Commit ae763db4 authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull drivers/misc fix from Greg Kroah-Hartman:
 "Here is a single revert for the ti-st misc driver, fixing problem that
  was introduced in 3.7-rc1 that has been bothering people."

* tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Revert "drivers/misc/ti-st: remove gpio handling"
parents 6f48ea58 a7e2ca17
......@@ -468,6 +468,11 @@ 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 */
......@@ -509,7 +514,8 @@ 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) invoke platform's chip disabling routine.
* (c) reset BT_EN - pull down nshutdown at the end.
* (d) invoke platform's chip disabling routine.
*/
long st_kim_stop(void *kim_data)
{
......@@ -541,6 +547,13 @@ long st_kim_stop(void *kim_data)
err = -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);
......@@ -733,6 +746,20 @@ 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;
err = gpio_request(kim_gdata->nshutdown, "kim");
if (unlikely(err)) {
pr_err(" gpio %ld request failed ", kim_gdata->nshutdown);
return err;
}
/* Configure nShutdown GPIO as output=0 */
err = gpio_direction_output(kim_gdata->nshutdown, 0);
if (unlikely(err)) {
pr_err(" unable to configure gpio %ld", kim_gdata->nshutdown);
return err;
}
/* get reference of pdev for request_firmware
*/
kim_gdata->kim_pdev = pdev;
......@@ -779,10 +806,18 @@ 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");
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment