772 lines
18 KiB
C
772 lines
18 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 Awinic Inc.
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*/
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#include <linux/module.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/interrupt.h>
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#include <linux/delay.h>
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#include <linux/irq.h>
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#include <linux/firmware.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/fs.h>
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#include <linux/proc_fs.h>
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#include <linux/uaccess.h>
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#include <linux/io.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/gameport.h>
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#include <linux/moduleparam.h>
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#include <linux/mutex.h>
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/*(LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) */
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#include <linux/device.h>
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#include <linux/pm_wakeup.h>
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#include <linux/timer.h>
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#include <linux/workqueue.h>
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#include <linux/hrtimer.h>
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#include <linux/aw87519_audio.h>
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/*******************************************************************************
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* aw87519 marco
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******************************************************************************/
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#define AW87519_RIGHT_I2C_NAME "AW87519_RIGHT_PA"
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#define AW87519_RIGHT_DRIVER_VERSION "v1.0.1"
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static unsigned char aw87519_spk_cfg_default[] = {
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0x01, 0xF0,
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0x02, 0x09,
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0x03, 0xE8,
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0x04, 0x11,
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0x05, 0x10,
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0x06, 0x43,
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0x07, 0x4E,
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0x08, 0x03,
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0x09, 0x08,
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0x0A, 0x4A,
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0x60, 0x16,
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0x61, 0x20,
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0x62, 0x01,
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0x63, 0x0B,
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0x64, 0xC5,
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0x65, 0xA4,
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0x66, 0x78,
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0x67, 0xC4,
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0x68, 0XD0
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};
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static unsigned char aw87519_rcv_cfg_default[] = {
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0x01, 0xF8,
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0x02, 0x09,
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0x03, 0xC8,
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0x04, 0x11,
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0x05, 0x05,
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0x06, 0x53,
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0x07, 0x4E,
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0x08, 0x0B,
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0x09, 0x08,
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0x0A, 0x4B,
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0x60, 0x16,
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0x61, 0x20,
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0x62, 0x01,
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0x63, 0x0B,
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0x64, 0xC5,
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0x65, 0xA4,
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0x66, 0x78,
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0x67, 0xC4,
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0x68, 0XD0
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};
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struct aw87519_container {
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int len;
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unsigned char data[];
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};
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struct aw87519 {
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struct i2c_client *i2c_client;
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int reset_gpio;
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unsigned char hwen_flag;
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unsigned char spk_cfg_update_flag;
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unsigned char rcv_cfg_update_flag;
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unsigned char spk_cfg_data[sizeof(aw87519_spk_cfg_default) /
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sizeof(char)];
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unsigned char rcv_cfg_data[sizeof(aw87519_rcv_cfg_default) /
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sizeof(char)];
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struct hrtimer cfg_timer;
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struct mutex cfg_lock;
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struct work_struct cfg_work;
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struct delayed_work ram_work;
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};
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/*******************************************************************************
