From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/drivers/sound/wm8994.c | 877 +++++++++++++++++++++++++++++++++++++
1 file changed, 877 insertions(+)
create mode 100644 roms/u-boot/drivers/sound/wm8994.c
(limited to 'roms/u-boot/drivers/sound/wm8994.c')
diff --git a/roms/u-boot/drivers/sound/wm8994.c b/roms/u-boot/drivers/sound/wm8994.c
new file mode 100644
index 000000000..cb1e97d7a
--- /dev/null
+++ b/roms/u-boot/drivers/sound/wm8994.c
@@ -0,0 +1,877 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * R. Chandrasekar <rcsekar@samsung.com>
+ */
+#include <common.h>
+#include <audio_codec.h>
+#include <dm.h>
+#include <div64.h>
+#include <fdtdec.h>
+#include <i2c.h>
+#include <i2s.h>
+#include <log.h>
+#include <sound.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/sound.h>
+#include "wm8994.h"
+#include "wm8994_registers.h"
+
+/* defines for wm8994 system clock selection */
+#define SEL_MCLK1 0x00
+#define SEL_MCLK2 0x08
+#define SEL_FLL1 0x10
+#define SEL_FLL2 0x18
+
+/* fll config to configure fll */
+struct wm8994_fll_config {
+ int src; /* Source */
+ int in; /* Input frequency in Hz */
+ int out; /* output frequency in Hz */
+};
+
+/* codec private data */
+struct wm8994_priv {
+ enum wm8994_type type; /* codec type of wolfson */
+ int revision; /* Revision */
+ int sysclk[WM8994_MAX_AIF]; /* System clock frequency in Hz */
+ int mclk[WM8994_MAX_AIF]; /* master clock frequency in Hz */
+ int aifclk[WM8994_MAX_AIF]; /* audio interface clock in Hz */
+ struct wm8994_fll_config fll[2]; /* fll config to configure fll */
+ struct udevice *dev;
+};
+
+/* wm 8994 supported sampling rate values */
+static unsigned int src_rate[] = {
+ 8000, 11025, 12000, 16000, 22050, 24000,
+ 32000, 44100, 48000, 88200, 96000
+};
+
+/* op clock divisions */
+static int opclk_divs[] = { 10, 20, 30, 40, 55, 60, 80, 120, 160 };
+
+/* lr clock frame size ratio */
+static int fs_ratios[] = {
+ 64, 128, 192, 256, 348, 512, 768, 1024, 1408, 1536
+};
+
+/* bit clock divisors */
+static int bclk_divs[] = {
+ 10, 15, 20, 30, 40, 50, 60, 80, 110, 120, 160, 220, 240, 320, 440, 480,
+ 640, 880, 960, 1280, 1760, 1920
+};
+
+/*
+ * Writes value to a device register through i2c
+ *
+ * @param priv Private data for driver
+ * @param reg reg number to be write
+ * @param data data to be writen to the above registor
+ *
+ * @return int value 1 for change, 0 for no change or negative error code.
+ */
+static int wm8994_i2c_write(struct wm8994_priv *priv, unsigned int reg,
+ unsigned short data)
+{
+ unsigned char val[2];
+
+ val[0] = (unsigned char)((data >> 8) & 0xff);
+ val[1] = (unsigned char)(data & 0xff);
+ debug("Write Addr : 0x%04X, Data : 0x%04X\n", reg, data);
+
+ return dm_i2c_write(priv->dev, reg, val, 2);
+}
+
+/*
+ * Read a value from a device register through i2c
+ *
+ * @param priv Private data for driver
+ * @param reg reg number to be read
+ * @param data address of read data to be stored
+ *
+ * @return int value 0 for success, -1 in case of error.
+ */
+static unsigned int wm8994_i2c_read(struct wm8994_priv *priv, unsigned int reg,
+ unsigned short *data)
+{
+ unsigned char val[2];
+ int ret;
+
+ ret = dm_i2c_read(priv->dev, reg, val, 1);
+ if (ret != 0) {
+ debug("%s: Error while reading register %#04x\n",
+ __func__, reg);
+ return -1;
+ }
+
+ *data = val[0];
+ *data <<= 8;
+ *data |= val[1];
+
+ return 0;
+}
+
+/*
+ * update device register bits through i2c
+ *
+ * @param priv Private data for driver
+ * @param reg codec register
+ * @param mask register mask
+ * @param value new value
+ *
+ * @return int value 1 if change in the register value,
+ * 0 for no change or negative error code.
