diff options
| -rw-r--r-- | drivers/media/video/cx18/cx18-audio.c | 44 | ||||
| -rw-r--r-- | drivers/media/video/cx18/cx18-av-firmware.c | 32 |
2 files changed, 68 insertions, 8 deletions
diff --git a/drivers/media/video/cx18/cx18-audio.c b/drivers/media/video/cx18/cx18-audio.c index 7a8ad5963de..35268923911 100644 --- a/drivers/media/video/cx18/cx18-audio.c +++ b/drivers/media/video/cx18/cx18-audio.c @@ -26,14 +26,18 @@ #include "cx18-cards.h" #include "cx18-audio.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 /* Selects the audio input and output according to the current settings. */ int cx18_audio_set_io(struct cx18 *cx) { const struct cx18_card_audio_input *in; - u32 val; + u32 u, v; int err; /* Determine which input to use */ @@ -52,9 +56,37 @@ int cx18_audio_set_io(struct cx18 *cx) return err; /* FIXME - this internal mux should be abstracted to a subdev */ - val = cx18_read_reg(cx, CX18_AUDIO_ENABLE) & ~0x30; - val |= (in->audio_input > CX18_AV_AUDIO_SERIAL2) ? 0x20 : - (in->audio_input << 4); - cx18_write_reg_expect(cx, val | 0xb00, CX18_AUDIO_ENABLE, val, 0x30); + u = cx18_read_reg(cx, CX18_AUDIO_ENABLE); + v = u & ~CX18_AI1_MUX_MASK; + switch (in->audio_input) { + case CX18_AV_AUDIO_SERIAL1: + v |= CX18_AI1_MUX_I2S1; + break; + case CX18_AV_AUDIO_SERIAL2: + v |= CX18_AI1_MUX_I2S2; + break; + default: + v |= CX18_AI1_MUX_843_I2S; + break; + } + if (v == u) { + /* force a toggle of some AI1 MUX control bits */ + u &= ~CX18_AI1_MUX_MASK; + switch (in->audio_input) { + case CX18_AV_AUDIO_SERIAL1: + u |= CX18_AI1_MUX_843_I2S; + break; + case CX18_AV_AUDIO_SERIAL2: + u |= CX18_AI1_MUX_843_I2S; + break; + default: + u |= CX18_AI1_MUX_I2S1; + break; + } + cx18_write_reg_expect(cx, u | 0xb00, CX18_AUDIO_ENABLE, + u, CX18_AI1_MUX_MASK); + } + cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE, + v, CX18_AI1_MUX_MASK); return 0; } diff --git a/drivers/media/video/cx18/cx18-av-firmware.c b/drivers/media/video/cx18/cx18-av-firmware.c index ab99030dc18..b9e8cc5d264 100644 --- a/drivers/media/video/cx18/cx18-av-firmware.c +++ b/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 */ |