blob: a12d5cad3b2edff5b94fe7b676e1e4d153cbf80b [file] [log] [blame]
/* Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/slab.h>
#include <linux/ratelimit.h>
#include <linux/mfd/core.h>
#include <linux/mfd/wcd9xxx/wcd9xxx-slimslave.h>
#include <linux/mfd/wcd9xxx/core.h>
#include <linux/mfd/wcd9xxx/wcd9xxx-irq.h>
#include <linux/mfd/wcd9xxx/pdata.h>
#include <linux/mfd/wcd9xxx/wcd9xxx_registers.h>
#include <linux/mfd/msm-cdc-pinctrl.h>
#include <linux/mfd/wcd9xxx/wcd9xxx-utils.h>
#include <linux/mfd/msm-cdc-supply.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/debugfs.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include "wcd9xxx-regmap.h"
#define WCD9XXX_REGISTER_START_OFFSET 0x800
#define WCD9XXX_SLIM_RW_MAX_TRIES 3
#define SLIMBUS_PRESENT_TIMEOUT 100
#define MAX_WCD9XXX_DEVICE 4
#define WCD9XXX_I2C_GSBI_SLAVE_ID "3-000d"
#define WCD9XXX_I2C_TOP_SLAVE_ADDR 0x0d
#define WCD9XXX_ANALOG_I2C_SLAVE_ADDR 0x77
#define WCD9XXX_DIGITAL1_I2C_SLAVE_ADDR 0x66
#define WCD9XXX_DIGITAL2_I2C_SLAVE_ADDR 0x55
#define WCD9XXX_I2C_TOP_LEVEL 0
#define WCD9XXX_I2C_ANALOG 1
#define WCD9XXX_I2C_DIGITAL_1 2
#define WCD9XXX_I2C_DIGITAL_2 3
/*
* Number of return values needs to be checked for each
* registration of Slimbus of I2C bus for each codec
*/
#define NUM_WCD9XXX_REG_RET 4
#define SLIM_USR_MC_REPEAT_CHANGE_VALUE 0x0
#define SLIM_REPEAT_WRITE_MAX_SLICE 16
#define REG_BYTES 2
#define VAL_BYTES 1
#define WCD9XXX_PAGE_NUM(reg) (((reg) >> 8) & 0xff)
#define WCD9XXX_PAGE_SIZE 256
struct wcd9xxx_i2c {
struct i2c_client *client;
struct i2c_msg xfer_msg[2];
struct mutex xfer_lock;
int mod_id;
};
static struct regmap_config wcd9xxx_base_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
.can_multi_write = true,
};
static struct regmap_config wcd9xxx_i2c_base_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
.can_multi_write = false,
.use_single_rw = true,
};
static u8 wcd9xxx_pgd_la;
static u8 wcd9xxx_inf_la;
static const int wcd9xxx_cdc_types[] = {
[WCD9XXX] = WCD9XXX,
[WCD9330] = WCD9330,
[WCD9335] = WCD9335,
[WCD934X] = WCD934X,
};
static const struct of_device_id wcd9xxx_of_match[] = {
{ .compatible = "qcom,tasha-i2c-pgd",
.data = (void *)&wcd9xxx_cdc_types[WCD9335]},
{ .compatible = "qcom,wcd9xxx-i2c",
.data = (void *)&wcd9xxx_cdc_types[WCD9330]},
{ }
};
MODULE_DEVICE_TABLE(of, wcd9xxx_of_match);
static int wcd9xxx_slim_device_up(struct slim_device *sldev);
static int wcd9xxx_slim_device_down(struct slim_device *sldev);
struct wcd9xxx_i2c wcd9xxx_modules[MAX_WCD9XXX_DEVICE];
static int wcd9xxx_slim_multi_reg_write(struct wcd9xxx *wcd9xxx,
const void *data, size_t count)
{
unsigned int reg;
struct device *dev;
u8 val[WCD9XXX_PAGE_SIZE];
int ret = 0;
int i = 0;
int n = 0;
unsigned int page_num;
size_t num_regs = (count / (REG_BYTES + VAL_BYTES));
struct wcd9xxx_reg_val *bulk_reg;
u8 *buf;
dev = wcd9xxx->dev;
if (!data) {
dev_err(dev, "%s: data is NULL\n", __func__);
return -EINVAL;
}
if (num_regs == 0)
return -EINVAL;
bulk_reg = kzalloc(num_regs * (sizeof(struct wcd9xxx_reg_val)),
GFP_KERNEL);
if (!bulk_reg)
return -ENOMEM;
buf = (u8 *)data;
reg = *(u16 *)buf;
page_num = WCD9XXX_PAGE_NUM(reg);
for (i = 0, n = 0; n < num_regs; i++, n++) {
reg = *(u16 *)buf;
if (page_num != WCD9XXX_PAGE_NUM(reg)) {
ret = wcd9xxx_slim_bulk_write(wcd9xxx, bulk_reg,
i, false);
page_num = WCD9XXX_PAGE_NUM(reg);
i = 0;
}
buf += REG_BYTES;
val[i] = *buf;
buf += VAL_BYTES;
bulk_reg[i].reg = reg;
bulk_reg[i].buf = &val[i];
bulk_reg[i].bytes = 1;
}
ret = wcd9xxx_slim_bulk_write(wcd9xxx, bulk_reg,
i, false);
if (ret)
dev_err(dev, "%s: error writing bulk regs\n",
__func__);
kfree(bulk_reg);
return ret;
}
/*
* wcd9xxx_interface_reg_read: Read slim interface registers
*
* @wcd9xxx: Pointer to wcd9xxx structure
* @reg: register adderss
*
* Returns register value in success and negative error code in case of failure
*/
int wcd9xxx_interface_reg_read(struct wcd9xxx *wcd9xxx, unsigned short reg)
{
u8 val;
int ret;
mutex_lock(&wcd9xxx->io_lock);
ret = wcd9xxx->read_dev(wcd9xxx, reg, 1, (void *)&val,
true);
if (ret < 0)
dev_err(wcd9xxx->dev, "%s: Codec read 0x%x failed\n",
__func__, reg);
else
dev_dbg(wcd9xxx->dev, "%s: Read 0x%02x from 0x%x\n",
__func__, val, reg);
mutex_unlock(&wcd9xxx->io_lock);
if (ret < 0)
return ret;
else
return val;
}
EXPORT_SYMBOL(wcd9xxx_interface_reg_read);
/*
* wcd9xxx_interface_reg_write: Write slim interface registers
*
* @wcd9xxx: Pointer to wcd9xxx structure
* @reg: register adderss
* @val: value of the register to be written
*
* Returns 0 for success and negative error code in case of failure
*/
int wcd9xxx_interface_reg_write(struct wcd9xxx *wcd9xxx, unsigned short reg,
u8 val)
{
int ret;
mutex_lock(&wcd9xxx->io_lock);
ret = wcd9xxx->write_dev(wcd9xxx, reg, 1, (void *)&val, true);
dev_dbg(wcd9xxx->dev, "%s: Write %02x to 0x%x ret(%d)\n",
__func__, val, reg, ret);
mutex_unlock(&wcd9xxx->io_lock);
return ret;
}
EXPORT_SYMBOL(wcd9xxx_interface_reg_write);
static int wcd9xxx_slim_read_device(struct wcd9xxx *wcd9xxx, unsigned short reg,
int bytes, void *dest, bool interface)
{
int ret;
struct slim_ele_access msg;
int slim_read_tries = WCD9XXX_SLIM_RW_MAX_TRIES;
msg.start_offset = WCD9XXX_REGISTER_START_OFFSET + reg;
msg.num_bytes = bytes;
msg.comp = NULL;
if (!wcd9xxx->dev_up) {
dev_dbg_ratelimited(
wcd9xxx->dev, "%s: No read allowed. dev_up = %lu\n",
__func__, wcd9xxx->dev_up);
return 0;
}
while (1) {
mutex_lock(&wcd9xxx->xfer_lock);
ret = slim_request_val_element(interface ?