+ */
+static int wm8994_bic_or(struct wm8994_priv *priv, unsigned int reg,
+ unsigned short mask, unsigned short value)
+{
+ int change , ret = 0;
+ unsigned short old, new;
+
+ if (wm8994_i2c_read(priv, reg, &old) != 0)
+ return -1;
+ new = (old & ~mask) | (value & mask);
+ change = (old != new) ? 1 : 0;
+ if (change)
+ ret = wm8994_i2c_write(priv, reg, new);
+ if (ret < 0)
+ return ret;
+
+ return change;
+}
+
+/*
+ * Sets i2s set format
+ *
+ * @param priv wm8994 information
+ * @param aif_id Interface ID
+ * @param fmt i2S format
+ *
+ * @return -1 for error and 0 Success.
+ */
+static int wm8994_set_fmt(struct wm8994_priv *priv, int aif_id, uint fmt)
+{
+ int ms_reg;
+ int aif_reg;
+ int ms = 0;
+ int aif = 0;
+ int aif_clk = 0;
+ int error = 0;
+
+ switch (aif_id) {
+ case 1:
+ ms_reg = WM8994_AIF1_MASTER_SLAVE;
+ aif_reg = WM8994_AIF1_CONTROL_1;
+ aif_clk = WM8994_AIF1_CLOCKING_1;
+ break;
+ case 2:
+ ms_reg = WM8994_AIF2_MASTER_SLAVE;
+ aif_reg = WM8994_AIF2_CONTROL_1;
+ aif_clk = WM8994_AIF2_CLOCKING_1;
+ break;
+ default:
+ debug("%s: Invalid audio interface selection\n", __func__);
+ return -1;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM:
+ ms = WM8994_AIF1_MSTR;
+ break;
+ default:
+ debug("%s: Invalid i2s master selection\n", __func__);
+ return -1;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_B:
+ aif |= WM8994_AIF1_LRCLK_INV;
+ case SND_SOC_DAIFMT_DSP_A:
+ aif |= 0x18;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ aif |= 0x10;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ aif |= 0x8;
+ break;
+ default:
+ debug("%s: Invalid i2s format selection\n", __func__);
+ return -1;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ case SND_SOC_DAIFMT_DSP_B:
+ /* frame inversion not valid for DSP modes */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ aif |= WM8994_AIF1_BCLK_INV;
+ break;
+ default:
+ debug("%s: Invalid i2s frame inverse selection\n",
+ __func__);
+ return -1;
+ }
+ break;
+
+ case SND_SOC_DAIFMT_I2S:
+ case SND_SOC_DAIFMT_RIGHT_J:
+ case SND_SOC_DAIFMT_LEFT_J:
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ aif |= WM8994_AIF1_BCLK_INV | WM8994_AIF1_LRCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ aif |= WM8994_AIF1_BCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ aif |= WM8994_AIF1_LRCLK_INV;
+ break;
+ default:
+ debug("%s: Invalid i2s clock polarity selection\n",
+ __func__);
+ return -1;
+ }
+ break;
+ default:
+ debug("%s: Invalid i2s format selection\n", __func__);
+ return -1;
+ }
+
+ error = wm8994_bic_or(priv, aif_reg, WM8994_AIF1_BCLK_INV |
+ WM8994_AIF1_LRCLK_INV_MASK |
+ WM8994_AIF1_FMT_MASK, aif);
+
+ error |= wm8994_bic_or(priv, ms_reg, WM8994_AIF1_MSTR_MASK, ms);
+ error |= wm8994_bic_or(priv, aif_clk, WM8994_AIF1CLK_ENA_MASK,
+ WM8994_AIF1CLK_ENA);
+ if (error < 0) {
+ debug("%s: codec register access error\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Sets hw params FOR WM8994
+ *
+ * @param priv wm8994 information pointer
+ * @param aif_id Audio interface ID
+ * @param sampling_rate Sampling rate
+ * @param bits_per_sample Bits per sample
+ * @param Channels Channels in the given audio input
+ *
+ * @return -1 for error and 0 Success.
