ASoC: wcd938x: Add support for wcd938x codec

WCD938x codec is a soundwire based codec that supports AMICs, DMICs,
Headphones, Ear and Aux paths. Add support to enable all device
paths of wcd938x codec.

Change-Id: I81b5e603ef73afba74b8d2274012752f9ca5cb6f
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>

asoc/codecs/wcd938x/internal.h

@@ -0,0 +1,182 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _WCD938X_INTERNAL_H
+#define _WCD938X_INTERNAL_H
+
+#include <asoc/wcd-mbhc-v2.h>
+#include <asoc/wcd-irq.h>
+#include "wcd938x-mbhc.h"
+
+#define WCD938X_MAX_MICBIAS 4
+
+/* Convert from vout ctl to micbias voltage in mV */
+#define  WCD_VOUT_CTL_TO_MICB(v)  (1000 + v * 50)
+#define MAX_PORT 8
+#define MAX_CH_PER_PORT 8
+
+enum {
+	TX_HDR12 = 0,
+	TX_HDR34,
+	TX_HDR_MAX,
+};
+
+extern struct regmap_config wcd938x_regmap_config;
+
+struct codec_port_info {
+	u32 slave_port_type;
+	u32 master_port_type;
+	u32 ch_mask;
+	u32 num_ch;
+	u32 ch_rate;
+};
+
+struct wcd938x_priv {
+	struct device *dev;
+
+	int variant;
+	struct snd_soc_component *component;
+	struct device_node *rst_np;
+	struct regmap *regmap;
+
+	struct swr_device *rx_swr_dev;
+	struct swr_device *tx_swr_dev;
+
+	s32 micb_ref[WCD938X_MAX_MICBIAS];
+	s32 pullup_ref[WCD938X_MAX_MICBIAS];
+
+	struct fw_info *fw_data;
+	struct device_node *wcd_rst_np;
+
+	struct mutex micb_lock;
+	s32 dmic_0_1_clk_cnt;
+	s32 dmic_2_3_clk_cnt;
+	s32 dmic_4_5_clk_cnt;
+	s32 dmic_6_7_clk_cnt;
+	int hdr_en[TX_HDR_MAX];
+	/* class h specific info */
+	struct wcd_clsh_cdc_info clsh_info;
+	/* mbhc module */
+	struct wcd938x_mbhc *mbhc;
+
+	u32 hph_mode;
+	bool comp1_enable;
+	bool comp2_enable;
+
+	struct irq_domain *virq;
+	struct wcd_irq_info irq_info;
+	u32 rx_clk_cnt;
+	int num_irq_regs;
+	/* to track the status */
+	unsigned long status_mask;
+
+	u8 num_tx_ports;
+	u8 num_rx_ports;
+	struct codec_port_info
+			tx_port_mapping[MAX_PORT][MAX_CH_PER_PORT];
+	struct codec_port_info
+			rx_port_mapping[MAX_PORT][MAX_CH_PER_PORT];
+	struct regulator_bulk_data *supplies;
+
+	struct notifier_block nblock;
+	/* wcd callback to bolero */
+	void *handle;
+	int (*update_wcd_event)(void *handle, u16 event, u32 data);
+	int (*register_notifier)(void *handle,
+				struct notifier_block *nblock,
+				bool enable);
+	u32 version;
+	/* Entry for version info */
+	struct snd_info_entry *entry;
+	struct snd_info_entry *version_entry;
+};
+
+struct wcd938x_micbias_setting {
+	u8 ldoh_v;
+	u32 cfilt1_mv;
+	u32 micb1_mv;
+	u32 micb2_mv;
+	u32 micb3_mv;
+	u32 micb4_mv;
+	u8 bias1_cfilt_sel;
+};
+
+struct wcd938x_pdata {
+	struct device_node *rst_np;
+	struct device_node *rx_slave;
+	struct device_node *tx_slave;
+	struct wcd938x_micbias_setting micbias;
+
+	struct cdc_regulator *regulator;
+	int num_supplies;
+};
+
+struct wcd_ctrl_platform_data {
+	void *handle;
+	int (*update_wcd_event)(void *handle, u16 event, u32 data);
+	int (*register_notifier)(void *handle,
+				 struct notifier_block *nblock,
+				 bool enable);
+};
+
+enum {
+	WCD_RX1,
+	WCD_RX2,
+	WCD_RX3
+};
+
+enum {
+	BOLERO_WCD_EVT_TX_CH_HOLD_CLEAR = 1,
+	BOLERO_WCD_EVT_PA_OFF_PRE_SSR,
+	BOLERO_WCD_EVT_SSR_DOWN,
+	BOLERO_WCD_EVT_SSR_UP,
+	BOLERO_WCD_EVT_CLK_NOTIFY,
+};
+
+enum {
+	WCD_BOLERO_EVT_RX_MUTE = 1,	/* for RX mute/unmute */
+	WCD_BOLERO_EVT_IMPED_TRUE,	/* for imped true */
+	WCD_BOLERO_EVT_IMPED_FALSE,	/* for imped false */
+};
+
+enum {
+	/* INTR_CTRL_INT_MASK_0 */
+	WCD938X_IRQ_MBHC_BUTTON_RELEASE_DET = 0,
+	WCD938X_IRQ_MBHC_BUTTON_PRESS_DET,
+	WCD938X_IRQ_MBHC_ELECT_INS_REM_DET,
+	WCD938X_IRQ_MBHC_ELECT_INS_REM_LEG_DET,
+	WCD938X_IRQ_MBHC_SW_DET,
+	WCD938X_IRQ_HPHR_OCP_INT,
+	WCD938X_IRQ_HPHR_CNP_INT,
+	WCD938X_IRQ_HPHL_OCP_INT,
+
+	/* INTR_CTRL_INT_MASK_1 */
+	WCD938X_IRQ_HPHL_CNP_INT,
+	WCD938X_IRQ_EAR_CNP_INT,
+	WCD938X_IRQ_EAR_SCD_INT,
+	WCD938X_IRQ_AUX_CNP_INT,
+	WCD938X_IRQ_AUX_SCD_INT,
+	WCD938X_IRQ_HPHL_PDM_WD_INT,
+	WCD938X_IRQ_HPHR_PDM_WD_INT,
+	WCD938X_IRQ_AUX_PDM_WD_INT,
+
+	/* INTR_CTRL_INT_MASK_2 */
+	WCD938X_IRQ_LDORT_SCD_INT,
+	WCD938X_IRQ_MBHC_MOISTURE_INT,
+	WCD938X_IRQ_HPHL_SURGE_DET_INT,
+	WCD938X_IRQ_HPHR_SURGE_DET_INT,
+	WCD938X_NUM_IRQS,
+};
+
+extern struct wcd938x_mbhc *wcd938x_soc_get_mbhc(
+				struct snd_soc_component *component);
+extern int wcd938x_mbhc_micb_adjust_voltage(struct snd_soc_component *component,
+					int volt, int micb_num);
+extern int wcd938x_get_micb_vout_ctl_val(u32 micb_mv);
+extern int wcd938x_micbias_control(struct snd_soc_component *component,
+			int micb_num, int req, bool is_dapm);
+extern int wcd938x_info_create_codec_entry(struct snd_info_entry *codec_root,
+				    struct snd_soc_component *component);
+#endif /* _WCD938X_INTERNAL_H */