl_device: pin control device to spawn as child
*/
struct u300_gpio_platform {
enum u300_gpio_variant variant;
u8 ports;
int gpio_base;
int gpio_irq_base;
+ struct platform_device *pinctrl_device;
};
#endif /* __MACH_U300_GPIO_U300_H */