+ */
+static int wm8994_hw_params(struct wm8994_priv *priv, int aif_id,
+ uint sampling_rate, uint bits_per_sample,
+ uint channels)
+{
+ int aif1_reg;
+ int aif2_reg;
+ int bclk_reg;
+ int bclk = 0;
+ int rate_reg;
+ int aif1 = 0;
+ int aif2 = 0;
+ int rate_val = 0;
+ int id = aif_id - 1;
+ int i, cur_val, best_val, bclk_rate, best;
+ unsigned short reg_data;
+ int ret = 0;
+
+ switch (aif_id) {
+ case 1:
+ aif1_reg = WM8994_AIF1_CONTROL_1;
+ aif2_reg = WM8994_AIF1_CONTROL_2;
+ bclk_reg = WM8994_AIF1_BCLK;
+ rate_reg = WM8994_AIF1_RATE;
+ break;
+ case 2:
+ aif1_reg = WM8994_AIF2_CONTROL_1;
+ aif2_reg = WM8994_AIF2_CONTROL_2;
+ bclk_reg = WM8994_AIF2_BCLK;
+ rate_reg = WM8994_AIF2_RATE;
+ break;
+ default:
+ return -1;
+ }
+
+ bclk_rate = sampling_rate * 32;
+ switch (bits_per_sample) {
+ case 16:
+ bclk_rate *= 16;
+ break;
+ case 20:
+ bclk_rate *= 20;
+ aif1 |= 0x20;
+ break;
+ case 24:
+ bclk_rate *= 24;
+ aif1 |= 0x40;
+ break;
+ case 32:
+ bclk_rate *= 32;
+ aif1 |= 0x60;
+ break;
+ default:
+ return -1;
+ }
+
+ /* Try to find an appropriate sample rate; look for an exact match. */
+ for (i = 0; i < ARRAY_SIZE(src_rate); i++)
+ if (src_rate[i] == sampling_rate)
+ break;
+
+ if (i == ARRAY_SIZE(src_rate)) {
+ debug("%s: Could not get the best matching samplingrate\n",
+ __func__);
+ return -1;
+ }
+
+ rate_val |= i << WM8994_AIF1_SR_SHIFT;
+
+ /* AIFCLK/fs ratio; look for a close match in either direction */
+ best = 0;
+ best_val = abs((fs_ratios[0] * sampling_rate) - priv->aifclk[id]);
+
+ for (i = 1; i < ARRAY_SIZE(fs_ratios); i++) {
+ cur_val = abs(fs_ratios[i] * sampling_rate - priv->aifclk[id]);
+ if (cur_val >= best_val)
+ continue;
+ best = i;
+ best_val = cur_val;
+ }
+
+ rate_val |= best;
+
+ /*
+ * We may not get quite the right frequency if using
+ * approximate clocks so look for the closest match that is
+ * higher than the target (we need to ensure that there enough
+ * BCLKs to clock out the samples).
