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-rw-r--r--drivers/misc/ti-st/st_core.c11
-rw-r--r--drivers/misc/ti-st/st_kim.c117
-rw-r--r--include/linux/ti_wilink_st.h19
3 files changed, 26 insertions, 121 deletions
diff --git a/drivers/misc/ti-st/st_core.c b/drivers/misc/ti-st/st_core.c
index f0d24d85207..1847c477c0c 100644
--- a/drivers/misc/ti-st/st_core.c
+++ b/drivers/misc/ti-st/st_core.c
@@ -515,7 +515,6 @@ long st_register(struct st_proto_s *new_proto)
if (test_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state)) {
pr_info(" ST_REG_IN_PROGRESS:%d ", new_proto->chnl_id);
/* fw download in progress */
- st_kim_chip_toggle(new_proto->chnl_id, KIM_GPIO_ACTIVE);
add_channel_to_table(st_gdata, new_proto);
st_gdata->protos_registered++;
@@ -548,10 +547,6 @@ long st_register(struct st_proto_s *new_proto)
return -EINVAL;
}
- /* the chnl_id might require other gpios to be toggled
- */
- st_kim_chip_toggle(new_proto->chnl_id, KIM_GPIO_ACTIVE);
-
clear_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
st_recv = st_int_recv;
@@ -622,12 +617,6 @@ long st_unregister(struct st_proto_s *proto)
st_gdata->protos_registered--;
remove_channel_from_table(st_gdata, proto);
-
- /* kim ignores BT in the below function
- * and handles the rest, BT is toggled
- * only in kim_start and kim_stop
- */
- st_kim_chip_toggle(proto->chnl_id, KIM_GPIO_INACTIVE);
spin_unlock_irqrestore(&st_gdata->lock, flags);
if ((st_gdata->protos_registered == ST_EMPTY) &&
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 2c096ccd53b..9ee4c788aa6 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -390,49 +390,6 @@ static long download_firmware(struct kim_data_s *kim_gdata)
/**********************************************************************/
/* functions called from ST core */
-/* function to toggle the GPIO
- * needs to know whether the GPIO is active high or active low
- */
-void st_kim_chip_toggle(enum proto_type type, enum kim_gpio_state state)
-{
- struct platform_device *kim_pdev;
- struct kim_data_s *kim_gdata;
- pr_info(" %s ", __func__);
-
- kim_pdev = st_get_plat_device(0);
- kim_gdata = dev_get_drvdata(&kim_pdev->dev);
-
- if (kim_gdata->gpios[type] == -1) {
- pr_info("gpio not requested for protocol %d", type);
- return;
- }
- switch (type) {
- case ST_BT:
- /*Do Nothing */
- break;
-
- case ST_FM:
- if (state == KIM_GPIO_ACTIVE)
- gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_LOW);
- else
- gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_HIGH);
- break;
-
- case ST_GPS:
- if (state == KIM_GPIO_ACTIVE)
- gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_HIGH);
- else
- gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_LOW);
- break;
-
- case ST_MAX_CHANNELS:
- default:
- break;
- }
-
- return;
-}
-
/* called from ST Core, when REG_IN_PROGRESS (registration in progress)
* can be because of
* 1. response to read local version
@@ -482,9 +439,9 @@ long st_kim_start(void *kim_data)
do {
/* Configure BT nShutdown to HIGH state */
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
mdelay(5); /* FIXME: a proper toggle */
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_HIGH);
mdelay(100);
/* re-initialize the completion */
INIT_COMPLETION(kim_gdata->ldisc_installed);
@@ -552,11 +509,11 @@ long st_kim_stop(void *kim_data)
}
/* By default configure BT nShutdown to LOW state */
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
mdelay(1);
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_HIGH);
mdelay(1);
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
return err;
}
@@ -685,10 +642,8 @@ struct dentry *kim_debugfs_dir;
static int kim_probe(struct platform_device *pdev)
{
long status;
- long proto;
struct kim_data_s *kim_gdata;
struct ti_st_plat_data *pdata = pdev->dev.platform_data;
- long *gpios = pdata->gpios;
if ((pdev->id != -1) && (pdev->id < MAX_ST_DEVICES)) {
/* multiple devices could exist */
@@ -713,40 +668,19 @@ static int kim_probe(struct platform_device *pdev)
/* refer to itself */
kim_gdata->core_data->kim_data = kim_gdata;
