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gpio: tegra: Hide tegra_gpio_enable/disable()

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Recent pinctrl discussions concluded that gpiolib APIs should in fact do
whatever is required to mux a GPIO onto pins, by calling pinctrl APIs if
required. This change implements this for the Tegra GPIO driver, and removes
calls to the Tegra-specific APIs from drivers and board files.

Cc: Chris Ball <cjb@laptop.org>
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Chris Ball <cjb@laptop.org> # for sdhci-tegra.c
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Stephen Warren 2012-02-18 01:04:55 -07:00
parent c61b3da0ac
commit 3e215d0a19
12 changed files with 28 additions and 159 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/mach-tegra/board-dt-tegra20.c
View File

@ -55,7 +55,6 @@ void ventana_pinmux_init(void);
struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("nvidia,tegra20-pinmux", TEGRA_APB_MISC_BASE + 0x14, "tegra-pinmux", NULL),
OF_DEV_AUXDATA("nvidia,tegra20-gpio", TEGRA_GPIO_BASE, "tegra-gpio", NULL),
OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL),
OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC2_BASE, "sdhci-tegra.1", NULL),
OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC3_BASE, "sdhci-tegra.2", NULL),

17
arch/arm/mach-tegra/board-harmony-pinmux.c
View File

@ -15,13 +15,11 @@
*/
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/of.h>
#include <mach/pinmux.h>
#include <mach/pinmux-tegra20.h>
#include "gpio-names.h"
#include "board-harmony.h"
#include "board-pinmux.h"
@ -144,24 +142,9 @@ static struct tegra_pingroup_config harmony_pinmux[] = {
{TEGRA_PINGROUP_XM2D, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
};
static struct tegra_gpio_table gpio_table[] = {
{ .gpio = TEGRA_GPIO_SD2_CD, .enable = true },
{ .gpio = TEGRA_GPIO_SD2_WP, .enable = true },
{ .gpio = TEGRA_GPIO_SD2_POWER, .enable = true },
{ .gpio = TEGRA_GPIO_SD4_CD, .enable = true },
{ .gpio = TEGRA_GPIO_SD4_WP, .enable = true },
{ .gpio = TEGRA_GPIO_SD4_POWER, .enable = true },
{ .gpio = TEGRA_GPIO_CDC_IRQ, .enable = true },
{ .gpio = TEGRA_GPIO_HP_DET, .enable = true },
{ .gpio = TEGRA_GPIO_INT_MIC_EN, .enable = true },
{ .gpio = TEGRA_GPIO_EXT_MIC_EN, .enable = true },
};
static struct tegra_board_pinmux_conf conf = {
.pgs = harmony_pinmux,
.pg_count = ARRAY_SIZE(harmony_pinmux),
.gpios = gpio_table,
.gpio_count = ARRAY_SIZE(gpio_table),
};
void harmony_pinmux_init(void)

14
arch/arm/mach-tegra/board-paz00-pinmux.c
View File

@ -15,13 +15,11 @@
*/
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/of.h>
#include <mach/pinmux.h>
#include <mach/pinmux-tegra20.h>
#include "gpio-names.h"
#include "board-paz00.h"
#include "board-pinmux.h"
@ -144,21 +142,9 @@ static struct tegra_pingroup_config paz00_pinmux[] = {
{TEGRA_PINGROUP_XM2D, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
};
static struct tegra_gpio_table gpio_table[] = {
{ .gpio = TEGRA_GPIO_SD1_CD, .enable = true },
{ .gpio = TEGRA_GPIO_SD1_WP, .enable = true },
{ .gpio = TEGRA_GPIO_SD1_POWER, .enable = true },
{ .gpio = TEGRA_ULPI_RST, .enable = true },
{ .gpio = TEGRA_WIFI_PWRN, .enable = true },
{ .gpio = TEGRA_WIFI_RST, .enable = true },
{ .gpio = TEGRA_WIFI_LED, .enable = true },
};
static struct tegra_board_pinmux_conf conf = {
.pgs = paz00_pinmux,
.pg_count = ARRAY_SIZE(paz00_pinmux),
.gpios = gpio_table,
.gpio_count = ARRAY_SIZE(gpio_table),
};
void paz00_pinmux_init(void)

