[PATCH] v4l: 784: several improvement on i2c ir handling for em2820

- Several Improvement on I2C IR handling for em2820:
        - moved Pinnacle IR table (ir_codes_em2820) to em2820-input.c
        - IR struct renamed and moved to a header file.
        - New file to handle em2820-specific IR.
        - Some cleanups.
        - attach now detects I2C IR and calls em2820-specific IR code
        - IR compat code moved to compat.h
        - New header with struct IR_i2c there, to allow it to be
          used by board-specific input handlers.

- Some improvements at em28xx board detection:
        - Board detection message improved to show interface and class.
        - Now it doesn't touch audio interfaces.

Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

5 files changed, 196 insertions, 35 deletions

diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
index 91c70ebd0ea4..919520f89975 100644
--- a/drivers/media/video/em28xx/em28xx-cards.c
+++ b/drivers/media/video/em28xx/em28xx-cards.c
@@ -143,7 +143,7 @@ struct em2820_board em2820_boards[] = {
                 .tuner_type     = TUNER_PHILIPS_PAL,
                 .tda9887_conf   = TDA9887_PRESENT|TDA9887_PORT1_ACTIVE|TDA9887_PORT2_ACTIVE,
                 .has_tuner      = 1,
-                .decoder      = EM2820_SAA7114,
+                .decoder        = EM2820_SAA7114,
                 .input          = {{
                         .type     = EM2820_VMUX_TELEVISION,
                         .vmux     = 2,
@@ -250,6 +250,7 @@ void em2820_card_setup(struct em2820 *dev)
                 struct tveeprom tv;
 #ifdef CONFIG_MODULES
                 request_module("tveeprom");
+                request_module("ir-kbd-i2c");
 #endif
                 /* Call first TVeeprom */
 
diff --git a/drivers/media/video/em28xx/em28xx-i2c.c b/drivers/media/video/em28xx/em28xx-i2c.c
index a7b6f678f979..f6bfc038777e 100644
--- a/drivers/media/video/em28xx/em28xx-i2c.c
+++ b/drivers/media/video/em28xx/em28xx-i2c.c
@@ -26,10 +26,10 @@
 #include <linux/kernel.h>
 #include <linux/usb.h>
 #include <linux/i2c.h>
-#include <media/tuner.h>
 #include <linux/video_decoder.h>
 
 #include "em2820.h"
+#include <media/tuner.h>
 
 /* ----------------------------------------------------------- */
 
@@ -41,14 +41,11 @@ static unsigned int i2c_debug = 0;
 module_param(i2c_debug, int, 0644);
 MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
 
-#define dprintk(fmt, args...) if (i2c_debug) do {\
-                        printk(KERN_DEBUG "%s: %s: " fmt "\n",\
-                        dev->name, __FUNCTION__ , ##args); } while (0)
-#define dprintk1(fmt, args...) if (i2c_debug) do{ \
-                        printk(KERN_DEBUG "%s: %s: " fmt, \
-                        dev->name, __FUNCTION__ , ##args); } while (0)
-#define dprintk2(fmt, args...) if (i2c_debug) do {\
+#define dprintk1(lvl,fmt, args...) if (i2c_debug>=lvl) do {\
                         printk(fmt , ##args); } while (0)
+#define dprintk2(lvl,fmt, args...) if (i2c_debug>=lvl) do{ \
+                        printk(KERN_DEBUG "%s at %s: " fmt, \
+                        dev->name, __FUNCTION__ , ##args); } while (0)
 
 /*
  * em2800_i2c_send_max4()
@@ -238,7 +235,7 @@ static int em2820_i2c_xfer(struct i2c_adapter *i2c_adap,
                 return 0;
         for (i = 0; i < num; i++) {
                 addr = msgs[i].addr << 1;
-                dprintk1("%s %s addr=%x len=%d:",
+                dprintk2(2,"%s %s addr=%x len=%d:",
                          (msgs[i].flags & I2C_M_RD) ? "read" : "write",
                          i == num - 1 ? "stop" : "nonstop", addr, msgs[i].len);
                 if (!msgs[i].len) {     /* no len: check only for device presence */
@@ -247,7 +244,7 @@ static int em2820_i2c_xfer(struct i2c_adapter *i2c_adap,
                         else
                                 rc = em2820_i2c_check_for_device(dev, addr);
                         if (rc < 0) {
-                                dprintk2(" no device\n");
+                                dprintk2(2," no device\n");
                                 return rc;
                         }
 
@@ -261,14 +258,14 @@ static int em2820_i2c_xfer(struct i2c_adapter *i2c_adap,
                                 rc = em2820_i2c_recv_bytes(dev, addr,
                                                            msgs[i].buf,
                                                            msgs[i].len);
-                        if (i2c_debug) {
+                        if (i2c_debug>=2) {
                                 for (byte = 0; byte < msgs[i].len; byte++) {
                                         printk(" %02x", msgs[i].buf[byte]);
                                 }
                         }
                 } else {
                         /* write bytes */
-                        if (i2c_debug) {
+                        if (i2c_debug>=2) {
                                 for (byte = 0; byte < msgs[i].len; byte++)
                                         printk(" %02x", msgs[i].buf[byte]);
                         }
@@ -284,13 +281,13 @@ static int em2820_i2c_xfer(struct i2c_adapter *i2c_adap,
                         if (rc < 0)
                                 goto err;
                 }
-                if (i2c_debug)
+                if (i2c_debug>=2)
                         printk("\n");
         }
 
         return num;
       err:
-        dprintk2(" ERROR: %i\n", rc);
+        dprintk2(2," ERROR: %i\n", rc);
         return rc;
 }
 
