unsigned int mode; /* The mode (I2S or left-justified) */
};
-/* The number of MCLK/LRCK ratios supported by the CS4270 */
-#define NUM_MCLK_RATIOS 9
+/*
+ * The codec isn't really big-endian or little-endian, since the I2S
+ * interface requires data to be sent serially with the MSbit first.
+ * However, to support BE and LE I2S devices, we specify both here. That
+ * way, ALSA will always match the bit patterns.
+ */
+#define CS4270_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
+ SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
+ SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
+ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
+ SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
+
+#ifdef USE_I2C
+
+/* CS4270 registers addresses */
+#define CS4270_CHIPID 0x01 /* Chip ID */
+#define CS4270_PWRCTL 0x02 /* Power Control */
+#define CS4270_MODE 0x03 /* Mode Control */
+#define CS4270_FORMAT 0x04 /* Serial Format, ADC/DAC Control */
+#define CS4270_TRANS 0x05 /* Transition Control */
+#define CS4270_MUTE 0x06 /* Mute Control */
+#define CS4270_VOLA 0x07 /* DAC Channel A Volume Control */
+#define CS4270_VOLB 0x08 /* DAC Channel B Volume Control */
+
+#define CS4270_FIRSTREG 0x01
+#define CS4270_LASTREG 0x08
+#define CS4270_NUMREGS (CS4270_LASTREG - CS4270_FIRSTREG + 1)
-/* The actual MCLK/LRCK ratios, in increasing numerical order */
-static unsigned int mclk_ratios[NUM_MCLK_RATIOS] =
- {64, 96, 128, 192, 256, 384, 512, 768, 1024};
+/* Bit masks for the CS4270 registers */
+#define CS4270_CHIPID_ID 0xF0
+#define CS4270_CHIPID_REV 0x0F
+#define CS4270_PWRCTL_FREEZE 0x80
+#define CS4270_PWRCTL_PDN_ADC 0x20
+#define CS4270_PWRCTL_PDN_DAC 0x02
+#define CS4270_PWRCTL_PDN 0x01
+#define CS4270_MODE_SPEED_MASK 0x30
+#define CS4270_MODE_1X 0x00
+#define CS4270_MODE_2X 0x10
+#define CS4270_MODE_4X 0x20
+#define CS4270_MODE_SLAVE 0x30
+#define CS4270_MODE_DIV_MASK 0x0E
+#define CS4270_MODE_DIV1 0x00
+#define CS4270_MODE_DIV15 0x02
+#define CS4270_MODE_DIV2 0x04
+#define CS4270_MODE_DIV3 0x06
+#define CS4270_MODE_DIV4 0x08
+#define CS4270_MODE_POPGUARD 0x01
+#define CS4270_FORMAT_FREEZE_A 0x80
+#define CS4270_FORMAT_FREEZE_B 0x40
+#define CS4270_FORMAT_LOOPBACK 0x20
+#define CS4270_FORMAT_DAC_MASK 0x18
+#define CS4270_FORMAT_DAC_LJ 0x00
+#define CS4270_FORMAT_DAC_I2S 0x08
+#define CS4270_FORMAT_DAC_RJ16 0x18
+#define CS4270_FORMAT_DAC_RJ24 0x10
+#define CS4270_FORMAT_ADC_MASK 0x01
+#define CS4270_FORMAT_ADC_LJ 0x00
+#define CS4270_FORMAT_ADC_I2S 0x01
+#define CS4270_TRANS_ONE_VOL 0x80
+#define CS4270_TRANS_SOFT 0x40
+#define CS4270_TRANS_ZERO 0x20
+#define CS4270_TRANS_INV_ADC_A 0x08
+#define CS4270_TRANS_INV_ADC_B 0x10
+#define CS4270_TRANS_INV_DAC_A 0x02
+#define CS4270_TRANS_INV_DAC_B 0x04
+#define CS4270_TRANS_DEEMPH 0x01
+#define CS4270_MUTE_AUTO 0x20
+#define CS4270_MUTE_ADC_A 0x08
+#define CS4270_MUTE_ADC_B 0x10
+#define CS4270_MUTE_POLARITY 0x04
+#define CS4270_MUTE_DAC_A 0x01
+#define CS4270_MUTE_DAC_B 0x02
+
+/*
+ * Clock Ratio Selection for Master Mode with I2C enabled
+ *
+ * The data for this chart is taken from Table 5 of the CS4270 reference
+ * manual.
+ *
+ * This table is used to determine how to program the Mode Control register.
+ * It is also used by cs4270_set_dai_sysclk() to tell ALSA which sampling
+ * rates the CS4270 currently supports.
+ *
+ * Each element in this array corresponds to the ratios in mclk_ratios[].
+ * These two arrays need to be in sync.
+ *
+ * 'speed_mode' is the corresponding bit pattern to be written to the
+ * MODE bits of the Mode Control Register
+ *
+ * 'mclk' is the corresponding bit pattern to be wirten to the MCLK bits of
+ * the Mode Control Register.
+ *
+ * In situations where a single ratio is represented by multiple speed
+ * modes, we favor the slowest speed. E.g, for a ratio of 128, we pick
+ * double-speed instead of quad-speed. However, the CS4270 errata states
+ * that Divide-By-1.5 can cause failures, so we avoid that mode where
+ * possible.
+ *
+ * ERRATA: There is an errata for the CS4270 where divide-by-1.5 does not
+ * work if VD = 3.3V. If this effects you, select the
+ * CONFIG_SND_SOC_CS4270_VD33_ERRATA Kconfig option, and the driver will
+ * never select any sample rates that require divide-by-1.5.
+ */
+static struct {
+ unsigned int ratio;
+ u8 speed_mode;
+ u8 mclk;
+} cs4270_mode_ratios[] = {
+ {64, CS4270_MODE_4X, CS4270_MODE_DIV1},
+#ifndef CONFIG_SND_SOC_CS4270_VD33_ERRATA
+ {96, CS4270_MODE_4X, CS4270_MODE_DIV15},
+#endif
+ {128, CS4270_MODE_2X, CS4270_MODE_DIV1},
+ {192, CS4270_MODE_4X, CS4270_MODE_DIV3},
+ {256, CS4270_MODE_1X, CS4270_MODE_DIV1},
+ {384, CS4270_MODE_2X, CS4270_MODE_DIV3},
+ {512, CS4270_MODE_1X, CS4270_MODE_DIV2},
+ {768, CS4270_MODE_1X, CS4270_MODE_DIV3},
+ {1024, CS4270_MODE_1X, CS4270_MODE_DIV4}
+};
+
+/* The number of MCLK/LRCK ratios supported by the CS4270 */
+#define NUM_MCLK_RATIOS ARRAY_SIZE(cs4270_mode_ratios)
/*
* Determine the CS4270 samples rates.
cs4270->mclk = freq;
for (i = 0; i < NUM_MCLK_RATIOS; i++) {
- unsigned int rate = freq / mclk_ratios[i];
+ unsigned int rate = freq / cs4270_mode_ratios[i].ratio;
rates |= snd_pcm_rate_to_rate_bit(rate);
if (rate < rate_min)
rate_min = rate;
return ret;
}
-/*
- * The codec isn't really big-endian or little-endian, since the I2S
- * interface requires data to be sent serially with the MSbit first.
- * However, to support BE and LE I2S devices, we specify both here. That
- * way, ALSA will always match the bit patterns.
- */
-#define CS4270_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
- SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
- SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
- SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
- SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \
- SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
-
-#ifdef USE_I2C
-
-/* CS4270 registers addresses */
-#define CS4270_CHIPID 0x01 /* Chip ID */
-#define CS4270_PWRCTL 0x02 /* Power Control */
-#define CS4270_MODE 0x03 /* Mode Control */
-#define CS4270_FORMAT 0x04 /* Serial Format, ADC/DAC Control */
-#define CS4270_TRANS 0x05 /* Transition Control */
-#define CS4270_MUTE 0x06 /* Mute Control */
-#define CS4270_VOLA 0x07 /* DAC Channel A Volume Control */
-#define CS4270_VOLB 0x08 /* DAC Channel B Volume Control */
-
-#define CS4270_FIRSTREG 0x01
-#define CS4270_LASTREG 0x08
-#define CS4270_NUMREGS (CS4270_LASTREG - CS4270_FIRSTREG + 1)
-
-/* Bit masks for the CS4270 registers */
-#define CS4270_CHIPID_ID 0xF0
-#define CS4270_CHIPID_REV 0x0F
-#define CS4270_PWRCTL_FREEZE 0x80
-#define CS4270_PWRCTL_PDN_ADC 0x20
-#define CS4270_PWRCTL_PDN_DAC 0x02
-#define CS4270_PWRCTL_PDN 0x01
-#define CS4270_MODE_SPEED_MASK 0x30
-#define CS4270_MODE_1X 0x00
-#define CS4270_MODE_2X 0x10
-#define CS4270_MODE_4X 0x20
-#define CS4270_MODE_SLAVE 0x30
-#define CS4270_MODE_DIV_MASK 0x0E
-#define CS4270_MODE_DIV1 0x00
-#define CS4270_MODE_DIV15 0x02
-#define CS4270_MODE_DIV2 0x04
-#define CS4270_MODE_DIV3 0x06
-#define CS4270_MODE_DIV4 0x08
-#define CS4270_MODE_POPGUARD 0x01
-#define CS4270_FORMAT_FREEZE_A 0x80
-#define CS4270_FORMAT_FREEZE_B 0x40
-#define CS4270_FORMAT_LOOPBACK 0x20
-#define CS4270_FORMAT_DAC_MASK 0x18
-#define CS4270_FORMAT_DAC_LJ 0x00
-#define CS4270_FORMAT_DAC_I2S 0x08
-#define CS4270_FORMAT_DAC_RJ16 0x18
-#define CS4270_FORMAT_DAC_RJ24 0x10
-#define CS4270_FORMAT_ADC_MASK 0x01
-#define CS4270_FORMAT_ADC_LJ 0x00
-#define CS4270_FORMAT_ADC_I2S 0x01
-#define CS4270_TRANS_ONE_VOL 0x80
-#define CS4270_TRANS_SOFT 0x40
-#define CS4270_TRANS_ZERO 0x20
-#define CS4270_TRANS_INV_ADC_A 0x08
-#define CS4270_TRANS_INV_ADC_B 0x10
-#define CS4270_TRANS_INV_DAC_A 0x02
-#define CS4270_TRANS_INV_DAC_B 0x04
-#define CS4270_TRANS_DEEMPH 0x01
-#define CS4270_MUTE_AUTO 0x20
-#define CS4270_MUTE_ADC_A 0x08
-#define CS4270_MUTE_ADC_B 0x10
-#define CS4270_MUTE_POLARITY 0x04
-#define CS4270_MUTE_DAC_A 0x01
-#define CS4270_MUTE_DAC_B 0x02
-
/*
* A list of addresses on which this CS4270 could use. I2C addresses are
* 7 bits. For the CS4270, the upper four bits are always 1001, and the
return 0;
}
-/*
- * Clock Ratio Selection for Master Mode with I2C enabled
- *
- * The data for this chart is taken from Table 5 of the CS4270 reference
- * manual.
