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Merge tag 'pinctrl-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

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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.
This commit is contained in:
Linus Torvalds
2012-03-22 20:25:50 -07:00
parent 90597b6cfc 51dddfe839
commit 7fc86a7908
35 changed files with 12981 additions and 1623 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm/mach-tegra/Kconfig
View File

@@ -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

63
arch/arm/mach-tegra/include/mach/pinconf-tegra.h Normal file
View File

@@ -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

80
arch/arm/mach-u300/core.c
View File

@@ -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);
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;
}
ret = pinmux_enable(pmx);
if (ret) {
pr_err("u300: could enable pinmux hog %s\n",
u300_mux_hogs[i].name);
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();

2
arch/arm/mach-u300/include/mach/gpio-u300.h
View File

@@ -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 */