+ */
+ best = 0;
+ for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
+ cur_val = (priv->aifclk[id] * 10 / bclk_divs[i]) - bclk_rate;
+ if (cur_val < 0) /* BCLK table is sorted */
+ break;
+ best = i;
+ }
+
+ if (i == ARRAY_SIZE(bclk_divs)) {
+ debug("%s: Could not get the best matching bclk division\n",
+ __func__);
+ return -1;
+ }
+
+ bclk_rate = priv->aifclk[id] * 10 / bclk_divs[best];
+ bclk |= best << WM8994_AIF1_BCLK_DIV_SHIFT;
+
+ if (wm8994_i2c_read(priv, aif1_reg, ®_data) != 0) {
+ debug("%s: AIF1 register read Failed\n", __func__);
+ return -1;
+ }
+
+ if ((channels == 1) && ((reg_data & 0x18) == 0x18))
+ aif2 |= WM8994_AIF1_MONO;
+
+ if (priv->aifclk[id] == 0) {
+ debug("%s:Audio interface clock not set\n", __func__);
+ return -1;
+ }
+
+ ret = wm8994_bic_or(priv, aif1_reg, WM8994_AIF1_WL_MASK, aif1);
+ ret |= wm8994_bic_or(priv, aif2_reg, WM8994_AIF1_MONO, aif2);
+ ret |= wm8994_bic_or(priv, bclk_reg, WM8994_AIF1_BCLK_DIV_MASK,
+ bclk);
+ ret |= wm8994_bic_or(priv, rate_reg, WM8994_AIF1_SR_MASK |
+ WM8994_AIF1CLK_RATE_MASK, rate_val);
+
+ debug("rate vale = %x , bclk val= %x\n", rate_val, bclk);
+
+ if (ret < 0) {
+ debug("%s: codec register access error\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Configures Audio interface Clock
+ *
+ * @param priv wm8994 information pointer
+ * @param aif Audio Interface ID
+ *
+ * @return -1 for error and 0 Success.
+ */
+static int configure_aif_clock(struct wm8994_priv *priv, int aif)
+{
+ int rate;
+ int reg1 = 0;
+ int offset;
+ int ret;
+
+ /* AIF(1/0) register adress offset calculated */
+ if (aif-1)
+ offset = 4;
+ else
+ offset = 0;
+
+ switch (priv->sysclk[aif - 1]) {
+ case WM8994_SYSCLK_MCLK1:
+ reg1 |= SEL_MCLK1;
+ rate = priv->mclk[0];
+ break;
+
+ case WM8994_SYSCLK_MCLK2:
+ reg1 |= SEL_MCLK2;
+ rate = priv->mclk[1];
+ break;
+
+ case WM8994_SYSCLK_FLL1:
+ reg1 |= SEL_FLL1;
+ rate = priv->fll[0].out;
+ break;
+
+ case WM8994_SYSCLK_FLL2:
+ reg1 |= SEL_FLL2;
+ rate = priv->fll[1].out;
+ break;
+
+ default:
+ debug("%s: Invalid input clock selection [%d]\n",
+ __func__, priv->sysclk[aif - 1]);
+ return -1;
+ }
+
+ /* if input clock frequenct is more than 135Mhz then divide */
+ if (rate >= WM8994_MAX_INPUT_CLK_FREQ) {
+ rate /= 2;
+ reg1 |= WM8994_AIF1CLK_DIV;
+ }
+
+ priv->aifclk[aif - 1] = rate;
+
+ ret = wm8994_bic_or(priv, WM8994_AIF1_CLOCKING_1 + offset,
+ WM8994_AIF1CLK_SRC_MASK | WM8994_AIF1CLK_DIV,
+ reg1);
+
+ if (aif == WM8994_AIF1)
+ ret |= wm8994_bic_or(priv, WM8994_CLOCKING_1,
+ WM8994_AIF1DSPCLK_ENA_MASK | WM8994_SYSDSPCLK_ENA_MASK,
+ WM8994_AIF1DSPCLK_ENA | WM8994_SYSDSPCLK_ENA);
+ else if (aif == WM8994_AIF2)
+ ret |= wm8994_bic_or(priv, WM8994_CLOCKING_1,
+ WM8994_SYSCLK_SRC | WM8994_AIF2DSPCLK_ENA_MASK |
+ WM8994_SYSDSPCLK_ENA_MASK, WM8994_SYSCLK_SRC |
+ WM8994_AIF2DSPCLK_ENA | WM8994_SYSDSPCLK_ENA);
+
+ if (ret < 0) {
+ debug("%s: codec register access error\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Configures Audio interface for the given frequency
+ *
+ * @param priv wm8994 information
+ * @param aif_id Audio Interface
+ * @param clk_id Input Clock ID
+ * @param freq Sampling frequency in Hz
+ *
+ * @return -1 for error and 0 success.
