[media] lirc_zilog: Remove use of deprecated struct i2c_adapter.id field

Remove use of deprecated struct i2c_adapter.id field.  In the process,
perform different detection of the HD PVR's Z8 IR microcontroller versus
the other Hauppauge cards with the Z8 IR microcontroller.

Also added a comment about probe() function behavior that needs to be
fixed.

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/staging/lirc/lirc_zilog.c b/drivers/staging/lirc/lirc_zilog.c
index 52be6de042adf47e5aa8ae08ab33ad0ed81f5093..ad29bb1275ab260dd37bb28440b2cbc80e3d8fbf 100644 (file)
--- a/drivers/staging/lirc/lirc_zilog.c
+++ b/drivers/staging/lirc/lirc_zilog.c
@@ -66,6 +66,7 @@ struct IR {
        /* Device info */
        struct mutex ir_lock;
        int open;
+       bool is_hdpvr;
 
        /* RX device */
        struct i2c_client c_rx;
@@ -206,16 +207,12 @@ static int add_to_buf(struct IR *ir)
                }
 
                /* key pressed ? */
-#ifdef I2C_HW_B_HDPVR
-               if (ir->c_rx.adapter->id == I2C_HW_B_HDPVR) {
+               if (ir->is_hdpvr) {
                        if (got_data && (keybuf[0] == 0x80))
                                return 0;
                        else if (got_data && (keybuf[0] == 0x00))
                                return -ENODATA;
                } else if ((ir->b[0] & 0x80) == 0)
-#else
-               if ((ir->b[0] & 0x80) == 0)
-#endif
                        return got_data ? 0 : -ENODATA;
 
                /* look what we have */
@@ -841,15 +838,15 @@ static int send_code(struct IR *ir, unsigned int code, unsigned int key)
                return ret < 0 ? ret : -EFAULT;
        }
 
-#ifdef I2C_HW_B_HDPVR
        /*
         * The sleep bits aren't necessary on the HD PVR, and in fact, the
         * last i2c_master_recv always fails with a -5, so for now, we're
         * going to skip this whole mess and say we're done on the HD PVR
         */
-       if (ir->c_rx.adapter->id == I2C_HW_B_HDPVR)
-               goto done;
-#endif
+       if (ir->is_hdpvr) {
+               dprintk("sent code %u, key %u\n", code, key);
+               return 0;
+       }
 
        /*
         * This bit NAKs until the device is ready, so we retry it
@@ -1111,12 +1108,14 @@ static int ir_remove(struct i2c_client *client);
 static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id);
 static int ir_command(struct i2c_client *client, unsigned int cmd, void *arg);
 
+#define ID_FLAG_TX     0x01
+#define ID_FLAG_HDPVR  0x02
+
 static const struct i2c_device_id ir_transceiver_id[] = {
-       /* Generic entry for any IR transceiver */
-       { "ir_video", 0 },
-       /* IR device specific entries should be added here */
-       { "ir_tx_z8f0811_haup", 0 },
-       { "ir_rx_z8f0811_haup", 0 },
+       { "ir_tx_z8f0811_haup",  ID_FLAG_TX                 },
+       { "ir_rx_z8f0811_haup",  0                          },
+       { "ir_tx_z8f0811_hdpvr", ID_FLAG_HDPVR | ID_FLAG_TX },
+       { "ir_rx_z8f0811_hdpvr", ID_FLAG_HDPVR              },
        { }
 };
 
@@ -1196,9 +1195,24 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
        int ret;
        int have_rx = 0, have_tx = 0;
 
-       dprintk("%s: adapter id=0x%x, client addr=0x%02x\n",
-               __func__, adap->id, client->addr);
+       dprintk("%s: adapter name (%s) nr %d, i2c_device_id name (%s), "
+               "client addr=0x%02x\n",
+               __func__, adap->name, adap->nr, id->name, client->addr);
 
+       /*
+        * FIXME - This probe function probes both the Tx and Rx
+        * addresses of the IR microcontroller.
+        *
+        * However, the I2C subsystem is passing along one I2C client at a
+        * time, based on matches to the ir_transceiver_id[] table above.
+        * The expectation is that each i2c_client address will be probed
+        * individually by drivers so the I2C subsystem can mark all client
+        * addresses as claimed or not.
+        *
+        * This probe routine causes only one of the client addresses, TX or RX,
+        * to be claimed.  This will cause a problem if the I2C subsystem is
+        * subsequently triggered to probe unclaimed clients again.
+        */
        /*
         * The external IR receiver is at i2c address 0x71.
         * The IR transmitter is at 0x70.
@@ -1241,6 +1255,7 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
        mutex_init(&ir->ir_lock);
        mutex_init(&ir->buf_lock);
        ir->need_boot = 1;
+       ir->is_hdpvr = (id->driver_data & ID_FLAG_HDPVR) ? true : false;
 
        memcpy(&ir->l, &lirc_template, sizeof(struct lirc_driver));
        ir->l.minor = -1;