ASoC: pcm512x: Add PCM512x driver

The PCM512x devices are a family of monolithic CMOS integrated circuits
that include a stereo digital-to-analog converter and additional support
circuitry.

This is an initial driver which supports some core functionality for the
device which covers common use cases but does not cover all features.
Currently only slave clocking modes with automatic clock configuration
are supported and most of the DSP configuration for the device is not
enabled.
Signed-off-by: Mark Brown <broonie@linaro.org>

Documentation/devicetree/bindings/sound/pcm512x.txt

+PCM512x audio CODECs
+
+These devices support both I2C and SPI (configured with pin strapping
+on the board).
+
+Required properties:
+
+  - compatible : One of "ti,pcm5121" or "ti,pcm5122"
+
+  - reg : the I2C address of the device for I2C, the chip select
+          number for SPI.
+
+  - AVDD-supply, DVDD-supply, and CPVDD-supply : power supplies for the
+    device, as covered in bindings/regulator/regulator.txt
+
+Optional properties:
+
+  - clocks : A clock specifier for the clock connected as SCLK.  If this
+    is absent the device will be configured to clock from BCLK.
+
+Example:
+
+	pcm5122: pcm5122@4c {
+		compatible = "ti,pcm5122";
+		reg = <0x4c>;
+
+		AVDD-supply = <&reg_3v3_analog>;
+		DVDD-supply = <&reg_1v8>;
+		CPVDD-supply = <&reg_3v3>;
+	};

sound/soc/codecs/Kconfig

@@ -59,6 +59,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_PCM1681 if I2C
 	select SND_SOC_PCM1792A if SPI_MASTER
 	select SND_SOC_PCM3008
+	select SND_SOC_PCM512x if SND_SOC_I2C_AND_SPI
 	select SND_SOC_RT5631 if I2C
 	select SND_SOC_RT5640 if I2C
 	select SND_SOC_SGTL5000 if I2C
@@ -313,6 +314,9 @@ config SND_SOC_PCM1792A
 config SND_SOC_PCM3008
        tristate
 
+config SND_SOC_PCM512x
+       tristate "Texas Instruments PCM512x CODECs"
+
 config SND_SOC_RT5631
 	tristate
 

sound/soc/codecs/Makefile

@@ -46,6 +46,7 @@ snd-soc-hdmi-codec-objs := hdmi.o
 snd-soc-pcm1681-objs := pcm1681.o
 snd-soc-pcm1792a-codec-objs := pcm1792a.o
 snd-soc-pcm3008-objs := pcm3008.o
+snd-soc-pcm512x-objs := pcm512x.o
 snd-soc-rt5631-objs := rt5631.o
 snd-soc-rt5640-objs := rt5640.o
 snd-soc-sgtl5000-objs := sgtl5000.o
@@ -179,6 +180,7 @@ obj-$(CONFIG_SND_SOC_HDMI_CODEC) += snd-soc-hdmi-codec.o
 obj-$(CONFIG_SND_SOC_PCM1681)	+= snd-soc-pcm1681.o
 obj-$(CONFIG_SND_SOC_PCM1792A)	+= snd-soc-pcm1792a-codec.o
 obj-$(CONFIG_SND_SOC_PCM3008)	+= snd-soc-pcm3008.o
+obj-$(CONFIG_SND_SOC_PCM512x)	+= snd-soc-pcm512x.o
 obj-$(CONFIG_SND_SOC_RT5631)	+= snd-soc-rt5631.o
 obj-$(CONFIG_SND_SOC_RT5640)	+= snd-soc-rt5640.o
 obj-$(CONFIG_SND_SOC_SGTL5000)  += snd-soc-sgtl5000.o

