diff options
Diffstat (limited to 'drivers/media/video/ir-kbd-i2c.c')
| -rw-r--r-- | drivers/media/video/ir-kbd-i2c.c | 60 |
1 files changed, 45 insertions, 15 deletions
diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c index 7e66d83fe0ce..fba30a40e9c6 100644 --- a/drivers/media/video/ir-kbd-i2c.c +++ b/drivers/media/video/ir-kbd-i2c.c @@ -150,12 +150,11 @@ static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) return 1; } -/* The new pinnacle PCTV remote (with the colored buttons) +/* Common (grey or coloured) pinnacle PCTV remote handling * - * Ricardo Cerqueira <v4l@cerqueira.org> */ - -int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) +static int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw, + int parity_offset, int marker, int code_modulo) { unsigned char b[4]; unsigned int start = 0,parity = 0,code = 0; @@ -167,9 +166,9 @@ int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) } for (start = 0; start<4; start++) { - if (b[start] == 0x80) { - code=b[(start+3)%4]; - parity=b[(start+2)%4]; + if (b[start] == marker) { + code=b[(start+parity_offset+1)%4]; + parity=b[(start+parity_offset)%4]; } } @@ -181,16 +180,14 @@ int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) if (ir->old == parity) return 0; - ir->old = parity; - /* Reduce code value to fit inside IR_KEYTAB_SIZE - * - * this is the only value that results in 42 unique - * codes < 128 - */ + /* drop special codes when a key is held down a long time for the grey controller + In this case, the second bit of the code is asserted */ + if (marker == 0xfe && (code & 0x40)) + return 0; - code %= 0x88; + code %= code_modulo; *ir_raw = code; *ir_key = code; @@ -200,7 +197,40 @@ int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) return 1; } -EXPORT_SYMBOL_GPL(get_key_pinnacle); +/* The grey pinnacle PCTV remote + * + * There are one issue with this remote: + * - I2c packet does not change when the same key is pressed quickly. The workaround + * is to hold down each key for about half a second, so that another code is generated + * in the i2c packet, and the function can distinguish key presses. + * + * Sylvain Pasche <sylvain.pasche@gmail.com> + */ +int get_key_pinnacle_grey(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) +{ + + return get_key_pinnacle(ir, ir_key, ir_raw, 1, 0xfe, 0xff); +} + +EXPORT_SYMBOL_GPL(get_key_pinnacle_grey); + + +/* The new pinnacle PCTV remote (with the colored buttons) + * + * Ricardo Cerqueira <v4l@cerqueira.org> + */ +int get_key_pinnacle_color(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) +{ + /* code_modulo parameter (0x88) is used to reduce code value to fit inside IR_KEYTAB_SIZE + * + * this is the only value that results in 42 unique + * codes < 128 + */ + + return get_key_pinnacle(ir, ir_key, ir_raw, 2, 0x80, 0x88); +} + +EXPORT_SYMBOL_GPL(get_key_pinnacle_color); /* ----------------------------------------------------------------------- */ |