- *
- * This table is used to determine how to program the Mode Control register.
- * It is also used by cs4270_set_dai_sysclk() to tell ALSA which sampling
- * rates the CS4270 currently supports.
- *
- * Each element in this array corresponds to the ratios in mclk_ratios[].
- * These two arrays need to be in sync.
- *
- * 'speed_mode' is the corresponding bit pattern to be written to the
- * MODE bits of the Mode Control Register
- *
- * 'mclk' is the corresponding bit pattern to be wirten to the MCLK bits of
- * the Mode Control Register.
- *
- * In situations where a single ratio is represented by multiple speed
- * modes, we favor the slowest speed. E.g, for a ratio of 128, we pick
- * double-speed instead of quad-speed. However, the CS4270 errata states
- * that Divide-By-1.5 can cause failures, so we avoid that mode where
- * possible.
- *
- * ERRATA: There is an errata for the CS4270 where divide-by-1.5 does not
- * work if VD = 3.3V. If this effects you, select the
- * CONFIG_SND_SOC_CS4270_VD33_ERRATA Kconfig option, and the driver will
- * never select any sample rates that require divide-by-1.5.
- */
-static struct {
- u8 speed_mode;
- u8 mclk;
-} cs4270_mode_ratios[NUM_MCLK_RATIOS] = {
- {CS4270_MODE_4X, CS4270_MODE_DIV1}, /* 64 */
-#ifndef CONFIG_SND_SOC_CS4270_VD33_ERRATA
- {CS4270_MODE_4X, CS4270_MODE_DIV15}, /* 96 */
-#endif
- {CS4270_MODE_2X, CS4270_MODE_DIV1}, /* 128 */
- {CS4270_MODE_4X, CS4270_MODE_DIV3}, /* 192 */
- {CS4270_MODE_1X, CS4270_MODE_DIV1}, /* 256 */
- {CS4270_MODE_2X, CS4270_MODE_DIV3}, /* 384 */
- {CS4270_MODE_1X, CS4270_MODE_DIV2}, /* 512 */
- {CS4270_MODE_1X, CS4270_MODE_DIV3}, /* 768 */
- {CS4270_MODE_1X, CS4270_MODE_DIV4} /* 1024 */
-};
-
/*
* Program the CS4270 with the given hardware parameters.
*
ratio = cs4270->mclk / rate; /* MCLK/LRCK ratio */
for (i = 0; i < NUM_MCLK_RATIOS; i++) {
- if (mclk_ratios[i] == ratio)
+ if (cs4270_mode_ratios[i].ratio == ratio)
break;
}
return ret;
}
-#endif
+#endif /* USE_I2C*/
struct snd_soc_codec_dai cs4270_dai = {
.name = "CS4270",
.rates = 0,
.formats = CS4270_FORMATS,
},
- .dai_ops = {
- .set_sysclk = cs4270_set_dai_sysclk,
- .set_fmt = cs4270_set_dai_fmt,
- }
};
EXPORT_SYMBOL_GPL(cs4270_dai);
if (codec->control_data) {
/* Initialize codec ops */
cs4270_dai.ops.hw_params = cs4270_hw_params;
+ cs4270_dai.dai_ops.set_sysclk = cs4270_set_dai_sysclk;
+ cs4270_dai.dai_ops.set_fmt = cs4270_set_dai_fmt;
#ifdef CONFIG_SND_SOC_CS4270_HWMUTE
cs4270_dai.dai_ops.digital_mute = cs4270_mute;
#endif
git.openpandora.org / pandora-kernel.git / commitdiff