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soc: qcom: sdx_ext_ipc: Change GPIO configuration

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Changing GPIO output value is not reflecting. Change GPIO pull up
configuration from pull up to no pull to reflect state change.

Change-Id: Iac636b9b601b9819ee7aac2118c1af3b0f864e86
Signed-off-by: Prasanna Kumar Thoorvas Samyrao Muralidharan <ptsm@codeaurora.org>
This commit is contained in:
Prasanna Kumar Thoorvas Samyrao Muralidharan 2021-08-19 23:22:40 +05:30 • committed by Karthick Shanmugham
commit 0106d8287c
1 changed files with 48 additions and 7 deletions
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55
drivers/soc/qcom/sdx_ext_ipc.c
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@ -14,6 +14,12 @@
#include <linux/suspend.h>
#include <soc/qcom/sb_notification.h>
#define GPIO_BASE 0xf100000
#define GPIO_REG_OFFSET 0x1000
#define GPIO_REG_SIZE 0x300000
#define E911_GPIO_NUMBER 45
#define STATUS_UP 1
#define STATUS_DOWN 0
@ -49,6 +55,8 @@ struct gpio_cntrl {
int status_irq;
int wakeup_irq;
int policy;
unsigned int ipq807x_attach;
void __iomem *gpio_base;
struct device *dev;
struct mutex policy_lock;
struct mutex e911_lock;
@ -114,15 +122,27 @@ static DEVICE_ATTR_RW(policy);
static ssize_t e911_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int ret, state;
int ret;
u32 state;
struct gpio_cntrl *mdm = dev_get_drvdata(dev);
void __iomem *addr = NULL;
if (mdm->gpios[STATUS_OUT2] < 0)
return -ENXIO;
mutex_lock(&mdm->e911_lock);
state = gpio_get_value(mdm->gpios[STATUS_OUT2]);
ret = scnprintf(buf, 2, "%d\n", state);
if (mdm->ipq807x_attach) {
addr = mdm->gpio_base + GPIO_REG_OFFSET * E911_GPIO_NUMBER;
state = readl_relaxed(addr);
if (state == 0x3c7)
ret = scnprintf(buf, 2, "1\n");
else
ret = scnprintf(buf, 2, "0\n");
} else {
state = gpio_get_value(mdm->gpios[STATUS_OUT2]);
ret = scnprintf(buf, 2, "%d\n", state);
}
mutex_unlock(&mdm->e911_lock);
return ret;
@ -132,6 +152,7 @@ static ssize_t e911_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct gpio_cntrl *mdm = dev_get_drvdata(dev);
void __iomem *addr = NULL;
int e911;
if (kstrtoint(buf, 0, &e911))
@ -141,10 +162,19 @@ static ssize_t e911_store(struct device *dev, struct device_attribute *attr,
return -ENXIO;
mutex_lock(&mdm->e911_lock);
if (e911)
gpio_set_value(mdm->gpios[STATUS_OUT2], 1);
else
gpio_set_value(mdm->gpios[STATUS_OUT2], 0);
if (mdm->ipq807x_attach) {
addr = mdm->gpio_base + GPIO_REG_OFFSET * E911_GPIO_NUMBER;
if (e911)
writel_relaxed(0x3c7, addr);
else
writel_relaxed(0x4, addr);
} else {
if (e911)
gpio_set_value(mdm->gpios[STATUS_OUT2], 1);
else
gpio_set_value(mdm->gpios[STATUS_OUT2], 0);
}
mutex_unlock(&mdm->e911_lock);
return count;
@ -297,6 +327,7 @@ static int setup_ipc(struct gpio_cntrl *mdm)
static int sdx_ext_ipc_panic(struct notifier_block *this,
unsigned long event, void *ptr)
{
void __iomem *addr = NULL;
struct gpio_cntrl *mdm = container_of(this,
struct gpio_cntrl, panic_blk);
@ -323,6 +354,13 @@ static int sdx_ext_ipc_probe(struct platform_device *pdev)
return -ENOMEM;
mdm->dev = &pdev->dev;
of_property_read_u32(node, "ipq807x_attach", &mdm->ipq807x_attach);
if (mdm->ipq807x_attach) {
dev_info(mdm->dev, "IPQ807x attach detected\n");
mdm->gpio_base = ioremap(GPIO_BASE, GPIO_REG_SIZE);
}
ret = setup_ipc(mdm);
if (ret) {
dev_err(mdm->dev, "Error setting up gpios\n");
@ -426,6 +464,9 @@ static int sdx_ext_ipc_remove(struct platform_device *pdev)
&mdm->panic_blk);
remove_ipc(mdm);
device_remove_file(mdm->dev, &dev_attr_policy);
if (mdm->ipq807x_attach)
iounmap(mdm->gpio_base);
return 0;
}