35
arch/arm/mach-tegra/board-pinmux.c
View File

@ -18,7 +18,6 @@
#include <linux/of.h>
#include <linux/string.h>
#include <mach/gpio-tegra.h>
#include <mach/pinmux.h>
#include "board-pinmux.h"
@ -26,18 +25,6 @@
struct tegra_board_pinmux_conf *confs[2];
static void tegra_board_pinmux_setup_gpios(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(confs); i++) {
if (!confs[i])
continue;
tegra_gpio_config(confs[i]->gpios, confs[i]->gpio_count);
}
}
static void tegra_board_pinmux_setup_pinmux(void)
{
int i;
@ -57,29 +44,17 @@ static void tegra_board_pinmux_setup_pinmux(void)
static int tegra_board_pinmux_bus_notify(struct notifier_block *nb,
unsigned long event, void *vdev)
{
static bool had_gpio;
static bool had_pinmux;
struct device *dev = vdev;
const char *devname;
if (event != BUS_NOTIFY_BOUND_DRIVER)
return NOTIFY_DONE;
devname = dev_name(dev);
if (!had_gpio && !strcmp(devname, GPIO_DEV)) {
tegra_board_pinmux_setup_gpios();
had_gpio = true;
} else if (!had_pinmux && !strcmp(devname, PINMUX_DEV)) {
tegra_board_pinmux_setup_pinmux();
had_pinmux = true;
}
if (had_gpio && had_pinmux)
return NOTIFY_STOP_MASK;
else
if (strcmp(dev_name(dev), PINMUX_DEV))
return NOTIFY_DONE;
tegra_board_pinmux_setup_pinmux();
return NOTIFY_STOP_MASK;
}
static struct notifier_block nb = {

5
arch/arm/mach-tegra/board-pinmux.h
View File

@ -15,11 +15,9 @@
#ifndef __MACH_TEGRA_BOARD_PINMUX_H
#define __MACH_TEGRA_BOARD_PINMUX_H
#define GPIO_DEV "tegra-gpio"
#define PINMUX_DEV "tegra-pinmux"
struct tegra_pingroup_config;
struct tegra_gpio_table;
struct tegra_board_pinmux_conf {
struct tegra_pingroup_config *pgs;
@ -27,9 +25,6 @@ struct tegra_board_pinmux_conf {
struct tegra_drive_pingroup_config *drives;
int drive_count;
struct tegra_gpio_table *gpios;
int gpio_count;
};
void tegra_board_pinmux_init(struct tegra_board_pinmux_conf *conf_a,

32
arch/arm/mach-tegra/board-seaboard-pinmux.c
View File

@ -15,13 +15,11 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/of.h>
#include <mach/pinmux.h>
#include <mach/pinmux-tegra20.h>
#include "gpio-names.h"
#include "board-pinmux.h"
#include "board-seaboard.h"
@ -179,35 +177,9 @@ static struct tegra_pingroup_config ventana_pinmux[] = {
{TEGRA_PINGROUP_SPIG, TEGRA_MUX_SPI2_ALT, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE},
};
static struct tegra_gpio_table common_gpio_table[] = {
{ .gpio = TEGRA_GPIO_SD2_CD, .enable = true },
{ .gpio = TEGRA_GPIO_SD2_WP, .enable = true },
{ .gpio = TEGRA_GPIO_SD2_POWER, .enable = true },
{ .gpio = TEGRA_GPIO_CDC_IRQ, .enable = true },
};
static struct tegra_gpio_table seaboard_gpio_table[] = {
{ .gpio = TEGRA_GPIO_LIDSWITCH, .enable = true },
{ .gpio = TEGRA_GPIO_POWERKEY, .enable = true },
{ .gpio = TEGRA_GPIO_HP_DET, .enable = true },
{ .gpio = TEGRA_GPIO_ISL29018_IRQ, .enable = true },
{ .gpio = TEGRA_GPIO_USB1, .enable = true },
};
static struct tegra_gpio_table ventana_gpio_table[] = {
/* hp_det */
{ .gpio = TEGRA_GPIO_PW2, .enable = true },
/* int_mic_en */
{ .gpio = TEGRA_GPIO_PX0, .enable = true },
/* ext_mic_en */
{ .gpio = TEGRA_GPIO_PX1, .enable = true },
};
static struct tegra_board_pinmux_conf common_conf = {
.pgs = common_pinmux,
.pg_count = ARRAY_SIZE(common_pinmux),
.gpios = common_gpio_table,
.gpio_count = ARRAY_SIZE(common_gpio_table),
};
static struct tegra_board_pinmux_conf seaboard_conf = {
@ -215,15 +187,11 @@ static struct tegra_board_pinmux_conf seaboard_conf = {
.pg_count = ARRAY_SIZE(seaboard_pinmux),
.drives = seaboard_drive_pinmux,
.drive_count = ARRAY_SIZE(seaboard_drive_pinmux),
.gpios = seaboard_gpio_table,
.gpio_count = ARRAY_SIZE(seaboard_gpio_table),
};
static struct tegra_board_pinmux_conf ventana_conf = {
.pgs = ventana_pinmux,
.pg_count = ARRAY_SIZE(ventana_pinmux),
.gpios = ventana_gpio_table,
.gpio_count = ARRAY_SIZE(ventana_gpio_table),
};
void seaboard_pinmux_init(void)