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* aw87519 variable
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******************************************************************************/
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static struct aw87519 *aw87519;
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static struct aw87519_container *aw87519_spk_cnt;
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static struct aw87519_container *aw87519_rcv_cnt;
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static char *aw87519_spk_name = "aw87519_right_spk.bin";
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static char *aw87519_rcv_name = "aw87519_right_rcv.bin";
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/*******************************************************************************
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* i2c write and read
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******************************************************************************/
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static int aw87519_i2c_write(struct aw87519 *aw87519,
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unsigned char reg_addr, unsigned char reg_data)
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{
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int ret = -1;
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unsigned char cnt = 0;
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while (cnt < AW_I2C_RETRIES) {
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ret = i2c_smbus_write_byte_data(aw87519->i2c_client,
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reg_addr,
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reg_data);
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if (ret < 0)
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pr_err("%s: i2c_write cnt=%d error=%d\n",
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__func__, cnt, ret);
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else
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break;
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cnt++;
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msleep(AW_I2C_RETRY_DELAY);
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}
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return ret;
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}
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static int aw87519_i2c_read(struct aw87519 *aw87519,
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unsigned char reg_addr, unsigned char *reg_data)
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{
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int ret = -1;
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unsigned char cnt = 0;
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while (cnt < AW_I2C_RETRIES) {
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ret = i2c_smbus_read_byte_data(aw87519->i2c_client, reg_addr);
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if (ret < 0) {
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pr_err("%s: i2c_read cnt=%d error=%d\n",
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__func__, cnt, ret);
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} else {
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*reg_data = ret;
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break;
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}
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cnt++;
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msleep(AW_I2C_RETRY_DELAY);
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}
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return ret;
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}
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/*******************************************************************************
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* aw87519 hardware control
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******************************************************************************/
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static unsigned int aw87519_hw_on(struct aw87519 *aw87519)
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{
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pr_info("%s right enter\n", __func__);
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if (aw87519 && gpio_is_valid(aw87519->reset_gpio)) {
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gpio_set_value_cansleep(aw87519->reset_gpio, 0);
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usleep_range(2000, 2500);
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gpio_set_value_cansleep(aw87519->reset_gpio, 1);
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usleep_range(2000, 2500);
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aw87519->hwen_flag = 1;
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aw87519_i2c_write(aw87519, 0x64, 0x2C);
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} else {
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dev_err(&aw87519->i2c_client->dev, "%s: failed\n", __func__);
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}
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return 0;
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}
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static unsigned int aw87519_hw_off(struct aw87519 *aw87519)
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{
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pr_info("%s enter\n", __func__);
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if (aw87519 && gpio_is_valid(aw87519->reset_gpio)) {
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gpio_set_value_cansleep(aw87519->reset_gpio, 0);
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usleep_range(2000, 2500);
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aw87519->hwen_flag = 0;
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} else {
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dev_err(&aw87519->i2c_client->dev, "%s: failed\n", __func__);
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}
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return 0;
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}
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/*******************************************************************************
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* aw87519 control interface
