Staging: ti-st: remove st_get_plat_device
In order to support multiple ST platform devices, a new symbol
'st_get_plat_device' earlier needed to be exported by the arch/XX/brd-XX.c
file which intends to add the ST platform device.
On removing this dependency, now inside ST driver maintain the array of
ST platform devices that would be registered.
As of now let id=0, as and when we end up having such platforms
where mutliple ST devices can exist, id would come from
protocol drivers (BT, FM and GPS) as to on which platform device
they want to register to.
Signed-off-by: Pavan Savoy <pavan_savoy@ti.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/ti-st/st_kim.c b/drivers/staging/ti-st/st_kim.c
index b4a6c7f..9e99463 100644
--- a/drivers/staging/ti-st/st_kim.c
+++ b/drivers/staging/ti-st/st_kim.c
@@ -72,11 +72,26 @@
PROTO_ENTRY(ST_GPS, "GPS"),
};
+#define MAX_ST_DEVICES 3 /* Imagine 1 on each UART for now */
+struct platform_device *st_kim_devices[MAX_ST_DEVICES];
/**********************************************************************/
/* internal functions */
/**
+ * st_get_plat_device -
+ * function which returns the reference to the platform device
+ * requested by id. As of now only 1 such device exists (id=0)
+ * the context requesting for reference can get the id to be
+ * requested by a. The protocol driver which is registering or
+ * b. the tty device which is opened.
+ */
+static struct platform_device *st_get_plat_device(int id)
+{
+ return st_kim_devices[id];
+}
+
+/**
* validate_firmware_response -
* function to return whether the firmware response was proper
* in case of error don't complete so that waiting for proper
@@ -353,7 +368,7 @@
struct kim_data_s *kim_gdata;
pr_info(" %s ", __func__);
- kim_pdev = st_get_plat_device();
+ kim_pdev = st_get_plat_device(0);
kim_gdata = dev_get_drvdata(&kim_pdev->dev);
if (kim_gdata->gpios[type] == -1) {
@@ -574,12 +589,12 @@
* This would enable multiple such platform devices to exist
* on a given platform
*/
-void st_kim_ref(struct st_data_s **core_data)
+void st_kim_ref(struct st_data_s **core_data, int id)
{
struct platform_device *pdev;
struct kim_data_s *kim_gdata;
/* get kim_gdata reference from platform device */
- pdev = st_get_plat_device();
+ pdev = st_get_plat_device(id);
kim_gdata = dev_get_drvdata(&pdev->dev);
*core_data = kim_gdata->core_data;
}
@@ -623,6 +638,7 @@
long *gpios = pdev->dev.platform_data;
struct kim_data_s *kim_gdata;
+ st_kim_devices[pdev->id] = pdev;
kim_gdata = kzalloc(sizeof(struct kim_data_s), GFP_ATOMIC);
if (!kim_gdata) {
pr_err("no mem to allocate");