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776 lines
20 KiB
776 lines
20 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier |
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* |
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* Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com |
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* |
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* Author: Dan Murphy <[email protected]> |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/errno.h> |
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#include <linux/device.h> |
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#include <linux/i2c.h> |
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#include <linux/gpio.h> |
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#include <linux/of_gpio.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/regmap.h> |
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#include <linux/slab.h> |
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#include <linux/gpio/consumer.h> |
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#include <linux/regulator/consumer.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include <sound/soc-dapm.h> |
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#include <sound/tlv.h> |
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#include <sound/tas2552-plat.h> |
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#include <dt-bindings/sound/tas2552.h> |
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#include "tas2552.h" |
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static const struct reg_default tas2552_reg_defs[] = { |
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{TAS2552_CFG_1, 0x22}, |
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{TAS2552_CFG_3, 0x80}, |
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{TAS2552_DOUT, 0x00}, |
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{TAS2552_OUTPUT_DATA, 0xc0}, |
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{TAS2552_PDM_CFG, 0x01}, |
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{TAS2552_PGA_GAIN, 0x00}, |
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{TAS2552_BOOST_APT_CTRL, 0x0f}, |
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{TAS2552_RESERVED_0D, 0xbe}, |
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{TAS2552_LIMIT_RATE_HYS, 0x08}, |
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{TAS2552_CFG_2, 0xef}, |
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{TAS2552_SER_CTRL_1, 0x00}, |
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{TAS2552_SER_CTRL_2, 0x00}, |
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{TAS2552_PLL_CTRL_1, 0x10}, |
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{TAS2552_PLL_CTRL_2, 0x00}, |
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{TAS2552_PLL_CTRL_3, 0x00}, |
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{TAS2552_BTIP, 0x8f}, |
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{TAS2552_BTS_CTRL, 0x80}, |
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{TAS2552_LIMIT_RELEASE, 0x04}, |
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{TAS2552_LIMIT_INT_COUNT, 0x00}, |
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{TAS2552_EDGE_RATE_CTRL, 0x40}, |
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{TAS2552_VBAT_DATA, 0x00}, |
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}; |
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#define TAS2552_NUM_SUPPLIES 3 |
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static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = { |
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"vbat", /* vbat voltage */ |
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"iovdd", /* I/O Voltage */ |
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"avdd", /* Analog DAC Voltage */ |
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}; |
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struct tas2552_data { |
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struct snd_soc_component *component; |
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struct regmap *regmap; |
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struct i2c_client *tas2552_client; |
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struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES]; |
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struct gpio_desc *enable_gpio; |
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unsigned char regs[TAS2552_VBAT_DATA]; |
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unsigned int pll_clkin; |
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int pll_clk_id; |
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unsigned int pdm_clk; |
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int pdm_clk_id; |
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unsigned int dai_fmt; |
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unsigned int tdm_delay; |
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}; |
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static int tas2552_post_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *kcontrol, int event) |
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{ |
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struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); |
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switch (event) { |
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case SND_SOC_DAPM_POST_PMU: |
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snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0); |
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snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), |
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(1 << 5)); |
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snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0); |
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snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0); |
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break; |
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case SND_SOC_DAPM_POST_PMD: |
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snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, |
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TAS2552_SWS); |
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snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1); |
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snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0); |
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snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe); |
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break; |
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} |
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return 0; |
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} |
