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[media] saa7115: Implement i2c_board_info.platform_data

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This patch implements i2c_board_info.platform_data, and some options to
override the default initialization table for the GM7113C and SAA7113
chips.

Signed-off-by: Jon Arne Jørgensen <jonarne@jonarne.no>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Jon Arne Jørgensen
2013-08-03 09:19:37 -03:00
committed by Mauro Carvalho Chehab
parent b9798bc160
commit 2ccf12afe6
3 changed files with 198 additions and 9 deletions
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128
drivers/media/i2c/saa7115.c
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@@ -225,19 +225,25 @@ static const unsigned char saa7111_init[] = {
0x00, 0x00
};
/* SAA7113/GM7113C init codes
* It's important that R_14... R_17 == 0x00
* for the gm7113c chip to deliver stable video
*/
/* This table has one illegal value, and some values that are not
correct according to the datasheet initialization table.
If you need a table with legal/default values tell the driver in
i2c_board_info.platform_data, and you will get the gm7113c_init
table instead. */
/* SAA7113 Init codes */
static const unsigned char saa7113_init[] = {
R_01_INC_DELAY, 0x08,
R_02_INPUT_CNTL_1, 0xc2,
R_03_INPUT_CNTL_2, 0x30,
R_04_INPUT_CNTL_3, 0x00,
R_05_INPUT_CNTL_4, 0x00,
R_06_H_SYNC_START, 0x89,
R_06_H_SYNC_START, 0x89, /* Illegal value -119,
* min. value = -108 (0x94) */
R_07_H_SYNC_STOP, 0x0d,
R_08_SYNC_CNTL, 0x88,
R_08_SYNC_CNTL, 0x88, /* Not datasheet default.
* HTC = VTR mode, should be 0x98 */
R_09_LUMA_CNTL, 0x01,
R_0A_LUMA_BRIGHT_CNTL, 0x80,
R_0B_LUMA_CONTRAST_CNTL, 0x47,
@@ -245,9 +251,43 @@ static const unsigned char saa7113_init[] = {
R_0D_CHROMA_HUE_CNTL, 0x00,
R_0E_CHROMA_CNTL_1, 0x01,
R_0F_CHROMA_GAIN_CNTL, 0x2a,
R_10_CHROMA_CNTL_2, 0x08,
R_10_CHROMA_CNTL_2, 0x08, /* Not datsheet default.
* VRLN enabled, should be 0x00 */
R_11_MODE_DELAY_CNTL, 0x0c,
R_12_RT_SIGNAL_CNTL, 0x07,
R_12_RT_SIGNAL_CNTL, 0x07, /* Not datasheet default,
* should be 0x01 */
R_13_RT_X_PORT_OUT_CNTL, 0x00,
R_14_ANAL_ADC_COMPAT_CNTL, 0x00,
R_15_VGATE_START_FID_CHG, 0x00,
R_16_VGATE_STOP, 0x00,
R_17_MISC_VGATE_CONF_AND_MSB, 0x00,
0x00, 0x00
};
/* GM7113C is a clone of the SAA7113 chip
This init table is copied out of the saa7113 datasheet.
In R_08 we enable "Automatic Field Detection" [AUFD],
this is disabled when saa711x_set_v4lstd is called. */
static const unsigned char gm7113c_init[] = {
R_01_INC_DELAY, 0x08,
R_02_INPUT_CNTL_1, 0xc0,
R_03_INPUT_CNTL_2, 0x33,
R_04_INPUT_CNTL_3, 0x00,
R_05_INPUT_CNTL_4, 0x00,
R_06_H_SYNC_START, 0xe9,
R_07_H_SYNC_STOP, 0x0d,
R_08_SYNC_CNTL, 0x98,
R_09_LUMA_CNTL, 0x01,
R_0A_LUMA_BRIGHT_CNTL, 0x80,
R_0B_LUMA_CONTRAST_CNTL, 0x47,
R_0C_CHROMA_SAT_CNTL, 0x40,
R_0D_CHROMA_HUE_CNTL, 0x00,
R_0E_CHROMA_CNTL_1, 0x01,
R_0F_CHROMA_GAIN_CNTL, 0x2a,
R_10_CHROMA_CNTL_2, 0x00,
R_11_MODE_DELAY_CNTL, 0x0c,
R_12_RT_SIGNAL_CNTL, 0x01,
R_13_RT_X_PORT_OUT_CNTL, 0x00,
R_14_ANAL_ADC_COMPAT_CNTL, 0x00,
R_15_VGATE_START_FID_CHG, 0x00,
