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linux/sound/soc/codecs/rt1318.c
Christophe JAILLET ab73c7c0e5
ASoC: rt1318: Constify struct reg_sequence 
'struct reg_sequence' is not modified in this driver.

Constifying this structure moves some data to a read-only section, so
increase overall security.

While at it, remove rt1318_INIT_REG_LEN which is ununsed.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
  22062	   4859	     32	  26953	   6949	sound/soc/codecs/rt1318.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  24742	   2171	     32	  26945	   6941	sound/soc/codecs/rt1318.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/96561dd2962d4312eb0e68ab850027f44350d070.1722952334.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-08-13 12:41:40 +01:00

1354 lines
34 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-only
//
// rt1318.c -- RT1318 ALSA SoC audio amplifier driver
// Author: Jack Yu <jack.yu@realtek.com>
//
// Copyright(c) 2024 Realtek Semiconductor Corp.
//
//
#include <linux/acpi.h>
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/regmap.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/firmware.h>
#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/rt1318.h>
#include "rt1318.h"
static const struct reg_sequence init_list[] = {
{ 0x0000C000, 0x01},
{ 0x0000F20D, 0x00},
{ 0x0000F212, 0x3E},
{ 0x0000C001, 0x02},
{ 0x0000C003, 0x22},
{ 0x0000C004, 0x44},
{ 0x0000C005, 0x44},
{ 0x0000C007, 0x64},
{ 0x0000C00E, 0xE7},
{ 0x0000F223, 0x7F},
{ 0x0000F224, 0xDB},
{ 0x0000F225, 0xEE},
{ 0x0000F226, 0x3F},
{ 0x0000F227, 0x0F},
{ 0x0000F21A, 0x78},
{ 0x0000F242, 0x3C},
{ 0x0000C120, 0x40},
{ 0x0000C125, 0x03},
{ 0x0000C321, 0x0A},
{ 0x0000C200, 0xD8},
{ 0x0000C201, 0x27},
{ 0x0000C202, 0x0F},
{ 0x0000C400, 0x0E},
{ 0x0000C401, 0x43},
{ 0x0000C402, 0xE0},
{ 0x0000C403, 0x00},
{ 0x0000C404, 0x4C},
{ 0x0000C406, 0x40},
{ 0x0000C407, 0x02},
{ 0x0000C408, 0x3F},
{ 0x0000C300, 0x01},
{ 0x0000C125, 0x03},
{ 0x0000DF00, 0x10},
{ 0x0000F20B, 0x2A},
{ 0x0000DF5F, 0x01},
{ 0x0000DF60, 0xA7},
{ 0x0000C203, 0x84},
{ 0x0000C206, 0x78},
{ 0x0000F10A, 0x09},
{ 0x0000F10B, 0x4C},
{ 0x0000F104, 0xF4},
{ 0x0000F105, 0x03},
{ 0x0000F109, 0xE0},
{ 0x0000F10B, 0x5C},
{ 0x0000F104, 0xF4},
{ 0x0000F105, 0x04},
{ 0x0000F109, 0x65},
{ 0x0000F10B, 0x5C},
{ 0x0000F104, 0xF4},
{ 0x0000F105, 0x02},
{ 0x0000F109, 0x30},
{ 0x0000F10B, 0x5C},
{ 0x0000E706, 0x0F},
{ 0x0000E707, 0x30},
{ 0x0000E806, 0x0F},
{ 0x0000E807, 0x30},
{ 0x0000CE04, 0x03},
{ 0x0000CE05, 0x5F},
{ 0x0000CE06, 0xA2},
{ 0x0000CE07, 0x6B},
{ 0x0000CF04, 0x03},
{ 0x0000CF05, 0x5F},
{ 0x0000CF06, 0xA2},
{ 0x0000CF07, 0x6B},
{ 0x0000CE60, 0xE3},
{ 0x0000C130, 0x51},
{ 0x0000E000, 0xA8},
{ 0x0000F102, 0x00},
{ 0x0000F103, 0x00},
{ 0x0000F104, 0xF5},
{ 0x0000F105, 0x23},
{ 0x0000F109, 0x04},
{ 0x0000F10A, 0x0B},
{ 0x0000F10B, 0x4C},
{ 0x0000F10B, 0x5C},
{ 0x41001888, 0x00},
{ 0x0000C121, 0x0B},
{ 0x0000F102, 0x00},
{ 0x0000F103, 0x00},
{ 0x0000F104, 0xF5},
{ 0x0000F105, 0x23},
{ 0x0000F109, 0x00},
{ 0x0000F10A, 0x0B},
{ 0x0000F10B, 0x4C},
{ 0x0000F10B, 0x5C},
{ 0x0000F800, 0x20},
{ 0x0000CA00, 0x80},
{ 0x0000CA10, 0x00},
{ 0x0000CA02, 0x78},
{ 0x0000CA12, 0x78},
{ 0x0000ED00, 0x90},
{ 0x0000E604, 0x00},
{ 0x0000DB00, 0x0C},
{ 0x0000DD00, 0x0C},
{ 0x0000DC19, 0x00},
{ 0x0000DC1A, 0x6A},
{ 0x0000DC1B, 0xAA},
{ 0x0000DC1C, 0xAB},
{ 0x0000DC1D, 0x00},
{ 0x0000DC1E, 0x16},
{ 0x0000DC1F, 0xDB},
{ 0x0000DC20, 0x6D},
{ 0x0000DE19, 0x00},
{ 0x0000DE1A, 0x6A},
{ 0x0000DE1B, 0xAA},
{ 0x0000DE1C, 0xAB},
{ 0x0000DE1D, 0x00},
{ 0x0000DE1E, 0x16},
{ 0x0000DE1F, 0xDB},
{ 0x0000DE20, 0x6D},
{ 0x0000DB32, 0x00},
{ 0x0000DD32, 0x00},
{ 0x0000DB33, 0x0A},
{ 0x0000DD33, 0x0A},
{ 0x0000DB34, 0x1A},
{ 0x0000DD34, 0x1A},
{ 0x0000DB15, 0xEF},
{ 0x0000DD15, 0xEF},
{ 0x0000DB17, 0xEF},
{ 0x0000DD17, 0xEF},
{ 0x0000DB94, 0x70},
{ 0x0000DD94, 0x70},
{ 0x0000DB19, 0x40},
{ 0x0000DD19, 0x40},
{ 0x0000DB12, 0xC0},
{ 0x0000DD12, 0xC0},
{ 0x0000DB00, 0x4C},
{ 0x0000DB04, 0x05},
{ 0x0000DB05, 0x03},
{ 0x0000DD04, 0x05},
