V4L/DVB (13591): add support for IR on FlyDVB Trio (saa7134)

saa7134: Add support for IR reciever on card LifeView FlyDVB Trio

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[mchehab@redhat.com: CodingStyle fixes and ported upstream]
Tested-by: Petr Fiala <petr.fiala@gmail.com>
Signed-off-by: Lukas Karas <lukas.karas@centrum.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 84 insertions, 0 deletions

diff --git a/drivers/media/video/saa7134/saa7134-cards.c b/drivers/media/video/saa7134/saa7134-cards.c
index 7e40d6d99dd0..03f572708b85 100644
--- a/drivers/media/video/saa7134/saa7134-cards.c
+++ b/drivers/media/video/saa7134/saa7134-cards.c
@@ -7211,9 +7211,31 @@ int saa7134_board_init2(struct saa7134_dev *dev)
         }
         case SAA7134_BOARD_FLYDVB_TRIO:
         {
+                u8 temp = 0;
+                int rc;
                 u8 data[] = { 0x3c, 0x33, 0x62};
                 struct i2c_msg msg = {.addr=0x09, .flags=0, .buf=data, .len = sizeof(data)};
                 i2c_transfer(&dev->i2c_adap, &msg, 1);
+
+                /*
+                 * send weak up message to pic16C505 chip
+                 * @ LifeView FlyDVB Trio
+                 */
+                msg.buf = &temp;
+                msg.addr = 0x0b;
+                msg.len = 1;
+                if (1 != i2c_transfer(&dev->i2c_adap, &msg, 1)) {
+                        printk(KERN_WARNING "%s: send wake up byte to pic16C505"
+                                        "(IR chip) failed\n", dev->name);
+                } else {
+                        msg.flags = I2C_M_RD;
+                        rc = i2c_transfer(&dev->i2c_adap, &msg, 1);
+                        printk(KERN_INFO "%s: probe IR chip @ i2c 0x%02x: %s\n",
+                                   dev->name, msg.addr,
+                                   (1 == rc) ? "yes" : "no");
+                        if (rc == 1)
+                                dev->has_remote = SAA7134_REMOTE_I2C;
+                }
                 break;
         }
         case SAA7134_BOARD_ADS_DUO_CARDBUS_PTV331:
diff --git a/drivers/media/video/saa7134/saa7134-input.c b/drivers/media/video/saa7134/saa7134-input.c
index 744918b1cd47..411a8410620e 100644
--- a/drivers/media/video/saa7134/saa7134-input.c
+++ b/drivers/media/video/saa7134/saa7134-input.c
@@ -127,6 +127,61 @@ static int build_key(struct saa7134_dev *dev)
 
 /* --------------------- Chip specific I2C key builders ----------------- */
 
+static int get_key_flydvb_trio(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+        int gpio;
+        int attempt = 0;
+        unsigned char b;
+
+        /* We need this to access GPI Used by the saa_readl macro. */
+        struct saa7134_dev *dev = ir->c->adapter->algo_data;
+
+        if (dev == NULL) {
+                dprintk("get_key_flydvb_trio: "
+                         "gir->c->adapter->algo_data is NULL!\n");
+                return -EIO;
+        }
+
+        /* rising SAA7134_GPIGPRESCAN reads the status */
+        saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
+        saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
+
+        gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
+
+        if (0x40000 & ~gpio)
+                return 0; /* No button press */
+
+        /* No button press - only before first key pressed */
+        if (b == 0xFF)
+                return 0;
+
+        /* poll IR chip */
+        /* weak up the IR chip */
+        b = 0;
+
+        while (1 != i2c_master_send(ir->c, &b, 1)) {
+                if ((attempt++) < 10) {
+                        /*
+                         * wait a bit for next attempt -
+                         * I don't know how make it better
+                         */
+                        msleep(10);
+                        continue;
+                }
+                i2cdprintk("send wake up byte to pic16C505 (IR chip)"
+                           "failed %dx\n", attempt);
+                return -EIO;
+        }
+        if (1 != i2c_master_recv(ir->c, &b, 1)) {
+                i2cdprintk("read error\n");
+                return -EIO;
+        }
+
+        *ir_key = b;
+        *ir_raw = b;
+        return 1;
+}
+
 static int get_key_msi_tvanywhere_plus(struct IR_i2c *ir, u32 *ir_key,
                                        u32 *ir_raw)
 {
@@ -622,6 +677,7 @@ int saa7134_input_init1(struct saa7134_dev *dev)
                 mask_keyup   = 0x020000;
                 polling      = 50; /* ms */
                 break;
+        break;
         }
         if (NULL == ir_codes) {
                 printk("%s: Oops: IR config error [card=%d]\n",
@@ -788,6 +844,12 @@ void saa7134_probe_i2c_ir(struct saa7134_dev *dev)
         case SAA7134_BOARD_AVERMEDIA_CARDBUS_506:
                 info.addr = 0x40;
                 break;
+        case SAA7134_BOARD_FLYDVB_TRIO:
+                dev->init_data.name = "FlyDVB Trio";
+                dev->init_data.get_key = get_key_flydvb_trio;
+                dev->init_data.ir_codes = &ir_codes_flydvb_table;
+                info.addr = 0x0b;
+                break;
         default:
                 dprintk("No I2C IR support for board %x\n", dev->board);
                 return;