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/* Input mux controls */ |
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static const char * const tas2552_input_texts[] = { |
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"Digital", "Analog" }; |
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static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7, |
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tas2552_input_texts); |
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static const struct snd_kcontrol_new tas2552_input_mux_control = |
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SOC_DAPM_ENUM("Route", tas2552_input_mux_enum); |
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static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] = |
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{ |
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SND_SOC_DAPM_INPUT("IN"), |
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/* MUX Controls */ |
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SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0, |
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&tas2552_input_mux_control), |
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SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0), |
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SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0), |
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SND_SOC_DAPM_POST("Post Event", tas2552_post_event), |
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SND_SOC_DAPM_OUTPUT("OUT") |
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}; |
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static const struct snd_soc_dapm_route tas2552_audio_map[] = { |
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{"DAC", NULL, "DAC IN"}, |
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{"Input selection", "Digital", "DAC"}, |
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{"Input selection", "Analog", "IN"}, |
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{"ClassD", NULL, "Input selection"}, |
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{"OUT", NULL, "ClassD"}, |
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{"ClassD", NULL, "PLL"}, |
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}; |
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#ifdef CONFIG_PM |
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static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown) |
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{ |
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u8 cfg1_reg = 0; |
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if (!tas2552->component) |
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return; |
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if (sw_shutdown) |
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cfg1_reg = TAS2552_SWS; |
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snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS, |
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cfg1_reg); |
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} |
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#endif |
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static int tas2552_setup_pll(struct snd_soc_component *component, |
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struct snd_pcm_hw_params *params) |
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{ |
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struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); |
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bool bypass_pll = false; |
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unsigned int pll_clk = params_rate(params) * 512; |
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unsigned int pll_clkin = tas2552->pll_clkin; |
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u8 pll_enable; |
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if (!pll_clkin) { |
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if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK) |
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return -EINVAL; |
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pll_clkin = snd_soc_params_to_bclk(params); |
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pll_clkin += tas2552->tdm_delay; |
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} |
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pll_enable = snd_soc_component_read(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE; |
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snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0); |
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if (pll_clkin == pll_clk) |
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bypass_pll = true; |
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if (bypass_pll) { |
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/* By pass the PLL configuration */ |
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snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2, |
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TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS); |
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} else { |
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/* Fill in the PLL control registers for J & D |
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* pll_clk = (.5 * pll_clkin * J.D) / 2^p |
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* Need to fill in J and D here based on incoming freq |
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*/ |
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unsigned int d, q, t; |
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u8 j; |
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u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK; |
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u8 p = snd_soc_component_read(component, TAS2552_PLL_CTRL_1); |
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p = (p >> 7); |
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recalc: |
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t = (pll_clk * 2) << p; |
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j = t / pll_clkin; |
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d = t % pll_clkin; |
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t = pll_clkin / 10000; |
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q = d / (t + 1); |
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d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000; |
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if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) { |
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if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) { |
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pll_clkin = 1800000; |
