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path: root/drivers/media/video/cx25840/cx25840-audio.c
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Diffstat (limited to 'drivers/media/video/cx25840/cx25840-audio.c')
-rw-r--r--drivers/media/video/cx25840/cx25840-audio.c437
1 files changed, 332 insertions, 105 deletions
diff --git a/drivers/media/video/cx25840/cx25840-audio.c b/drivers/media/video/cx25840/cx25840-audio.c
index fbccbdc..45608d5 100644
--- a/drivers/media/video/cx25840/cx25840-audio.c
+++ b/drivers/media/video/cx25840/cx25840-audio.c
@@ -23,87 +23,137 @@
#include "cx25840-core.h"
-static int set_audclk_freq(struct i2c_client *client, u32 freq)
+/*
+ * Note: The PLL and SRC parameters are based on a reference frequency that
+ * would ideally be:
+ *
+ * NTSC Color subcarrier freq * 8 = 4.5 MHz/286 * 455/2 * 8 = 28.63636363... MHz
+ *
+ * However, it's not the exact reference frequency that matters, only that the
+ * firmware and modules that comprise the driver for a particular board all
+ * use the same value (close to the ideal value).
+ *
+ * Comments below will note which reference frequency is assumed for various
+ * parameters. They will usually be one of
+ *
+ * ref_freq = 28.636360 MHz
+ * or
+ * ref_freq = 28.636363 MHz
+ */
+
+static int cx25840_set_audclk_freq(struct i2c_client *client, u32 freq)
{
struct cx25840_state *state = to_state(i2c_get_clientdata(client));
- if (freq != 32000 && freq != 44100 && freq != 48000)
- return -EINVAL;
-
- /* common for all inputs and rates */
- /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x10 */
- if (!is_cx2388x(state) && !is_cx231xx(state))
- cx25840_write(client, 0x127, 0x50);
-
if (state->aud_input != CX25840_AUDIO_SERIAL) {
switch (freq) {
case 32000:
- if (is_cx2388x(state)) {
- /* We don't have register values
- * so avoid destroying registers. */
- break;
- }
-
- if (!is_cx231xx(state)) {
- /* VID_PLL and AUX_PLL */
- cx25840_write4(client, 0x108, 0x1006040f);
-
- /* AUX_PLL_FRAC */
- cx25840_write4(client, 0x110, 0x01bb39ee);
- }
+ /*
+ * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
+ * AUX_PLL Integer = 0x06, AUX PLL Post Divider = 0x10
+ */
+ cx25840_write4(client, 0x108, 0x1006040f);
+
+ /*
+ * VID_PLL Fraction (register 0x10c) = 0x2be2fe
+ * 28636360 * 0xf.15f17f0/4 = 108 MHz
+ * 432 MHz pre-postdivide
+ */
+
+ /*
+ * AUX_PLL Fraction = 0x1bb39ee
+ * 28636363 * 0x6.dd9cf70/0x10 = 32000 * 384
+ * 196.6 MHz pre-postdivide
+ * FIXME < 200 MHz is out of specified valid range
+ * FIXME 28636363 ref_freq doesn't match VID PLL ref
+ */
+ cx25840_write4(client, 0x110, 0x01bb39ee);
+
+ /*
+ * SA_MCLK_SEL = 1
+ * SA_MCLK_DIV = 0x10 = 384/384 * AUX_PLL post dvivider
+ */
+ cx25840_write(client, 0x127, 0x50);
if (is_cx2583x(state))