1
arch/arm/mach-tegra/board-seaboard.c
View File

@ -249,7 +249,6 @@ static void __init tegra_kaen_init(void)
debug_uart_platform_data[0].irq = INT_UARTB;
seaboard_audio_pdata.gpio_hp_mute = TEGRA_GPIO_KAEN_HP_MUTE;
tegra_gpio_enable(TEGRA_GPIO_KAEN_HP_MUTE);
seaboard_common_init();

12
arch/arm/mach-tegra/board-trimslice-pinmux.c
View File

@ -13,7 +13,6 @@
* GNU General Public License for more details.
*
*/
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/of.h>
@ -21,7 +20,6 @@
#include <mach/pinmux.h>
#include <mach/pinmux-tegra20.h>
#include "gpio-names.h"
#include "board-pinmux.h"
#include "board-trimslice.h"
@ -144,19 +142,9 @@ static struct tegra_pingroup_config trimslice_pinmux[] = {
{TEGRA_PINGROUP_XM2D, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
};
static struct tegra_gpio_table gpio_table[] = {
{ .gpio = TRIMSLICE_GPIO_SD4_CD, .enable = true }, /* mmc4 cd */
{ .gpio = TRIMSLICE_GPIO_SD4_WP, .enable = true }, /* mmc4 wp */
{ .gpio = TRIMSLICE_GPIO_USB1_MODE, .enable = true }, /* USB1 mode */
{ .gpio = TRIMSLICE_GPIO_USB2_RST, .enable = true }, /* USB2 PHY rst */
};
static struct tegra_board_pinmux_conf conf = {
.pgs = trimslice_pinmux,
.pg_count = ARRAY_SIZE(trimslice_pinmux),
.gpios = gpio_table,
.gpio_count = ARRAY_SIZE(gpio_table),
};
void trimslice_pinmux_init(void)

9
arch/arm/mach-tegra/include/mach/gpio-tegra.h
View File

@ -25,13 +25,4 @@
#define TEGRA_NR_GPIOS INT_GPIO_NR
struct tegra_gpio_table {
int gpio; /* GPIO number */
bool enable; /* Enable for GPIO at init? */
};
void tegra_gpio_config(struct tegra_gpio_table *table, int num);
void tegra_gpio_enable(int gpio);
void tegra_gpio_disable(int gpio);
#endif

1
arch/arm/mach-tegra/usb_phy.c
View File

@ -711,7 +711,6 @@ struct tegra_usb_phy *tegra_usb_phy_open(int instance, void __iomem *regs,
err = -ENXIO;
goto err1;
}
tegra_gpio_enable(ulpi_config->reset_gpio);
gpio_request(ulpi_config->reset_gpio, "ulpi_phy_reset_b");
gpio_direction_output(ulpi_config->reset_gpio, 0);
phy->ulpi = otg_ulpi_create(&ulpi_viewport_access_ops, 0);