wcd9xxx->slim_slave : wcd9xxx->slim,
&msg, dest, bytes);
mutex_unlock(&wcd9xxx->xfer_lock);
if (likely(ret == 0) || (--slim_read_tries == 0))
break;
usleep_range(5000, 5100);
}
if (ret)
dev_err(wcd9xxx->dev, "%s: Error, Codec read failed (%d)\n",
__func__, ret);
return ret;
}
/*
* Interface specifies whether the write is to the interface or general
* registers.
*/
static int wcd9xxx_slim_write_device(struct wcd9xxx *wcd9xxx,
unsigned short reg, int bytes, void *src, bool interface)
{
int ret;
struct slim_ele_access msg;
int slim_write_tries = WCD9XXX_SLIM_RW_MAX_TRIES;
msg.start_offset = WCD9XXX_REGISTER_START_OFFSET + reg;
msg.num_bytes = bytes;
msg.comp = NULL;
if (!wcd9xxx->dev_up) {
dev_dbg_ratelimited(
wcd9xxx->dev, "%s: No write allowed. dev_up = %lu\n",
__func__, wcd9xxx->dev_up);
return 0;
}
while (1) {
mutex_lock(&wcd9xxx->xfer_lock);
ret = slim_change_val_element(interface ?
wcd9xxx->slim_slave : wcd9xxx->slim,
&msg, src, bytes);
mutex_unlock(&wcd9xxx->xfer_lock);
if (likely(ret == 0) || (--slim_write_tries == 0))
break;
usleep_range(5000, 5100);
}
if (ret)
pr_err("%s: Error, Codec write failed (%d)\n", __func__, ret);
return ret;
}
static int wcd9xxx_slim_get_allowed_slice(struct wcd9xxx *wcd9xxx,
int bytes)
{
int allowed_sz = bytes;
if (likely(bytes == SLIM_REPEAT_WRITE_MAX_SLICE))
allowed_sz = 16;
else if (bytes >= 12)
allowed_sz = 12;
else if (bytes >= 8)
allowed_sz = 8;
else if (bytes >= 6)
allowed_sz = 6;
else if (bytes >= 4)
allowed_sz = 4;
else
allowed_sz = bytes;
return allowed_sz;
}
/*
* wcd9xxx_slim_write_repeat: Write the same register with multiple values
* @wcd9xxx: handle to wcd core
* @reg: register to be written
* @bytes: number of bytes to be written to reg
* @src: buffer with data content to be written to reg
* This API will write reg with bytes from src in a single slimbus
* transaction. All values from 1 to 16 are supported by this API.
*/
int wcd9xxx_slim_write_repeat(struct wcd9xxx *wcd9xxx, unsigned short reg,
int bytes, void *src)
{
int ret = 0, bytes_to_write = bytes, bytes_allowed;
struct slim_ele_access slim_msg;
mutex_lock(&wcd9xxx->io_lock);
if (wcd9xxx->type == WCD9335 || wcd9xxx->type == WCD934X) {
ret = wcd9xxx_page_write(wcd9xxx, &reg);
if (ret)
goto done;
}
slim_msg.start_offset = WCD9XXX_REGISTER_START_OFFSET + reg;
slim_msg.comp = NULL;
if (unlikely(bytes > SLIM_REPEAT_WRITE_MAX_SLICE)) {
dev_err(wcd9xxx->dev, "%s: size %d not supported\n",
__func__, bytes);
ret = -EINVAL;
goto done;
}
if (!wcd9xxx->dev_up) {
dev_dbg_ratelimited(
wcd9xxx->dev, "%s: No write allowed. dev_up = %lu\n",
__func__, wcd9xxx->dev_up);
ret = 0;
goto done;
}
while (bytes_to_write > 0) {
bytes_allowed = wcd9xxx_slim_get_allowed_slice(wcd9xxx,
bytes_to_write);
slim_msg.num_bytes = bytes_allowed;
mutex_lock(&wcd9xxx->xfer_lock);
ret = slim_user_msg(wcd9xxx->slim, wcd9xxx->slim->laddr,
SLIM_MSG_MT_DEST_REFERRED_USER,
SLIM_USR_MC_REPEAT_CHANGE_VALUE,
&slim_msg, src, bytes_allowed);
mutex_unlock(&wcd9xxx->xfer_lock);
if (ret) {
dev_err(wcd9xxx->dev, "%s: failed, ret = %d\n",
__func__, ret);
break;
}
bytes_to_write = bytes_to_write - bytes_allowed;
src = ((u8 *)src) + bytes_allowed;
}
done:
mutex_unlock(&wcd9xxx->io_lock);
return ret;
}
EXPORT_SYMBOL(wcd9xxx_slim_write_repeat);
/*
* wcd9xxx_slim_reserve_bw: API to reserve the slimbus bandwidth
* @wcd9xxx: Handle to the wcd9xxx core
* @bw_ops: value of the bandwidth that is requested
* @commit: Flag to indicate if bandwidth change is to be committed
* right away
*/
int wcd9xxx_slim_reserve_bw(struct wcd9xxx *wcd9xxx,
u32 bw_ops, bool commit)
{
if (!wcd9xxx || !wcd9xxx->slim) {
pr_err("%s: Invalid handle to %s\n",
__func__,
(!wcd9xxx) ? "wcd9xxx" : "slim_device");
return -EINVAL;
}
return slim_reservemsg_bw(wcd9xxx->slim, bw_ops, commit);
}
EXPORT_SYMBOL(wcd9xxx_slim_reserve_bw);
/*
* wcd9xxx_slim_bulk_write: API to write multiple registers with one descriptor
* @wcd9xxx: Handle to the wcd9xxx core
* @wcd9xxx_reg_val: structure holding register and values to be written
* @size: Indicates number of messages to be written with one descriptor
* @is_interface: Indicates whether the register is for slim interface or for
* general registers.
* @return: returns 0 if success or error information to the caller in case
* of failure.