@@ -436,26 +433,34 @@ static int attach_inform(struct i2c_client *client)
 {
         struct em2820 *dev = client->adapter->algo_data;
 
-        dprintk("address %x", client->addr << 1);
         switch (client->addr << 1) {
                 case 0x86:
                         em2820_i2c_call_clients(dev, TDA9887_SET_CONFIG, &dev->tda9887_conf);
                         break;
                 case 0x4a:
-                        dprintk1("attach_inform: saa7113 detected.\n");
+                        dprintk1(1,"attach_inform: saa7113 detected.\n");
                         break;
                 case 0xa0:
-                        dprintk1("attach_inform: eeprom detected.\n");
+                        dprintk1(1,"attach_inform: eeprom detected.\n");
+                        break;
+                case 0x60:
+                case 0x8e:
+                {
+                        struct IR_i2c *ir = i2c_get_clientdata(client);
+                        dprintk1(1,"attach_inform: IR detected (%s).\n",ir->phys);
+                        em2820_set_ir(dev,ir);
                         break;
+                }
                 case 0x80:
                 case 0x88:
-                        dprintk1("attach_inform: msp34xx detected.\n");
+                        dprintk1(1,"attach_inform: msp34xx detected.\n");
                         break;
                 case 0xb8:
                 case 0xba:
-                        dprintk1("attach_inform: tvp5150 detected.\n");
+                        dprintk1(1,"attach_inform: tvp5150 detected.\n");
                         break;
                 default:
+                        dprintk1(1,"attach inform: detected I2C address %x\n", client->addr << 1);
                         dev->tuner_addr = client->addr;
                         em2820_set_tuner(-1, client);
         }
diff --git a/drivers/media/video/em28xx/em28xx-input.c b/drivers/media/video/em28xx/em28xx-input.c
new file mode 100644
index 000000000000..d6b3e15a0350
--- /dev/null
+++ b/drivers/media/video/em28xx/em28xx-input.c
@@ -0,0 +1,150 @@
+/*
+ *
+ * handle saa7134 IR remotes via linux kernel input layer.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/usb.h>
+
+#include "em2820.h"
+
+static unsigned int disable_ir = 0;
+module_param(disable_ir, int, 0444);
+MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
+
+static unsigned int ir_debug = 0;
+module_param(ir_debug, int, 0644);
+MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
+
+#define dprintk(fmt, arg...)    if (ir_debug) \
+        printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
+
+/* ---------------------------------------------------------------------- */
+
+static IR_KEYTAB_TYPE ir_codes_em_pinnacle[IR_KEYTAB_SIZE] = {
+        [  0 ] = KEY_CHANNEL,
+        [  1 ] = KEY_SELECT,
+        [  2 ] = KEY_MUTE,
+        [  3 ] = KEY_POWER,
+        [  4 ] = KEY_KP1,
+        [  5 ] = KEY_KP2,
+        [  6 ] = KEY_KP3,
+        [  7 ] = KEY_CHANNELUP,
+        [  8 ] = KEY_KP4,
+        [  9 ] = KEY_KP5,
+        [ 10 ] = KEY_KP6,
+
+        [ 11 ] = KEY_CHANNELDOWN,
+        [ 12 ] = KEY_KP7,
+        [ 13 ] = KEY_KP8,
+        [ 14 ] = KEY_KP9,
+        [ 15 ] = KEY_VOLUMEUP,
+        [ 16 ] = KEY_KP0,
+        [ 17 ] = KEY_MENU,
+        [ 18 ] = KEY_PRINT,
+
+        [ 19 ] = KEY_VOLUMEDOWN,
+        [ 21 ] = KEY_PAUSE,
+        [ 23 ] = KEY_RECORD,
+        [ 24 ] = KEY_REWIND,
+        [ 25 ] = KEY_PLAY,
+        [ 27 ] = KEY_BACKSPACE,
+        [ 29 ] = KEY_STOP,
+        [ 31 ] = KEY_ZOOM,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static int get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+        unsigned char buf[2];
+        unsigned char code;
+
+        /* poll IR chip */
+        if (2 != i2c_master_recv(&ir->c,buf,2))
+                return -EIO;
+
+        /* Does eliminate repeated parity code */
+        if (buf[1]==0xff)
+                return 0;
+
+        /* avoid fast reapeating */
+        if (buf[1]==ir->old)
+                return 0;
+        ir->old=buf[1];
+
+        /* Rearranges bits to the right order */
+        code=    ((buf[0]&0x01)<<5) | /* 0010 0000 */
+                 ((buf[0]&0x02)<<3) | /* 0001 0000 */
+                 ((buf[0]&0x04)<<1) | /* 0000 1000 */
+                 ((buf[0]&0x08)>>1) | /* 0000 0100 */
+                 ((buf[0]&0x10)>>3) | /* 0000 0010 */
+                 ((buf[0]&0x20)>>5);  /* 0000 0001 */
+
+        dprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x)\n",code,buf[0]);
+
+        /* return key */
+        *ir_key = code;
+        *ir_raw = code;
+        return 1;
+}
+
+/* ----------------------------------------------------------------------- */
+void em2820_set_ir(struct em2820 * dev,struct IR_i2c *ir)
+{
+        if (disable_ir)
+                return ;
+
+        /* detect & configure */
+        switch (dev->model) {
+        case (EM2800_BOARD_UNKNOWN):
+                break;
+        case (EM2820_BOARD_UNKNOWN):
+                break;
+        case (EM2820_BOARD_TERRATEC_CINERGY_250):
+                break;
+        case (EM2820_BOARD_PINNACLE_USB_2):
+                ir->ir_codes = ir_codes_em_pinnacle;
+                break;
+        case (EM2820_BOARD_HAUPPAUGE_WINTV_USB_2):
+                ir->ir_codes = ir_codes_hauppauge_new;
+                ir->get_key = get_key_em_haup;
+                snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM2840 Hauppage)");
+                break;
+        case (EM2820_BOARD_MSI_VOX_USB_2):
+                break;
+        case (EM2800_BOARD_TERRATEC_CINERGY_200):
+                break;
+        case (EM2800_BOARD_LEADTEK_WINFAST_USBII):
+                break;
+        case (EM2800_BOARD_KWORLD_USB2800):
+                break;
+        }
+}
+
+/* ----------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index d3a959b9ee64..f3fc44b352b4 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -28,10 +28,10 @@
 #include <linux/kernel.h>
 #include <linux/usb.h>
 #include <linux/i2c.h>
-#include <media/tuner.h>
 #include <linux/video_decoder.h>
 