break;
- /* src3/4/6_ctl = 0x0801f77f */
+ /* src3/4/6_ctl */
+ /* 0x1.f77f = (4 * 28636360/8 * 2/455) / 32000 */
cx25840_write4(client, 0x900, 0x0801f77f);
cx25840_write4(client, 0x904, 0x0801f77f);
cx25840_write4(client, 0x90c, 0x0801f77f);
break;
case 44100:
- if (is_cx2388x(state)) {
- /* We don't have register values
- * so avoid destroying registers. */
- break;
- }
-
- if (!is_cx231xx(state)) {
- /* VID_PLL and AUX_PLL */
- cx25840_write4(client, 0x108, 0x1009040f);
-
- /* AUX_PLL_FRAC */
- cx25840_write4(client, 0x110, 0x00ec6bd6);
- }
+ /*
+ * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
+ * AUX_PLL Integer = 0x09, AUX PLL Post Divider = 0x10
+ */
+ cx25840_write4(client, 0x108, 0x1009040f);
+
+ /*
+ * VID_PLL Fraction (register 0x10c) = 0x2be2fe
+ * 28636360 * 0xf.15f17f0/4 = 108 MHz
+ * 432 MHz pre-postdivide
+ */
+
+ /*
+ * AUX_PLL Fraction = 0x0ec6bd6
+ * 28636363 * 0x9.7635eb0/0x10 = 44100 * 384
+ * 271 MHz pre-postdivide
+ * FIXME 28636363 ref_freq doesn't match VID PLL ref
+ */
+ cx25840_write4(client, 0x110, 0x00ec6bd6);
+
+ /*
+ * SA_MCLK_SEL = 1
+ * SA_MCLK_DIV = 0x10 = 384/384 * AUX_PLL post dvivider
+ */
+ cx25840_write(client, 0x127, 0x50);
if (is_cx2583x(state))
break;
- /* src3/4/6_ctl = 0x08016d59 */
+ /* src3/4/6_ctl */
+ /* 0x1.6d59 = (4 * 28636360/8 * 2/455) / 44100 */
cx25840_write4(client, 0x900, 0x08016d59);
cx25840_write4(client, 0x904, 0x08016d59);
cx25840_write4(client, 0x90c, 0x08016d59);
break;
case 48000:
- if (is_cx2388x(state)) {
- /* We don't have register values
- * so avoid destroying registers. */
- break;
- }
-
- if (!is_cx231xx(state)) {
- /* VID_PLL and AUX_PLL */
- cx25840_write4(client, 0x108, 0x100a040f);
-
- /* AUX_PLL_FRAC */
- cx25840_write4(client, 0x110, 0x0098d6e5);
- }
+ /*
+ * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
+ * AUX_PLL Integer = 0x0a, AUX PLL Post Divider = 0x10
+ */
+ cx25840_write4(client, 0x108, 0x100a040f);
+
+ /*
+ * VID_PLL Fraction (register 0x10c) = 0x2be2fe
+ * 28636360 * 0xf.15f17f0/4 = 108 MHz
+ * 432 MHz pre-postdivide
+ */
+
+ /*
+ * AUX_PLL Fraction = 0x098d6e5
+ * 28636363 * 0xa.4c6b728/0x10 = 48000 * 384
+ * 295 MHz pre-postdivide
+ * FIXME 28636363 ref_freq doesn't match VID PLL ref
+ */
+ cx25840_write4(client, 0x110, 0x0098d6e5);
+
+ /*
+ * SA_MCLK_SEL = 1
+ * SA_MCLK_DIV = 0x10 = 384/384 * AUX_PLL post dvivider
+ */
+ cx25840_write(client, 0x127, 0x50);
if (is_cx2583x(state))
break;
- /* src3/4/6_ctl = 0x08014faa */
+ /* src3/4/6_ctl */
+ /* 0x1.4faa = (4 * 28636360/8 * 2/455) / 48000 */
cx25840_write4(client, 0x900, 0x08014faa);
cx25840_write4(client, 0x904, 0x08014faa);
cx25840_write4(client, 0x90c, 0x08014faa);
@@ -112,91 +162,173 @@ static int set_audclk_freq(struct i2c_client *client, u32 freq)