*/
int wcd9xxx_slim_bulk_write(struct wcd9xxx *wcd9xxx,
struct wcd9xxx_reg_val *bulk_reg,
unsigned int size, bool is_interface)
{
int ret, i;
struct slim_val_inf *msgs;
unsigned short reg;
if (!bulk_reg || !size || !wcd9xxx) {
pr_err("%s: Invalid parameters\n", __func__);
return -EINVAL;
}
if (!wcd9xxx->dev_up) {
dev_dbg_ratelimited(
wcd9xxx->dev, "%s: No write allowed. dev_up = %lu\n",
__func__, wcd9xxx->dev_up);
return 0;
}
msgs = kzalloc(size * (sizeof(struct slim_val_inf)), GFP_KERNEL);
if (!msgs) {
ret = -ENOMEM;
goto mem_fail;
}
mutex_lock(&wcd9xxx->io_lock);
reg = bulk_reg->reg;
for (i = 0; i < size; i++) {
msgs[i].start_offset = WCD9XXX_REGISTER_START_OFFSET +
(bulk_reg->reg & 0xFF);
msgs[i].num_bytes = bulk_reg->bytes;
msgs[i].wbuf = bulk_reg->buf;
bulk_reg++;
}
ret = wcd9xxx_page_write(wcd9xxx, &reg);
if (ret) {
pr_err("%s: Page write error for reg: 0x%x\n",
__func__, reg);
goto err;
}
ret = slim_bulk_msg_write(is_interface ?
wcd9xxx->slim_slave : wcd9xxx->slim,
SLIM_MSG_MT_CORE,
SLIM_MSG_MC_CHANGE_VALUE, msgs, size,
NULL, NULL);
if (ret)
pr_err("%s: Error, Codec bulk write failed (%d)\n",
__func__, ret);
/* 100 usec sleep is needed as per HW requirement */
usleep_range(100, 110);
err:
mutex_unlock(&wcd9xxx->io_lock);
kfree(msgs);
mem_fail:
return ret;
}
EXPORT_SYMBOL(wcd9xxx_slim_bulk_write);
static int wcd9xxx_num_irq_regs(const struct wcd9xxx *wcd9xxx)
{
return (wcd9xxx->codec_type->num_irqs / 8) +
((wcd9xxx->codec_type->num_irqs % 8) ? 1 : 0);
}
static int wcd9xxx_regmap_init_cache(struct wcd9xxx *wcd9xxx)
{
struct regmap_config *regmap_config;
int rc;
regmap_config = wcd9xxx_get_regmap_config(wcd9xxx->type);
if (!regmap_config) {
dev_err(wcd9xxx->dev, "regmap config is not defined\n");
return -EINVAL;
}
rc = regmap_reinit_cache(wcd9xxx->regmap, regmap_config);
if (rc != 0) {
dev_err(wcd9xxx->dev, "%s:Failed to reinit register cache: %d\n",
__func__, rc);
}
return rc;
}
static int wcd9xxx_device_init(struct wcd9xxx *wcd9xxx)
{
int ret = 0, i;
struct wcd9xxx_core_resource *core_res = &wcd9xxx->core_res;
regmap_patch_fptr regmap_apply_patch = NULL;
mutex_init(&wcd9xxx->io_lock);
mutex_init(&wcd9xxx->xfer_lock);
mutex_init(&wcd9xxx->reset_lock);
ret = wcd9xxx_bringup(wcd9xxx->dev);
if (ret) {
ret = -EPROBE_DEFER;
goto err_bring_up;
}
wcd9xxx->codec_type = devm_kzalloc(wcd9xxx->dev,
sizeof(struct wcd9xxx_codec_type), GFP_KERNEL);
if (!wcd9xxx->codec_type) {
ret = -ENOMEM;
goto err_bring_up;
}
ret = wcd9xxx_get_codec_info(wcd9xxx->dev);
if (ret) {
ret = -EPROBE_DEFER;
goto fail_cdc_fill;
}
wcd9xxx->version = wcd9xxx->codec_type->version;
if (!wcd9xxx->codec_type->dev || !wcd9xxx->codec_type->size)
goto fail_cdc_fill;
core_res->parent = wcd9xxx;
core_res->dev = wcd9xxx->dev;
core_res->intr_table = wcd9xxx->codec_type->intr_tbl;
core_res->intr_table_size = wcd9xxx->codec_type->intr_tbl_size;
for (i = 0; i < WCD9XXX_INTR_REG_MAX; i++)
wcd9xxx->core_res.intr_reg[i] =
wcd9xxx->codec_type->intr_reg[i];
wcd9xxx_core_res_init(&wcd9xxx->core_res,
wcd9xxx->codec_type->num_irqs,
wcd9xxx_num_irq_regs(wcd9xxx),
wcd9xxx->regmap);
if (wcd9xxx_core_irq_init(&wcd9xxx->core_res))
goto err;
ret = wcd9xxx_regmap_init_cache(wcd9xxx);
if (ret)
goto err_irq;
regmap_apply_patch = wcd9xxx_get_regmap_reg_patch(
wcd9xxx->type);
if (regmap_apply_patch) {
ret = regmap_apply_patch(wcd9xxx->regmap,
wcd9xxx->version);
if (ret)
dev_err(wcd9xxx->dev,
"Failed to register patch: %d\n", ret);
}
ret = mfd_add_devices(wcd9xxx->dev, -1, wcd9xxx->codec_type->dev,
wcd9xxx->codec_type->size, NULL, 0, NULL);
if (ret != 0) {
dev_err(wcd9xxx->dev, "Failed to add children: %d\n", ret);
goto err_irq;
}
ret = device_init_wakeup(wcd9xxx->dev, true);
if (ret) {
dev_err(wcd9xxx->dev, "Device wakeup init failed: %d\n", ret);
goto err_irq;
}
return ret;
err_irq:
wcd9xxx_irq_exit(&wcd9xxx->core_res);
fail_cdc_fill:
devm_kfree(wcd9xxx->dev, wcd9xxx->codec_type);
wcd9xxx->codec_type = NULL;
err:
wcd9xxx_bringdown(wcd9xxx->dev);
wcd9xxx_core_res_deinit(&wcd9xxx->core_res);
err_bring_up:
mutex_destroy(&wcd9xxx->io_lock);
mutex_destroy(&wcd9xxx->xfer_lock);
mutex_destroy(&wcd9xxx->reset_lock);
return ret;
}
static void wcd9xxx_device_exit(struct wcd9xxx *wcd9xxx)
{
device_init_wakeup(wcd9xxx->dev, false);
wcd9xxx_irq_exit(&wcd9xxx->core_res);
wcd9xxx_bringdown(wcd9xxx->dev);
wcd9xxx_reset_low(wcd9xxx->dev);
wcd9xxx_core_res_deinit(&wcd9xxx->core_res);
mutex_destroy(&wcd9xxx->io_lock);
mutex_destroy(&wcd9xxx->xfer_lock);
mutex_destroy(&wcd9xxx->reset_lock);
if (wcd9xxx_get_intf_type() == WCD9XXX_INTERFACE_TYPE_SLIMBUS)
slim_remove_device(wcd9xxx->slim_slave);
}
#ifdef CONFIG_DEBUG_FS
struct wcd9xxx *debugCodec;
static struct dentry *debugfs_wcd9xxx_dent;
static struct dentry *debugfs_peek;
static struct dentry *debugfs_poke;
static struct dentry *debugfs_power_state;
static struct dentry *debugfs_reg_dump;
static unsigned char read_data;
static int codec_debug_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
static int get_parameters(char *buf, long int *param1, int num_of_par)
{
char *token;
int base, cnt;
token = strsep(&buf, " ");
for (cnt = 0; cnt < num_of_par; cnt++) {
