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-rw-r--r--linux/drivers/media/video/cx88/Makefile2
-rw-r--r--linux/drivers/media/video/cx88/cx88-core.c26
-rw-r--r--linux/drivers/media/video/cx88/cx88-tvaudio.c75
-rw-r--r--linux/drivers/media/video/cx88/cx88.h10
4 files changed, 77 insertions, 36 deletions
diff --git a/linux/drivers/media/video/cx88/Makefile b/linux/drivers/media/video/cx88/Makefile
index b06b1275a..5b7e26761 100644
--- a/linux/drivers/media/video/cx88/Makefile
+++ b/linux/drivers/media/video/cx88/Makefile
@@ -1,5 +1,5 @@
cx88xx-objs := cx88-cards.o cx88-core.o cx88-i2c.o cx88-tvaudio.o \
- cx88-input.o
+ cx88-dsp.o cx88-input.o
cx8800-objs := cx88-video.o cx88-vbi.o
cx8802-objs := cx88-mpeg.o
diff --git a/linux/drivers/media/video/cx88/cx88-core.c b/linux/drivers/media/video/cx88/cx88-core.c
index 71dccf6af..39cbd152a 100644
--- a/linux/drivers/media/video/cx88/cx88-core.c
+++ b/linux/drivers/media/video/cx88/cx88-core.c
@@ -232,7 +232,7 @@ cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf)
* can use the whole SDRAM for the DMA fifos. To simplify things, we
* use a static memory layout. That surely will waste memory in case
* we don't use all DMA channels at the same time (which will be the
- * case most of the time). But that still gives us enougth FIFO space
+ * case most of the time). But that still gives us enough FIFO space
* to be able to deal with insane long pci latencies ...
*
* FIFO space allocations:
@@ -242,6 +242,7 @@ cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf)
* channel 24 (vbi) - 4.0k
* channels 25+26 (audio) - 4.0k
* channel 28 (mpeg) - 4.0k
+ * channel 27 (audio rds)- 3.0k
* TOTAL = 29.0k
*
* Every channel has 160 bytes control data (64 bytes instruction
@@ -338,6 +339,18 @@ struct sram_channel cx88_sram_channels[] = {
.cnt1_reg = MO_DMA28_CNT1,
.cnt2_reg = MO_DMA28_CNT2,
},
+ [SRAM_CH27] = {
+ .name = "audio rds",
+ .cmds_start = 0x1801C0,
+ .ctrl_start = 0x180860,
+ .cdt = 0x180860 + 64,
+ .fifo_start = 0x187400,
+ .fifo_size = 0x000C00,
+ .ptr1_reg = MO_DMA27_PTR1,
+ .ptr2_reg = MO_DMA27_PTR2,
+ .cnt1_reg = MO_DMA27_CNT1,
+ .cnt2_reg = MO_DMA27_CNT2,
+ },
};
int cx88_sram_channel_setup(struct cx88_core *core,
@@ -623,6 +636,7 @@ int cx88_reset(struct cx88_core *core)
cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], 128, 0);
cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], 128, 0);
cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28], 188*4, 0);
+ cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH27], 128, 0);
/* misc init ... */
cx_write(MO_INPUT_FORMAT, ((1 << 13) | // agc enable
@@ -821,6 +835,8 @@ int cx88_start_audio_dma(struct cx88_core *core)
/* constant 128 made buzz in analog Nicam-stereo for bigger fifo_size */
int bpl = cx88_sram_channels[SRAM_CH25].fifo_size/4;
+ int rds_bpl = cx88_sram_channels[SRAM_CH27].fifo_size/AUD_RDS_LINES;
+
/* If downstream RISC is enabled, bail out; ALSA is managing DMA */
if (cx_read(MO_AUD_DMACNTRL) & 0x10)
return 0;
@@ -828,12 +844,14 @@ int cx88_start_audio_dma(struct cx88_core *core)
/* setup fifo + format */
cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], bpl, 0);
cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], bpl, 0);
+ cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH27],
+ rds_bpl, 0);
cx_write(MO_AUDD_LNGTH, bpl); /* fifo bpl size */
- cx_write(MO_AUDR_LNGTH, bpl); /* fifo bpl size */
+ cx_write(MO_AUDR_LNGTH, rds_bpl); /* fifo bpl size */
- /* start dma */
- cx_write(MO_AUD_DMACNTRL, 0x0003); /* Up and Down fifo enable */
+ /* enable Up, Down and Audio RDS fifo */
+ cx_write(MO_AUD_DMACNTRL, 0x0007);
return 0;
}
diff --git a/linux/drivers/media/video/cx88/cx88-tvaudio.c b/linux/drivers/media/video/cx88/cx88-tvaudio.c
index 0039354cf..71a127dce 100644
--- a/linux/drivers/media/video/cx88/cx88-tvaudio.c
+++ b/linux/drivers/media/video/cx88/cx88-tvaudio.c
@@ -167,6 +167,8 @@ static void set_audio_finish(struct cx88_core *core, u32 ctl)
/* unmute */
volume = cx_sread(SHADOW_AUD_VOL_CTL);
cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
+
+ core->last_change = jiffies;
}
/* ----------------------------------------------------------- */
@@ -749,6 +751,7 @@ void cx88_set_tvaudio(struct cx88_core *core)
break;
case WW_BG:
case WW_DK:
+ case WW_M:
case WW_I:
case WW_L:
/* prepare all dsp registers */
@@ -760,6 +763,7 @@ void cx88_set_tvaudio(struct cx88_core *core)
if (0 == cx88_detect_nicam(core)) {
/* fall back to fm / am mono */
set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
+ core->audiomode_current = V4L2_TUNER_MODE_MONO;
core->use_nicam = 0;
} else {
core->use_nicam = 1;
@@ -791,6 +795,7 @@ void cx88_set_tvaudio(struct cx88_core *core)
void cx88_newstation(struct cx88_core *core)
{
core->audiomode_manual = UNSET;
+ core->last_change = jiffies;
}
void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
@@ -809,44 +814,42 @@ void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
aud_ctl_names[cx_read(AUD_CTL) & 63]);
core->astat = reg;
-/* TODO
- Reading from AUD_STATUS is not enough
- for auto-detecting sap/dual-fm/nicam.