36
drivers/gpio/gpio-tegra.c
View File

@ -26,10 +26,10 @@
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/irqdomain.h>
#include <linux/pinctrl/consumer.h>
#include <asm/mach/irq.h>
#include <mach/gpio-tegra.h>
#include <mach/iomap.h>
#include <mach/suspend.h>
@ -108,18 +108,29 @@ static void tegra_gpio_mask_write(u32 reg, int gpio, int value)
tegra_gpio_writel(val, reg);
}
void tegra_gpio_enable(int gpio)
static void tegra_gpio_enable(int gpio)
{
tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 1);
}
EXPORT_SYMBOL_GPL(tegra_gpio_enable);
void tegra_gpio_disable(int gpio)
static void tegra_gpio_disable(int gpio)
{
tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 0);
}
EXPORT_SYMBOL_GPL(tegra_gpio_disable);
int tegra_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(offset);
}
void tegra_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(offset);
tegra_gpio_disable(offset);
}
static void tegra_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
tegra_gpio_mask_write(GPIO_MSK_OUT(offset), offset, value);
@ -133,6 +144,7 @@ static int tegra_gpio_get(struct gpio_chip *chip, unsigned offset)
static int tegra_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 0);
tegra_gpio_enable(offset);
return 0;
}
@ -141,6 +153,7 @@ static int tegra_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
{
tegra_gpio_set(chip, offset, value);
tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 1);
tegra_gpio_enable(offset);
return 0;
}
@ -151,13 +164,14 @@ static int tegra_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
static struct gpio_chip tegra_gpio_chip = {
.label = "tegra-gpio",
.request = tegra_gpio_request,
.free = tegra_gpio_free,
.direction_input = tegra_gpio_direction_input,
.get = tegra_gpio_get,
.direction_output = tegra_gpio_direction_output,
.set = tegra_gpio_set,
.to_irq = tegra_gpio_to_irq,
.base = 0,
.ngpio = TEGRA_NR_GPIOS,
};
static void tegra_gpio_irq_ack(struct irq_data *d)
@ -493,20 +507,6 @@ static int __init tegra_gpio_init(void)
}
postcore_initcall(tegra_gpio_init);
void tegra_gpio_config(struct tegra_gpio_table *table, int num)
{
int i;
for (i = 0; i < num; i++) {
int gpio = table[i].gpio;
if (table[i].enable)
tegra_gpio_enable(gpio);
else
tegra_gpio_disable(gpio);
}
}
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>

24
drivers/mmc/host/sdhci-tegra.c
View File

@ -269,7 +269,6 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
"failed to allocate power gpio\n");
goto err_power_req;
}
tegra_gpio_enable(plat->power_gpio);
gpio_direction_output(plat->power_gpio, 1);
}
@ -280,7 +279,6 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
"failed to allocate cd gpio\n");
goto err_cd_req;
}
tegra_gpio_enable(plat->cd_gpio);
gpio_direction_input(plat->cd_gpio);
rc = request_irq(gpio_to_irq(plat->cd_gpio), carddetect_irq,
@ -301,7 +299,6 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
"failed to allocate wp gpio\n");
goto err_wp_req;
}
tegra_gpio_enable(plat->wp_gpio);
gpio_direction_input(plat->wp_gpio);
}
@ -329,23 +326,17 @@ err_add_host:
clk_disable(pltfm_host->clk);
clk_put(pltfm_host->clk);
err_clk_get:
if (gpio_is_valid(plat->wp_gpio)) {
tegra_gpio_disable(plat->wp_gpio);
if (gpio_is_valid(plat->wp_gpio))
gpio_free(plat->wp_gpio);
}
err_wp_req:
if (gpio_is_valid(plat->cd_gpio))
free_irq(gpio_to_irq(plat->cd_gpio), host);
err_cd_irq_req:
if (gpio_is_valid(plat->cd_gpio)) {
tegra_gpio_disable(plat->cd_gpio);
if (gpio_is_valid(plat->cd_gpio))
gpio_free(plat->cd_gpio);
}
err_cd_req:
if (gpio_is_valid(plat->power_gpio)) {
tegra_gpio_disable(plat->power_gpio);
if (gpio_is_valid(plat->power_gpio))
gpio_free(plat->power_gpio);
}
err_power_req:
err_no_plat:
sdhci_pltfm_free(pdev);
@ -362,21 +353,16 @@ static int __devexit sdhci_tegra_remove(struct platform_device *pdev)
sdhci_remove_host(host, dead);
if (gpio_is_valid(plat->wp_gpio)) {
tegra_gpio_disable(plat->wp_gpio);
if (gpio_is_valid(plat->wp_gpio))
gpio_free(plat->wp_gpio);
}
if (gpio_is_valid(plat->cd_gpio)) {
free_irq(gpio_to_irq(plat->cd_gpio), host);
tegra_gpio_disable(plat->cd_gpio);
gpio_free(plat->cd_gpio);
}
if (gpio_is_valid(plat->power_gpio)) {
tegra_gpio_disable(plat->power_gpio);
if (gpio_is_valid(plat->power_gpio))
gpio_free(plat->power_gpio);
}
clk_disable(pltfm_host->clk);
clk_put(pltfm_host->clk);