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pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) & |
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TAS2552_PLL_SRC_MASK; |
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} else { |
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pll_clkin = snd_soc_params_to_bclk(params); |
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pll_clkin += tas2552->tdm_delay; |
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pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) & |
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TAS2552_PLL_SRC_MASK; |
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} |
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goto recalc; |
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} |
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snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK, |
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pll_sel); |
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snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1, |
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TAS2552_PLL_J_MASK, j); |
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/* Will clear the PLL_BYPASS bit */ |
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snd_soc_component_write(component, TAS2552_PLL_CTRL_2, |
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TAS2552_PLL_D_UPPER(d)); |
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snd_soc_component_write(component, TAS2552_PLL_CTRL_3, |
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TAS2552_PLL_D_LOWER(d)); |
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} |
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/* Restore PLL status */ |
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snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, |
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pll_enable); |
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return 0; |
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} |
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static int tas2552_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params, |
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struct snd_soc_dai *dai) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); |
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int cpf; |
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u8 ser_ctrl1_reg, wclk_rate; |
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switch (params_width(params)) { |
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case 16: |
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ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT; |
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cpf = 32 + tas2552->tdm_delay; |
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break; |
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case 20: |
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ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT; |
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cpf = 64 + tas2552->tdm_delay; |
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break; |
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case 24: |
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ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT; |
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cpf = 64 + tas2552->tdm_delay; |
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break; |
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case 32: |
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ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT; |
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cpf = 64 + tas2552->tdm_delay; |
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break; |
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default: |
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dev_err(component->dev, "Not supported sample size: %d\n", |
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params_width(params)); |
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return -EINVAL; |
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} |
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if (cpf <= 32) |
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ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32; |
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else if (cpf <= 64) |
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ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64; |
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else if (cpf <= 128) |
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ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128; |
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else |
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ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256; |
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snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, |
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TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK, |
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ser_ctrl1_reg); |
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switch (params_rate(params)) { |
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case 8000: |
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wclk_rate = TAS2552_WCLK_FREQ_8KHZ; |
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break; |
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case 11025: |
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case 12000: |
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wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ; |
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break; |
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case 16000: |
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wclk_rate = TAS2552_WCLK_FREQ_16KHZ; |
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break; |
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case 22050: |
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case 24000: |
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wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ; |
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break; |
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case 32000: |
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wclk_rate = TAS2552_WCLK_FREQ_32KHZ; |
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break; |
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case 44100: |
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case 48000: |
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wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ; |
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break; |
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case 88200: |
