diff options
Diffstat (limited to 'drivers/media/video/ir-kbd-i2c.c')
-rw-r--r-- | drivers/media/video/ir-kbd-i2c.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c index 0085567a1421..801c736e9328 100644 --- a/drivers/media/video/ir-kbd-i2c.c +++ b/drivers/media/video/ir-kbd-i2c.c | |||
@@ -183,6 +183,58 @@ static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) | |||
183 | return 1; | 183 | return 1; |
184 | } | 184 | } |
185 | 185 | ||
186 | /* The new pinnacle PCTV remote (with the colored buttons) | ||
187 | * | ||
188 | * Ricardo Cerqueira <v4l@cerqueira.org> | ||
189 | */ | ||
190 | |||
191 | int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) | ||
192 | { | ||
193 | unsigned char b[4]; | ||
194 | unsigned int start = 0,parity = 0,code = 0; | ||
195 | |||
196 | /* poll IR chip */ | ||
197 | if (4 != i2c_master_recv(&ir->c,b,4)) { | ||
198 | dprintk(2,"read error\n"); | ||
199 | return -EIO; | ||
200 | } | ||
201 | |||
202 | for (start = 0; start<4; start++) { | ||
203 | if (b[start] == 0x80) { | ||
204 | code=b[(start+3)%4]; | ||
205 | parity=b[(start+2)%4]; | ||
206 | } | ||
207 | } | ||
208 | |||
209 | /* Empty Request */ | ||
210 | if (parity==0) | ||
211 | return 0; | ||
212 | |||
213 | /* Repeating... */ | ||
214 | if (ir->old == parity) | ||
215 | return 0; | ||
216 | |||
217 | |||
218 | ir->old = parity; | ||
219 | |||
220 | /* Reduce code value to fit inside IR_KEYTAB_SIZE | ||
221 | * | ||
222 | * this is the only value that results in 42 unique | ||
223 | * codes < 128 | ||
224 | */ | ||
225 | |||
226 | code %= 0x88; | ||
227 | |||
228 | *ir_raw = code; | ||
229 | *ir_key = code; | ||
230 | |||
231 | dprintk(1,"Pinnacle PCTV key %02x\n", code); | ||
232 | |||
233 | return 1; | ||
234 | } | ||
235 | |||
236 | EXPORT_SYMBOL_GPL(get_key_pinnacle); | ||
237 | |||
186 | /* ----------------------------------------------------------------------- */ | 238 | /* ----------------------------------------------------------------------- */ |
187 | 239 | ||
188 | static void ir_key_poll(struct IR_i2c *ir) | 240 | static void ir_key_poll(struct IR_i2c *ir) |