+ */
+static int wm8994_set_sysclk(struct wm8994_priv *priv, int aif_id, int clk_id,
+ unsigned int freq)
+{
+ int i;
+ int ret = 0;
+
+ priv->sysclk[aif_id - 1] = clk_id;
+
+ switch (clk_id) {
+ case WM8994_SYSCLK_MCLK1:
+ priv->mclk[0] = freq;
+ if (aif_id == 2) {
+ ret = wm8994_bic_or(priv, WM8994_AIF1_CLOCKING_2,
+ WM8994_AIF2DAC_DIV_MASK, 0);
+ }
+ break;
+
+ case WM8994_SYSCLK_MCLK2:
+ /* TODO: Set GPIO AF */
+ priv->mclk[1] = freq;
+ break;
+
+ case WM8994_SYSCLK_FLL1:
+ case WM8994_SYSCLK_FLL2:
+ break;
+
+ case WM8994_SYSCLK_OPCLK:
+ /*
+ * Special case - a division (times 10) is given and
+ * no effect on main clocking.
+ */
+ if (freq) {
+ for (i = 0; i < ARRAY_SIZE(opclk_divs); i++)
+ if (opclk_divs[i] == freq)
+ break;
+ if (i == ARRAY_SIZE(opclk_divs)) {
+ debug("%s frequency divisor not found\n",
+ __func__);
+ return -1;
+ }
+ ret = wm8994_bic_or(priv, WM8994_CLOCKING_2,
+ WM8994_OPCLK_DIV_MASK, i);
+ ret |= wm8994_bic_or(priv, WM8994_POWER_MANAGEMENT_2,
+ WM8994_OPCLK_ENA,
+ WM8994_OPCLK_ENA);
+ } else {
+ ret |= wm8994_bic_or(priv, WM8994_POWER_MANAGEMENT_2,
+ WM8994_OPCLK_ENA, 0);
+ }
+
+ default:
+ debug("%s Invalid input clock selection [%d]\n",
+ __func__, clk_id);
+ return -1;
+ }
+
+ ret |= configure_aif_clock(priv, aif_id);
+
+ if (ret < 0) {
+ debug("%s: codec register access error\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Initializes Volume for AIF2 to HP path
+ *
+ * @param priv wm8994 information
+ * @returns -1 for error and 0 Success.
+ *
+ */
+static int wm8994_init_volume_aif2_dac1(struct wm8994_priv *priv)
+{
+ int ret;
+
+ /* Unmute AIF2DAC */
+ ret = wm8994_bic_or(priv, WM8994_AIF2_DAC_FILTERS_1,
+ WM8994_AIF2DAC_MUTE_MASK, 0);
+
+
+ ret |= wm8994_bic_or(priv, WM8994_AIF2_DAC_LEFT_VOLUME,
+ WM8994_AIF2DAC_VU_MASK | WM8994_AIF2DACL_VOL_MASK,
+ WM8994_AIF2DAC_VU | 0xff);
+
+ ret |= wm8994_bic_or(priv, WM8994_AIF2_DAC_RIGHT_VOLUME,
+ WM8994_AIF2DAC_VU_MASK | WM8994_AIF2DACR_VOL_MASK,
+ WM8994_AIF2DAC_VU | 0xff);
+
+
+ ret |= wm8994_bic_or(priv, WM8994_DAC1_LEFT_VOLUME,
+ WM8994_DAC1_VU_MASK | WM8994_DAC1L_VOL_MASK |
+ WM8994_DAC1L_MUTE_MASK, WM8994_DAC1_VU | 0xc0);
+
+ ret |= wm8994_bic_or(priv, WM8994_DAC1_RIGHT_VOLUME,
+ WM8994_DAC1_VU_MASK | WM8994_DAC1R_VOL_MASK |
+ WM8994_DAC1R_MUTE_MASK, WM8994_DAC1_VU | 0xc0);
+ /* Head Phone Volume */
+ ret |= wm8994_i2c_write(priv, WM8994_LEFT_OUTPUT_VOLUME, 0x12D);
+ ret |= wm8994_i2c_write(priv, WM8994_RIGHT_OUTPUT_VOLUME, 0x12D);
+
+ if (ret < 0) {
+ debug("%s: codec register access error\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Initializes Volume for AIF1 to HP path
+ *
+ * @param priv wm8994 information
+ * @returns -1 for error and 0 Success.