if (token != NULL) {
if ((token[1] == 'x') || (token[1] == 'X'))
base = 16;
else
base = 10;
if (kstrtoul(token, base, &param1[cnt]) != 0)
return -EINVAL;
token = strsep(&buf, " ");
} else
return -EINVAL;
}
return 0;
}
static ssize_t wcd9xxx_slimslave_reg_show(char __user *ubuf, size_t count,
loff_t *ppos)
{
int i, reg_val, len;
ssize_t total = 0;
char tmp_buf[25]; /* each line is 12 bytes but 25 for margin of error */
for (i = (int) *ppos / 12; i <= SLIM_MAX_REG_ADDR; i++) {
reg_val = wcd9xxx_interface_reg_read(debugCodec, i);
len = snprintf(tmp_buf, sizeof(tmp_buf),
"0x%.3x: 0x%.2x\n", i, reg_val);
if ((total + len) >= count - 1)
break;
if (copy_to_user((ubuf + total), tmp_buf, len)) {
pr_err("%s: fail to copy reg dump\n", __func__);
total = -EFAULT;
goto copy_err;
}
*ppos += len;
total += len;
}
copy_err:
return total;
}
static ssize_t codec_debug_read(struct file *file, char __user *ubuf,
size_t count, loff_t *ppos)
{
char lbuf[8];
char *access_str = file->private_data;
ssize_t ret_cnt;
if (*ppos < 0 || !count)
return -EINVAL;
if (!strcmp(access_str, "slimslave_peek")) {
snprintf(lbuf, sizeof(lbuf), "0x%x\n", read_data);
ret_cnt = simple_read_from_buffer(ubuf, count, ppos, lbuf,
strnlen(lbuf, 7));
} else if (!strcmp(access_str, "slimslave_reg_dump")) {
ret_cnt = wcd9xxx_slimslave_reg_show(ubuf, count, ppos);
} else {
pr_err("%s: %s not permitted to read\n", __func__, access_str);
ret_cnt = -EPERM;
}
return ret_cnt;
}
static void wcd9xxx_set_reset_pin_state(struct wcd9xxx *wcd9xxx,
struct wcd9xxx_pdata *pdata,
bool active)
{
if (wcd9xxx->wcd_rst_np) {
if (active)
msm_cdc_pinctrl_select_active_state(
wcd9xxx->wcd_rst_np);
else
msm_cdc_pinctrl_select_sleep_state(
wcd9xxx->wcd_rst_np);
return;
} else if (gpio_is_valid(wcd9xxx->reset_gpio)) {
gpio_direction_output(wcd9xxx->reset_gpio,
(active == true ? 1 : 0));
}
}
static int codec_debug_process_cdc_power(char *lbuf)
{
long int param;
int rc;
struct wcd9xxx_pdata *pdata;
if (wcd9xxx_get_intf_type() != WCD9XXX_INTERFACE_TYPE_SLIMBUS) {
pr_err("%s: CODEC is not in SLIMBUS mode\n", __func__);
rc = -EPERM;
goto error_intf;
}
rc = get_parameters(lbuf, &param, 1);
if (likely(!rc)) {
pdata = debugCodec->slim->dev.platform_data;
if (param == 0) {
wcd9xxx_slim_device_down(debugCodec->slim);
msm_cdc_disable_static_supplies(debugCodec->dev,
debugCodec->supplies,
pdata->regulator,
pdata->num_supplies);
wcd9xxx_set_reset_pin_state(debugCodec, pdata, false);
} else if (param == 1) {
msm_cdc_enable_static_supplies(debugCodec->dev,
debugCodec->supplies,
pdata->regulator,
pdata->num_supplies);
usleep_range(1000, 2000);
wcd9xxx_set_reset_pin_state(debugCodec, pdata, false);
usleep_range(1000, 2000);
wcd9xxx_set_reset_pin_state(debugCodec, pdata, true);
usleep_range(1000, 2000);
wcd9xxx_slim_device_up(debugCodec->slim);
} else {
pr_err("%s: invalid command %ld\n", __func__, param);
}
}
error_intf:
return rc;
}
static ssize_t codec_debug_write(struct file *filp,
const char __user *ubuf, size_t cnt, loff_t *ppos)
{
char *access_str = filp->private_data;
char lbuf[32];
int rc;
long int param[5];
if (cnt > sizeof(lbuf) - 1)
return -EINVAL;
rc = copy_from_user(lbuf, ubuf, cnt);
if (rc)
return -EFAULT;
lbuf[cnt] = '\0';
if (!strcmp(access_str, "slimslave_poke")) {
/* write */
rc = get_parameters(lbuf, param, 2);
if ((param[0] <= 0x3FF) && (param[1] <= 0xFF) &&
(rc == 0))
wcd9xxx_interface_reg_write(debugCodec, param[0],
param[1]);
else
rc = -EINVAL;
} else if (!strcmp(access_str, "slimslave_peek")) {
/* read */
rc = get_parameters(lbuf, param, 1);
if ((param[0] <= 0x3FF) && (rc == 0))
read_data = wcd9xxx_interface_reg_read(debugCodec,
param[0]);
else
rc = -EINVAL;
} else if (!strcmp(access_str, "power_state")) {
rc = codec_debug_process_cdc_power(lbuf);
}
if (rc == 0)
rc = cnt;
else
pr_err("%s: rc = %d\n", __func__, rc);
return rc;
}
static const struct file_operations codec_debug_ops = {
.open = codec_debug_open,
.write = codec_debug_write,
.read = codec_debug_read
};
#endif
static struct wcd9xxx_i2c *wcd9xxx_i2c_get_device_info(struct wcd9xxx *wcd9xxx,
u16 reg)
{
u16 mask = 0x0f00;
int value = 0;
struct wcd9xxx_i2c *wcd9xxx_i2c = NULL;
if (wcd9xxx->type == WCD9335) {
wcd9xxx_i2c = &wcd9xxx_modules[0];
} else {
value = ((reg & mask) >> 8) & 0x000f;
switch (value) {
case 0:
wcd9xxx_i2c = &wcd9xxx_modules[0];
break;
case 1:
wcd9xxx_i2c = &wcd9xxx_modules[1];
break;
case 2:
wcd9xxx_i2c = &wcd9xxx_modules[2];
break;
case 3:
wcd9xxx_i2c = &wcd9xxx_modules[3];
break;
default:
break;
}
}
return wcd9xxx_i2c;
}
static int wcd9xxx_i2c_write_device(struct wcd9xxx *wcd9xxx, u16 reg, u8 *value,
u32 bytes)
{
struct i2c_msg *msg;
int ret = 0;
u8 reg_addr = 0;
u8 data[bytes + 1];
struct wcd9xxx_i2c *wcd9xxx_i2c;
wcd9xxx_i2c = wcd9xxx_i2c_get_device_info(wcd9xxx, reg);
if (wcd9xxx_i2c == NULL || wcd9xxx_i2c->client == NULL) {
pr_err("failed to get device info\n");
return -ENODEV;
}
reg_addr = (u8)reg;
msg = &wcd9xxx_i2c->xfer_msg[0];
msg->addr = wcd9xxx_i2c->client->addr;
msg->len = bytes + 1;
msg->flags = 0;
data[0] = reg;
data[1] = *value;
msg->buf = data;
ret = i2c_transfer(wcd9xxx_i2c->client->adapter,