} else {
switch (freq) {
case 32000:
- if (is_cx2388x(state)) {
- /* We don't have register values
- * so avoid destroying registers. */
- break;
- }
-
- if (!is_cx231xx(state)) {
- /* VID_PLL and AUX_PLL */
- cx25840_write4(client, 0x108, 0x1e08040f);
-
- /* AUX_PLL_FRAC */
- cx25840_write4(client, 0x110, 0x012a0869);
- }
+ /*
+ * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
+ * AUX_PLL Integer = 0x08, AUX PLL Post Divider = 0x1e
+ */
+ cx25840_write4(client, 0x108, 0x1e08040f);
+
+ /*
+ * VID_PLL Fraction (register 0x10c) = 0x2be2fe
+ * 28636360 * 0xf.15f17f0/4 = 108 MHz
+ * 432 MHz pre-postdivide
+ */
+
+ /*
+ * AUX_PLL Fraction = 0x12a0869
+ * 28636363 * 0x8.9504348/0x1e = 32000 * 256
+ * 246 MHz pre-postdivide
+ * FIXME 28636363 ref_freq doesn't match VID PLL ref
+ */
+ cx25840_write4(client, 0x110, 0x012a0869);
+
+ /*
+ * SA_MCLK_SEL = 1
+ * SA_MCLK_DIV = 0x14 = 256/384 * AUX_PLL post dvivider
+ */
+ cx25840_write(client, 0x127, 0x54);
if (is_cx2583x(state))
break;
- /* src1_ctl = 0x08010000 */
+ /* src1_ctl */
+ /* 0x1.0000 = 32000/32000 */
cx25840_write4(client, 0x8f8, 0x08010000);
- /* src3/4/6_ctl = 0x08020000 */
+ /* src3/4/6_ctl */
+ /* 0x2.0000 = 2 * (32000/32000) */
cx25840_write4(client, 0x900, 0x08020000);
cx25840_write4(client, 0x904, 0x08020000);
cx25840_write4(client, 0x90c, 0x08020000);
-
- /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
- cx25840_write(client, 0x127, 0x54);
break;
case 44100:
- if (is_cx2388x(state)) {
- /* We don't have register values
- * so avoid destroying registers. */
- break;
- }
-
-
- if (!is_cx231xx(state)) {
- /* VID_PLL and AUX_PLL */
- cx25840_write4(client, 0x108, 0x1809040f);
-
- /* AUX_PLL_FRAC */
- cx25840_write4(client, 0x110, 0x00ec6bd6);
- }
+ /*
+ * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
+ * AUX_PLL Integer = 0x09, AUX PLL Post Divider = 0x18
+ */
+ cx25840_write4(client, 0x108, 0x1809040f);
+
+ /*
+ * VID_PLL Fraction (register 0x10c) = 0x2be2fe
+ * 28636360 * 0xf.15f17f0/4 = 108 MHz
+ * 432 MHz pre-postdivide
+ */
+
+ /*
+ * AUX_PLL Fraction = 0x0ec6bd6
+ * 28636363 * 0x9.7635eb0/0x18 = 44100 * 256
+ * 271 MHz pre-postdivide
+ * FIXME 28636363 ref_freq doesn't match VID PLL ref
+ */
+ cx25840_write4(client, 0x110, 0x00ec6bd6);
+
+ /*
+ * SA_MCLK_SEL = 1
+ * SA_MCLK_DIV = 0x10 = 256/384 * AUX_PLL post dvivider
+ */
+ cx25840_write(client, 0x127, 0x50);
if (is_cx2583x(state))
break;
- /* src1_ctl = 0x08010000 */
+ /* src1_ctl */
+ /* 0x1.60cd = 44100/32000 */
cx25840_write4(client, 0x8f8, 0x080160cd);
- /* src3/4/6_ctl = 0x08020000 */
+ /* src3/4/6_ctl */
+ /* 0x1.7385 = 2 * (32000/44100) */
cx25840_write4(client, 0x900, 0x08017385);
cx25840_write4(client, 0x904, 0x08017385);
cx25840_write4(client, 0x90c, 0x08017385);
break;