+ *
+ */
+static int wm8994_init_volume_aif1_dac1(struct wm8994_priv *priv)
+{
+ int ret = 0;
+
+ /* Unmute AIF1DAC */
+ ret |= wm8994_i2c_write(priv, WM8994_AIF1_DAC_FILTERS_1, 0x0000);
+
+ ret |= wm8994_bic_or(priv, WM8994_DAC1_LEFT_VOLUME,
+ WM8994_DAC1_VU_MASK | WM8994_DAC1L_VOL_MASK |
+ WM8994_DAC1L_MUTE_MASK, WM8994_DAC1_VU | 0xc0);
+
+ ret |= wm8994_bic_or(priv, WM8994_DAC1_RIGHT_VOLUME,
+ WM8994_DAC1_VU_MASK | WM8994_DAC1R_VOL_MASK |
+ WM8994_DAC1R_MUTE_MASK, WM8994_DAC1_VU | 0xc0);
+ /* Head Phone Volume */
+ ret |= wm8994_i2c_write(priv, WM8994_LEFT_OUTPUT_VOLUME, 0x12D);
+ ret |= wm8994_i2c_write(priv, WM8994_RIGHT_OUTPUT_VOLUME, 0x12D);
+
+ if (ret < 0) {
+ debug("%s: codec register access error\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Intialise wm8994 codec device
+ *
+ * @param priv wm8994 information
+ *
+ * @returns -1 for error and 0 Success.
+ */
+static int wm8994_device_init(struct wm8994_priv *priv)
+{
+ const char *devname;
+ unsigned short reg_data;
+ int ret;
+
+ wm8994_i2c_write(priv, WM8994_SOFTWARE_RESET, WM8994_SW_RESET);
+
+ ret = wm8994_i2c_read(priv, WM8994_SOFTWARE_RESET, ®_data);
+ if (ret < 0) {
+ debug("Failed to read ID register\n");
+ return ret;
+ }
+
+ if (reg_data == WM8994_ID) {
+ devname = "WM8994";
+ debug("Device registered as type %d\n", priv->type);
+ priv->type = WM8994;
+ } else {
+ debug("Device is not a WM8994, ID is %x\n", ret);
+ return -ENXIO;
+ }
+
+ ret = wm8994_i2c_read(priv, WM8994_CHIP_REVISION, ®_data);
+ if (ret < 0) {
+ debug("Failed to read revision register: %d\n", ret);
+ return ret;
+ }
+ priv->revision = reg_data;
+ debug("%s revision %c\n", devname, 'A' + priv->revision);
+
+ return 0;
+}
+
+static int wm8994_setup_interface(struct wm8994_priv *priv,
+ enum en_audio_interface aif_id)
+{
+ int ret;
+
+ /* VMID Selection */
+ ret = wm8994_bic_or(priv, WM8994_POWER_MANAGEMENT_1,
+ WM8994_VMID_SEL_MASK | WM8994_BIAS_ENA_MASK, 0x3);
+
+ /* Charge Pump Enable */
+ ret |= wm8994_bic_or(priv, WM8994_CHARGE_PUMP_1, WM8994_CP_ENA_MASK,
+ WM8994_CP_ENA);
+
+ /* Head Phone Power Enable */
+ ret |= wm8994_bic_or(priv, WM8994_POWER_MANAGEMENT_1,
+ WM8994_HPOUT1L_ENA_MASK, WM8994_HPOUT1L_ENA);
+
+ ret |= wm8994_bic_or(priv, WM8994_POWER_MANAGEMENT_1,
+ WM8994_HPOUT1R_ENA_MASK, WM8994_HPOUT1R_ENA);
+
+ if (aif_id == WM8994_AIF1) {
+ ret |= wm8994_i2c_write(priv, WM8994_POWER_MANAGEMENT_2,
