drivers:misc: ti-st: register with channel IDs

The architecture of shared transport had begun with individual
protocols like bluetooth, fm and gps telling the shared transport
what sort of protocol they are and then expecting the ST driver
to parse the incoming data from chip and forward data only
relevant to the protocol drivers.

This change would mean each protocol drivers would also send
information to ST driver as to how to intrepret their protocol
data coming out of the chip.

Signed-off-by: Pavan Savoy <pavan_savoy@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 27 insertions, 29 deletions

diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 73b6c8b0e869..707c85826417 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -32,11 +32,7 @@
 #include <linux/sched.h>
 #include <linux/rfkill.h>
 
-/* understand BT events for fw response */
-#include <net/bluetooth/bluetooth.h>
-#include <net/bluetooth/hci_core.h>
-#include <net/bluetooth/hci.h>
-
+#include <linux/skbuff.h>
 #include <linux/ti_wilink_st.h>
 
 
@@ -134,7 +130,7 @@ static inline int kim_check_data_len(struct kim_data_s *kim_gdata, int len)
 		/* Packet header has non-zero payload length and
 		 * we have enough space in created skb. Lets read
 		 * payload data */
-		kim_gdata->rx_state = ST_BT_W4_DATA;
+		kim_gdata->rx_state = ST_W4_DATA;
 		kim_gdata->rx_count = len;
 		return len;
 	}
@@ -158,8 +154,8 @@ void kim_int_recv(struct kim_data_s *kim_gdata,
 	const unsigned char *data, long count)
 {
 	const unsigned char *ptr;
-	struct hci_event_hdr *eh;
 	int len = 0, type = 0;
+	unsigned char *plen;
 
 	pr_debug("%s", __func__);
 	/* Decode received bytes here */
@@ -183,29 +179,27 @@ void kim_int_recv(struct kim_data_s *kim_gdata,
 			/* Check ST RX state machine , where are we? */
 			switch (kim_gdata->rx_state) {
 				/* Waiting for complete packet ? */
-			case ST_BT_W4_DATA:
+			case ST_W4_DATA:
 				pr_debug("Complete pkt received");
 				validate_firmware_response(kim_gdata);
 				kim_gdata->rx_state = ST_W4_PACKET_TYPE;
 				kim_gdata->rx_skb = NULL;
 				continue;
 				/* Waiting for Bluetooth event header ? */
-			case ST_BT_W4_EVENT_HDR:
-				eh = (struct hci_event_hdr *)kim_gdata->
-				    rx_skb->data;
-				pr_debug("Event header: evt 0x%2.2x"
-					   "plen %d", eh->evt, eh->plen);
-				kim_check_data_len(kim_gdata, eh->plen);
+			case ST_W4_HEADER:
+				plen =
+				(unsigned char *)&kim_gdata->rx_skb->data[1];
+				pr_debug("event hdr: plen 0x%02x\n", *plen);
+				kim_check_data_len(kim_gdata, *plen);
 				continue;
 			}	/* end of switch */
 		}		/* end of if rx_state */
 		switch (*ptr) {
 			/* Bluetooth event packet? */
-		case HCI_EVENT_PKT:
-			pr_info("Event packet");
-			kim_gdata->rx_state = ST_BT_W4_EVENT_HDR;
-			kim_gdata->rx_count = HCI_EVENT_HDR_SIZE;
-			type = HCI_EVENT_PKT;
+		case 0x04:
+			kim_gdata->rx_state = ST_W4_HEADER;
+			kim_gdata->rx_count = 2;
+			type = *ptr;
 			break;
 		default:
 			pr_info("unknown packet");
@@ -216,16 +210,18 @@ void kim_int_recv(struct kim_data_s *kim_gdata,
 		ptr++;
 		count--;
 		kim_gdata->rx_skb =
-		    bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+			alloc_skb(1024+8, GFP_ATOMIC);
 		if (!kim_gdata->rx_skb) {
 			pr_err("can't allocate mem for new packet");
 			kim_gdata->rx_state = ST_W4_PACKET_TYPE;
 			kim_gdata->rx_count = 0;
 			return;
 		}
-		bt_cb(kim_gdata->rx_skb)->pkt_type = type;
+		skb_reserve(kim_gdata->rx_skb, 8);
+		kim_gdata->rx_skb->cb[0] = 4;
+		kim_gdata->rx_skb->cb[1] = 0;
+
 	}
-	pr_info("done %s", __func__);
 	return;
 }
 
@@ -398,7 +394,7 @@ void st_kim_chip_toggle(enum proto_type type, enum kim_gpio_state state)
 			gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_LOW);
 		break;
 
-	case ST_MAX:
+	case ST_MAX_CHANNELS:
 	default:
 		break;
 	}
@@ -416,7 +412,6 @@ void st_kim_recv(void *disc_data, const unsigned char *data, long count)
 	struct st_data_s	*st_gdata = (struct st_data_s *)disc_data;
 	struct kim_data_s	*kim_gdata = st_gdata->kim_data;
 
-	pr_info(" %s ", __func__);
 	/* copy to local buffer */
 	if (unlikely(data[4] == 0x01 && data[5] == 0x10 && data[0] == 0x04)) {
 		/* must be the read_ver_cmd */
@@ -578,7 +573,7 @@ static int kim_toggle_radio(void *data, bool blocked)
 		else
 			st_kim_chip_toggle(type, KIM_GPIO_ACTIVE);
 	break;
-	case ST_MAX:
+	case ST_MAX_CHANNELS:
 		pr_err(" wrong proto type ");
 	break;
 	}
@@ -664,12 +659,13 @@ 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; proto++) {
+	for (proto = 0; proto < ST_MAX_CHANNELS; proto++) {
 		kim_gdata->gpios[proto] = gpios[proto];
 		pr_info(" %ld gpio to be requested", gpios[proto]);
 	}
 
-	for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) {
+	for (proto = 0; (proto < ST_MAX_CHANNELS)
+			&& (gpios[proto] != -1); proto++) {
 		/* Claim the Bluetooth/FM/GPIO
 		 * nShutdown gpio from the system
 		 */
@@ -704,7 +700,8 @@ static int kim_probe(struct platform_device *pdev)
 	init_completion(&kim_gdata->kim_rcvd);
 	init_completion(&kim_gdata->ldisc_installed);
 
-	for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) {
+	for (proto = 0; (proto < ST_MAX_CHANNELS)
+			&& (gpios[proto] != -1); proto++) {
 		/* TODO: should all types be rfkill_type_bt ? */
 		kim_gdata->rf_protos[proto] = proto;
 		kim_gdata->rfkill[proto] = rfkill_alloc(protocol_names[proto],
@@ -752,7 +749,8 @@ static int kim_remove(struct platform_device *pdev)
 
 	kim_gdata = dev_get_drvdata(&pdev->dev);
 
-	for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) {
+	for (proto = 0; (proto < ST_MAX_CHANNELS)
+		&& (gpios[proto] != -1); proto++) {
 		/* Claim the Bluetooth/FM/GPIO
 		 * nShutdown gpio from the system
 		 */