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******************************************************************************/
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unsigned char aw87519_right_audio_receiver(void)
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{
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unsigned int i;
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unsigned int length;
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if (aw87519 == NULL)
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return 2;
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if (!aw87519->hwen_flag)
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aw87519_hw_on(aw87519);
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aw87519_i2c_write(aw87519, 0x69, 0x80);
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aw87519_i2c_write(aw87519, 0x69, 0xB7);
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length = sizeof(aw87519_spk_cfg_default) / sizeof(char);
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if (aw87519->rcv_cfg_update_flag == 0) { /*update array data */
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for (i = 0; i < length; i = i + 2) {
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aw87519_i2c_write(aw87519, aw87519_rcv_cfg_default[i],
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aw87519_rcv_cfg_default[i + 1]);
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}
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}
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if (aw87519->rcv_cfg_update_flag == 1) { /*update bin data */
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for (i = 0; i < length; i = i + 2) {
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aw87519_i2c_write(aw87519, aw87519->rcv_cfg_data[i],
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aw87519->rcv_cfg_data[i + 1]);
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}
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}
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return 0;
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}
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unsigned char aw87519_amp_rch_on(void)
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{
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unsigned int i;
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unsigned int length;
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pr_info("%s enter\n", __func__);
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if (aw87519 == NULL)
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return 2;
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if (!aw87519->hwen_flag)
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aw87519_hw_on(aw87519);
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aw87519_i2c_write(aw87519, 0x69, 0x80);
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aw87519_i2c_write(aw87519, 0x69, 0xB7);
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length = sizeof(aw87519_spk_cfg_default) / sizeof(char);
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if (aw87519->spk_cfg_update_flag == 0) { /*send array data */
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for (i = 0; i < length; i = i + 2) {
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aw87519_i2c_write(aw87519, aw87519_spk_cfg_default[i],
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aw87519_spk_cfg_default[i + 1]);
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}
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}
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if (aw87519->spk_cfg_update_flag == 1) { /*send bin data */
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for (i = 0; i < length; i = i + 2) {
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aw87519_i2c_write(aw87519, aw87519->spk_cfg_data[i],
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aw87519->spk_cfg_data[i + 1]);
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}
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}
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return 0;
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}
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unsigned char aw87519_amp_rch_off(void)
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{
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pr_info("%s enter\n", __func__);
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if (aw87519 == NULL)
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return 2;
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if (aw87519->hwen_flag)
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aw87519_i2c_write(aw87519, 0x01, 0x00); /*CHIP Disable*/
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aw87519_hw_off(aw87519);
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return 0;
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}
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/*******************************************************************************
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* aw87519 firmware cfg update
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******************************************************************************/
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static void
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aw87519_receiver_cfg_loaded(const struct firmware *cont, void *context)
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{
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int i = 0;
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pr_info("%s enter\n", __func__);
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if (!cont) {
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pr_err("%s: failed to read %s\n", __func__, aw87519_rcv_name);
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release_firmware(cont);
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return;
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}
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pr_info("%s: loaded %s - size: %zu\n",
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__func__, aw87519_rcv_name, cont ? cont->size : 0);
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for (i = 0; i < cont->size; i++)
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pr_info("%s: addr:0x%04x, data:0x%02x\n",
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__func__, i, *(cont->data + i));