wcd9xxx_i2c->xfer_msg, 1);
/* Try again if the write fails */
if (ret != 1) {
ret = i2c_transfer(wcd9xxx_i2c->client->adapter,
wcd9xxx_i2c->xfer_msg, 1);
if (ret != 1) {
pr_err("failed to write the device\n");
return ret;
}
}
pr_debug("write success register = %x val = %x\n", reg, data[1]);
return 0;
}
static int wcd9xxx_i2c_read_device(struct wcd9xxx *wcd9xxx, unsigned short reg,
int bytes, unsigned char *dest)
{
struct i2c_msg *msg;
int ret = 0;
u8 reg_addr = 0;
struct wcd9xxx_i2c *wcd9xxx_i2c;
u8 i = 0;
wcd9xxx_i2c = wcd9xxx_i2c_get_device_info(wcd9xxx, reg);
if (wcd9xxx_i2c == NULL || wcd9xxx_i2c->client == NULL) {
pr_err("failed to get device info\n");
return -ENODEV;
}
for (i = 0; i < bytes; i++) {
reg_addr = (u8)reg++;
msg = &wcd9xxx_i2c->xfer_msg[0];
msg->addr = wcd9xxx_i2c->client->addr;
msg->len = 1;
msg->flags = 0;
msg->buf = &reg_addr;
msg = &wcd9xxx_i2c->xfer_msg[1];
msg->addr = wcd9xxx_i2c->client->addr;
msg->len = 1;
msg->flags = I2C_M_RD;
msg->buf = dest++;
ret = i2c_transfer(wcd9xxx_i2c->client->adapter,
wcd9xxx_i2c->xfer_msg, 2);
/* Try again if read fails first time */
if (ret != 2) {
ret = i2c_transfer(wcd9xxx_i2c->client->adapter,
wcd9xxx_i2c->xfer_msg, 2);
if (ret != 2) {
pr_err("failed to read wcd9xxx register\n");
return ret;
}
}
}
return 0;
}
int wcd9xxx_i2c_read(struct wcd9xxx *wcd9xxx, unsigned short reg,
int bytes, void *dest, bool interface_reg)
{
return wcd9xxx_i2c_read_device(wcd9xxx, reg, bytes, dest);
}
int wcd9xxx_i2c_write(struct wcd9xxx *wcd9xxx, unsigned short reg,
int bytes, void *src, bool interface_reg)
{
return wcd9xxx_i2c_write_device(wcd9xxx, reg, src, bytes);
}
static int wcd9xxx_i2c_get_client_index(struct i2c_client *client,
int *wcd9xx_index)
{
int ret = 0;
switch (client->addr) {
case WCD9XXX_I2C_TOP_SLAVE_ADDR:
*wcd9xx_index = WCD9XXX_I2C_TOP_LEVEL;
break;
case WCD9XXX_ANALOG_I2C_SLAVE_ADDR:
*wcd9xx_index = WCD9XXX_I2C_ANALOG;
break;
case WCD9XXX_DIGITAL1_I2C_SLAVE_ADDR:
*wcd9xx_index = WCD9XXX_I2C_DIGITAL_1;
break;
case WCD9XXX_DIGITAL2_I2C_SLAVE_ADDR:
*wcd9xx_index = WCD9XXX_I2C_DIGITAL_2;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int wcd9xxx_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct wcd9xxx *wcd9xxx = NULL;
struct wcd9xxx_pdata *pdata = NULL;
int val = 0;
int ret = 0;
int wcd9xx_index = 0;
struct device *dev;
int intf_type;
const struct of_device_id *of_id;
intf_type = wcd9xxx_get_intf_type();
pr_debug("%s: interface status %d\n", __func__, intf_type);
if (intf_type == WCD9XXX_INTERFACE_TYPE_SLIMBUS) {
dev_dbg(&client->dev, "%s:Codec is detected in slimbus mode\n",
__func__);
return -ENODEV;
} else if (intf_type == WCD9XXX_INTERFACE_TYPE_I2C) {
ret = wcd9xxx_i2c_get_client_index(client, &wcd9xx_index);
if (ret != 0)
dev_err(&client->dev, "%s: I2C set codec I2C\n"
"client failed\n", __func__);
else {
dev_err(&client->dev, "%s:probe for other slaves\n"
"devices of codec I2C slave Addr = %x\n",
__func__, client->addr);
wcd9xxx_modules[wcd9xx_index].client = client;
}
return ret;
} else if (intf_type == WCD9XXX_INTERFACE_TYPE_PROBING) {
dev = &client->dev;
if (client->dev.of_node) {
dev_dbg(&client->dev, "%s:Platform data\n"
"from device tree\n", __func__);
pdata = wcd9xxx_populate_dt_data(&client->dev);
if (!pdata) {
dev_err(&client->dev,
"%s: Fail to obtain pdata from device tree\n",
__func__);
ret = -EINVAL;
goto fail;
}
client->dev.platform_data = pdata;
} else {
dev_dbg(&client->dev, "%s:Platform data from\n"
"board file\n", __func__);
pdata = client->dev.platform_data;
}
wcd9xxx = devm_kzalloc(&client->dev, sizeof(struct wcd9xxx),
GFP_KERNEL);
if (!wcd9xxx) {
ret = -ENOMEM;
goto fail;
}
if (!pdata) {
dev_dbg(&client->dev, "no platform data?\n");
ret = -EINVAL;
goto fail;
}
wcd9xxx->type = WCD9XXX;
if (client->dev.of_node) {
of_id = of_match_device(wcd9xxx_of_match, &client->dev);
if (of_id) {
wcd9xxx->type = *((int *)of_id->data);
dev_info(&client->dev, "%s: codec type is %d\n",
__func__, wcd9xxx->type);
}
} else {
dev_info(&client->dev, "%s: dev.of_node is NULL, default to WCD9XXX\n",
__func__);
wcd9xxx->type = WCD9XXX;
}
wcd9xxx->regmap = wcd9xxx_regmap_init(&client->dev,
&wcd9xxx_i2c_base_regmap_config);
if (IS_ERR(wcd9xxx->regmap)) {
ret = PTR_ERR(wcd9xxx->regmap);
dev_err(&client->dev, "%s: Failed to allocate register map: %d\n",
__func__, ret);
goto err_codec;
}
wcd9xxx->reset_gpio = pdata->reset_gpio;
wcd9xxx->wcd_rst_np = pdata->wcd_rst_np;
if (!wcd9xxx->wcd_rst_np) {
pdata->use_pinctrl = false;
dev_err(&client->dev, "%s: pinctrl not used for rst_n\n",
__func__);
goto err_codec;
}
if (i2c_check_functionality(client->adapter,
I2C_FUNC_I2C) == 0) {
dev_dbg(&client->dev, "can't talk I2C?\n");
ret = -EIO;
goto fail;
}
dev_set_drvdata(&client->dev, wcd9xxx);
wcd9xxx->dev = &client->dev;
wcd9xxx->dev_up = true;
if (client->dev.of_node)
wcd9xxx->mclk_rate = pdata->mclk_rate;
wcd9xxx->num_of_supplies = pdata->num_supplies;
ret = msm_cdc_init_supplies(wcd9xxx->dev, &wcd9xxx->supplies,
pdata->regulator,
pdata->num_supplies);
if (!wcd9xxx->supplies) {
dev_err(wcd9xxx->dev, "%s: Cannot init wcd supplies\n",
__func__);
goto err_codec;
}