case 48000:
- if (!is_cx2388x(state) && !is_cx231xx(state)) {
- /* VID_PLL and AUX_PLL */
- cx25840_write4(client, 0x108, 0x180a040f);
-
- /* AUX_PLL_FRAC */
- cx25840_write4(client, 0x110, 0x0098d6e5);
- }
+ /*
+ * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
+ * AUX_PLL Integer = 0x0a, AUX PLL Post Divider = 0x18
+ */
+ cx25840_write4(client, 0x108, 0x180a040f);
+
+ /*
+ * VID_PLL Fraction (register 0x10c) = 0x2be2fe
+ * 28636360 * 0xf.15f17f0/4 = 108 MHz
+ * 432 MHz pre-postdivide
+ */
+
+ /*
+ * AUX_PLL Fraction = 0x098d6e5
+ * 28636363 * 0xa.4c6b728/0x18 = 48000 * 256
+ * 295 MHz pre-postdivide
+ * FIXME 28636363 ref_freq doesn't match VID PLL ref
+ */
+ cx25840_write4(client, 0x110, 0x0098d6e5);
+
+ /*
+ * SA_MCLK_SEL = 1
+ * SA_MCLK_DIV = 0x10 = 256/384 * AUX_PLL post dvivider
+ */
+ cx25840_write(client, 0x127, 0x50);
if (is_cx2583x(state))
break;
- if (!is_cx2388x(state) && !is_cx231xx(state)) {
- /* src1_ctl */
- cx25840_write4(client, 0x8f8, 0x08018000);
+ /* src1_ctl */
+ /* 0x1.8000 = 48000/32000 */
+ cx25840_write4(client, 0x8f8, 0x08018000);
- /* src3/4/6_ctl */
- cx25840_write4(client, 0x900, 0x08015555);
- cx25840_write4(client, 0x904, 0x08015555);
- cx25840_write4(client, 0x90c, 0x08015555);
- } else {
+ /* src3/4/6_ctl */
+ /* 0x1.5555 = 2 * (32000/48000) */
+ cx25840_write4(client, 0x900, 0x08015555);
+ cx25840_write4(client, 0x904, 0x08015555);
+ cx25840_write4(client, 0x90c, 0x08015555);
+ break;
+ }
+ }
+
+ state->audclk_freq = freq;
+
+ return 0;
+}
+
+static inline int cx25836_set_audclk_freq(struct i2c_client *client, u32 freq)
+{
+ return cx25840_set_audclk_freq(client, freq);
+}
+
+static int cx23885_set_audclk_freq(struct i2c_client *client, u32 freq)
+{
+ struct cx25840_state *state = to_state(i2c_get_clientdata(client));
+
+ if (state->aud_input != CX25840_AUDIO_SERIAL) {
+ switch (freq) {
+ case 32000:
+ case 44100:
+ case 48000:
+ /* We don't have register values
+ * so avoid destroying registers. */
+ /* FIXME return -EINVAL; */
+ break;
+ }
+ } else {
+ switch (freq) {
+ case 32000:
+ case 44100:
+ /* We don't have register values
+ * so avoid destroying registers. */
+ /* FIXME return -EINVAL; */
+ break;
- cx25840_write4(client, 0x8f8, 0x0801867c);
+ case 48000:
+ /* src1_ctl */
+ /* 0x1.867c = 48000 / (2 * 28636360/8 * 2/455) */
+ cx25840_write4(client, 0x8f8, 0x0801867c);
- cx25840_write4(client, 0x900, 0x08014faa);
- cx25840_write4(client, 0x904, 0x08014faa);
- cx25840_write4(client, 0x90c, 0x08014faa);
- }
+ /* src3/4/6_ctl */
+ /* 0x1.4faa = (4 * 28636360/8 * 2/455) / 48000 */
+ cx25840_write4(client, 0x900, 0x08014faa);
+ cx25840_write4(client, 0x904, 0x08014faa);
+ cx25840_write4(client, 0x90c, 0x08014faa);
break;
}
}
@@ -206,6 +338,101 @@ static int set_audclk_freq(struct i2c_client *client, u32 freq)
