diff options
Diffstat (limited to 'linux/drivers/media/video/cx18/cx18-av-firmware.c')
| -rw-r--r-- | linux/drivers/media/video/cx18/cx18-av-firmware.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/linux/drivers/media/video/cx18/cx18-av-firmware.c b/linux/drivers/media/video/cx18/cx18-av-firmware.c index ab99030dc..b9e8cc5d2 100644 --- a/linux/drivers/media/video/cx18/cx18-av-firmware.c +++ b/linux/drivers/media/video/cx18/cx18-av-firmware.c @@ -24,7 +24,13 @@ #include "cx18-io.h" #include <linux/firmware.h> -#define CX18_AUDIO_ENABLE 0xc72014 +#define CX18_AUDIO_ENABLE 0xc72014 +#define CX18_AI1_MUX_MASK 0x30 +#define CX18_AI1_MUX_I2S1 0x00 +#define CX18_AI1_MUX_I2S2 0x10 +#define CX18_AI1_MUX_843_I2S 0x20 +#define CX18_AI1_MUX_INVALID 0x30 + #define FWFILE "v4l-cx23418-dig.fw" static int cx18_av_verifyfw(struct cx18 *cx, const struct firmware *fw) @@ -74,7 +80,7 @@ int cx18_av_loadfw(struct cx18 *cx) struct v4l2_subdev *sd = &cx->av_state.sd; const struct firmware *fw = NULL; u32 size; - u32 v; + u32 u, v; const u8 *ptr; int i; int retries1 = 0; @@ -183,6 +189,28 @@ int cx18_av_loadfw(struct cx18 *cx) cx18_write_reg_expect(cx, v & 0xFFFFFBFF, CX18_AUDIO_ENABLE, 0, 0x400); + /* Toggle the AI1 MUX */ + v = cx18_read_reg(cx, CX18_AUDIO_ENABLE); + u = v & CX18_AI1_MUX_MASK; + v &= ~CX18_AI1_MUX_MASK; + if (u == CX18_AI1_MUX_843_I2S || u == CX18_AI1_MUX_INVALID) { + /* Switch to I2S1 */ + v |= CX18_AI1_MUX_I2S1; + cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE, + v, CX18_AI1_MUX_MASK); + /* Switch back to the A/V decoder core I2S output */ + v = (v & ~CX18_AI1_MUX_MASK) | CX18_AI1_MUX_843_I2S; + } else { + /* Switch to the A/V decoder core I2S output */ + v |= CX18_AI1_MUX_843_I2S; + cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE, + v, CX18_AI1_MUX_MASK); + /* Switch back to I2S1 or I2S2 */ + v = (v & ~CX18_AI1_MUX_MASK) | u; + } + cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE, + v, CX18_AI1_MUX_MASK); + /* Enable WW auto audio standard detection */ v = cx18_av_read4(cx, CXADEC_STD_DET_CTL); v |= 0xFF; /* Auto by default */ |