{ 0x0000DD05, 0x03},
{ 0x0000DBBB, 0x09},
{ 0x0000DBBC, 0x30},
{ 0x0000DBBD, 0xF0},
{ 0x0000DBBE, 0xF1},
{ 0x0000DDBB, 0x09},
{ 0x0000DDBC, 0x30},
{ 0x0000DDBD, 0xF0},
{ 0x0000DDBE, 0xF1},
{ 0x0000DB01, 0x79},
{ 0x0000DD01, 0x79},
{ 0x0000DB08, 0x40},
{ 0x0000DD08, 0x40},
{ 0x0000DC52, 0xEF},
{ 0x0000DE52, 0xEF},
{ 0x0000DB00, 0xCC},
{ 0x0000CC2C, 0x00},
{ 0x0000CC2D, 0x2A},
{ 0x0000CC2E, 0x83},
{ 0x0000CC2F, 0xA8},
{ 0x0000CD2C, 0x00},
{ 0x0000CD2D, 0x2A},
{ 0x0000CD2E, 0x83},
{ 0x0000CD2F, 0xA8},
{ 0x0000CC24, 0x00},
{ 0x0000CC25, 0x51},
{ 0x0000CC26, 0xEB},
{ 0x0000CC27, 0x85},
{ 0x0000CD24, 0x00},
{ 0x0000CD25, 0x51},
{ 0x0000CD26, 0xEB},
{ 0x0000CD27, 0x85},
{ 0x0000CC20, 0x00},
{ 0x0000CC21, 0x00},
{ 0x0000CC22, 0x43},
{ 0x0000CD20, 0x00},
{ 0x0000CD21, 0x00},
{ 0x0000CD22, 0x43},
{ 0x0000CC16, 0x0F},
{ 0x0000CC17, 0x00},
{ 0x0000CD16, 0x0F},
{ 0x0000CD17, 0x00},
{ 0x0000CC29, 0x5D},
{ 0x0000CC2A, 0xC0},
{ 0x0000CD29, 0x5D},
{ 0x0000CD2A, 0xC0},
{ 0x0000CC31, 0x20},
{ 0x0000CC32, 0x00},
{ 0x0000CC33, 0x00},
{ 0x0000CC34, 0x00},
{ 0x0000CD31, 0x20},
{ 0x0000CD32, 0x00},
{ 0x0000CD33, 0x00},
{ 0x0000CD34, 0x00},
{ 0x0000CC36, 0x79},
{ 0x0000CC37, 0x99},
{ 0x0000CC38, 0x99},
{ 0x0000CC39, 0x99},
{ 0x0000CD36, 0x79},
{ 0x0000CD37, 0x99},
{ 0x0000CD38, 0x99},
{ 0x0000CD39, 0x99},
{ 0x0000CC09, 0x00},
{ 0x0000CC0A, 0x07},
{ 0x0000CC0B, 0x5F},
{ 0x0000CC0C, 0x6F},
{ 0x0000CD09, 0x00},
{ 0x0000CD0A, 0x07},
{ 0x0000CD0B, 0x5F},
{ 0x0000CD0C, 0x6F},
{ 0x0000CC0E, 0x00},
{ 0x0000CC0F, 0x03},
{ 0x0000CC10, 0xAF},
{ 0x0000CC11, 0xB7},
{ 0x0000CD0E, 0x00},
{ 0x0000CD0F, 0x03},
{ 0x0000CD10, 0xAF},
{ 0x0000CD11, 0xB7},
{ 0x0000CCD6, 0x00},
{ 0x0000CCD7, 0x03},
{ 0x0000CDD6, 0x00},
{ 0x0000CDD7, 0x03},
{ 0x0000CCD8, 0x00},
{ 0x0000CCD9, 0x03},
{ 0x0000CDD8, 0x00},
{ 0x0000CDD9, 0x03},
{ 0x0000CCDA, 0x00},
{ 0x0000CCDB, 0x03},
{ 0x0000CDDA, 0x00},
{ 0x0000CDDB, 0x03},
{ 0x0000C320, 0x20},
{ 0x0000C203, 0x9C},
};
static const struct reg_default rt1318_reg[] = {
{ 0xc000, 0x00 },
{ 0xc001, 0x43 },
{ 0xc003, 0x22 },
{ 0xc004, 0x44 },
{ 0xc005, 0x44 },
{ 0xc006, 0x33 },
{ 0xc007, 0x64 },
{ 0xc008, 0x05 },
{ 0xc00a, 0xfc },
{ 0xc00b, 0x0f },
{ 0xc00c, 0x0e },
{ 0xc00d, 0xef },
{ 0xc00e, 0xe5 },
{ 0xc00f, 0xff },
{ 0xc120, 0xc0 },
{ 0xc121, 0x00 },
{ 0xc122, 0x00 },
{ 0xc123, 0x14 },
{ 0xc125, 0x00 },
{ 0xc130, 0x59 },
{ 0xc200, 0x00 },
{ 0xc201, 0x00 },
{ 0xc202, 0x00 },
{ 0xc203, 0x04 },
{ 0xc204, 0x00 },
{ 0xc205, 0x00 },
{ 0xc206, 0x68 },
{ 0xc207, 0x70 },
{ 0xc208, 0x00 },
{ 0xc20a, 0x00 },
{ 0xc20b, 0x01 },
{ 0xc20c, 0x7f },
{ 0xc20d, 0x01 },
{ 0xc20e, 0x7f },
{ 0xc300, 0x00 },
{ 0xc301, 0x00 },
{ 0xc303, 0x80 },
{ 0xc320, 0x00 },
{ 0xc321, 0x09 },
{ 0xc322, 0x02 },
{ 0xc400, 0x00 },
{ 0xc401, 0x00 },
{ 0xc402, 0x00 },
{ 0xc403, 0x00 },
{ 0xc404, 0x00 },
{ 0xc405, 0x00 },
{ 0xc406, 0x00 },
{ 0xc407, 0x00 },
{ 0xc408, 0x00 },
{ 0xc410, 0x04 },
{ 0xc430, 0x00 },
{ 0xc431, 0x00 },
{ 0xca00, 0x10 },
{ 0xca01, 0x00 },
{ 0xca02, 0x0b },
{ 0xca10, 0x10 },
{ 0xca11, 0x00 },
{ 0xca12, 0x0b },
{ 0xce04, 0x08 },
{ 0xce05, 0x00 },
{ 0xce06, 0x00 },
{ 0xce07, 0x00 },
{ 0xce60, 0x63 },
{ 0xcf04, 0x08 },
{ 0xcf05, 0x00 },
{ 0xcf06, 0x00 },
{ 0xcf07, 0x00 },
{ 0xdb00, 0x00 },
{ 0xdb08, 0x40 },
{ 0xdb12, 0x00 },
{ 0xdb35, 0x00 },
{ 0xdbb5, 0x00 },
{ 0xdbb6, 0x40 },
{ 0xdbb7, 0x00 },
{ 0xdbb8, 0x00 },
{ 0xdbc5, 0x00 },
{ 0xdbc6, 0x00 },
{ 0xdbc7, 0x00 },
{ 0xdbc8, 0x00 },
{ 0xdd08, 0x40 },
{ 0xdd12, 0x00 },
{ 0xdd35, 0x00 },
{ 0xddb5, 0x00 },
{ 0xddb6, 0x40 },
{ 0xddb7, 0x00 },
{ 0xddb8, 0x00 },
{ 0xddc5, 0x00 },
{ 0xddc6, 0x00 },
{ 0xddc7, 0x00 },
{ 0xddc8, 0x00 },
{ 0xdd93, 0x00 },
{ 0xdd94, 0x64 },
{ 0xdf00, 0x00 },
{ 0xdf5f, 0x00 },
{ 0xdf60, 0x00 },
{ 0xe000, 0x08 },
{ 0xe300, 0xa0 },
{ 0xe400, 0x22 },
{ 0xe706, 0x2f },
{ 0xe707, 0x2f },
{ 0xe806, 0x2f },
{ 0xe807, 0x2f },
{ 0xea00, 0x43 },
{ 0xed00, 0x80 },
{ 0xed01, 0x0f },
{ 0xed02, 0xff },
{ 0xed03, 0x00 },
{ 0xed04, 0x00 },
{ 0xed05, 0x0f },
{ 0xed06, 0xff },
{ 0xf010, 0x10 },
{ 0xf011, 0xec },
{ 0xf012, 0x68 },