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/* aw87519 ram update */
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aw87519_rcv_cnt = kzalloc(cont->size + sizeof(int), GFP_KERNEL);
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if (!aw87519_rcv_cnt) {
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release_firmware(cont);
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pr_err("%s: Error allocating memory\n", __func__);
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return;
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}
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aw87519_rcv_cnt->len = cont->size;
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for (i = 0; i < aw87519_rcv_cnt->len; i++)
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aw87519->rcv_cfg_data[i] = *(cont->data + i);
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release_firmware(cont);
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kfree(aw87519_rcv_cnt);
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pr_info("%s: fw update complete\n", __func__);
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}
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static int aw87519_rcv_update(struct aw87519 *aw87519)
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{
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pr_info("%s enter\n", __func__);
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return request_firmware_nowait(THIS_MODULE,
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FW_ACTION_HOTPLUG,
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aw87519_rcv_name,
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&aw87519->i2c_client->dev,
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GFP_KERNEL,
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aw87519,
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aw87519_receiver_cfg_loaded);
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}
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static void
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aw87519_speaker_cfg_loaded(const struct firmware *cont, void *context)
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{
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int i = 0;
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pr_info("%s enter\n", __func__);
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if (!cont) {
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pr_err("%s: failed to read %s\n", __func__, aw87519_spk_name);
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release_firmware(cont);
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return;
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}
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pr_info("%s: loaded %s - size: %zu\n",
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__func__, aw87519_spk_name, cont ? cont->size : 0);
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for (i = 0; i < cont->size; i++)
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pr_info("%s: addr:0x%04x, data:0x%02x\n",
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__func__, i, *(cont->data + i));
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/* aw87519 ram update */
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aw87519_spk_cnt = kzalloc(cont->size + sizeof(int), GFP_KERNEL);
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if (!aw87519_spk_cnt) {
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release_firmware(cont);
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pr_err("%s: Error allocating memory\n", __func__);
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return;
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}
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aw87519_spk_cnt->len = cont->size;
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for (i = 0; i < aw87519_spk_cnt->len; i++)
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aw87519->spk_cfg_data[i] = *(cont->data + i);
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release_firmware(cont);
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kfree(aw87519_spk_cnt);
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pr_info("%s: fw update complete\n", __func__);
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aw87519_rcv_update(aw87519);
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}
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#ifdef AWINIC_CFG_UPDATE_DELAY
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static int aw87519_cfg_update(struct aw87519 *aw87519)
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{
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pr_info("%s enter\n", __func__);
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return request_firmware_nowait(THIS_MODULE,
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FW_ACTION_HOTPLUG,
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aw87519_spk_name,
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&aw87519->i2c_client->dev,
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GFP_KERNEL,
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aw87519,
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aw87519_speaker_cfg_loaded);
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}
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static void aw87519_cfg_work_routine(struct work_struct *work)
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{
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pr_info("%s enter\n", __func__);
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aw87519_cfg_update(aw87519);
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}
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#endif
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static int aw87519_cfg_init(struct aw87519 *aw87519)
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{
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int ret = -1;
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#ifdef AWINIC_CFG_UPDATE_DELAY
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int cfg_timer_val = 5000;
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INIT_DELAYED_WORK(&aw87519->ram_work, aw87519_cfg_work_routine);
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schedule_delayed_work(&aw87519->ram_work,
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msecs_to_jiffies(cfg_timer_val));
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ret = 0;
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#endif
