V4L/DVB (8162): cx18: fix PAL/SECAM support

Reverted the 'Fix unintended auto configurations in cx18-av-core' patch,
instead disable the auto config completely.

Fix a bug in cx18_av_vbi_setup() where the standard tests were done
in the wrong order.

Tested with NTSC-M, PAL-BG, PAL-I, PAL-DK, PAL-M, PAL-Nc, SECAM-DK,
SECAM-L and SECAM-BG. The last one does not work at the moment due to
a tda9887.c bug.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

3 files changed, 17 insertions, 92 deletions

diff --git a/drivers/media/video/cx18/cx18-av-core.c b/drivers/media/video/cx18/cx18-av-core.c
index faca43eb940f..cf98b2c445f4 100644
--- a/drivers/media/video/cx18/cx18-av-core.c
+++ b/drivers/media/video/cx18/cx18-av-core.c
@@ -69,58 +69,6 @@ int cx18_av_and_or4(struct cx18 *cx, u16 addr, u32 and_mask,
                              or_value);
 }
 
-int cx18_av_write_no_acfg(struct cx18 *cx, u16 addr, u8 value, int no_acfg_mask)
-{
-        int retval;
-        u32 saved_reg[8] = {0};
-
-        if (no_acfg_mask & CXADEC_NO_ACFG_AFE) {
-                saved_reg[0] = cx18_av_read4(cx, CXADEC_CHIP_CTRL);
-                saved_reg[1] = cx18_av_read4(cx, CXADEC_AFE_CTRL);
-        }
-
-        if (no_acfg_mask & CXADEC_NO_ACFG_PLL) {
-                saved_reg[2] = cx18_av_read4(cx, CXADEC_PLL_CTRL1);
-                saved_reg[3] = cx18_av_read4(cx, CXADEC_VID_PLL_FRAC);
-        }
-
-        if (no_acfg_mask & CXADEC_NO_ACFG_VID) {
-                saved_reg[4] = cx18_av_read4(cx, CXADEC_HORIZ_TIM_CTRL);
-                saved_reg[5] = cx18_av_read4(cx, CXADEC_VERT_TIM_CTRL);
-                saved_reg[6] = cx18_av_read4(cx, CXADEC_SRC_COMB_CFG);
-                saved_reg[7] = cx18_av_read4(cx, CXADEC_CHROMA_VBIOFF_CFG);
-        }
-
-        retval = cx18_av_write(cx, addr, value);
-
-        if (no_acfg_mask & CXADEC_NO_ACFG_AFE) {
-                cx18_av_write4(cx, CXADEC_CHIP_CTRL, saved_reg[0]);
-                cx18_av_write4(cx, CXADEC_AFE_CTRL,  saved_reg[1]);
-        }
-
-        if (no_acfg_mask & CXADEC_NO_ACFG_PLL) {
-                cx18_av_write4(cx, CXADEC_PLL_CTRL1,    saved_reg[2]);
-                cx18_av_write4(cx, CXADEC_VID_PLL_FRAC, saved_reg[3]);
-        }
-
-        if (no_acfg_mask & CXADEC_NO_ACFG_VID) {
-                cx18_av_write4(cx, CXADEC_HORIZ_TIM_CTRL,    saved_reg[4]);
-                cx18_av_write4(cx, CXADEC_VERT_TIM_CTRL,     saved_reg[5]);
-                cx18_av_write4(cx, CXADEC_SRC_COMB_CFG,      saved_reg[6]);
-                cx18_av_write4(cx, CXADEC_CHROMA_VBIOFF_CFG, saved_reg[7]);
-        }
-
-        return retval;
-}
-
-int cx18_av_and_or_no_acfg(struct cx18 *cx, u16 addr, unsigned and_mask,
-                           u8 or_value, int no_acfg_mask)
-{
-        return cx18_av_write_no_acfg(cx, addr,
-                                     (cx18_av_read(cx, addr) & and_mask) |
-                                     or_value, no_acfg_mask);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static int set_input(struct cx18 *cx, enum cx18_av_video_input vid_input,
@@ -221,16 +169,9 @@ static void input_change(struct cx18 *cx)
         v4l2_std_id std = state->std;
 
         /* Follow step 8c and 8d of section 3.16 in the cx18_av datasheet */
-        if (std & V4L2_STD_SECAM)
-                cx18_av_write_no_acfg(cx, 0x402, 0, CXADEC_NO_ACFG_ALL);
-        else {
-                cx18_av_write_no_acfg(cx, 0x402, 0x04, CXADEC_NO_ACFG_ALL);
-                cx18_av_write(cx, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
-        }
-        cx18_av_and_or_no_acfg(cx, 0x401, ~0x60, 0,
-                                CXADEC_NO_ACFG_PLL | CXADEC_NO_ACFG_VID);
-        cx18_av_and_or_no_acfg(cx, 0x401, ~0x60, 0x60,
-                                CXADEC_NO_ACFG_PLL | CXADEC_NO_ACFG_VID);
+        cx18_av_write(cx, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
+        cx18_av_and_or(cx, 0x401, ~0x60, 0);
+        cx18_av_and_or(cx, 0x401, ~0x60, 0x60);
 
         if (std & V4L2_STD_525_60) {
                 if (std == V4L2_STD_NTSC_M_JP) {
@@ -316,8 +257,7 @@ static int set_input(struct cx18 *cx, enum cx18_av_video_input vid_input,
 