- Add some code here later.
-*/
-
-# if 0
t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP |
V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
- t->rxsubchans = V4L2_TUNER_SUB_MONO;
+ t->rxsubchans = UNSET;
t->audmode = V4L2_TUNER_MODE_MONO;
+ switch (mode) {
+ case 0:
+ t->audmode = V4L2_TUNER_MODE_STEREO;
+ break;
+ case 1:
+ t->audmode = V4L2_TUNER_MODE_LANG2;
+ break;
+ case 2:
+ t->audmode = V4L2_TUNER_MODE_MONO;
+ break;
+ case 3:
+ t->audmode = V4L2_TUNER_MODE_SAP;
+ break;
+ }
+
switch (core->tvaudio) {
case WW_BTSC:
- t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP;
- t->rxsubchans = V4L2_TUNER_SUB_STEREO;
- if (1 == pilot) {
- /* SAP */
- t->rxsubchans |= V4L2_TUNER_SUB_SAP;
- }
- break;
- case WW_A2_BG:
- case WW_A2_DK:
- case WW_A2_M:
- if (1 == pilot) {
- /* stereo */
- t->rxsubchans =
- V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
- if (0 == mode)
- t->audmode = V4L2_TUNER_MODE_STEREO;
- }
- if (2 == pilot) {
- /* dual language -- FIXME */
- t->rxsubchans =
- V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
- t->audmode = V4L2_TUNER_MODE_LANG1;
+ case WW_BG:
+ case WW_DK:
+ case WW_M:
+ case WW_EIAJ:
+ if (!core->use_nicam) {
+ t->rxsubchans = cx88_dsp_detect_stereo_sap(core);
+ break;
}
break;
+# if 0
+ /* TODO
+ Reading from AUD_STATUS is not enough
+ for auto-detecting sap/dual-fm/nicam.
+ */
case WW_NICAM_BGDKL:
if (0 == mode) {
t->audmode = V4L2_TUNER_MODE_STEREO;
@@ -859,11 +862,20 @@ void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
}
break;
+# endif
default:
/* nothing */
break;
}
-# endif
+
+ /* If software stereo detection is not supported... */
+ if (UNSET == t->rxsubchans) {
+ t->rxsubchans = V4L2_TUNER_SUB_MONO;
+ /* If the hardware itself detected stereo, also return
+ stereo as an available subchannel */
+ if (V4L2_TUNER_MODE_STEREO == t->audmode)
+ t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
+ }
return;
}
@@ -900,6 +912,7 @@ void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
break;
case WW_BG:
case WW_DK:
+ case WW_M:
case WW_I:
case WW_L:
if (1 == core->use_nicam) {
diff --git a/linux/drivers/media/video/cx88/cx88.h b/linux/drivers/media/video/cx88/cx88.h
index a34f6ee0c..1cf6900e0 100644
--- a/linux/drivers/media/video/cx88/cx88.h
+++ b/linux/drivers/media/video/cx88/cx88.h
@@ -66,6 +66,8 @@
#define VBI_LINE_COUNT 17
#define VBI_LINE_LENGTH 2048
+#define AUD_RDS_LINES 4
+
/* need "shadow" registers for some write-only ones ... */
#define SHADOW_AUD_VOL_CTL 1
#define SHADOW_AUD_BAL_CTL 2
@@ -133,6 +135,7 @@ struct cx88_ctrl {
#define SRAM_CH25 4 /* audio */
#define SRAM_CH26 5
#define SRAM_CH28 6 /* mpeg */
+#define SRAM_CH27 7 /* audio rds */
/* more */
struct sram_channel {
@@ -354,6 +357,7 @@ struct cx88_core {
u32 input;
u32 astat;
u32 use_nicam;
+ unsigned long last_change;
/* IR remote control state */
struct cx88_IR *ir;
@@ -673,6 +677,7 @@ extern void cx88_setup_xc3028(struct cx88_core *core, struct xc2028_ctrl *ctl);
#define WW_I2SPT 8
#define WW_FM 9
#define WW_I2SADC 10
+#define WW_M 11
void cx88_set_tvaudio(struct cx88_core *core);
void cx88_newstation(struct cx88_core *core);
@@ -686,6 +691,11 @@ struct cx8802_dev *cx8802_get_device(int minor);
struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype);
/* ----------------------------------------------------------- */
+/* cx88-dsp.c */
+
+s32 cx88_dsp_detect_stereo_sap(struct cx88_core *core);
+
+/* ----------------------------------------------------------- */
/* cx88-input.c */
int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci);
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-15 03:00:46 +0000