{ 0xf013, 0x21 },
{ 0xf102, 0x00 },
{ 0xf103, 0x00 },
{ 0xf104, 0x00 },
{ 0xf105, 0x00 },
{ 0xf106, 0x00 },
{ 0xf107, 0x00 },
{ 0xf108, 0x00 },
{ 0xf109, 0x00 },
{ 0xf10a, 0x03 },
{ 0xf10b, 0x40 },
{ 0xf20b, 0x28 },
{ 0xf20d, 0x00 },
{ 0xf212, 0x00 },
{ 0xf21a, 0x00 },
{ 0xf223, 0x40 },
{ 0xf224, 0x00 },
{ 0xf225, 0x00 },
{ 0xf226, 0x00 },
{ 0xf227, 0x00 },
{ 0xf242, 0x0c },
{ 0xf800, 0x00 },
{ 0xf801, 0x12 },
{ 0xf802, 0xe0 },
{ 0xf803, 0x2f },
{ 0xf804, 0x00 },
{ 0xf805, 0x00 },
{ 0xf806, 0x07 },
{ 0xf807, 0xff },
};
static bool rt1318_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0xc000:
case 0xc301:
case 0xc410:
case 0xc430 ... 0xc431:
case 0xdb06:
case 0xdb12:
case 0xdb1d ... 0xdb1f:
case 0xdb35:
case 0xdb37:
case 0xdb8a ... 0xdb92:
case 0xdbc5 ... 0xdbc8:
case 0xdc2b ... 0xdc49:
case 0xdd0b:
case 0xdd12:
case 0xdd1d ... 0xdd1f:
case 0xdd35:
case 0xdd8a ... 0xdd92:
case 0xddc5 ... 0xddc8:
case 0xde2b ... 0xde44:
case 0xdf4a ... 0xdf55:
case 0xe224 ... 0xe23b:
case 0xea01:
case 0xebc5:
case 0xebc8:
case 0xebcb ... 0xebcc:
case 0xed03 ... 0xed06:
case 0xf010 ... 0xf014:
return true;
default:
return false;
}
}
static bool rt1318_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0xc000 ... 0xc00f:
case 0xc120 ... 0xc130:
case 0xc200 ... 0xc20e:
case 0xc300 ... 0xc303:
case 0xc320 ... 0xc322:
case 0xc400 ... 0xc408:
case 0xc430 ... 0xc431:
case 0xca00 ... 0xca02:
case 0xca10 ... 0xca12:
case 0xcb00 ... 0xcb0b:
case 0xcc00 ... 0xcce5:
case 0xcd00 ... 0xcde5:
case 0xce00 ... 0xce6a:
case 0xcf00 ... 0xcf53:
case 0xd000 ... 0xd0cc:
case 0xd100 ... 0xd1b9:
case 0xdb00 ... 0xdc53:
case 0xdd00 ... 0xde53:
case 0xdf00 ... 0xdf6b:
case 0xe000:
case 0xe300:
case 0xe400:
case 0xe706 ... 0xe707:
case 0xe806 ... 0xe807:
case 0xea00:
case 0xeb00 ... 0xebcc:
case 0xec00 ... 0xecb9:
case 0xed00 ... 0xed06:
case 0xf010 ... 0xf014:
case 0xf102 ... 0xf10b:
case 0xf20b:
case 0xf20d ... 0xf242:
case 0xf800 ... 0xf807:
return true;
default:
return false;
}
}
static int rt1318_dac_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
regmap_update_bits(rt1318->regmap, RT1318_PWR_STA1,
RT1318_PDB_CTRL_MASK, RT1318_PDB_CTRL_HIGH);
break;
case SND_SOC_DAPM_POST_PMD:
regmap_update_bits(rt1318->regmap, RT1318_PWR_STA1,
RT1318_PDB_CTRL_MASK, RT1318_PDB_CTRL_LOW);
break;
default:
break;
}
return 0;
}
static int rt1318_dvol_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
rt1318->rt1318_dvol = ucontrol->value.integer.value[0];
if (rt1318->rt1318_dvol <= RT1318_DVOL_STEP && rt1318->rt1318_dvol >= 0) {
regmap_write(rt1318->regmap, RT1318_DA_VOL_L_8,
rt1318->rt1318_dvol >> 8);
regmap_write(rt1318->regmap, RT1318_DA_VOL_L_1_7,
rt1318->rt1318_dvol & 0xff);
regmap_write(rt1318->regmap, RT1318_DA_VOL_R_8,
rt1318->rt1318_dvol >> 8);
regmap_write(rt1318->regmap, RT1318_DA_VOL_R_1_7,
rt1318->rt1318_dvol & 0xff);
return 1;
}
return 0;
}
static int rt1318_dvol_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
ucontrol->value.integer.value[0] = rt1318->rt1318_dvol;
return 0;
}
static const struct snd_kcontrol_new rt1318_snd_controls[] = {
SOC_SINGLE_EXT("Amp Playback Volume", SND_SOC_NOPM, 0, 383, 0,
rt1318_dvol_get, rt1318_dvol_put),
};
static const struct snd_soc_dapm_widget rt1318_dapm_widgets[] = {
/* Audio Interface */
SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
/* DACs */
SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0,
rt1318_dac_event, SND_SOC_DAPM_PRE_PMU |
SND_SOC_DAPM_POST_PMD),
/* Output Lines */
SND_SOC_DAPM_OUTPUT("Amp"),
};
static const struct snd_soc_dapm_route rt1318_dapm_routes[] = {
{"DAC", NULL, "AIF1RX"},
{"Amp", NULL, "DAC"},
};
static int rt1318_get_clk_info(int sclk, int rate)
{
int i, pd[] = {1, 2, 4, 8, 16, 24};
if (sclk <= 0 || rate <= 0)
return -EINVAL;
rate = rate << 8;
for (i = 0; i < ARRAY_SIZE(pd); i++)
if (sclk == rate * pd[i])
return i;
return -EINVAL;
}
static int rt1318_clk_ip_info(struct snd_soc_component *component, int lrclk)
{
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
switch (lrclk) {
case RT1318_LRCLK_48000:
