Merge branch 'for-2.6.34' into for-2.6.35

Conflicts due to context changes next to the backported DMA data change:
	include/sound/soc.h

4 files changed, 91 insertions, 66 deletions

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index fc3dce814924..e00201e0820e 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -3015,34 +3015,39 @@ static int wm8994_set_bias_level(struct snd_soc_codec *codec,
                 break;
 
         case SND_SOC_BIAS_OFF:
-                /* Switch over to startup biases */
-                snd_soc_update_bits(codec, WM8994_ANTIPOP_2,
-                                    WM8994_BIAS_SRC | WM8994_STARTUP_BIAS_ENA |
-                                    WM8994_VMID_BUF_ENA |
-                                    WM8994_VMID_RAMP_MASK,
-                                    WM8994_BIAS_SRC | WM8994_STARTUP_BIAS_ENA |
-                                    WM8994_VMID_BUF_ENA |
-                                    (1 << WM8994_VMID_RAMP_SHIFT));
-
-                /* Disable main biases */
-                snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_1,
-                                    WM8994_BIAS_ENA | WM8994_VMID_SEL_MASK, 0);
+                if (codec->bias_level == SND_SOC_BIAS_STANDBY) {
+                        /* Switch over to startup biases */
+                        snd_soc_update_bits(codec, WM8994_ANTIPOP_2,
+                                            WM8994_BIAS_SRC |
+                                            WM8994_STARTUP_BIAS_ENA |
+                                            WM8994_VMID_BUF_ENA |
+                                            WM8994_VMID_RAMP_MASK,
+                                            WM8994_BIAS_SRC |
+                                            WM8994_STARTUP_BIAS_ENA |
+                                            WM8994_VMID_BUF_ENA |
+                                            (1 << WM8994_VMID_RAMP_SHIFT));
 
-                /* Discharge line */
-                snd_soc_update_bits(codec, WM8994_ANTIPOP_1,
-                                    WM8994_LINEOUT1_DISCH |
-                                    WM8994_LINEOUT2_DISCH,
-                                    WM8994_LINEOUT1_DISCH |
-                                    WM8994_LINEOUT2_DISCH);
+                        /* Disable main biases */
+                        snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_1,
+                                            WM8994_BIAS_ENA |
+                                            WM8994_VMID_SEL_MASK, 0);
 
-                msleep(5);
+                        /* Discharge line */
+                        snd_soc_update_bits(codec, WM8994_ANTIPOP_1,
+                                            WM8994_LINEOUT1_DISCH |
+                                            WM8994_LINEOUT2_DISCH,
+                                            WM8994_LINEOUT1_DISCH |
+                                            WM8994_LINEOUT2_DISCH);
 
-                /* Switch off startup biases */
-                snd_soc_update_bits(codec, WM8994_ANTIPOP_2,
-                                    WM8994_BIAS_SRC | WM8994_STARTUP_BIAS_ENA |
-                                    WM8994_VMID_BUF_ENA |
-                                    WM8994_VMID_RAMP_MASK, 0);
+                        msleep(5);
 
+                        /* Switch off startup biases */
+                        snd_soc_update_bits(codec, WM8994_ANTIPOP_2,
+                                            WM8994_BIAS_SRC |
+                                            WM8994_STARTUP_BIAS_ENA |
+                                            WM8994_VMID_BUF_ENA |
+                                            WM8994_VMID_RAMP_MASK, 0);
+                }
                 break;
         }
         codec->bias_level = level;
@@ -3866,11 +3871,12 @@ static int wm8994_codec_probe(struct platform_device *pdev)
         case 3:
                 wm8994->hubs.dcs_codes = -5;
                 wm8994->hubs.hp_startup_mode = 1;
+                wm8994->hubs.dcs_readback_mode = 1;
                 break;
         default:
+                wm8994->hubs.dcs_readback_mode = 1;
                 break;
         }
-                           
 
         ret = wm8994_request_irq(codec->control_data, WM8994_IRQ_MIC1_DET,
                                  wm8994_mic_irq, "Mic 1 detect", wm8994);
diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c
index 486bdd21a98a..e1f225a3ac46 100644
--- a/sound/soc/codecs/wm_hubs.c
+++ b/sound/soc/codecs/wm_hubs.c
@@ -62,21 +62,27 @@ static const char *speaker_mode_text[] = {
 static const struct soc_enum speaker_mode =
         SOC_ENUM_SINGLE(WM8993_SPKMIXR_ATTENUATION, 8, 2, speaker_mode_text);
 