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return ret;
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}
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/*******************************************************************************
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* aw87519 attribute
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******************************************************************************/
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static ssize_t aw87519_get_reg(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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ssize_t len = 0;
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unsigned int i = 0;
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unsigned char reg_val = 0;
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for (i = 0; i < AW87519_REG_MAX; i++) {
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aw87519_i2c_read(aw87519, i, ®_val);
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len += snprintf(buf + len, PAGE_SIZE - len,
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"reg:0x%02x=0x%02x\n", i, reg_val);
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}
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return len;
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}
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static ssize_t aw87519_set_reg(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t len)
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{
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unsigned int databuf[2] = { 0, 0 };
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if (sscanf(buf, "%x %x", &databuf[0], &databuf[1]) == 2)
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aw87519_i2c_write(aw87519, databuf[0], databuf[1]);
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return len;
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}
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static ssize_t aw87519_get_hwen(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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ssize_t len = 0;
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len += snprintf(buf + len, PAGE_SIZE - len, "hwen: %d\n",
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aw87519->hwen_flag);
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return len;
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}
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static ssize_t aw87519_set_hwen(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t len)
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{
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int databuf;
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int ret = 0;
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ret = kstrtoint(buf, 10, &databuf);
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if (ret != 0) {
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pr_err("Incorrect argument\n");
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return len;
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}
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if (databuf == 0)
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aw87519_hw_off(aw87519);
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else
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aw87519_hw_on(aw87519);
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return len;
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}
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static ssize_t aw87519_get_update(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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ssize_t len = 0;
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return len;
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}
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static ssize_t aw87519_set_update(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t len)
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{
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int databuf;
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int ret;
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ret = kstrtoint(buf, 10, &databuf);
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if (ret != 0) {
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pr_err("Incorrect argument\n");
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return len;
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}
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if (databuf == 0) {
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} else {
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aw87519->spk_cfg_update_flag = 1;
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aw87519->rcv_cfg_update_flag = 1;
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ret = request_firmware_nowait(THIS_MODULE,
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FW_ACTION_HOTPLUG,
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aw87519_spk_name,
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&aw87519->i2c_client->dev,
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GFP_KERNEL,
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aw87519,
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aw87519_speaker_cfg_loaded);
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if (ret) {
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pr_err("%s: request firmware failed with read %s",
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__func__, aw87519_spk_name);
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}
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}
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return len;
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}
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static ssize_t aw87519_get_mode(struct device *cd,
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struct device_attribute *attr, char *buf)
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{
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ssize_t len = 0;
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len += snprintf(buf + len, PAGE_SIZE - len, "0: off mode\n");
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len += snprintf(buf + len, PAGE_SIZE - len, "1: spk mode\n");