case RT1318_LRCLK_44100:
case RT1318_LRCLK_16000:
regmap_update_bits(rt1318->regmap, RT1318_SRC_TCON,
RT1318_SRCIN_F12288_MASK | RT1318_SRCIN_DACLK_MASK,
RT1318_SRCIN_TCON4 | RT1318_DACLK_TCON4);
break;
case RT1318_LRCLK_96000:
regmap_update_bits(rt1318->regmap, RT1318_SRC_TCON,
RT1318_SRCIN_F12288_MASK | RT1318_SRCIN_DACLK_MASK,
RT1318_SRCIN_TCON4 | RT1318_DACLK_TCON2);
break;
case RT1318_LRCLK_192000:
regmap_update_bits(rt1318->regmap, RT1318_SRC_TCON,
RT1318_SRCIN_F12288_MASK | RT1318_SRCIN_DACLK_MASK,
RT1318_SRCIN_TCON4 | RT1318_DACLK_TCON1);
break;
default:
dev_err(component->dev, "Unsupported clock rate.\n");
return -EINVAL;
}
return 0;
}
static int rt1318_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
int data_len = 0, ch_len = 0;
int pre_div, ret;
rt1318->lrck = params_rate(params);
pre_div = rt1318_get_clk_info(rt1318->sysclk, rt1318->lrck);
if (pre_div < 0) {
dev_err(component->dev, "Unsupported clock setting\n");
return -EINVAL;
}
ret = rt1318_clk_ip_info(component, rt1318->lrck);
if (ret < 0) {
dev_err(component->dev, "Unsupported clock setting\n");
return -EINVAL;
}
switch (params_width(params)) {
case 16:
break;
case 20:
data_len = RT1318_I2S_DL_20;
ch_len = RT1318_I2S_DL_20;
break;
case 24:
data_len = RT1318_I2S_DL_24;
ch_len = RT1318_I2S_DL_24;
break;
case 32:
data_len = RT1318_I2S_DL_32;
ch_len = RT1318_I2S_DL_32;
break;
case 8:
data_len = RT1318_I2S_DL_8;
ch_len = RT1318_I2S_DL_8;
break;
default:
return -EINVAL;
}
regmap_update_bits(rt1318->regmap, RT1318_CLK2,
RT1318_DIV_AP_MASK | RT1318_DIV_DAMOD_MASK,
pre_div << RT1318_DIV_AP_SFT |
pre_div << RT1318_DIV_DAMOD_SFT);
regmap_update_bits(rt1318->regmap, RT1318_CLK3,
RT1318_AD_STO1_MASK | RT1318_AD_STO2_MASK,
pre_div << RT1318_AD_STO1_SFT |
pre_div << RT1318_AD_STO2_SFT);
regmap_update_bits(rt1318->regmap, RT1318_CLK4,
RT1318_AD_ANA_STO1_MASK | RT1318_AD_ANA_STO2_MASK,
pre_div << RT1318_AD_ANA_STO1_SFT |
pre_div << RT1318_AD_ANA_STO2_SFT);
regmap_update_bits(rt1318->regmap, RT1318_CLK5,
RT1318_DIV_FIFO_IN_MASK | RT1318_DIV_FIFO_OUT_MASK,
pre_div << RT1318_DIV_FIFO_IN_SFT |
pre_div << RT1318_DIV_FIFO_OUT_SFT);
regmap_update_bits(rt1318->regmap, RT1318_CLK6,
RT1318_DIV_NLMS_MASK | RT1318_DIV_AD_MONO_MASK |
RT1318_DIV_POST_G_MASK, pre_div << RT1318_DIV_NLMS_SFT |
pre_div << RT1318_DIV_AD_MONO_SFT |
pre_div << RT1318_DIV_POST_G_SFT);
regmap_update_bits(rt1318->regmap, RT1318_TDM_CTRL2,
RT1318_I2S_DL_MASK, data_len << RT1318_I2S_DL_SFT);
regmap_update_bits(rt1318->regmap, RT1318_TDM_CTRL3,
RT1318_I2S_TX_CHL_MASK | RT1318_I2S_RX_CHL_MASK,
ch_len << RT1318_I2S_TX_CHL_SFT |
ch_len << RT1318_I2S_RX_CHL_SFT);
return 0;
}
static int rt1318_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_component *component = dai->component;
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
unsigned int reg_val = 0, reg_val2 = 0;
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_NF:
reg_val2 |= RT1318_TDM_BCLK_INV;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
break;
case SND_SOC_DAIFMT_LEFT_J:
reg_val |= RT1318_FMT_LEFT_J;
break;
case SND_SOC_DAIFMT_DSP_A:
reg_val |= RT1318_FMT_PCM_A_R;
break;
case SND_SOC_DAIFMT_DSP_B:
reg_val |= RT1318_FMT_PCM_B_R;
break;
default:
return -EINVAL;
}
regmap_update_bits(rt1318->regmap, RT1318_TDM_CTRL1,
RT1318_I2S_FMT_MASK, reg_val);
regmap_update_bits(rt1318->regmap, RT1318_TDM_CTRL1,
RT1318_TDM_BCLK_MASK, reg_val2);
return 0;
}
static int rt1318_set_dai_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = dai->component;
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
int reg_val = 0;
if (freq == rt1318->sysclk && clk_id == rt1318->sysclk_src)
return 0;
switch (clk_id) {
case RT1318_SCLK_S_BCLK:
reg_val |= RT1318_SYSCLK_BCLK;
break;
case RT1318_SCLK_S_SDW:
reg_val |= RT1318_SYSCLK_SDW;
break;
case RT1318_SCLK_S_PLL2F:
reg_val |= RT1318_SYSCLK_PLL2F;
break;
case RT1318_SCLK_S_PLL2B:
reg_val |= RT1318_SYSCLK_PLL2B;
break;
case RT1318_SCLK_S_MCLK:
reg_val |= RT1318_SYSCLK_MCLK;
break;
case RT1318_SCLK_S_RC0:
reg_val |= RT1318_SYSCLK_RC1;
break;