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case 96000: |
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wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ; |
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break; |
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case 176400: |
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case 192000: |
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wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ; |
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break; |
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default: |
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dev_err(component->dev, "Not supported sample rate: %d\n", |
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params_rate(params)); |
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return -EINVAL; |
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} |
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snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK, |
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wclk_rate); |
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return tas2552_setup_pll(component, params); |
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} |
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#define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \ |
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TAS2552_WCLKDIR | \ |
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TAS2552_DATAFORMAT_MASK) |
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static int tas2552_prepare(struct snd_pcm_substream *substream, |
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struct snd_soc_dai *dai) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); |
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int delay = 0; |
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/* TDM slot selection only valid in DSP_A/_B mode */ |
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if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A) |
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delay += (tas2552->tdm_delay + 1); |
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else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B) |
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delay += tas2552->tdm_delay; |
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/* Configure data delay */ |
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snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay); |
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return 0; |
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} |
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static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); |
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u8 serial_format; |
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
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case SND_SOC_DAIFMT_CBS_CFS: |
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serial_format = 0x00; |
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break; |
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case SND_SOC_DAIFMT_CBS_CFM: |
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serial_format = TAS2552_WCLKDIR; |
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break; |
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case SND_SOC_DAIFMT_CBM_CFS: |
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serial_format = TAS2552_BCLKDIR; |
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break; |
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case SND_SOC_DAIFMT_CBM_CFM: |
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serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR); |
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break; |
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default: |
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dev_vdbg(component->dev, "DAI Format master is not found\n"); |
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return -EINVAL; |
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} |
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switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK | |
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SND_SOC_DAIFMT_INV_MASK)) { |
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case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF): |
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break; |
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case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF): |
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case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF): |
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serial_format |= TAS2552_DATAFORMAT_DSP; |
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break; |
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case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF): |
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serial_format |= TAS2552_DATAFORMAT_RIGHT_J; |
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break; |
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case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF): |
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serial_format |= TAS2552_DATAFORMAT_LEFT_J; |
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break; |
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default: |
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dev_vdbg(component->dev, "DAI Format is not found\n"); |
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return -EINVAL; |
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} |
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tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; |
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snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK, |
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serial_format); |
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return 0; |
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} |
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static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, |
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unsigned int freq, int dir) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); |
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u8 reg, mask, val; |
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switch (clk_id) { |
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case TAS2552_PLL_CLKIN_MCLK: |
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case TAS2552_PLL_CLKIN_IVCLKIN: |
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if (freq < 512000 || freq > 24576000) { |
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/* out of range PLL_CLKIN, fall back to use BCLK */ |
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dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n", |