-static void wait_for_dc_servo(struct snd_soc_codec *codec)
+static void wait_for_dc_servo(struct snd_soc_codec *codec, unsigned int op)
 {
         unsigned int reg;
         int count = 0;
+        unsigned int val;
+
+        val = op | WM8993_DCS_ENA_CHAN_0 | WM8993_DCS_ENA_CHAN_1;
+
+        /* Trigger the command */
+        snd_soc_write(codec, WM8993_DC_SERVO_0, val);
 
         dev_dbg(codec->dev, "Waiting for DC servo...\n");
 
         do {
                 count++;
                 msleep(1);
-                reg = snd_soc_read(codec, WM8993_DC_SERVO_READBACK_0);
+                reg = snd_soc_read(codec, WM8993_DC_SERVO_0);
                 dev_dbg(codec->dev, "DC servo: %x\n", reg);
-        } while (reg & WM8993_DCS_DATAPATH_BUSY && count < 400);
+        } while (reg & op && count < 400);
 
-        if (reg & WM8993_DCS_DATAPATH_BUSY)
+        if (reg & op)
                 dev_err(codec->dev, "Timed out waiting for DC Servo\n");
 }
 
@@ -86,51 +92,58 @@ static void wait_for_dc_servo(struct snd_soc_codec *codec)
 static void calibrate_dc_servo(struct snd_soc_codec *codec)
 {
         struct wm_hubs_data *hubs = codec->private_data;
-        u16 reg, dcs_cfg;
+        u16 reg, reg_l, reg_r, dcs_cfg;
 
         /* Set for 32 series updates */
         snd_soc_update_bits(codec, WM8993_DC_SERVO_1,
                             WM8993_DCS_SERIES_NO_01_MASK,
                             32 << WM8993_DCS_SERIES_NO_01_SHIFT);
-
-        /* Enable the DC servo.  Write all bits to avoid triggering startup
-         * or write calibration.
-         */
-        snd_soc_update_bits(codec, WM8993_DC_SERVO_0,
-                            0xFFFF,
-                            WM8993_DCS_ENA_CHAN_0 |
-                            WM8993_DCS_ENA_CHAN_1 |
-                            WM8993_DCS_TRIG_SERIES_1 |
-                            WM8993_DCS_TRIG_SERIES_0);
-
-        wait_for_dc_servo(codec);
+        wait_for_dc_servo(codec,
+                          WM8993_DCS_TRIG_SERIES_0 | WM8993_DCS_TRIG_SERIES_1);
 
         /* Apply correction to DC servo result */
         if (hubs->dcs_codes) {
                 dev_dbg(codec->dev, "Applying %d code DC servo correction\n",
                         hubs->dcs_codes);
 
+                /* Different chips in the family support different
+                 * readback methods.
+                 */
+                switch (hubs->dcs_readback_mode) {
+                case 0:
+                        reg_l = snd_soc_read(codec, WM8993_DC_SERVO_READBACK_1)
+                                & WM8993_DCS_INTEG_CHAN_0_MASK;;
+                        reg_r = snd_soc_read(codec, WM8993_DC_SERVO_READBACK_2)
+                                & WM8993_DCS_INTEG_CHAN_1_MASK;
+                        break;
+                case 1:
+                        reg = snd_soc_read(codec, WM8993_DC_SERVO_3);
+                        reg_l = (reg & WM8993_DCS_DAC_WR_VAL_1_MASK)
+                                >> WM8993_DCS_DAC_WR_VAL_1_SHIFT;
+                        reg_r = reg & WM8993_DCS_DAC_WR_VAL_0_MASK;
+                        break;
+                default:
+                        WARN(1, "Unknown DCS readback method");
+                        break;
+                }
+
                 /* HPOUT1L */
-                reg = snd_soc_read(codec, WM8993_DC_SERVO_READBACK_1) &
-                        WM8993_DCS_INTEG_CHAN_0_MASK;;
-                reg += hubs->dcs_codes;
-                dcs_cfg = reg << WM8993_DCS_DAC_WR_VAL_1_SHIFT;
+                if (reg_l + hubs->dcs_codes > 0 &&
+                    reg_l + hubs->dcs_codes < 0xff)
+                        reg_l += hubs->dcs_codes;
+                dcs_cfg = reg_l << WM8993_DCS_DAC_WR_VAL_1_SHIFT;
 