case RT1318_SCLK_S_RC1:
reg_val |= RT1318_SYSCLK_RC2;
break;
case RT1318_SCLK_S_RC2:
reg_val |= RT1318_SYSCLK_RC3;
break;
default:
dev_err(component->dev, "Invalid clock id (%d)\n", clk_id);
return -EINVAL;
}
rt1318->sysclk = freq;
rt1318->sysclk_src = clk_id;
dev_dbg(dai->dev, "Sysclk is %dHz and clock id is %d\n", freq, clk_id);
regmap_update_bits(rt1318->regmap, RT1318_CLK1,
RT1318_SYSCLK_SEL_MASK, reg_val);
return 0;
}
static const struct pll_calc_map pll_preset_table[] = {
{512000, 4096000, 22, 190, 0, true, false},
{1024000, 4096000, 22, 94, 0, true, false},
{1024000, 16384000, 4, 190, 0, true, false},
{1411200, 11289600, 6, 62, 0, true, false},
{1536000, 12288000, 6, 62, 0, true, false},
{2822400, 11289600, 6, 62, 0, true, false},
{2822400, 45158400, 0, 62, 0, true, false},
{2822400, 49152000, 0, 62, 0, true, false},
{3072000, 12288000, 6, 62, 0, true, false},
{3072000, 24576000, 2, 62, 0, true, false},
{3072000, 49152000, 0, 62, 0, true, false},
{6144000, 24576000, 2, 94, 4, false, false},
{6144000, 49152000, 0, 30, 0, true, false},
{6144000, 98304000, 0, 94, 4, false, true},
{12288000, 49152000, 0, 62, 6, false, false},
};
static int rt1318_pll_calc(const unsigned int freq_in,
const unsigned int freq_out, struct rt1318_pll_code *pll_code)
{
int max_n = RT1318_PLL_N_MAX, max_m = RT1318_PLL_M_MAX;
int i, k, red, n_t, pll_out, in_t, out_t;
int n = 0, m = 0, m_t = 0;
int red_t = abs(freq_out - freq_in);
bool m_bypass = false, k_bypass = false;
if (RT1318_PLL_INP_MAX < freq_in || RT1318_PLL_INP_MIN > freq_in)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(pll_preset_table); i++) {
if (freq_in == pll_preset_table[i].pll_in &&
freq_out == pll_preset_table[i].pll_out) {
k = pll_preset_table[i].k;
m = pll_preset_table[i].m;
n = pll_preset_table[i].n;
m_bypass = pll_preset_table[i].m_bp;
k_bypass = pll_preset_table[i].k_bp;
goto code_find;
}
}
k = 100000000 / freq_out - 2;
if (k > RT1318_PLL_K_MAX)
k = RT1318_PLL_K_MAX;
if (k < 0) {
k = 0;
k_bypass = true;
}
for (n_t = 0; n_t <= max_n; n_t++) {
in_t = freq_in / (k_bypass ? 1 : (k + 2));
pll_out = freq_out / (n_t + 2);
if (in_t < 0)
continue;
if (in_t == pll_out) {
m_bypass = true;
n = n_t;
goto code_find;
}
red = abs(in_t - pll_out);
if (red < red_t) {
m_bypass = true;
n = n_t;
m = m_t;
if (red == 0)
goto code_find;
red_t = red;
}
for (m_t = 0; m_t <= max_m; m_t++) {
out_t = in_t / (m_t + 2);
red = abs(out_t - pll_out);
if (red < red_t) {
m_bypass = false;
n = n_t;
m = m_t;
if (red == 0)
goto code_find;
red_t = red;
}
}
}
pr_debug("Only get approximation about PLL\n");
code_find:
pll_code->m_bp = m_bypass;
pll_code->k_bp = k_bypass;
pll_code->m_code = m;
pll_code->n_code = n;
pll_code->k_code = k;
return 0;
}
static int rt1318_set_dai_pll(struct snd_soc_dai *dai, int pll_id, int source,
unsigned int freq_in, unsigned int freq_out)
{
struct snd_soc_component *component = dai->component;
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
struct rt1318_pll_code pll_code;
int ret;
if (!freq_in || !freq_out) {
dev_dbg(component->dev, "PLL disabled\n");
rt1318->pll_in = 0;
rt1318->pll_out = 0;
return 0;
}
if (source == rt1318->pll_src && freq_in == rt1318->pll_in &&
freq_out == rt1318->pll_out)
return 0;
switch (source) {
case RT1318_PLL_S_BCLK0:
regmap_update_bits(rt1318->regmap, RT1318_CLK1,
RT1318_PLLIN_MASK, RT1318_PLLIN_BCLK0);
break;
case RT1318_PLL_S_BCLK1:
regmap_update_bits(rt1318->regmap, RT1318_CLK1,
RT1318_PLLIN_MASK, RT1318_PLLIN_BCLK1);
break;
case RT1318_PLL_S_RC:
regmap_update_bits(rt1318->regmap, RT1318_CLK1,
RT1318_PLLIN_MASK, RT1318_PLLIN_RC);
break;
case RT1318_PLL_S_MCLK:
regmap_update_bits(rt1318->regmap, RT1318_CLK1,
RT1318_PLLIN_MASK, RT1318_PLLIN_MCLK);
break;
case RT1318_PLL_S_SDW_IN_PLL:
regmap_update_bits(rt1318->regmap, RT1318_CLK1,
RT1318_PLLIN_MASK, RT1318_PLLIN_SDW1);
break;
case RT1318_PLL_S_SDW_0:
regmap_update_bits(rt1318->regmap, RT1318_CLK1,
RT1318_PLLIN_MASK, RT1318_PLLIN_SDW2);
break;
case RT1318_PLL_S_SDW_1:
regmap_update_bits(rt1318->regmap, RT1318_CLK1,