 #include "em2820.h"
+#include <media/tuner.h>
 
 #define DRIVER_AUTHOR "Markus Rechberger <mrechberger@gmail.com>, " \
                         "Ludovico Cavedon <cavedon@sssup.it>, " \
@@ -1699,15 +1699,22 @@ static int em2820_usb_probe(struct usb_interface *interface,
         struct usb_device *udev;
         struct em2820 *dev = NULL;
         int retval = -ENODEV;
-        int model,i,nr;
+        int model,i,nr,ifnum;
 
         udev = usb_get_dev(interface_to_usbdev(interface));
-        endpoint = &interface->cur_altsetting->endpoint[1].desc;
+        ifnum = interface->altsetting[0].desc.bInterfaceNumber;
+
+        em2820_err(DRIVER_NAME " new device (%04x:%04x): interface %i, class %i\n",
+                        udev->descriptor.idVendor,udev->descriptor.idProduct,
+                        ifnum,
+                        interface->altsetting[0].desc.bInterfaceClass);
 
         /* Don't register audio interfaces */
-        if (interface->altsetting[1].desc.bInterfaceClass == USB_CLASS_AUDIO)
+        if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO)
                 return -ENODEV;
 
+        endpoint = &interface->cur_altsetting->endpoint[1].desc;
+
         /* check if the the device has the iso in endpoint at the correct place */
         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
             USB_ENDPOINT_XFER_ISOC) {
diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index 4115938a1731..31b23f0db051 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -27,6 +27,7 @@
 
 #include <linux/videodev.h>
 #include <linux/i2c.h>
+#include <media/ir-kbd-i2c.h>
 
 /* Boards supported by driver */
 
@@ -53,19 +54,12 @@
 /* number of buffers for isoc transfers */
 #define EM2820_NUM_BUFS 5
 
-/* number of packets for each buffer */
-// windows requests only 40 packets .. so we better do the same
-// this is what I found out for all alternate numbers there!
-
+/* number of packets for each buffer
+   windows requests only 40 packets .. so we better do the same
+   this is what I found out for all alternate numbers there!
+ */
 #define EM2820_NUM_PACKETS 40
 
-/* packet size for each packet */
-/* no longer needed: read from endpoint descriptor */
-//#define EM2820_MAX_PACKET_SIZE 3072 //7
-//#define EM2820_MAX_PACKET_SIZE 2892 //6
-//#define EM2820_MAX_PACKET_SIZE 2580 //5
-//#define EM2820_MAX_PACKET_SIZE 1448 //2
-
 /* default alternate; 0 means choose the best */
 #define EM2820_PINOUT 0
 #define EM2820_MAX_ALT 7
@@ -292,6 +286,10 @@ void em2820_i2c_call_clients(struct em2820 *dev, unsigned int cmd, void *arg);
 int em2820_i2c_register(struct em2820 *dev);
 int em2820_i2c_unregister(struct em2820 *dev);
 
+/* Provided by em2820-input.c */
+
+void em2820_set_ir(struct em2820 * dev,struct IR_i2c *ir);
+
 /* Provided by em2820-core.c */
 
 void em2820_print_ioctl(char *name, unsigned int cmd);