ret = msm_cdc_enable_static_supplies(wcd9xxx->dev,
wcd9xxx->supplies,
pdata->regulator,
pdata->num_supplies);
if (ret) {
dev_err(wcd9xxx->dev, "%s: wcd static supply enable failed!\n",
__func__);
goto err_codec;
}
/* For WCD9335, it takes about 600us for the Vout_A and
* Vout_D to be ready after BUCK_SIDO is powered up\
* SYS_RST_N shouldn't be pulled high during this time
*/
if (wcd9xxx->type == WCD9335)
usleep_range(600, 650);
else
usleep_range(5, 10);
ret = wcd9xxx_reset(wcd9xxx->dev);
if (ret) {
pr_err("%s: Resetting Codec failed\n", __func__);
goto err_supplies;
}
ret = wcd9xxx_i2c_get_client_index(client, &wcd9xx_index);
if (ret != 0) {
pr_err("%s:Set codec I2C client failed\n", __func__);
goto err_supplies;
}
wcd9xxx_modules[wcd9xx_index].client = client;
wcd9xxx->read_dev = wcd9xxx_i2c_read;
wcd9xxx->write_dev = wcd9xxx_i2c_write;
if (!wcd9xxx->dev->of_node)
wcd9xxx_assign_irq(&wcd9xxx->core_res,
pdata->irq, pdata->irq_base);
ret = wcd9xxx_device_init(wcd9xxx);
if (ret) {
pr_err("%s: error, initializing device failed (%d)\n",
__func__, ret);
goto err_device_init;
}
ret = wcd9xxx_i2c_read(wcd9xxx, WCD9XXX_A_CHIP_STATUS, 1,
&val, 0);
if (ret < 0)
pr_err("%s: failed to read the wcd9xxx status (%d)\n",
__func__, ret);
if (val != wcd9xxx->codec_type->i2c_chip_status)
pr_err("%s: unknown chip status 0x%x\n", __func__, val);
wcd9xxx_set_intf_type(WCD9XXX_INTERFACE_TYPE_I2C);
return ret;
}
pr_err("%s: I2C probe in wrong state\n", __func__);
err_device_init:
wcd9xxx_reset_low(wcd9xxx->dev);
err_supplies:
msm_cdc_release_supplies(wcd9xxx->dev, wcd9xxx->supplies,
pdata->regulator,
pdata->num_supplies);
pdata->regulator = NULL;
pdata->num_supplies = 0;
err_codec:
devm_kfree(&client->dev, wcd9xxx);
dev_set_drvdata(&client->dev, NULL);
fail:
return ret;
}
static int wcd9xxx_i2c_remove(struct i2c_client *client)
{
struct wcd9xxx *wcd9xxx;
struct wcd9xxx_pdata *pdata = client->dev.platform_data;
wcd9xxx = dev_get_drvdata(&client->dev);
msm_cdc_release_supplies(wcd9xxx->dev, wcd9xxx->supplies,
pdata->regulator,
pdata->num_supplies);
wcd9xxx_device_exit(wcd9xxx);
dev_set_drvdata(&client->dev, NULL);
return 0;
}
static int wcd9xxx_dt_parse_slim_interface_dev_info(struct device *dev,
struct slim_device *slim_ifd)
{
int ret = 0;
struct property *prop;
ret = of_property_read_string(dev->of_node, "qcom,cdc-slim-ifd",
&slim_ifd->name);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
"qcom,cdc-slim-ifd-dev", dev->of_node->full_name);
return -ENODEV;
}
prop = of_find_property(dev->of_node,
"qcom,cdc-slim-ifd-elemental-addr", NULL);
if (!prop) {
dev_err(dev, "Looking up %s property in node %s failed",
"qcom,cdc-slim-ifd-elemental-addr",
dev->of_node->full_name);
return -ENODEV;
} else if (prop->length != 6) {
dev_err(dev, "invalid codec slim ifd addr. addr length = %d\n",
prop->length);
return -ENODEV;
}
memcpy(slim_ifd->e_addr, prop->value, 6);
return 0;
}
static int wcd9xxx_slim_get_laddr(struct slim_device *sb,
const u8 *e_addr, u8 e_len, u8 *laddr)
{
int ret;
const unsigned long timeout = jiffies +
msecs_to_jiffies(SLIMBUS_PRESENT_TIMEOUT);
do {
ret = slim_get_logical_addr(sb, e_addr, e_len, laddr);
if (!ret)
break;
/* Give SLIMBUS time to report present and be ready. */
usleep_range(1000, 1100);
pr_debug_ratelimited("%s: retyring get logical addr\n",
__func__);
} while time_before(jiffies, timeout);
return ret;
}
static int wcd9xxx_slim_probe(struct slim_device *slim)
{
struct wcd9xxx *wcd9xxx;
struct wcd9xxx_pdata *pdata;
const struct slim_device_id *device_id;
int ret = 0;
int intf_type;
intf_type = wcd9xxx_get_intf_type();
wcd9xxx = devm_kzalloc(&slim->dev, sizeof(struct wcd9xxx),
GFP_KERNEL);
if (!wcd9xxx) {
ret = -ENOMEM;
goto err;
}
if (!slim) {
ret = -EINVAL;
goto err;
}
if (intf_type == WCD9XXX_INTERFACE_TYPE_I2C) {
dev_dbg(&slim->dev, "%s:Codec is detected in I2C mode\n",
__func__);
ret = -ENODEV;
goto err;
}
if (slim->dev.of_node) {
dev_info(&slim->dev, "Platform data from device tree\n");
pdata = wcd9xxx_populate_dt_data(&slim->dev);
if (!pdata) {
dev_err(&slim->dev,
"%s: Fail to obtain pdata from device tree\n",
__func__);
ret = -EINVAL;
goto err;
}
ret = wcd9xxx_dt_parse_slim_interface_dev_info(&slim->dev,
&pdata->slimbus_slave_device);
if (ret) {
dev_err(&slim->dev, "Error, parsing slim interface\n");
devm_kfree(&slim->dev, pdata);
ret = -EINVAL;
goto err;
}
slim->dev.platform_data = pdata;
} else {
dev_info(&slim->dev, "Platform data from board file\n");
pdata = slim->dev.platform_data;
}
if (!pdata) {
dev_err(&slim->dev, "Error, no platform data\n");
ret = -EINVAL;
goto err;
}
if (!slim->ctrl) {
dev_err(&slim->dev, "%s: Error, no SLIMBUS control data\n",
__func__);
ret = -EINVAL;
goto err_codec;
}
if (pdata->has_buck_vsel_gpio)
msm_cdc_pinctrl_select_active_state(pdata->buck_vsel_ctl_np);
device_id = slim_get_device_id(slim);
if (!device_id) {
dev_err(&slim->dev, "%s: Error, no device id\n", __func__);
ret = -EINVAL;
goto err;
}
wcd9xxx->type = device_id->driver_data;
dev_info(&slim->dev, "%s: probing for wcd type: %d, name: %s\n",
__func__, wcd9xxx->type, device_id->name);
/* wcd9xxx members init */