RT1318_PLLIN_MASK, RT1318_PLLIN_SDW3);
break;
case RT1318_PLL_S_SDW_2:
regmap_update_bits(rt1318->regmap, RT1318_CLK1,
RT1318_PLLIN_MASK, RT1318_PLLIN_SDW4);
break;
default:
dev_err(component->dev, "Unknown PLL source %d\n", source);
return -EINVAL;
}
ret = rt1318_pll_calc(freq_in, freq_out, &pll_code);
if (ret < 0) {
dev_err(component->dev, "Unsupport input clock %d\n", freq_in);
return ret;
}
dev_dbg(component->dev, "bypass=%d m=%d n=%d k=%d\n",
pll_code.m_bp, (pll_code.m_bp ? 0 : pll_code.m_code),
pll_code.n_code, pll_code.k_code);
regmap_update_bits(rt1318->regmap, RT1318_PLL1_K,
RT1318_K_PLL1_MASK, pll_code.k_code);
regmap_update_bits(rt1318->regmap, RT1318_PLL1_M,
RT1318_M_PLL1_MASK, (pll_code.m_bp ? 0 : pll_code.m_code));
regmap_update_bits(rt1318->regmap, RT1318_PLL1_N_8,
RT1318_N_8_PLL1_MASK, pll_code.n_code >> 8);
regmap_update_bits(rt1318->regmap, RT1318_PLL1_N_7_0,
RT1318_N_7_0_PLL1_MASK, pll_code.n_code);
rt1318->pll_in = freq_in;
rt1318->pll_out = freq_out;
rt1318->pll_src = source;
return 0;
}
static int rt1318_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
unsigned int rx_mask, int slots, int slot_width)
{
struct snd_soc_component *component = dai->component;
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
unsigned int cn = 0, cl = 0, rx_slotnum;
int ret = 0, first_bit;
switch (slots) {
case 4:
cn |= RT1318_I2S_CH_TX_4CH;
cn |= RT1318_I2S_CH_RX_4CH;
break;
case 6:
cn |= RT1318_I2S_CH_TX_6CH;
cn |= RT1318_I2S_CH_RX_6CH;
break;
case 8:
cn |= RT1318_I2S_CH_TX_8CH;
cn |= RT1318_I2S_CH_RX_8CH;
break;
case 2:
break;
default:
return -EINVAL;
}
switch (slot_width) {
case 20:
cl |= RT1318_I2S_TX_CHL_20;
cl |= RT1318_I2S_RX_CHL_20;
break;
case 24:
cl |= RT1318_I2S_TX_CHL_24;
cl |= RT1318_I2S_RX_CHL_24;
break;
case 32:
cl |= RT1318_I2S_TX_CHL_32;
cl |= RT1318_I2S_RX_CHL_32;
break;
case 8:
cl |= RT1318_I2S_TX_CHL_8;
cl |= RT1318_I2S_RX_CHL_8;
break;
case 16:
break;
default:
return -EINVAL;
}
/* Rx slot configuration */
rx_slotnum = hweight_long(rx_mask);
if (rx_slotnum != 1) {
ret = -EINVAL;
dev_err(component->dev, "too many rx slots or zero slot\n");
goto _set_tdm_err_;
}
first_bit = __ffs(rx_mask);
switch (first_bit) {
case 0:
case 2:
case 4:
case 6:
regmap_update_bits(rt1318->regmap,
RT1318_TDM_CTRL9,
RT1318_TDM_I2S_TX_L_DAC1_1_MASK |
RT1318_TDM_I2S_TX_R_DAC1_1_MASK,
(first_bit << RT1318_TDM_I2S_TX_L_DAC1_1_SFT) |
((first_bit + 1) << RT1318_TDM_I2S_TX_R_DAC1_1_SFT));
break;
case 1:
case 3:
case 5:
case 7:
regmap_update_bits(rt1318->regmap,
RT1318_TDM_CTRL9,
RT1318_TDM_I2S_TX_L_DAC1_1_MASK |
RT1318_TDM_I2S_TX_R_DAC1_1_MASK,
((first_bit - 1) << RT1318_TDM_I2S_TX_L_DAC1_1_SFT) |
(first_bit << RT1318_TDM_I2S_TX_R_DAC1_1_SFT));
break;
default:
ret = -EINVAL;
goto _set_tdm_err_;
}
regmap_update_bits(rt1318->regmap, RT1318_TDM_CTRL2,
RT1318_I2S_CH_TX_MASK | RT1318_I2S_CH_RX_MASK, cn);
regmap_update_bits(rt1318->regmap, RT1318_TDM_CTRL3,
RT1318_I2S_TX_CHL_MASK | RT1318_I2S_RX_CHL_MASK, cl);
_set_tdm_err_:
return ret;
}
static int rt1318_probe(struct snd_soc_component *component)
{
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
rt1318->component = component;
schedule_work(&rt1318->cali_work);
rt1318->rt1318_dvol = RT1318_DVOL_STEP;
return 0;
}
static void rt1318_remove(struct snd_soc_component *component)
{
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
cancel_work_sync(&rt1318->cali_work);
}
#ifdef CONFIG_PM
static int rt1318_suspend(struct snd_soc_component *component)
{
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
regcache_cache_only(rt1318->regmap, true);
regcache_mark_dirty(rt1318->regmap);
return 0;
}
static int rt1318_resume(struct snd_soc_component *component)
{
struct rt1318_priv *rt1318 = snd_soc_component_get_drvdata(component);
regcache_cache_only(rt1318->regmap, false);
regcache_sync(rt1318->regmap);
return 0;
}
#else
#define rt1318_suspend NULL
#define rt1318_resume NULL
#endif
#define RT1318_STEREO_RATES SNDRV_PCM_RATE_8000_192000
#define RT1318_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