return 0;
}
+static int cx231xx_set_audclk_freq(struct i2c_client *client, u32 freq)
+{
+ struct cx25840_state *state = to_state(i2c_get_clientdata(client));
+
+ if (state->aud_input != CX25840_AUDIO_SERIAL) {
+ switch (freq) {
+ case 32000:
+ /* src3/4/6_ctl */
+ /* 0x1.f77f = (4 * 28636360/8 * 2/455) / 32000 */
+ cx25840_write4(client, 0x900, 0x0801f77f);
+ cx25840_write4(client, 0x904, 0x0801f77f);
+ cx25840_write4(client, 0x90c, 0x0801f77f);
+ break;
+
+ case 44100:
+ /* src3/4/6_ctl */
+ /* 0x1.6d59 = (4 * 28636360/8 * 2/455) / 44100 */
+ cx25840_write4(client, 0x900, 0x08016d59);
+ cx25840_write4(client, 0x904, 0x08016d59);
+ cx25840_write4(client, 0x90c, 0x08016d59);
+ break;
+
+ case 48000:
+ /* src3/4/6_ctl */
+ /* 0x1.4faa = (4 * 28636360/8 * 2/455) / 48000 */
+ cx25840_write4(client, 0x900, 0x08014faa);
+ cx25840_write4(client, 0x904, 0x08014faa);
+ cx25840_write4(client, 0x90c, 0x08014faa);
+ break;
+ }
+ } else {
+ switch (freq) {
+ /* FIXME These cases make different assumptions about audclk */
+ case 32000:
+ /* src1_ctl */
+ /* 0x1.0000 = 32000/32000 */
+ cx25840_write4(client, 0x8f8, 0x08010000);
+
+ /* src3/4/6_ctl */
+ /* 0x2.0000 = 2 * (32000/32000) */
+ cx25840_write4(client, 0x900, 0x08020000);
+ cx25840_write4(client, 0x904, 0x08020000);
+ cx25840_write4(client, 0x90c, 0x08020000);
+ break;
+
+ case 44100:
+ /* src1_ctl */
+ /* 0x1.60cd = 44100/32000 */
+ cx25840_write4(client, 0x8f8, 0x080160cd);
+
+ /* src3/4/6_ctl */
+ /* 0x1.7385 = 2 * (32000/44100) */
+ cx25840_write4(client, 0x900, 0x08017385);
+ cx25840_write4(client, 0x904, 0x08017385);
+ cx25840_write4(client, 0x90c, 0x08017385);
+ break;
+
+ case 48000:
+ /* src1_ctl */
+ /* 0x1.867c = 48000 / (2 * 28636360/8 * 2/455) */
+ cx25840_write4(client, 0x8f8, 0x0801867c);
+
+ /* src3/4/6_ctl */
+ /* 0x1.4faa = (4 * 28636360/8 * 2/455) / 48000 */
+ cx25840_write4(client, 0x900, 0x08014faa);
+ cx25840_write4(client, 0x904, 0x08014faa);
+ cx25840_write4(client, 0x90c, 0x08014faa);
+ break;
+ }
+ }
+
+ state->audclk_freq = freq;
+
+ return 0;
+}
+
+static int set_audclk_freq(struct i2c_client *client, u32 freq)
+{
+ struct cx25840_state *state = to_state(i2c_get_clientdata(client));
+
+ if (freq != 32000 && freq != 44100 && freq != 48000)
+ return -EINVAL;
+
+ if (is_cx231xx(state))
+ return cx231xx_set_audclk_freq(client, freq);
+
+ if (is_cx2388x(state))
+ return cx23885_set_audclk_freq(client, freq);
+
+ if (is_cx2583x(state))
+ return cx25836_set_audclk_freq(client, freq);
+
+ return cx25840_set_audclk_freq(client, freq);
+}
+
void cx25840_audio_set_path(struct i2c_client *client)
{
struct cx25840_state *state = to_state(i2c_get_clientdata(client));
generated by cgit v1.1 at 2024-05-27 17:07:06 +0000