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pinctrl: qcom: Add support for reset for apq8064

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This patch adds support for reset functions to reboot the boards
with soc apq8064.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: "Ivan T. Ivanov" <iivanov@mm-sol.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Andy Gross <agross@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Pramod Gurav 2014-08-29 20:00:59 +05:30 committed by Linus Walleij
parent 79c62cdd07
commit 327455817a
2 changed files with 36 additions and 1 deletions
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7
drivers/pinctrl/qcom/pinctrl-apq8064.c
View file

@ -324,6 +324,7 @@ enum apq8064_functions {
APQ_MUX_tsif1,
APQ_MUX_tsif2,
APQ_MUX_usb2_hsic,
APQ_MUX_ps_hold,
APQ_MUX_NA,
};
@ -351,6 +352,9 @@ static const char * const gpio_groups[] = {
"gpio78", "gpio79", "gpio80", "gpio81", "gpio82", "gpio83", "gpio84",
"gpio85", "gpio86", "gpio87", "gpio88", "gpio89"
};
static const char * const ps_hold_groups[] = {
"gpio78"
};
static const char * const gsbi1_groups[] = {
"gpio18", "gpio19", "gpio20", "gpio21"
};
@ -477,6 +481,7 @@ static const struct msm_function apq8064_functions[] = {
FUNCTION(tsif1),
FUNCTION(tsif2),
FUNCTION(usb2_hsic),
FUNCTION(ps_hold),
};
static const struct msm_pingroup apq8064_groups[] = {
@ -558,7 +563,7 @@ static const struct msm_pingroup apq8064_groups[] = {
PINGROUP(75, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA),
PINGROUP(76, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA),
PINGROUP(77, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA),
PINGROUP(78, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA),
PINGROUP(78, ps_hold, NA, NA, NA, NA, NA, NA, NA, NA, NA),
PINGROUP(79, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA),
PINGROUP(80, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA),
PINGROUP(81, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA),

30
drivers/pinctrl/qcom/pinctrl-msm.c
View file

@ -12,6 +12,7 @@
* GNU General Public License for more details.
*/
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/module.h>
@ -27,12 +28,15 @@
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <asm/system_misc.h>
#include "../core.h"
#include "../pinconf.h"
#include "pinctrl-msm.h"
#include "../pinctrl-utils.h"
#define MAX_NR_GPIO 300
#define PS_HOLD_OFFSET 0x820
/**
* struct msm_pinctrl - state for a pinctrl-msm device
@ -850,6 +854,30 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl)
return 0;
}
#ifdef CONFIG_ARM
static void __iomem *msm_ps_hold;
static void msm_reset(enum reboot_mode reboot_mode, const char *cmd)
{
writel(0, msm_ps_hold);
mdelay(10000);
}
static void msm_pinctrl_setup_pm_reset(struct msm_pinctrl *pctrl)
{
int i = 0;
const struct msm_function *func = pctrl->soc->functions;
for (; i <= pctrl->soc->nfunctions; i++)
if (!strcmp(func[i].name, "ps_hold")) {
msm_ps_hold = pctrl->regs + PS_HOLD_OFFSET;
arm_pm_restart = msm_reset;
}
}
#else
static void msm_pinctrl_setup_pm_reset(const struct msm_pinctrl *pctrl) {}
#endif
int msm_pinctrl_probe(struct platform_device *pdev,
const struct msm_pinctrl_soc_data *soc_data)
{
@ -873,6 +901,8 @@ int msm_pinctrl_probe(struct platform_device *pdev,
if (IS_ERR(pctrl->regs))
return PTR_ERR(pctrl->regs);
msm_pinctrl_setup_pm_reset(pctrl);
pctrl->irq = platform_get_irq(pdev, 0);
if (pctrl->irq < 0) {
dev_err(&pdev->dev, "No interrupt defined for msmgpio\n");