+ WM8994_TSHUT_ENA | WM8994_MIXINL_ENA |
+ WM8994_MIXINR_ENA | WM8994_IN2L_ENA |
+ WM8994_IN2R_ENA);
+
+ ret |= wm8994_i2c_write(priv, WM8994_POWER_MANAGEMENT_4,
+ WM8994_ADCL_ENA | WM8994_ADCR_ENA |
+ WM8994_AIF1ADC1R_ENA |
+ WM8994_AIF1ADC1L_ENA);
+
+ /* Power enable for AIF1 and DAC1 */
+ ret |= wm8994_i2c_write(priv, WM8994_POWER_MANAGEMENT_5,
+ WM8994_AIF1DACL_ENA |
+ WM8994_AIF1DACR_ENA |
+ WM8994_DAC1L_ENA | WM8994_DAC1R_ENA);
+ } else if (aif_id == WM8994_AIF2) {
+ /* Power enable for AIF2 and DAC1 */
+ ret |= wm8994_bic_or(priv, WM8994_POWER_MANAGEMENT_5,
+ WM8994_AIF2DACL_ENA_MASK | WM8994_AIF2DACR_ENA_MASK |
+ WM8994_DAC1L_ENA_MASK | WM8994_DAC1R_ENA_MASK,
+ WM8994_AIF2DACL_ENA | WM8994_AIF2DACR_ENA |
+ WM8994_DAC1L_ENA | WM8994_DAC1R_ENA);
+ }
+ /* Head Phone Initialisation */
+ ret |= wm8994_bic_or(priv, WM8994_ANALOGUE_HP_1,
+ WM8994_HPOUT1L_DLY_MASK | WM8994_HPOUT1R_DLY_MASK,
+ WM8994_HPOUT1L_DLY | WM8994_HPOUT1R_DLY);
+
+ ret |= wm8994_bic_or(priv, WM8994_DC_SERVO_1,
+ WM8994_DCS_ENA_CHAN_0_MASK |
+ WM8994_DCS_ENA_CHAN_1_MASK , WM8994_DCS_ENA_CHAN_0 |
+ WM8994_DCS_ENA_CHAN_1);
+
+ ret |= wm8994_bic_or(priv, WM8994_ANALOGUE_HP_1,
+ WM8994_HPOUT1L_DLY_MASK |
+ WM8994_HPOUT1R_DLY_MASK | WM8994_HPOUT1L_OUTP_MASK |
+ WM8994_HPOUT1R_OUTP_MASK |
+ WM8994_HPOUT1L_RMV_SHORT_MASK |
+ WM8994_HPOUT1R_RMV_SHORT_MASK, WM8994_HPOUT1L_DLY |
+ WM8994_HPOUT1R_DLY | WM8994_HPOUT1L_OUTP |
+ WM8994_HPOUT1R_OUTP | WM8994_HPOUT1L_RMV_SHORT |
+ WM8994_HPOUT1R_RMV_SHORT);
+
+ /* MIXER Config DAC1 to HP */
+ ret |= wm8994_bic_or(priv, WM8994_OUTPUT_MIXER_1,
+ WM8994_DAC1L_TO_HPOUT1L_MASK,
+ WM8994_DAC1L_TO_HPOUT1L);
+
+ ret |= wm8994_bic_or(priv, WM8994_OUTPUT_MIXER_2,
+ WM8994_DAC1R_TO_HPOUT1R_MASK,
+ WM8994_DAC1R_TO_HPOUT1R);
+
+ if (aif_id == WM8994_AIF1) {
+ /* Routing AIF1 to DAC1 */
+ ret |= wm8994_i2c_write(priv, WM8994_DAC1_LEFT_MIXER_ROUTING,
+ WM8994_AIF1DAC1L_TO_DAC1L);
+
+ ret |= wm8994_i2c_write(priv, WM8994_DAC1_RIGHT_MIXER_ROUTING,
+ WM8994_AIF1DAC1R_TO_DAC1R);
+
+ /* GPIO Settings for AIF1 */
+ ret |= wm8994_i2c_write(priv, WM8994_GPIO_1,
+ WM8994_GPIO_DIR_OUTPUT |
+ WM8994_GPIO_FUNCTION_I2S_CLK |
+ WM8994_GPIO_INPUT_DEBOUNCE);
+
+ ret |= wm8994_init_volume_aif1_dac1(priv);
+ } else if (aif_id == WM8994_AIF2) {
+ /* Routing AIF2 to DAC1 */
+ ret |= wm8994_bic_or(priv, WM8994_DAC1_LEFT_MIXER_ROUTING,
+ WM8994_AIF2DACL_TO_DAC1L_MASK,
