ALSA: wss-lib: move AD1845 frequency setting into wss-lib

This is required to allow the sscape driver
to autodetect installed codec.

Also, do not create a timer if detected codec
has no hardware timer (e.g. AD1848).

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Rene Herman
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 40 insertions, 0 deletions

diff --git a/sound/isa/wss/wss_lib.c b/sound/isa/wss/wss_lib.c
index 3d6c5f2838af..13299aebd077 100644
--- a/sound/isa/wss/wss_lib.c
+++ b/sound/isa/wss/wss_lib.c
@@ -646,6 +646,24 @@ static void snd_wss_playback_format(struct snd_wss *chip,
                         full_calib = 0;
                 }
                 spin_unlock_irqrestore(&chip->reg_lock, flags);
+        } else if (chip->hardware == WSS_HW_AD1845) {
+                unsigned rate = params_rate(params);
+
+                /*
+                 * Program the AD1845 correctly for the playback stream.
+                 * Note that we do NOT need to toggle the MCE bit because
+                 * the PLAYBACK_ENABLE bit of the Interface Configuration
+                 * register is set.
+                 *
+                 * NOTE: We seem to need to write to the MSB before the LSB
+                 *       to get the correct sample frequency.
+                 */
+                spin_lock_irqsave(&chip->reg_lock, flags);
+                snd_wss_out(chip, CS4231_PLAYBK_FORMAT, (pdfr & 0xf0));
+                snd_wss_out(chip, AD1845_UPR_FREQ_SEL, (rate >> 8) & 0xff);
+                snd_wss_out(chip, AD1845_LWR_FREQ_SEL, rate & 0xff);
+                full_calib = 0;
+                spin_unlock_irqrestore(&chip->reg_lock, flags);
         }
         if (full_calib) {
                 snd_wss_mce_up(chip);
@@ -690,6 +708,24 @@ static void snd_wss_capture_format(struct snd_wss *chip,
                         full_calib = 0;
                 }
                 spin_unlock_irqrestore(&chip->reg_lock, flags);
+        } else if (chip->hardware == WSS_HW_AD1845) {
+                unsigned rate = params_rate(params);
+
+                /*
+                 * Program the AD1845 correctly for the capture stream.
+                 * Note that we do NOT need to toggle the MCE bit because
+                 * the PLAYBACK_ENABLE bit of the Interface Configuration
+                 * register is set.
+                 *
+                 * NOTE: We seem to need to write to the MSB before the LSB
+                 *       to get the correct sample frequency.
+                 */
+                spin_lock_irqsave(&chip->reg_lock, flags);
+                snd_wss_out(chip, CS4231_REC_FORMAT, (cdfr & 0xf0));
+                snd_wss_out(chip, AD1845_UPR_FREQ_SEL, (rate >> 8) & 0xff);
+                snd_wss_out(chip, AD1845_LWR_FREQ_SEL, rate & 0xff);
+                full_calib = 0;
+                spin_unlock_irqrestore(&chip->reg_lock, flags);
         }
         if (full_calib) {
                 snd_wss_mce_up(chip);
@@ -1314,6 +1350,10 @@ static int snd_wss_probe(struct snd_wss *chip)
                 chip->image[CS4231_ALT_FEATURE_2] =
                         chip->hardware == WSS_HW_INTERWAVE ? 0xc2 : 0x01;
         }
+        /* enable fine grained frequency selection */
+        if (chip->hardware == WSS_HW_AD1845)
+                chip->image[AD1845_PWR_DOWN] = 8;
+
         ptr = (unsigned char *) &chip->image;
         regnum = (chip->hardware & WSS_HW_AD1848_MASK) ? 16 : 32;
         snd_wss_mce_down(chip);