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freq); |
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clk_id = TAS2552_PLL_CLKIN_BCLK; |
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freq = 0; |
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} |
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fallthrough; |
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case TAS2552_PLL_CLKIN_BCLK: |
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case TAS2552_PLL_CLKIN_1_8_FIXED: |
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mask = TAS2552_PLL_SRC_MASK; |
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val = (clk_id << 3) & mask; /* bit 4:5 in the register */ |
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reg = TAS2552_CFG_1; |
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tas2552->pll_clk_id = clk_id; |
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tas2552->pll_clkin = freq; |
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break; |
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case TAS2552_PDM_CLK_PLL: |
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case TAS2552_PDM_CLK_IVCLKIN: |
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case TAS2552_PDM_CLK_BCLK: |
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case TAS2552_PDM_CLK_MCLK: |
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mask = TAS2552_PDM_CLK_SEL_MASK; |
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val = (clk_id >> 1) & mask; /* bit 0:1 in the register */ |
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reg = TAS2552_PDM_CFG; |
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tas2552->pdm_clk_id = clk_id; |
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tas2552->pdm_clk = freq; |
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break; |
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default: |
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dev_err(component->dev, "Invalid clk id: %d\n", clk_id); |
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return -EINVAL; |
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} |
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|
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snd_soc_component_update_bits(component, reg, mask, val); |
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|
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return 0; |
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} |
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static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai, |
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unsigned int tx_mask, unsigned int rx_mask, |
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int slots, int slot_width) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); |
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unsigned int lsb; |
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if (unlikely(!tx_mask)) { |
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dev_err(component->dev, "tx masks need to be non 0\n"); |
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return -EINVAL; |
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} |
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|
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/* TDM based on DSP mode requires slots to be adjacent */ |
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lsb = __ffs(tx_mask); |
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if ((lsb + 1) != __fls(tx_mask)) { |
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dev_err(component->dev, "Invalid mask, slots must be adjacent\n"); |
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return -EINVAL; |
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} |
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tas2552->tdm_delay = lsb * slot_width; |
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|
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/* DOUT in high-impedance on inactive bit clocks */ |
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snd_soc_component_update_bits(component, TAS2552_DOUT, |
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TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE); |
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|
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return 0; |
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} |
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static int tas2552_mute(struct snd_soc_dai *dai, int mute, int direction) |
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{ |
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u8 cfg1_reg = 0; |
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struct snd_soc_component *component = dai->component; |
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|
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if (mute) |
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cfg1_reg |= TAS2552_MUTE; |
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|
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snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg); |
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|
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return 0; |
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} |
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|
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#ifdef CONFIG_PM |
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static int tas2552_runtime_suspend(struct device *dev) |
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{ |
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struct tas2552_data *tas2552 = dev_get_drvdata(dev); |
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|
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tas2552_sw_shutdown(tas2552, 1); |
|
|
|
regcache_cache_only(tas2552->regmap, true); |
|
regcache_mark_dirty(tas2552->regmap); |
|
|
|
gpiod_set_value(tas2552->enable_gpio, 0); |
|
|
|
return 0; |
|
} |
|
|
|
static int tas2552_runtime_resume(struct device *dev) |
|
{ |
|
struct tas2552_data *tas2552 = dev_get_drvdata(dev); |
|
|
|
gpiod_set_value(tas2552->enable_gpio, 1); |
|
|
|
tas2552_sw_shutdown(tas2552, 0); |
|
|
|
regcache_cache_only(tas2552->regmap, false); |
|
regcache_sync(tas2552->regmap); |
|
|
|
return 0; |
|
} |
|
#endif |
|
|
|
static const struct dev_pm_ops tas2552_pm = { |
|
SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume, |
|
NULL) |
|
}; |
|
|
|
static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = { |
|
.hw_params = tas2552_hw_params, |
|
.prepare = tas2552_prepare, |
|
.set_sysclk = tas2552_set_dai_sysclk, |
|
.set_fmt = tas2552_set_dai_fmt, |
|
.set_tdm_slot = tas2552_set_dai_tdm_slot, |
|
.mute_stream = tas2552_mute, |
|
.no_capture_mute = 1, |
|
}; |
|
|
|
/* Formats supported by TAS2552 driver. */ |
|
#define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