                 /* HPOUT1R */
-                reg = snd_soc_read(codec, WM8993_DC_SERVO_READBACK_2) &
-                        WM8993_DCS_INTEG_CHAN_1_MASK;
-                reg += hubs->dcs_codes;
-                dcs_cfg |= reg;
+                if (reg_r + hubs->dcs_codes > 0 &&
+                    reg_r + hubs->dcs_codes < 0xff)
+                        reg_r += hubs->dcs_codes;
+                dcs_cfg |= reg_r;
 
                 /* Do it */
                 snd_soc_write(codec, WM8993_DC_SERVO_3, dcs_cfg);
-                snd_soc_update_bits(codec, WM8993_DC_SERVO_0,
-                                    WM8993_DCS_TRIG_DAC_WR_0 |
-                                    WM8993_DCS_TRIG_DAC_WR_1,
-                                    WM8993_DCS_TRIG_DAC_WR_0 |
-                                    WM8993_DCS_TRIG_DAC_WR_1);
-
-                wait_for_dc_servo(codec);
+                wait_for_dc_servo(codec,
+                                  WM8993_DCS_TRIG_DAC_WR_0 |
+                                  WM8993_DCS_TRIG_DAC_WR_1);
         }
 }
 
@@ -141,10 +154,16 @@ static int wm8993_put_dc_servo(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_value *ucontrol)
 {
         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+        struct wm_hubs_data *hubs = codec->private_data;
         int ret;
 
         ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
 
+        /* If we're applying an offset correction then updating the
+         * callibration would be likely to introduce further offsets. */
+        if (hubs->dcs_codes)
+                return ret;
+
         /* Only need to do this if the outputs are active */
         if (snd_soc_read(codec, WM8993_POWER_MANAGEMENT_1)
             & (WM8993_HPOUT1L_ENA | WM8993_HPOUT1R_ENA))
diff --git a/sound/soc/codecs/wm_hubs.h b/sound/soc/codecs/wm_hubs.h
index 420104fe9c90..e51c16683589 100644
--- a/sound/soc/codecs/wm_hubs.h
+++ b/sound/soc/codecs/wm_hubs.h
@@ -21,6 +21,7 @@ extern const unsigned int wm_hubs_spkmix_tlv[];
 /* This *must* be the first element of the codec->private_data struct */
 struct wm_hubs_data {
         int dcs_codes;
+        int dcs_readback_mode;
         int hp_startup_mode;
 };
 
diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c
index 39538c0f81f0..39456447132c 100644
--- a/sound/soc/omap/omap-pcm.c
+++ b/sound/soc/omap/omap-pcm.c
@@ -60,12 +60,11 @@ static void omap_pcm_dma_irq(int ch, u16 stat, void *data)
         struct omap_runtime_data *prtd = runtime->private_data;
         unsigned long flags;
 
-        if ((cpu_is_omap1510()) &&
-                        (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)) {
+        if ((cpu_is_omap1510())) {
                 /*
                  * OMAP1510 doesn't fully support DMA progress counter
                  * and there is no software emulation implemented yet,
-                 * so have to maintain our own playback progress counter
+                 * so have to maintain our own progress counters
                  * that can be used by omap_pcm_pointer() instead.
                  */
                 spin_lock_irqsave(&prtd->lock, flags);
@@ -191,8 +190,7 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream)
         dma_params.frame_count  = runtime->periods;
         omap_set_dma_params(prtd->dma_ch, &dma_params);
 
-        if ((cpu_is_omap1510()) &&
-                        (substream->stream == SNDRV_PCM_STREAM_PLAYBACK))
+        if ((cpu_is_omap1510()))
                 omap_enable_dma_irq(prtd->dma_ch, OMAP_DMA_FRAME_IRQ |
                               OMAP_DMA_LAST_IRQ | OMAP_DMA_BLOCK_IRQ);
         else
@@ -250,14 +248,15 @@ static snd_pcm_uframes_t omap_pcm_pointer(struct snd_pcm_substream *substream)
         dma_addr_t ptr;
         snd_pcm_uframes_t offset;
 
-        if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+        if (cpu_is_omap1510()) {
+                offset = prtd->period_index * runtime->period_size;
+        } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
                 ptr = omap_get_dma_dst_pos(prtd->dma_ch);
                 offset = bytes_to_frames(runtime, ptr - runtime->dma_addr);
-        } else if (!(cpu_is_omap1510())) {
+        } else {
                 ptr = omap_get_dma_src_pos(prtd->dma_ch);
                 offset = bytes_to_frames(runtime, ptr - runtime->dma_addr);
-        } else
-                offset = prtd->period_index * runtime->period_size;
+        }
 
         if (offset >= runtime->buffer_size)
                 offset = 0;