@@ -1585,6 +1625,65 @@ static const struct v4l2_subdev_ops saa711x_ops = {
/* ----------------------------------------------------------------------- */
static void saa711x_write_platform_data(struct saa711x_state *state,
struct saa7115_platform_data *data)
{
struct v4l2_subdev *sd = &state->sd;
u8 work;
if (state->ident != GM7113C &&
state->ident != SAA7113)
return;
if (data->saa7113_r08_htc) {
work = saa711x_read(sd, R_08_SYNC_CNTL);
work &= ~SAA7113_R_08_HTC_MASK;
work |= ((*data->saa7113_r08_htc) << SAA7113_R_08_HTC_OFFSET);
saa711x_write(sd, R_08_SYNC_CNTL, work);
}
if (data->saa7113_r10_vrln) {
work = saa711x_read(sd, R_10_CHROMA_CNTL_2);
work &= ~SAA7113_R_10_VRLN_MASK;
if (*data->saa7113_r10_vrln)
work |= (1 << SAA7113_R_10_VRLN_OFFSET);
saa711x_write(sd, R_10_CHROMA_CNTL_2, work);
}
if (data->saa7113_r10_ofts) {
work = saa711x_read(sd, R_10_CHROMA_CNTL_2);
work &= ~SAA7113_R_10_OFTS_MASK;
work |= (*data->saa7113_r10_ofts << SAA7113_R_10_OFTS_OFFSET);
saa711x_write(sd, R_10_CHROMA_CNTL_2, work);
}
if (data->saa7113_r12_rts0) {
work = saa711x_read(sd, R_12_RT_SIGNAL_CNTL);
work &= ~SAA7113_R_12_RTS0_MASK;
work |= (*data->saa7113_r12_rts0 << SAA7113_R_12_RTS0_OFFSET);
/* According to the datasheet,
* SAA7113_RTS_DOT_IN should only be used on RTS1 */
WARN_ON(*data->saa7113_r12_rts0 == SAA7113_RTS_DOT_IN);
saa711x_write(sd, R_12_RT_SIGNAL_CNTL, work);
}
if (data->saa7113_r12_rts1) {
work = saa711x_read(sd, R_12_RT_SIGNAL_CNTL);
work &= ~SAA7113_R_12_RTS1_MASK;
work |= (*data->saa7113_r12_rts1 << SAA7113_R_12_RTS1_OFFSET);
saa711x_write(sd, R_12_RT_SIGNAL_CNTL, work);
}
if (data->saa7113_r13_adlsb) {
work = saa711x_read(sd, R_13_RT_X_PORT_OUT_CNTL);
work &= ~SAA7113_R_13_ADLSB_MASK;
if (*data->saa7113_r13_adlsb)
work |= (1 << SAA7113_R_13_ADLSB_OFFSET);
saa711x_write(sd, R_13_RT_X_PORT_OUT_CNTL, work);
}
}
/**
* saa711x_detect_chip - Detects the saa711x (or clone) variant
* @client: I2C client structure.
@@ -1693,6 +1792,7 @@ static int saa711x_probe(struct i2c_client *client,
struct saa711x_state *state;
struct v4l2_subdev *sd;
struct v4l2_ctrl_handler *hdl;
struct saa7115_platform_data *pdata;
int ident;
char name[CHIP_VER_SIZE + 1];
@@ -1756,14 +1856,20 @@ static int saa711x_probe(struct i2c_client *client,
/* init to 60hz/48khz */
state->crystal_freq = SAA7115_FREQ_24_576_MHZ;
pdata = client->dev.platform_data;
switch (state->ident) {
case SAA7111:
case SAA7111A:
saa711x_writeregs(sd, saa7111_init);
break;
case GM7113C:
saa711x_writeregs(sd, gm7113c_init);
break;
case SAA7113:
saa711x_writeregs(sd, saa7113_init);
if (pdata && pdata->saa7113_force_gm7113c_init)
saa711x_writeregs(sd, gm7113c_init);
else
saa711x_writeregs(sd, saa7113_init);
break;
default:
state->crystal_freq = SAA7115_FREQ_32_11_MHZ;
@@ -1771,6 +1877,10 @@ static int saa711x_probe(struct i2c_client *client,
}
if (state->ident > SAA7111A && state->ident != GM7113C)
saa711x_writeregs(sd, saa7115_init_misc);
if (pdata)
saa711x_write_platform_data(state, pdata);
saa711x_set_v4lstd(sd, V4L2_STD_NTSC);
v4l2_ctrl_handler_setup(hdl);