|
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
|
|
|
/* TAS2552 dai structure. */ |
|
static struct snd_soc_dai_driver tas2552_dai[] = { |
|
{ |
|
.name = "tas2552-amplifier", |
|
.playback = { |
|
.stream_name = "Playback", |
|
.channels_min = 2, |
|
.channels_max = 2, |
|
.rates = SNDRV_PCM_RATE_8000_192000, |
|
.formats = TAS2552_FORMATS, |
|
}, |
|
.ops = &tas2552_speaker_dai_ops, |
|
}, |
|
}; |
|
|
|
/* |
|
* DAC digital volumes. From -7 to 24 dB in 1 dB steps |
|
*/ |
|
static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0); |
|
|
|
static const char * const tas2552_din_source_select[] = { |
|
"Muted", |
|
"Left", |
|
"Right", |
|
"Left + Right average", |
|
}; |
|
static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum, |
|
TAS2552_CFG_3, 3, |
|
tas2552_din_source_select); |
|
|
|
static const struct snd_kcontrol_new tas2552_snd_controls[] = { |
|
SOC_SINGLE_TLV("Speaker Driver Playback Volume", |
|
TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv), |
|
SOC_ENUM("DIN source", tas2552_din_source_enum), |
|
}; |
|
|
|
static int tas2552_component_probe(struct snd_soc_component *component) |
|
{ |
|
struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); |
|
int ret; |
|
|
|
tas2552->component = component; |
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), |
|
tas2552->supplies); |
|
|
|
if (ret != 0) { |
|
dev_err(component->dev, "Failed to enable supplies: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
|
|
gpiod_set_value(tas2552->enable_gpio, 1); |
|
|
|
ret = pm_runtime_get_sync(component->dev); |
|
if (ret < 0) { |
|
dev_err(component->dev, "Enabling device failed: %d\n", |
|
ret); |
|
goto probe_fail; |
|
} |
|
|
|
snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE); |
|
snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL | |
|
TAS2552_DIN_SRC_SEL_AVG_L_R); |
|
snd_soc_component_write(component, TAS2552_OUTPUT_DATA, |
|
TAS2552_PDM_DATA_SEL_V_I | |
|
TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA)); |
|
snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 | |
|
TAS2552_APT_THRESH_20_17); |
|
|
|
snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN | |
|
TAS2552_LIM_EN); |
|
|
|
return 0; |
|
|
|
probe_fail: |
|
pm_runtime_put_noidle(component->dev); |
|
gpiod_set_value(tas2552->enable_gpio, 0); |
|
|
|
regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), |
|
tas2552->supplies); |
|
return ret; |
|
} |
|
|
|
static void tas2552_component_remove(struct snd_soc_component *component) |
|
{ |
|
struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); |
|
|
|
pm_runtime_put(component->dev); |
|
|
|
gpiod_set_value(tas2552->enable_gpio, 0); |
|
}; |
|
|
|
#ifdef CONFIG_PM |
|
static int tas2552_suspend(struct snd_soc_component *component) |
|
{ |
|
struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); |
|
int ret; |
|
|
|
ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), |
|
tas2552->supplies); |
|
|
|
if (ret != 0) |
|
dev_err(component->dev, "Failed to disable supplies: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
|
|
static int tas2552_resume(struct snd_soc_component *component) |
|
{ |
|
struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); |
|
int ret; |
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), |
|
tas2552->supplies); |
|
|
|
if (ret != 0) { |
|
dev_err(component->dev, "Failed to enable supplies: %d\n", |
|
ret); |
|
} |
|
|
|
return ret; |
|
} |
|
#else |
|
#define tas2552_suspend NULL |
|
#define tas2552_resume NULL |
|
#endif |
|
|
|
static const struct snd_soc_component_driver soc_component_dev_tas2552 = { |
|
.probe = tas2552_component_probe, |
|
.remove = tas2552_component_remove, |
|
.suspend = tas2552_suspend, |
|
.resume = tas2552_resume, |
|
.controls = tas2552_snd_controls, |
|
.num_controls = ARRAY_SIZE(tas2552_snd_controls), |
|
.dapm_widgets = tas2552_dapm_widgets, |
|
.num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets), |
|
.dapm_routes = tas2552_audio_map, |
|
.num_dapm_routes = ARRAY_SIZE(tas2552_audio_map), |
|
.idle_bias_on = 1, |
|
.endianness = 1, |
|
.non_legacy_dai_naming = 1, |
|
}; |
|
|
|
static const struct regmap_config tas2552_regmap_config = { |
|
.reg_bits = 8, |
|
.val_bits = 8, |
|
|
|
.max_register = TAS2552_MAX_REG, |
|
.reg_defaults = tas2552_reg_defs, |
|
.num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs), |
|
.cache_type = REGCACHE_RBTREE, |
|
}; |
|
|
|
static int tas2552_probe(struct i2c_client *client, |
|
const struct i2c_device_id *id) |
|
{ |
|
struct device *dev; |
|
struct tas2552_data *data; |
|
int ret; |
|
int i; |
|
|
|
dev = &client->dev; |
|
data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); |
|
if (data == NULL) |
|
return -ENOMEM; |
|
|
|
data->enable_gpio = devm_gpiod_get_optional(dev, "enable", |
|
GPIOD_OUT_LOW); |
|
if (IS_ERR(data->enable_gpio)) |
|
return PTR_ERR(data->enable_gpio); |
|
|
|
data->tas2552_client = client; |
|
data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config); |
|
if (IS_ERR(data->regmap)) { |
|
ret = PTR_ERR(data->regmap); |
|
dev_err(&client->dev, "Failed to allocate register map: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->supplies); i++) |
|
data->supplies[i].supply = tas2552_supply_names[i]; |
|
|
|
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies), |
|
data->supplies); |
|
if (ret != 0) { |
|
dev_err(dev, "Failed to request supplies: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
pm_runtime_set_active(&client->dev); |
|
pm_runtime_set_autosuspend_delay(&client->dev, 1000); |
|
pm_runtime_use_autosuspend(&client->dev); |
|
pm_runtime_enable(&client->dev); |
|
pm_runtime_mark_last_busy(&client->dev); |
|
pm_runtime_put_sync_autosuspend(&client->dev); |
|
|
|
dev_set_drvdata(&client->dev, data); |
|
|
|
ret = devm_snd_soc_register_component(&client->dev, |
|
&soc_component_dev_tas2552, |
|
tas2552_dai, ARRAY_SIZE(tas2552_dai)); |
|
if (ret < 0) { |
|
dev_err(&client->dev, "Failed to register component: %d\n", ret); |
|
pm_runtime_get_noresume(&client->dev); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int tas2552_i2c_remove(struct i2c_client *client) |
|
{ |
|
pm_runtime_disable(&client->dev); |
|
return 0; |
|
} |
|
|
|
static const struct i2c_device_id tas2552_id[] = { |
|
{ "tas2552", 0 }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, tas2552_id); |
|
|
|
#if IS_ENABLED(CONFIG_OF) |
|
static const struct of_device_id tas2552_of_match[] = { |
|
{ .compatible = "ti,tas2552", }, |
|
{}, |
|
}; |
|
MODULE_DEVICE_TABLE(of, tas2552_of_match); |
|
#endif |
|
|
|
static struct i2c_driver tas2552_i2c_driver = { |
|
.driver = { |
|
.name = "tas2552", |
|
.of_match_table = of_match_ptr(tas2552_of_match), |
|
.pm = &tas2552_pm, |
|
}, |
|
.probe = tas2552_probe, |
|
.remove = tas2552_i2c_remove, |
|
.id_table = tas2552_id, |
|
}; |
|
|
|
module_i2c_driver(tas2552_i2c_driver); |
|
|
|
MODULE_AUTHOR("Dan Muprhy <[email protected]>"); |
|
MODULE_DESCRIPTION("TAS2552 Audio amplifier driver"); |
|
MODULE_LICENSE("GPL");
|
|
|