wcd9xxx->multi_reg_write = wcd9xxx_slim_multi_reg_write;
wcd9xxx->slim = slim;
slim_set_clientdata(slim, wcd9xxx);
wcd9xxx->reset_gpio = pdata->reset_gpio;
wcd9xxx->dev = &slim->dev;
wcd9xxx->mclk_rate = pdata->mclk_rate;
wcd9xxx->dev_up = true;
wcd9xxx->wcd_rst_np = pdata->wcd_rst_np;
wcd9xxx->regmap = wcd9xxx_regmap_init(&slim->dev,
&wcd9xxx_base_regmap_config);
if (IS_ERR(wcd9xxx->regmap)) {
ret = PTR_ERR(wcd9xxx->regmap);
dev_err(&slim->dev, "%s: Failed to allocate register map: %d\n",
__func__, ret);
goto err_codec;
}
if (!wcd9xxx->wcd_rst_np) {
pdata->use_pinctrl = false;
dev_err(&slim->dev, "%s: pinctrl not used for rst_n\n",
__func__);
goto err_codec;
}
wcd9xxx->num_of_supplies = pdata->num_supplies;
ret = msm_cdc_init_supplies(&slim->dev, &wcd9xxx->supplies,
pdata->regulator,
pdata->num_supplies);
if (!wcd9xxx->supplies) {
dev_err(wcd9xxx->dev, "%s: Cannot init wcd supplies\n",
__func__);
goto err_codec;
}
ret = msm_cdc_enable_static_supplies(wcd9xxx->dev,
wcd9xxx->supplies,
pdata->regulator,
pdata->num_supplies);
if (ret) {
dev_err(wcd9xxx->dev, "%s: wcd static supply enable failed!\n",
__func__);
goto err_codec;
}
/*
* For WCD9335, it takes about 600us for the Vout_A and
* Vout_D to be ready after BUCK_SIDO is powered up.
* SYS_RST_N shouldn't be pulled high during this time
*/
if (wcd9xxx->type == WCD9335 || wcd9xxx->type == WCD934X)
usleep_range(600, 650);
else
usleep_range(5, 10);
ret = wcd9xxx_reset(&slim->dev);
if (ret) {
dev_err(&slim->dev, "%s: Resetting Codec failed\n", __func__);
goto err_supplies;
}
ret = wcd9xxx_slim_get_laddr(wcd9xxx->slim, wcd9xxx->slim->e_addr,
ARRAY_SIZE(wcd9xxx->slim->e_addr),
&wcd9xxx->slim->laddr);
if (ret) {
dev_err(&slim->dev, "%s: failed to get slimbus %s logical address: %d\n",
__func__, wcd9xxx->slim->name, ret);
goto err_reset;
}
wcd9xxx->read_dev = wcd9xxx_slim_read_device;
wcd9xxx->write_dev = wcd9xxx_slim_write_device;
wcd9xxx_pgd_la = wcd9xxx->slim->laddr;
wcd9xxx->slim_slave = &pdata->slimbus_slave_device;
if (!wcd9xxx->dev->of_node)
wcd9xxx_assign_irq(&wcd9xxx->core_res,
pdata->irq, pdata->irq_base);
ret = slim_add_device(slim->ctrl, wcd9xxx->slim_slave);
if (ret) {
dev_err(&slim->dev, "%s: error, adding SLIMBUS device failed\n",
__func__);
goto err_reset;
}
ret = wcd9xxx_slim_get_laddr(wcd9xxx->slim_slave,
wcd9xxx->slim_slave->e_addr,
ARRAY_SIZE(wcd9xxx->slim_slave->e_addr),
&wcd9xxx->slim_slave->laddr);
if (ret) {
dev_err(&slim->dev, "%s: failed to get slimbus %s logical address: %d\n",
__func__, wcd9xxx->slim->name, ret);
goto err_slim_add;
}
wcd9xxx_inf_la = wcd9xxx->slim_slave->laddr;
wcd9xxx_set_intf_type(WCD9XXX_INTERFACE_TYPE_SLIMBUS);
ret = wcd9xxx_device_init(wcd9xxx);
if (ret) {
dev_err(&slim->dev, "%s: error, initializing device failed (%d)\n",
__func__, ret);
goto err_slim_add;
}
#ifdef CONFIG_DEBUG_FS
debugCodec = wcd9xxx;
debugfs_wcd9xxx_dent = debugfs_create_dir
("wcd9xxx_core", 0);
if (!IS_ERR(debugfs_wcd9xxx_dent)) {
debugfs_peek = debugfs_create_file("slimslave_peek",
S_IFREG | 0444, debugfs_wcd9xxx_dent,
(void *) "slimslave_peek", &codec_debug_ops);
debugfs_poke = debugfs_create_file("slimslave_poke",
S_IFREG | 0444, debugfs_wcd9xxx_dent,
(void *) "slimslave_poke", &codec_debug_ops);
debugfs_power_state = debugfs_create_file("power_state",
S_IFREG | 0444, debugfs_wcd9xxx_dent,
(void *) "power_state", &codec_debug_ops);
debugfs_reg_dump = debugfs_create_file("slimslave_reg_dump",
S_IFREG | 0444, debugfs_wcd9xxx_dent,
(void *) "slimslave_reg_dump", &codec_debug_ops);
}
#endif
return ret;
err_slim_add:
slim_remove_device(wcd9xxx->slim_slave);
err_reset:
wcd9xxx_reset_low(wcd9xxx->dev);
err_supplies:
msm_cdc_release_supplies(wcd9xxx->dev, wcd9xxx->supplies,
pdata->regulator,
pdata->num_supplies);
err_codec:
slim_set_clientdata(slim, NULL);
err:
devm_kfree(&slim->dev, wcd9xxx);
return ret;
}
static int wcd9xxx_slim_remove(struct slim_device *pdev)
{
struct wcd9xxx *wcd9xxx;
struct wcd9xxx_pdata *pdata = pdev->dev.platform_data;
#ifdef CONFIG_DEBUG_FS
debugfs_remove_recursive(debugfs_wcd9xxx_dent);
#endif
wcd9xxx = slim_get_devicedata(pdev);
wcd9xxx_deinit_slimslave(wcd9xxx);
slim_remove_device(wcd9xxx->slim_slave);
msm_cdc_release_supplies(wcd9xxx->dev, wcd9xxx->supplies,
pdata->regulator,
pdata->num_supplies);
wcd9xxx_device_exit(wcd9xxx);
slim_set_clientdata(pdev, NULL);
return 0;
}
static int wcd9xxx_device_up(struct wcd9xxx *wcd9xxx)
{
int ret = 0;
struct wcd9xxx_core_resource *wcd9xxx_res = &wcd9xxx->core_res;
dev_info(wcd9xxx->dev, "%s: codec bring up\n", __func__);
wcd9xxx_bringup(wcd9xxx->dev);
ret = wcd9xxx_irq_init(wcd9xxx_res);
if (ret) {
pr_err("%s: wcd9xx_irq_init failed : %d\n", __func__, ret);
} else {
if (wcd9xxx->post_reset)
ret = wcd9xxx->post_reset(wcd9xxx);
}
return ret;
}
static int wcd9xxx_slim_device_reset(struct slim_device *sldev)
{
int ret;
struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev);
if (!wcd9xxx) {
pr_err("%s: wcd9xxx is NULL\n", __func__);
return -EINVAL;
}
/*
* Wait for 500 ms for device down to complete. Observed delay
* of ~200ms for device down to complete after being called,
* due to context switch issue.