+ WM8994_AIF2DACL_TO_DAC1L);
+
+ ret |= wm8994_bic_or(priv, WM8994_DAC1_RIGHT_MIXER_ROUTING,
+ WM8994_AIF2DACR_TO_DAC1R_MASK,
+ WM8994_AIF2DACR_TO_DAC1R);
+
+ /* GPIO Settings for AIF2 */
+ /* B CLK */
+ ret |= wm8994_bic_or(priv, WM8994_GPIO_3, WM8994_GPIO_DIR_MASK |
+ WM8994_GPIO_FUNCTION_MASK,
+ WM8994_GPIO_DIR_OUTPUT);
+
+ /* LR CLK */
+ ret |= wm8994_bic_or(priv, WM8994_GPIO_4, WM8994_GPIO_DIR_MASK |
+ WM8994_GPIO_FUNCTION_MASK,
+ WM8994_GPIO_DIR_OUTPUT);
+
+ /* DATA */
+ ret |= wm8994_bic_or(priv, WM8994_GPIO_5, WM8994_GPIO_DIR_MASK |
+ WM8994_GPIO_FUNCTION_MASK,
+ WM8994_GPIO_DIR_OUTPUT);
+
+ ret |= wm8994_init_volume_aif2_dac1(priv);
+ }
+
+ if (ret < 0)
+ goto err;
+
+ debug("%s: Codec chip setup ok\n", __func__);
+ return 0;
+err:
+ debug("%s: Codec chip setup error\n", __func__);
+ return -1;
+}
+
+static int _wm8994_init(struct wm8994_priv *priv,
+ enum en_audio_interface aif_id, int sampling_rate,
+ int mclk_freq, int bits_per_sample,
+ unsigned int channels)
+{
+ int ret;
+
+ ret = wm8994_setup_interface(priv, aif_id);
+ if (ret < 0) {
+ debug("%s: wm8994 codec chip init failed\n", __func__);
+ return ret;
+ }
+
+ ret = wm8994_set_sysclk(priv, aif_id, WM8994_SYSCLK_MCLK1, mclk_freq);
+ if (ret < 0) {
+ debug("%s: wm8994 codec set sys clock failed\n", __func__);
+ return ret;
+ }
+
+ ret = wm8994_hw_params(priv, aif_id, sampling_rate, bits_per_sample,
+ channels);
+
+ if (ret == 0) {
+ ret = wm8994_set_fmt(priv, aif_id, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS);
+ }
+
+ return ret;
+}
+
+static int wm8994_set_params(struct udevice *dev, int interface, int rate,
+ int mclk_freq, int bits_per_sample, uint channels)
+{
+ struct wm8994_priv *priv = dev_get_priv(dev);
+
+ return _wm8994_init(priv, interface, rate, mclk_freq, bits_per_sample,
+ channels);
+}
+
+static int wm8994_probe(struct udevice *dev)
+{
+ struct wm8994_priv *priv = dev_get_priv(dev);
+
+ priv->dev = dev;
+ return wm8994_device_init(priv);
+}
+
+static const struct audio_codec_ops wm8994_ops = {
+ .set_params = wm8994_set_params,
+};
+
+static const struct udevice_id wm8994_ids[] = {
+ { .compatible = "wolfson,wm8994" },
+ { }
+};
+
+U_BOOT_DRIVER(wm8994) = {
+ .name = "wm8994",
+ .id = UCLASS_AUDIO_CODEC,
+ .of_match = wm8994_ids,
+ .probe = wm8994_probe,
+ .ops = &wm8994_ops,
+ .priv_auto = sizeof(struct wm8994_priv),
+};
--
cgit