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>

1 files changed, 1 insertions, 36 deletions

diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 7c14f8fd98db..5c99995f4eac 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -454,11 +454,6 @@ long st_kim_start(void *kim_data)
                 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 @@ long st_kim_start(void *kim_data)
  *      (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 @@ long st_kim_stop(void *kim_data)
                 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 @@ static int kim_probe(struct platform_device *pdev)
         /* 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_probe(struct platform_device *pdev)
 
 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");