sound/soc/codecs/pcm512x.h

+/*
+ * Driver for the PCM512x CODECs
+ *
+ * Author:	Mark Brown <broonie@linaro.org>
+ *		Copyright 2014 Linaro Ltd
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef _SND_SOC_PCM512X
+#define _SND_SOC_PCM512X
+
+#define PCM512x_PAGE_0_BASE 0
+
+#define PCM512x_PAGE              0
+
+#define PCM512x_RESET             (PCM512x_PAGE_0_BASE +   1)
+#define PCM512x_POWER             (PCM512x_PAGE_0_BASE +   2)
+#define PCM512x_MUTE              (PCM512x_PAGE_0_BASE +   3)
+#define PCM512x_PLL_EN            (PCM512x_PAGE_0_BASE +   4)
+#define PCM512x_SPI_MISO_FUNCTION (PCM512x_PAGE_0_BASE +   6)
+#define PCM512x_DSP               (PCM512x_PAGE_0_BASE +   7)
+#define PCM512x_GPIO_EN           (PCM512x_PAGE_0_BASE +   8)
+#define PCM512x_BCLK_LRCLK_CFG    (PCM512x_PAGE_0_BASE +   9)
+#define PCM512x_DSP_GPIO_INPUT    (PCM512x_PAGE_0_BASE +  10)
+#define PCM512x_MASTER_MODE       (PCM512x_PAGE_0_BASE +  12)
+#define PCM512x_PLL_REF           (PCM512x_PAGE_0_BASE +  13)
+#define PCM512x_PLL_COEFF_0       (PCM512x_PAGE_0_BASE +  20)
+#define PCM512x_PLL_COEFF_1       (PCM512x_PAGE_0_BASE +  21)
+#define PCM512x_PLL_COEFF_2       (PCM512x_PAGE_0_BASE +  22)
+#define PCM512x_PLL_COEFF_3       (PCM512x_PAGE_0_BASE +  23)
+#define PCM512x_PLL_COEFF_4       (PCM512x_PAGE_0_BASE +  24)
+#define PCM512x_DSP_CLKDIV        (PCM512x_PAGE_0_BASE +  27)
+#define PCM512x_DAC_CLKDIV        (PCM512x_PAGE_0_BASE +  28)
+#define PCM512x_NCP_CLKDIV        (PCM512x_PAGE_0_BASE +  29)
+#define PCM512x_OSR_CLKDIV        (PCM512x_PAGE_0_BASE +  30)
+#define PCM512x_MASTER_CLKDIV_1   (PCM512x_PAGE_0_BASE +  32)
+#define PCM512x_MASTER_CLKDIV_2   (PCM512x_PAGE_0_BASE +  33)
+#define PCM512x_FS_SPEED_MODE     (PCM512x_PAGE_0_BASE +  34)
+#define PCM512x_IDAC_1            (PCM512x_PAGE_0_BASE +  35)
+#define PCM512x_IDAC_2            (PCM512x_PAGE_0_BASE +  36)
+#define PCM512x_ERROR_DETECT      (PCM512x_PAGE_0_BASE +  37)
+#define PCM512x_I2S_1             (PCM512x_PAGE_0_BASE +  40)
+#define PCM512x_I2S_2             (PCM512x_PAGE_0_BASE +  41)
+#define PCM512x_DAC_ROUTING       (PCM512x_PAGE_0_BASE +  42)
+#define PCM512x_DSP_PROGRAM       (PCM512x_PAGE_0_BASE +  43)
+#define PCM512x_CLKDET            (PCM512x_PAGE_0_BASE +  44)
+#define PCM512x_AUTO_MUTE         (PCM512x_PAGE_0_BASE +  59)
+#define PCM512x_DIGITAL_VOLUME_1  (PCM512x_PAGE_0_BASE +  60)
+#define PCM512x_DIGITAL_VOLUME_2  (PCM512x_PAGE_0_BASE +  61)
+#define PCM512x_DIGITAL_VOLUME_3  (PCM512x_PAGE_0_BASE +  62)
+#define PCM512x_DIGITAL_MUTE_1    (PCM512x_PAGE_0_BASE +  63)
+#define PCM512x_DIGITAL_MUTE_2    (PCM512x_PAGE_0_BASE +  64)
+#define PCM512x_DIGITAL_MUTE_3    (PCM512x_PAGE_0_BASE +  65)