- for (proto = 0; proto < ST_MAX_CHANNELS; proto++) {
- kim_gdata->gpios[proto] = gpios[proto];
- pr_info(" %ld gpio to be requested", gpios[proto]);
+ /* 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;
}
- for (proto = 0; (proto < ST_MAX_CHANNELS)
- && (gpios[proto] != -1); proto++) {
- /* Claim the Bluetooth/FM/GPIO
- * nShutdown gpio from the system
- */
- status = gpio_request(gpios[proto], "kim");
- if (unlikely(status)) {
- pr_err(" gpio %ld request failed ", gpios[proto]);
- proto -= 1;
- while (proto >= 0) {
- if (gpios[proto] != -1)
- gpio_free(gpios[proto]);
- }
- return status;
- }
-
- /* Configure nShutdown GPIO as output=0 */
- status =
- gpio_direction_output(gpios[proto], 0);
- if (unlikely(status)) {
- pr_err(" unable to configure gpio %ld",
- gpios[proto]);
- proto -= 1;
- while (proto >= 0) {
- if (gpios[proto] != -1)
- gpio_free(gpios[proto]);
- }
- 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
*/
@@ -785,23 +719,20 @@ static int kim_remove(struct platform_device *pdev)
{
/* free the GPIOs requested */
struct ti_st_plat_data *pdata = pdev->dev.platform_data;
- long *gpios = pdata->gpios;
- long proto;
struct kim_data_s *kim_gdata;
kim_gdata = dev_get_drvdata(&pdev->dev);
- for (proto = 0; (proto < ST_MAX_CHANNELS)
- && (gpios[proto] != -1); proto++) {
- /* Claim the Bluetooth/FM/GPIO
- * nShutdown gpio from the system
- */
- gpio_free(gpios[proto]);
- }
- pr_info("kim: GPIO Freed");
- debugfs_remove_recursive(kim_debugfs_dir);
+ /* 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");
+
kim_gdata->kim_pdev = NULL;
st_core_exit(kim_gdata->core_data);
diff --git a/include/linux/ti_wilink_st.h b/include/linux/ti_wilink_st.h
index 7885a779c58..7071ec5d011 100644
--- a/include/linux/ti_wilink_st.h
+++ b/include/linux/ti_wilink_st.h
@@ -26,15 +26,6 @@
#define TI_WILINK_ST_H
/**
- * enum kim_gpio_state - Few protocols such as FM have ACTIVE LOW
- * gpio states for their chip/core enable gpios
- */
-enum kim_gpio_state {
- KIM_GPIO_INACTIVE,
- KIM_GPIO_ACTIVE,
-};
-
-/**
* enum proto-type - The protocol on WiLink chips which share a
* common physical interface like UART.
*/
@@ -252,14 +243,11 @@ struct chip_version {
* the ldisc was properly installed.
* @resp_buffer: data buffer for the .bts fw file name.
* @fw_entry: firmware class struct to request/release the fw.
- * @gpios: the list of core/chip enable gpios for BT, FM and GPS cores.
* @rx_state: the rx state for kim's receive func during fw download.
* @rx_count: the rx count for the kim's receive func during fw download.
* @rx_skb: all of fw data might not come at once, and hence data storage for
* whole of the fw response, only HCI_EVENTs and hence diff from ST's
* response.
- * @rfkill: rfkill data for each of the cores to be registered with rfkill.
- * @rf_protos: proto types of the data registered with rfkill sub-system.
* @core_data: ST core's data, which mainly is the tty's disc_data
* @version: chip version available via a sysfs entry.
*
@@ -270,12 +258,10 @@ struct kim_data_s {
struct completion kim_rcvd, ldisc_installed;
char resp_buffer[30];
const struct firmware *fw_entry;
- long gpios[ST_MAX_CHANNELS];
+ long nshutdown;
unsigned long rx_state;
unsigned long rx_count;
struct sk_buff *rx_skb;
- struct rfkill *rfkill[ST_MAX_CHANNELS];
- enum proto_type rf_protos[ST_MAX_CHANNELS];
struct st_data_s *core_data;
struct chip_version version;
unsigned char ldisc_install;
@@ -293,7 +279,6 @@ long st_kim_start(void *);
long st_kim_stop(void *);
void st_kim_recv(void *, const unsigned char *, long count);
-void st_kim_chip_toggle(enum proto_type, enum kim_gpio_state);
void st_kim_complete(void *);
void kim_st_list_protocols(struct st_data_s *, void *);
@@ -426,7 +411,7 @@ struct gps_event_hdr {
/* platform data */
struct ti_st_plat_data {
- long gpios[ST_MAX_CHANNELS]; /* BT, FM and GPS */
+ long nshutdown_gpio;
unsigned char dev_name[UART_DEV_NAME_LEN]; /* uart name */
unsigned char flow_cntrl; /* flow control flag */
unsigned long baud_rate;
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 07:44:38 +0000