+
+/*
+ * LM 4550 Codec
+ *
+ * We use a static resolution table since LM4550 codec cannot be
+ * properly autoprobed to determine the resolution via
+ * check_volume_resolution().
+ */
+
+static struct snd_ac97_res_table lm4550_restbl[] = {
+ { AC97_MASTER, 0x1f1f },
+ { AC97_HEADPHONE, 0x1f1f },
+ { AC97_MASTER_MONO, 0x001f },
+ { AC97_PC_BEEP, 0x001f }, /* LSB is ignored */
+ { AC97_PHONE, 0x001f },
+ { AC97_MIC, 0x001f },
+ { AC97_LINE, 0x1f1f },
+ { AC97_CD, 0x1f1f },
+ { AC97_VIDEO, 0x1f1f },
+ { AC97_AUX, 0x1f1f },
+ { AC97_PCM, 0x1f1f },
+ { AC97_REC_GAIN, 0x0f0f },
+ { } /* terminator */
+};
+
+int patch_lm4550(struct snd_ac97 *ac97)
+{
+ ac97->res_table = lm4550_restbl;
+ return 0;
+}
+
+/*
+ * UCB1400 codec (http://www.semiconductors.philips.com/acrobat_download/datasheets/UCB1400-02.pdf)
+ */
+static const struct snd_kcontrol_new snd_ac97_controls_ucb1400[] = {
+/* enable/disable headphone driver which allows direct connection to
+ stereo headphone without the use of external DC blocking
+ capacitors */
+AC97_SINGLE("Headphone Driver", 0x6a, 6, 1, 0),
+/* Filter used to compensate the DC offset is added in the ADC to remove idle
+ tones from the audio band. */
+AC97_SINGLE("DC Filter", 0x6a, 4, 1, 0),
+/* Control smart-low-power mode feature. Allows automatic power down
+ of unused blocks in the ADC analog front end and the PLL. */
+AC97_SINGLE("Smart Low Power Mode", 0x6c, 4, 3, 0),
+};
+
+static int patch_ucb1400_specific(struct snd_ac97 * ac97)
+{
+ int idx, err;
+ for (idx = 0; idx < ARRAY_SIZE(snd_ac97_controls_ucb1400); idx++)
+ if ((err = snd_ctl_add(ac97->bus->card, snd_ctl_new1(&snd_ac97_controls_ucb1400[idx], ac97))) < 0)
+ return err;
+ return 0;
+}
+
+static struct snd_ac97_build_ops patch_ucb1400_ops = {
+ .build_specific = patch_ucb1400_specific,
+};
+
+int patch_ucb1400(struct snd_ac97 * ac97)
+{
+ ac97->build_ops = &patch_ucb1400_ops;
+ /* enable headphone driver and smart low power mode by default */
+ snd_ac97_write(ac97, 0x6a, 0x0050);
+ snd_ac97_write(ac97, 0x6c, 0x0030);
+ return 0;
+}