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V4L/DVB (8395): saa7134: Fix Kbuild dependency of ir-kbd-i2c

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Currently, saa7134 is dependent of ir-kbd-i2c, since it uses a symbol that is
defined there. However, as this symbol is used only on saa7134, there's no
sense on keeping it defined there (or on ir-commons).

So, let's move it to saa7134 and remove one symbol for being exported.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab 2008-07-17 22:31:29 -03:00
parent 4db16db4f6
commit 1c22dad8ab
3 changed files with 78 additions and 85 deletions
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82
drivers/media/video/ir-kbd-i2c.c
View File

@ -194,88 +194,6 @@ static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
return 1;
}
/* Common (grey or coloured) pinnacle PCTV remote handling
*
*/
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;
/* poll IR chip */
if (4 != i2c_master_recv(&ir->c,b,4)) {
dprintk(2,"read error\n");
return -EIO;
}
for (start = 0; start < ARRAY_SIZE(b); start++) {
if (b[start] == marker) {
code=b[(start+parity_offset+1)%4];
parity=b[(start+parity_offset)%4];
}
}
/* Empty Request */
if (parity==0)
return 0;
/* Repeating... */
if (ir->old == parity)
return 0;
ir->old = parity;
/* 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 %= code_modulo;
*ir_raw = code;
*ir_key = code;
dprintk(1,"Pinnacle PCTV key %02x\n", code);
return 1;
}
/* 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);
/* ----------------------------------------------------------------------- */
static void ir_key_poll(struct IR_i2c *ir)

78
drivers/media/video/saa7134/saa7134-input.c
View File

@ -198,6 +198,84 @@ static int get_key_beholdm6xx(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
return 1;
}
/* Common (grey or coloured) pinnacle PCTV remote handling
*
*/
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;
/* poll IR chip */
if (4 != i2c_master_recv(&ir->c, b, 4)) {
i2cdprintk("read error\n");
return -EIO;
}
for (start = 0; start < ARRAY_SIZE(b); start++) {
if (b[start] == marker) {
code=b[(start+parity_offset + 1) % 4];
parity=b[(start+parity_offset) % 4];
}
}
/* Empty Request */
if (parity == 0)
return 0;
/* Repeating... */
if (ir->old == parity)
return 0;
ir->old = parity;
/* 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 %= code_modulo;
*ir_raw = code;
*ir_key = code;
i2cdprintk("Pinnacle PCTV key %02x\n", code);
return 1;
}
/* 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>
*/
static 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);
}
/* The new pinnacle PCTV remote (with the colored buttons)
*
* Ricardo Cerqueira <v4l@cerqueira.org>
*/
static 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);
}
void saa7134_input_irq(struct saa7134_dev *dev)
{
struct card_ir *ir = dev->remote;

3
include/media/ir-kbd-i2c.h
View File

@ -19,7 +19,4 @@ struct IR_i2c {
char phys[32];
int (*get_key)(struct IR_i2c*, u32*, u32*);
};
int get_key_pinnacle_grey(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
int get_key_pinnacle_color(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
#endif