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len += snprintf(buf + len, PAGE_SIZE - len, "2: rcv mode\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t aw87519_set_mode(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t len)
|
|
{
|
|
int databuf;
|
|
int ret = 0;
|
|
|
|
ret = kstrtoint(buf, 10, &databuf);
|
|
if (ret != 0) {
|
|
pr_err("Incorrect argument\n");
|
|
return len;
|
|
}
|
|
if (databuf == 0)
|
|
aw87519_amp_rch_off();
|
|
else if (databuf == 1)
|
|
aw87519_amp_rch_on();
|
|
else if (databuf == 2)
|
|
aw87519_right_audio_receiver();
|
|
else
|
|
aw87519_amp_rch_off();
|
|
|
|
return len;
|
|
}
|
|
|
|
static DEVICE_ATTR(reg, AW87519_VAL, aw87519_get_reg, aw87519_set_reg);
|
|
static DEVICE_ATTR(hwen, AW87519_VAL, aw87519_get_hwen, aw87519_set_hwen);
|
|
static DEVICE_ATTR(update, AW87519_VAL, aw87519_get_update, aw87519_set_update);
|
|
static DEVICE_ATTR(mode, AW87519_VAL, aw87519_get_mode, aw87519_set_mode);
|
|
|
|
static struct attribute *aw87519_attributes[] = {
|
|
&dev_attr_reg.attr,
|
|
&dev_attr_hwen.attr,
|
|
&dev_attr_update.attr,
|
|
&dev_attr_mode.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group aw87519_attribute_group = {
|
|
.attrs = aw87519_attributes
|
|
};
|
|
|
|
/*****************************************************
|
|
* device tree
|
|
*****************************************************/
|
|
static int aw87519_parse_dt(struct device *dev, struct device_node *np)
|
|
{
|
|
pr_info("%s enter\n", __func__);
|
|
|
|
aw87519->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0);
|
|
if (aw87519->reset_gpio >= 0) {
|
|
dev_info(dev, "%s: reset gpio provided ok\n", __func__);
|
|
} else {
|
|
dev_err(dev, "%s: reset gpio provided failed.\n", __func__);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int aw87519_hw_reset(struct aw87519 *aw87519)
|
|
{
|
|
pr_info("%s enter\n", __func__);
|
|
|
|
if (aw87519 && gpio_is_valid(aw87519->reset_gpio)) {
|
|
gpio_set_value_cansleep(aw87519->reset_gpio, 0);
|
|
usleep_range(2000, 2500);
|
|
gpio_set_value_cansleep(aw87519->reset_gpio, 1);
|
|
usleep_range(2000, 2500);
|
|
aw87519->hwen_flag = 1;
|
|
} else {
|
|
aw87519->hwen_flag = 0;
|
|
dev_err(&aw87519->i2c_client->dev, "%s: failed\n", __func__);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************
|
|
* check chip id
|
|
*****************************************************/
|
|
static int aw87519_read_chipid(struct aw87519 *aw87519)
|
|
{
|
|
unsigned int cnt = 0;
|
|
int ret = -1;
|
|
unsigned char reg_val = 0;
|
|
|
|
while (cnt < AW_READ_CHIPID_RETRIES) {
|
|
aw87519_i2c_write(aw87519, 0x64, 0x2C);
|
|
ret = aw87519_i2c_read(aw87519, REG_CHIPID, ®_val);
|
|
if (reg_val != AW87519_CHIPID)
|
|
pr_info("%s: aw87519 chipid=0x%x error\n",
|
|
__func__, reg_val);
|
|
else {
|
|
pr_info("%s This Chip is AW87519 chipid=0x%x\n",
|
|
__func__, reg_val);
|
|
return 0;
|
|
}
|
|
cnt++;
|
|
msleep(AW_READ_CHIPID_RETRY_DELAY);
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* aw87519 i2c driver
|
|
******************************************************************************/
|
|
static int
|
|
aw87519_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id)
|
|
{
|
|
struct device_node *np = client->dev.of_node;
|
|
int ret = -1;
|
|
|
|
pr_info("%s right Enter\n", __func__);
|
|
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
|
|
dev_err(&client->dev, "%s: check_functionality failed\n",
|
|
__func__);
|
|
ret = -ENODEV;
|
|
goto exit_check_functionality_failed;
|
|
}
|
|
|
|
aw87519 = devm_kzalloc(&client->dev, sizeof(struct aw87519),
|
|
GFP_KERNEL);
|
|
if (aw87519 == NULL) {
|
|
ret = -ENOMEM;
|
|
goto exit_devm_kzalloc_failed;
|
|
}
|
|
|
|
aw87519->i2c_client = client;
|
|
i2c_set_clientdata(client, aw87519);
|
|
|
|
/* aw87519 rst */
|
|
if (np) {
|
|
ret = aw87519_parse_dt(&client->dev, np);
|
|
if (ret) {
|
|
dev_err(&client->dev,
|
|
"%s: failed to parse device tree node\n",
|
|
__func__);
|
|
goto exit_gpio_get_failed;
|
|
}
|
|
} else {
|
|
aw87519->reset_gpio = -1;
|
|
}
|
|
|
|
if (gpio_is_valid(aw87519->reset_gpio)) {
|
|
ret = devm_gpio_request_one(&client->dev, aw87519->reset_gpio,
|
|
GPIOF_OUT_INIT_LOW, "aw87519_rst");
|
|
if (ret) {
|
|
dev_err(&client->dev, "%s: rst request failed\n",
|
|
__func__);
|
|
goto exit_gpio_request_failed;
|
|
}
|
|
}
|
|
|
|
/* hardware reset */
|
|
aw87519_hw_reset(aw87519);
|
|
|
|
/* aw87519 chip id */
|
|
ret = aw87519_read_chipid(aw87519);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "%s: aw87519_read_chipid failed ret=%d\n",
|
|
__func__, ret);
|
|
goto exit_i2c_check_id_failed;
|
|
}
|
|
|
|
ret = sysfs_create_group(&client->dev.kobj, &aw87519_attribute_group);
|
|
if (ret < 0)
|
|
dev_info(&client->dev, "%s error creating sysfs attr files\n",
|
|
__func__);
|
|
|
|
/* aw87519 cfg update */
|
|
aw87519->spk_cfg_update_flag = 0;
|
|
aw87519->rcv_cfg_update_flag = 0;
|
|
aw87519_cfg_init(aw87519);
|
|
|
|
/* aw87519 hardware off */
|
|
aw87519_hw_off(aw87519);
|
|
|
|
return 0;
|
|
|
|
exit_i2c_check_id_failed:
|
|
devm_gpio_free(&client->dev, aw87519->reset_gpio);
|
|
exit_gpio_request_failed:
|
|
exit_gpio_get_failed:
|
|
devm_kfree(&client->dev, aw87519);
|
|
aw87519 = NULL;
|
|
exit_devm_kzalloc_failed:
|
|
exit_check_functionality_failed:
|
|
return ret;
|
|
}
|
|
|
|
static int aw87519_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct aw87519 *aw87519 = i2c_get_clientdata(client);
|
|
|
|
if (gpio_is_valid(aw87519->reset_gpio))
|
|
devm_gpio_free(&client->dev, aw87519->reset_gpio);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id aw87519_i2c_id[] = {
|
|
{AW87519_RIGHT_I2C_NAME, 0},
|
|
{}
|
|
};
|
|
|
|
static const struct of_device_id extpa_of_match[] = {
|
|
{.compatible = "awinic,aw87519_right"},
|
|
{},
|
|
};
|
|
|
|
static struct i2c_driver aw87519_i2c_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = AW87519_RIGHT_I2C_NAME,
|
|
.of_match_table = extpa_of_match,
|
|
},
|
|
.probe = aw87519_i2c_probe,
|
|
.remove = aw87519_i2c_remove,
|
|
.id_table = aw87519_i2c_id,
|
|
};
|
|
|
|
static int __init aw87519_pa_init(void)
|
|
{
|
|
int ret;
|
|
|
|
pr_info("%s: right version: %s\n",
|
|
__func__, AW87519_RIGHT_DRIVER_VERSION);
|
|
|
|
ret = i2c_add_driver(&aw87519_i2c_driver);
|
|
if (ret) {
|
|
pr_info("[%s] Unable to register driver (%d)\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void __exit aw87519_pa_exit(void)
|
|
{
|
|
pr_info("%s enter\n", __func__);
|
|
i2c_del_driver(&aw87519_i2c_driver);
|
|
}
|
|
|
|
module_init(aw87519_pa_init);
|
|
module_exit(aw87519_pa_exit);
|
|
|
|
MODULE_AUTHOR("<zhangzeta@awinic.com.cn>");
|
|
MODULE_DESCRIPTION("AWINIC AW87519 PA driver");
|
|
MODULE_LICENSE("GPL v2");
|