V4L/DVB (7595): Improve generic support for setting gpio values

em28xx based devices with xc3028 may require some specific gpio values.
This patch adds a generic handling for such values.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 21 insertions, 2 deletions

diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index 96a56faeb77b..00d2f62142e3 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -218,6 +218,21 @@ enum em28xx_decoder {
         EM28XX_SAA7114
 };
 
+#define MAX_GPIO 2
+struct gpio_ctl {
+                /* Register to be set */
+        unsigned char reg;
+                /* Initial/final value */
+        unsigned char val;
+                /* reset value - if set, it will do:
+                   val1 - val2 - val1
+                 */
+        unsigned char rst;
+                /* Sleep times
+                 */
+        unsigned int  t1, t2, t3;
+};
+
 struct em28xx_board {
         char *name;
         int vchannels;
@@ -233,7 +248,8 @@ struct em28xx_board {
         unsigned int max_range_640_480:1;
         unsigned int has_dvb:1;
 
-        unsigned int analog_gpio;
+        struct gpio_ctl analog_gpio[MAX_GPIO];
+        struct gpio_ctl digital_gpio[MAX_GPIO];
 
         enum em28xx_decoder decoder;
 
@@ -293,7 +309,6 @@ struct em28xx {
         char name[30];          /* name (including minor) of the device */
         int model;              /* index in the device_data struct */
         int devno;              /* marks the number of this device */
-        unsigned int analog_gpio;
         unsigned int is_em2800:1;
         unsigned int has_msp34xx:1;
         unsigned int has_tda9887:1;
@@ -303,6 +318,9 @@ struct em28xx {
         unsigned int max_range_640_480:1;
         unsigned int has_dvb:1;
 
+        struct gpio_ctl (*analog_gpio)[MAX_GPIO];
+        struct gpio_ctl (*digital_gpio)[MAX_GPIO];
+
         int video_inputs;       /* number of video inputs */
         struct list_head        devlist;
 
@@ -443,6 +461,7 @@ extern struct em28xx_board em28xx_boards[];
 extern struct usb_device_id em28xx_id_table[];
 extern const unsigned int em28xx_bcount;
 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
+int em28xx_tuner_callback(void *ptr, int command, int arg);
 
 /* Provided by em28xx-input.c */
 /* TODO: Check if the standard get_key handlers on ir-common can be used */