         cx18_av_write(cx, 0x103, reg);
         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
-        cx18_av_and_or_no_acfg(cx, 0x401, ~0x6, is_composite ? 0 : 0x02,
-                                CXADEC_NO_ACFG_PLL | CXADEC_NO_ACFG_VID);
+        cx18_av_and_or(cx, 0x401, ~0x6, is_composite ? 0 : 0x02);
         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
         cx18_av_and_or(cx, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
@@ -373,12 +313,12 @@ static int set_v4lstd(struct cx18 *cx)
            This happens for example with the Yuan MPC622. */
         if (fmt >= 4 && fmt < 8) {
                 /* Set format to NTSC-M */
-                cx18_av_and_or_no_acfg(cx, 0x400, ~0xf, 1, CXADEC_NO_ACFG_AFE);
+                cx18_av_and_or(cx, 0x400, ~0xf, 1);
                 /* Turn off LCOMB */
                 cx18_av_and_or(cx, 0x47b, ~6, 0);
         }
-        cx18_av_and_or_no_acfg(cx, 0x400, ~0xf, fmt, CXADEC_NO_ACFG_AFE);
-        cx18_av_and_or_no_acfg(cx, 0x403, ~0x3, pal_m, CXADEC_NO_ACFG_ALL);
+        cx18_av_and_or(cx, 0x400, ~0x2f, fmt | 0x20);
+        cx18_av_and_or(cx, 0x403, ~0x3, pal_m);
         cx18_av_vbi_setup(cx);
         input_change(cx);
         return 0;
diff --git a/drivers/media/video/cx18/cx18-av-core.h b/drivers/media/video/cx18/cx18-av-core.h
index c172823ce1d8..39f3c9397158 100644
--- a/drivers/media/video/cx18/cx18-av-core.h
+++ b/drivers/media/video/cx18/cx18-av-core.h
@@ -295,24 +295,14 @@ struct cx18_av_state {
 #define CXADEC_SELECT_AUDIO_STANDARD_FM    0xF9  /* FM radio */
 #define CXADEC_SELECT_AUDIO_STANDARD_AUTO  0xFF  /* Auto detect */
 
-/* Flags on what to preserve on write to 0x400-0x403 with cx18_av_.*_no_acfg()*/
-#define CXADEC_NO_ACFG_AFE      0x01 /* Preserve 0x100-0x107 */
-#define CXADEC_NO_ACFG_PLL      0x02 /* Preserve 0x108-0x10f */
-#define CXADEC_NO_ACFG_VID      0x04 /* Preserve 0x470-0x47f */
-#define CXADEC_NO_ACFG_ALL      0x07
-
 /* ----------------------------------------------------------------------- */
 /* cx18_av-core.c                                                          */
 int cx18_av_write(struct cx18 *cx, u16 addr, u8 value);
 int cx18_av_write4(struct cx18 *cx, u16 addr, u32 value);
-int cx18_av_write_no_acfg(struct cx18 *cx, u16 addr, u8 value,
-                                int no_acfg_mask);
 u8 cx18_av_read(struct cx18 *cx, u16 addr);
 u32 cx18_av_read4(struct cx18 *cx, u16 addr);
 int cx18_av_and_or(struct cx18 *cx, u16 addr, unsigned mask, u8 value);
 int cx18_av_and_or4(struct cx18 *cx, u16 addr, u32 mask, u32 value);
-int cx18_av_and_or_no_acfg(struct cx18 *cx, u16 addr, unsigned mask, u8 value,
-                                int no_acfg_mask);
 int cx18_av_cmd(struct cx18 *cx, unsigned int cmd, void *arg);
 
 /* ----------------------------------------------------------------------- */
diff --git a/drivers/media/video/cx18/cx18-av-vbi.c b/drivers/media/video/cx18/cx18-av-vbi.c
index d09f1daf4ebf..0c92f123686f 100644
--- a/drivers/media/video/cx18/cx18-av-vbi.c
+++ b/drivers/media/video/cx18/cx18-av-vbi.c
@@ -108,18 +108,18 @@ void cx18_av_vbi_setup(struct cx18 *cx)
                 src_decimation = 0x21f;
 
                 luma_lpf = 2;
-                if (std & V4L2_STD_SECAM) {
-                        uv_lpf = 0;
-                        comb = 0;
-                        sc = 0x0a425f;
-                } else if (std == V4L2_STD_PAL_Nc) {
+                if (std & V4L2_STD_PAL) {
                         uv_lpf = 1;
                         comb = 0x20;
-                        sc = 556453;
-                } else {
+                        sc = 0x0a8263;
+                } else if (std == V4L2_STD_PAL_Nc) {
                         uv_lpf = 1;
                         comb = 0x20;
-                        sc = 0x0a8263;
+                        sc = 0x087da5;
+                } else { /* SECAM */
+                        uv_lpf = 0;
+                        comb = 0;
+                        sc = 0x0a425f;
                 }
         } else {
                 hactive = 720;
@@ -127,25 +127,20 @@ void cx18_av_vbi_setup(struct cx18 *cx)
                 vactive = 487;
                 luma_lpf = 1;
                 uv_lpf = 1;
+                vblank = 26;
+                vblank656 = 26;
 
                 src_decimation = 0x21f;
                 if (std == V4L2_STD_PAL_60) {
-                        vblank = 26;
-                        vblank656 = 26;
                         burst = 0x5b;
                         luma_lpf = 2;
                         comb = 0x20;
                         sc = 0x0a8263;
                 } else if (std == V4L2_STD_PAL_M) {
-                        vblank = 20;
-                        vblank656 = 24;
                         burst = 0x61;
                         comb = 0x20;
-
                         sc = 555452;
                 } else {
-                        vblank = 26;
-                        vblank656 = 26;
                         burst = 0x5b;
                         comb = 0x66;
                         sc = 556063;