drivers/misc/ti-st: remove gpio handling
A platform hook to enable/disable the chip was introduced to perform specific
activities to power-up and power-down the WL chip.
Moving the power-up/down sequence also there makes more sense, since different
platforms have begun to have their own ways to power-up/down the chip.
This patch removes all of the gpio handling done by the driver in
st_kim_start/st_kim_stop & any of the gpio request done in the probe function.
Signed-off-by: Pavan Savoy <pavan_savoy@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 7c14f8f..5c99995 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -454,11 +454,6 @@
if (pdata->chip_enable)
pdata->chip_enable(kim_gdata);
- /* Configure BT nShutdown to HIGH state */
- gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
- mdelay(5); /* FIXME: a proper toggle */
- gpio_set_value(kim_gdata->nshutdown, GPIO_HIGH);
- mdelay(100);
/* re-initialize the completion */
INIT_COMPLETION(kim_gdata->ldisc_installed);
/* send notification to UIM */
@@ -500,8 +495,7 @@
* (b) upon failure to either install ldisc or download firmware.
* The function is responsible to (a) notify UIM about un-installation,
* (b) flush UART if the ldisc was installed.
- * (c) reset BT_EN - pull down nshutdown at the end.
- * (d) invoke platform's chip disabling routine.
+ * (c) invoke platform's chip disabling routine.
*/
long st_kim_stop(void *kim_data)
{
@@ -533,13 +527,6 @@
return -ETIMEDOUT;
}
- /* By default configure BT nShutdown to LOW state */
- gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
- mdelay(1);
- gpio_set_value(kim_gdata->nshutdown, GPIO_HIGH);
- mdelay(1);
- gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
-
/* platform specific disable */
if (pdata->chip_disable)
pdata->chip_disable(kim_gdata);
@@ -731,20 +718,6 @@
/* refer to itself */
kim_gdata->core_data->kim_data = kim_gdata;
- /* Claim the chip enable nShutdown gpio from the system */
- kim_gdata->nshutdown = pdata->nshutdown_gpio;
- status = gpio_request(kim_gdata->nshutdown, "kim");
- if (unlikely(status)) {
- pr_err(" gpio %ld request failed ", kim_gdata->nshutdown);
- return status;
- }
-
- /* Configure nShutdown GPIO as output=0 */
- status = gpio_direction_output(kim_gdata->nshutdown, 0);
- if (unlikely(status)) {
- pr_err(" unable to configure gpio %ld", kim_gdata->nshutdown);
- return status;
- }
/* get reference of pdev for request_firmware
*/
kim_gdata->kim_pdev = pdev;
@@ -780,18 +753,10 @@
static int kim_remove(struct platform_device *pdev)
{
- /* free the GPIOs requested */
- struct ti_st_plat_data *pdata = pdev->dev.platform_data;
struct kim_data_s *kim_gdata;
kim_gdata = dev_get_drvdata(&pdev->dev);
- /* Free the Bluetooth/FM/GPIO
- * nShutdown gpio from the system
- */
- gpio_free(pdata->nshutdown_gpio);
- pr_info("nshutdown GPIO Freed");
-
debugfs_remove_recursive(kim_debugfs_dir);
sysfs_remove_group(&pdev->dev.kobj, &uim_attr_grp);
pr_info("sysfs entries removed");