+#define PCM512x_GPIO_OUTPUT_1     (PCM512x_PAGE_0_BASE +  80)
+#define PCM512x_GPIO_OUTPUT_2     (PCM512x_PAGE_0_BASE +  81)
+#define PCM512x_GPIO_OUTPUT_3     (PCM512x_PAGE_0_BASE +  82)
+#define PCM512x_GPIO_OUTPUT_4     (PCM512x_PAGE_0_BASE +  83)
+#define PCM512x_GPIO_OUTPUT_5     (PCM512x_PAGE_0_BASE +  84)
+#define PCM512x_GPIO_OUTPUT_6     (PCM512x_PAGE_0_BASE +  85)
+#define PCM512x_GPIO_CONTROL_1    (PCM512x_PAGE_0_BASE +  86)
+#define PCM512x_GPIO_CONTROL_2    (PCM512x_PAGE_0_BASE +  87)
+#define PCM512x_OVERFLOW          (PCM512x_PAGE_0_BASE +  90)
+#define PCM512x_RATE_DET_1        (PCM512x_PAGE_0_BASE +  91)
+#define PCM512x_RATE_DET_2        (PCM512x_PAGE_0_BASE +  92)
+#define PCM512x_RATE_DET_3        (PCM512x_PAGE_0_BASE +  93)
+#define PCM512x_RATE_DET_4        (PCM512x_PAGE_0_BASE +  94)
+#define PCM512x_ANALOG_MUTE_DET   (PCM512x_PAGE_0_BASE + 108)
+#define PCM512x_GPIN              (PCM512x_PAGE_0_BASE + 119)
+#define PCM512x_DIGITAL_MUTE_DET  (PCM512x_PAGE_0_BASE + 120)
+
+#define PCM512x_MAX_REGISTER      (PCM512x_PAGE_0_BASE + 120)
+
+/* Page 0, Register 1 - reset */
+#define PCM512x_RSTR (1 << 0)
+#define PCM512x_RSTM (1 << 4)
+
+/* Page 0, Register 2 - power */
+#define PCM512x_RQPD       (1 << 0)
+#define PCM512x_RQPD_SHIFT 0
+#define PCM512x_RQST       (1 << 4)
+#define PCM512x_RQST_SHIFT 4
+
+/* Page 0, Register 3 - mute */
+#define PCM512x_RQMR_SHIFT 0
+#define PCM512x_RQML_SHIFT 4
+
+/* Page 0, Register 4 - PLL */
+#define PCM512x_PLCE       (1 << 0)
+#define PCM512x_RLCE_SHIFT 0
+#define PCM512x_PLCK       (1 << 4)
+#define PCM512x_PLCK_SHIFT 4
+
+/* Page 0, Register 7 - DSP */
+#define PCM512x_SDSL       (1 << 0)
+#define PCM512x_SDSL_SHIFT 0
+#define PCM512x_DEMP       (1 << 4)
+#define PCM512x_DEMP_SHIFT 4
+
+/* Page 0, Register 13 - PLL reference */
+#define PCM512x_SREF (1 << 4)
+
+/* Page 0, Register 37 - Error detection */
+#define PCM512x_IPLK (1 << 0)
+#define PCM512x_DCAS (1 << 1)
+#define PCM512x_IDCM (1 << 2)
+#define PCM512x_IDCH (1 << 3)
+#define PCM512x_IDSK (1 << 4)
+#define PCM512x_IDBK (1 << 5)
+#define PCM512x_IDFS (1 << 6)
+
+/* Page 0, Register 42 - DAC routing */
+#define PCM512x_AUPR_SHIFT 0
+#define PCM512x_AUPL_SHIFT 4
+
+/* Page 0, Register 59 - auto mute */
+#define PCM512x_ATMR_SHIFT 0
+#define PCM512x_ATML_SHIFT 4
+
+/* Page 0, Register 63 - ramp rates */
+#define PCM512x_VNDF_SHIFT 6
+#define PCM512x_VNDS_SHIFT 4
+#define PCM512x_VNUF_SHIFT 2
+#define PCM512x_VNUS_SHIFT 0
+
+/* Page 0, Register 64 - emergency ramp rates */
+#define PCM512x_VEDF_SHIFT 6
+#define PCM512x_VEDS_SHIFT 4
+
+/* Page 0, Register 65 - Digital mute enables */
+#define PCM512x_ACTL_SHIFT 2
+#define PCM512x_AMLE_SHIFT 1
+#define PCM512x_AMLR_SHIFT 0
+
+#endif