static const struct snd_soc_dai_ops rt1318_aif_dai_ops = {
.hw_params = rt1318_hw_params,
.set_fmt = rt1318_set_dai_fmt,
.set_sysclk = rt1318_set_dai_sysclk,
.set_pll = rt1318_set_dai_pll,
.set_tdm_slot = rt1318_set_tdm_slot,
};
static struct snd_soc_dai_driver rt1318_dai[] = {
{
.name = "rt1318-aif",
.id = 0,
.playback = {
.stream_name = "AIF1 Playback",
.channels_min = 1,
.channels_max = 2,
.rates = RT1318_STEREO_RATES,
.formats = RT1318_FORMATS,
},
.ops = &rt1318_aif_dai_ops,
}
};
static const struct snd_soc_component_driver soc_component_dev_rt1318 = {
.probe = rt1318_probe,
.remove = rt1318_remove,
.suspend = rt1318_suspend,
.resume = rt1318_resume,
.controls = rt1318_snd_controls,
.num_controls = ARRAY_SIZE(rt1318_snd_controls),
.dapm_widgets = rt1318_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(rt1318_dapm_widgets),
.dapm_routes = rt1318_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(rt1318_dapm_routes),
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct regmap_config rt1318_regmap = {
.reg_bits = 32,
.val_bits = 8,
.readable_reg = rt1318_readable_register,
.volatile_reg = rt1318_volatile_register,
.max_register = 0x41001888,
.reg_defaults = rt1318_reg,
.num_reg_defaults = ARRAY_SIZE(rt1318_reg),
.cache_type = REGCACHE_RBTREE,
.use_single_read = true,
.use_single_write = true,
};
static const struct i2c_device_id rt1318_i2c_id[] = {
{ "rt1318" },
{ }
};
MODULE_DEVICE_TABLE(i2c, rt1318_i2c_id);
static const struct of_device_id rt1318_of_match[] = {
{ .compatible = "realtek,rt1318", },
{},
};
MODULE_DEVICE_TABLE(of, rt1318_of_match);
#ifdef CONFIG_ACPI
static const struct acpi_device_id rt1318_acpi_match[] = {
{ "10EC1318", 0},
{ },
};
MODULE_DEVICE_TABLE(acpi, rt1318_acpi_match);
#endif
static int rt1318_parse_dt(struct rt1318_priv *rt1318, struct device *dev)
{
device_property_read_u32(dev, "realtek,r0_l",
&rt1318->pdata.init_r0_l);
device_property_read_u32(dev, "realtek,r0_r",
&rt1318->pdata.init_r0_r);
return 0;
}
static void rt1318_calibration_sequence(struct rt1318_priv *rt1318)
{
regmap_write(rt1318->regmap, RT1318_CLK1, 0x22);
regmap_write(rt1318->regmap, RT1318_PLL1_N_7_0, 0x06);
regmap_write(rt1318->regmap, RT1318_STP_TEMP_L, 0xCC);
regmap_write(rt1318->regmap, RT1318_STP_SEL_L, 0x40);
regmap_write(rt1318->regmap, RT1318_STP_SEL_R, 0x40);
regmap_write(rt1318->regmap, RT1318_SINE_GEN0, 0x20);
regmap_write(rt1318->regmap, RT1318_SPK_VOL_TH, 0x00);
regmap_write(rt1318->regmap, RT1318_FEEDBACK_PATH, 0x0B);
regmap_write(rt1318->regmap, RT1318_TCON, 0x1C);
regmap_write(rt1318->regmap, RT1318_TCON_RELATE, 0x58);
regmap_write(rt1318->regmap, RT1318_TCON_RELATE, 0x78);
regmap_write(rt1318->regmap, RT1318_STP_R0_EN_L, 0xC2);
}
static void rt1318_r0_calculate(struct rt1318_priv *rt1318)
{
unsigned int r0_l, r0_l_byte0, r0_l_byte1, r0_l_byte2, r0_l_byte3;
unsigned int r0_r, r0_r_byte0, r0_r_byte1, r0_r_byte2, r0_r_byte3;
unsigned int r0_l_integer, r0_l_factor, r0_r_integer, r0_r_factor;
unsigned int format = 16777216; /* 2^24 */
regmap_read(rt1318->regmap, RT1318_R0_L_24, &r0_l_byte0);
regmap_read(rt1318->regmap, RT1318_R0_L_23_16, &r0_l_byte1);
regmap_read(rt1318->regmap, RT1318_R0_L_15_8, &r0_l_byte2);
regmap_read(rt1318->regmap, RT1318_R0_L_7_0, &r0_l_byte3);
r0_l = r0_l_byte0 << 24 | r0_l_byte1 << 16 | r0_l_byte2 << 8 | r0_l_byte3;
r0_l_integer = format / r0_l;
r0_l_factor = (format * 10) / r0_l - r0_l_integer * 10;
regmap_read(rt1318->regmap, RT1318_R0_R_24, &r0_r_byte0);
regmap_read(rt1318->regmap, RT1318_R0_R_23_16, &r0_r_byte1);
regmap_read(rt1318->regmap, RT1318_R0_R_15_8, &r0_r_byte2);
regmap_read(rt1318->regmap, RT1318_R0_R_7_0, &r0_r_byte3);
r0_r = r0_r_byte0 << 24 | r0_r_byte1 << 16 | r0_r_byte2 << 8 | r0_r_byte3;
r0_r_integer = format / r0_r;
r0_r_factor = (format * 10) / r0_r - r0_r_integer * 10;
dev_dbg(rt1318->component->dev, "r0_l_ch:%d.%d ohm\n", r0_l_integer, r0_l_factor);
dev_dbg(rt1318->component->dev, "r0_r_ch:%d.%d ohm\n", r0_r_integer, r0_r_factor);
}
static void rt1318_r0_restore(struct rt1318_priv *rt1318)
{
regmap_write(rt1318->regmap, RT1318_PRE_R0_L_24,
(rt1318->pdata.init_r0_l >> 24) & 0xff);
regmap_write(rt1318->regmap, RT1318_PRE_R0_L_23_16,
(rt1318->pdata.init_r0_l >> 16) & 0xff);
regmap_write(rt1318->regmap, RT1318_PRE_R0_L_15_8,
(rt1318->pdata.init_r0_l >> 8) & 0xff);
regmap_write(rt1318->regmap, RT1318_PRE_R0_L_7_0,
(rt1318->pdata.init_r0_l >> 0) & 0xff);
regmap_write(rt1318->regmap, RT1318_PRE_R0_R_24,
(rt1318->pdata.init_r0_r >> 24) & 0xff);
regmap_write(rt1318->regmap, RT1318_PRE_R0_R_23_16,
(rt1318->pdata.init_r0_r >> 16) & 0xff);
regmap_write(rt1318->regmap, RT1318_PRE_R0_R_15_8,
(rt1318->pdata.init_r0_r >> 8) & 0xff);
regmap_write(rt1318->regmap, RT1318_PRE_R0_R_7_0,
(rt1318->pdata.init_r0_r >> 0) & 0xff);
regmap_write(rt1318->regmap, RT1318_STP_SEL_L, 0x80);
regmap_write(rt1318->regmap, RT1318_STP_SEL_R, 0x80);
regmap_write(rt1318->regmap, RT1318_R0_CMP_L_FLAG, 0xc0);
regmap_write(rt1318->regmap, RT1318_R0_CMP_R_FLAG, 0xc0);
regmap_write(rt1318->regmap, RT1318_STP_R0_EN_L, 0xc0);
regmap_write(rt1318->regmap, RT1318_STP_R0_EN_R, 0xc0);
regmap_write(rt1318->regmap, RT1318_STP_TEMP_L, 0xcc);
regmap_write(rt1318->regmap, RT1318_TCON, 0x9c);
}
static int rt1318_calibrate(struct rt1318_priv *rt1318)
{
int chk_cnt = 30, count = 0;
int val, val2;
regmap_write(rt1318->regmap, RT1318_PWR_STA1, 0x1);
usleep_range(0, 10000);
rt1318_calibration_sequence(rt1318);
while (count < chk_cnt) {
msleep(100);
regmap_read(rt1318->regmap, RT1318_R0_CMP_L_FLAG, &val);
regmap_read(rt1318->regmap, RT1318_R0_CMP_R_FLAG, &val2);
val = (val >> 1) & 0x1;
val2 = (val2 >> 1) & 0x1;
if (val & val2) {
dev_dbg(rt1318->component->dev, "Calibration done.\n");
break;
}
count++;
if (count == chk_cnt) {
regmap_write(rt1318->regmap, RT1318_PWR_STA1, 0x0);
return RT1318_R0_CALIB_NOT_DONE;
}
}
regmap_write(rt1318->regmap, RT1318_PWR_STA1, 0x0);
regmap_read(rt1318->regmap, RT1318_R0_CMP_L_FLAG, &val);
regmap_read(rt1318->regmap, RT1318_R0_CMP_R_FLAG, &val2);
if ((val & 0x1) & (val2 & 0x1))
return RT1318_R0_IN_RANGE;
else
return RT1318_R0_OUT_OF_RANGE;
}
static void rt1318_calibration_work(struct work_struct *work)
{
struct rt1318_priv *rt1318 =
container_of(work, struct rt1318_priv, cali_work);
int ret;
if (rt1318->pdata.init_r0_l && rt1318->pdata.init_r0_r)
rt1318_r0_restore(rt1318);
else {
ret = rt1318_calibrate(rt1318);
if (ret == RT1318_R0_IN_RANGE)
rt1318_r0_calculate(rt1318);
dev_dbg(rt1318->component->dev, "Calibrate R0 result:%d\n", ret);
}
}
static int rt1318_i2c_probe(struct i2c_client *i2c)
{
struct rt1318_platform_data *pdata = dev_get_platdata(&i2c->dev);
struct rt1318_priv *rt1318;
int ret, val, val2, dev_id;
rt1318 = devm_kzalloc(&i2c->dev, sizeof(struct rt1318_priv),
GFP_KERNEL);
if (!rt1318)
return -ENOMEM;
i2c_set_clientdata(i2c, rt1318);
if (pdata)
rt1318->pdata = *pdata;
else
rt1318_parse_dt(rt1318, &i2c->dev);
rt1318->regmap = devm_regmap_init_i2c(i2c, &rt1318_regmap);
if (IS_ERR(rt1318->regmap)) {
ret = PTR_ERR(rt1318->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
regmap_read(rt1318->regmap, RT1318_DEV_ID1, &val);
regmap_read(rt1318->regmap, RT1318_DEV_ID2, &val2);
dev_id = (val << 8) | val2;
if (dev_id != 0x6821) {
dev_err(&i2c->dev,
"Device with ID register %#x is not rt1318\n",
dev_id);
return -ENODEV;
}
ret = regmap_register_patch(rt1318->regmap, init_list,
ARRAY_SIZE(init_list));
if (ret != 0)
dev_warn(&i2c->dev, "Failed to apply regmap patch: %d\n", ret);
INIT_WORK(&rt1318->cali_work, rt1318_calibration_work);
return devm_snd_soc_register_component(&i2c->dev,
&soc_component_dev_rt1318, rt1318_dai, ARRAY_SIZE(rt1318_dai));
}
static struct i2c_driver rt1318_i2c_driver = {
.driver = {
.name = "rt1318",
.of_match_table = of_match_ptr(rt1318_of_match),
.acpi_match_table = ACPI_PTR(rt1318_acpi_match),
},
.probe = rt1318_i2c_probe,
.id_table = rt1318_i2c_id,
};
module_i2c_driver(rt1318_i2c_driver);
MODULE_DESCRIPTION("ASoC RT1318 driver");
MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
MODULE_LICENSE("GPL");
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