*/
ret = wait_on_bit_timeout(&wcd9xxx->dev_up, 0,
TASK_INTERRUPTIBLE,
msecs_to_jiffies(500));
if (ret)
pr_err("%s: slim device down not complete in 500 msec\n",
__func__);
mutex_lock(&wcd9xxx->reset_lock);
dev_info(wcd9xxx->dev, "%s: device reset, dev_up = %lu\n",
__func__, wcd9xxx->dev_up);
if (wcd9xxx->dev_up) {
mutex_unlock(&wcd9xxx->reset_lock);
return 0;
}
ret = wcd9xxx_reset(wcd9xxx->dev);
if (ret)
dev_err(wcd9xxx->dev, "%s: Resetting Codec failed\n", __func__);
mutex_unlock(&wcd9xxx->reset_lock);
return ret;
}
static int wcd9xxx_slim_device_up(struct slim_device *sldev)
{
struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev);
int ret = 0;
if (!wcd9xxx) {
pr_err("%s: wcd9xxx is NULL\n", __func__);
return -EINVAL;
}
dev_info(wcd9xxx->dev, "%s: slim device up, dev_up = %lu\n",
__func__, wcd9xxx->dev_up);
if (wcd9xxx->dev_up)
return 0;
wcd9xxx->dev_up = true;
mutex_lock(&wcd9xxx->reset_lock);
ret = wcd9xxx_device_up(wcd9xxx);
mutex_unlock(&wcd9xxx->reset_lock);
return ret;
}
static int wcd9xxx_slim_device_down(struct slim_device *sldev)
{
struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev);
if (!wcd9xxx) {
pr_err("%s: wcd9xxx is NULL\n", __func__);
return -EINVAL;
}
mutex_lock(&wcd9xxx->reset_lock);
dev_info(wcd9xxx->dev, "%s: device down, dev_up = %lu\n",
__func__, wcd9xxx->dev_up);
if (!wcd9xxx->dev_up) {
mutex_unlock(&wcd9xxx->reset_lock);
return 0;
}
if (wcd9xxx->dev_down)
wcd9xxx->dev_down(wcd9xxx);
wcd9xxx_irq_exit(&wcd9xxx->core_res);
wcd9xxx_reset_low(wcd9xxx->dev);
wcd9xxx->dev_up = false;
mutex_unlock(&wcd9xxx->reset_lock);
return 0;
}
static int wcd9xxx_slim_resume(struct slim_device *sldev)
{
struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev);
return wcd9xxx_core_res_resume(&wcd9xxx->core_res);
}
static int wcd9xxx_i2c_resume(struct device *dev)
{
struct wcd9xxx *wcd9xxx = dev_get_drvdata(dev);
if (wcd9xxx)
return wcd9xxx_core_res_resume(&wcd9xxx->core_res);
else
return 0;
}
static int wcd9xxx_slim_suspend(struct slim_device *sldev, pm_message_t pmesg)
{
struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev);
return wcd9xxx_core_res_suspend(&wcd9xxx->core_res, pmesg);
}
static int wcd9xxx_i2c_suspend(struct device *dev)
{
struct wcd9xxx *wcd9xxx = dev_get_drvdata(dev);
pm_message_t pmesg = {0};
if (wcd9xxx)
return wcd9xxx_core_res_suspend(&wcd9xxx->core_res, pmesg);
else
return 0;
}
static const struct slim_device_id wcd_slim_device_id[] = {
{"sitar-slim", 0},
{"sitar1p1-slim", 0},
{"tabla-slim", 0},
{"tabla2x-slim", 0},
{"taiko-slim-pgd", 0},
{"tapan-slim-pgd", 0},
{"tomtom-slim-pgd", WCD9330},
{"tasha-slim-pgd", WCD9335},
{"tavil-slim-pgd", WCD934X},
{}
};
static struct slim_driver wcd_slim_driver = {
.driver = {
.name = "wcd-slim",
.owner = THIS_MODULE,
},
.probe = wcd9xxx_slim_probe,
.remove = wcd9xxx_slim_remove,
.id_table = wcd_slim_device_id,
.resume = wcd9xxx_slim_resume,
.suspend = wcd9xxx_slim_suspend,
.device_up = wcd9xxx_slim_device_up,
.reset_device = wcd9xxx_slim_device_reset,
.device_down = wcd9xxx_slim_device_down,
};
static struct i2c_device_id wcd9xxx_id_table[] = {
{"wcd9xxx-i2c", WCD9XXX_I2C_TOP_LEVEL},
{"wcd9xxx-i2c", WCD9XXX_I2C_ANALOG},
{"wcd9xxx-i2c", WCD9XXX_I2C_DIGITAL_1},
{"wcd9xxx-i2c", WCD9XXX_I2C_DIGITAL_2},
{}
};
static struct i2c_device_id tasha_id_table[] = {
{"tasha-i2c-pgd", WCD9XXX_I2C_TOP_LEVEL},
{}
};
static struct i2c_device_id tabla_id_table[] = {
{"tabla top level", WCD9XXX_I2C_TOP_LEVEL},
{"tabla analog", WCD9XXX_I2C_ANALOG},
{"tabla digital1", WCD9XXX_I2C_DIGITAL_1},
{"tabla digital2", WCD9XXX_I2C_DIGITAL_2},
{}
};
MODULE_DEVICE_TABLE(i2c, tabla_id_table);
static const struct dev_pm_ops wcd9xxx_i2c_pm_ops = {
.suspend = wcd9xxx_i2c_suspend,
.resume = wcd9xxx_i2c_resume,
};
static struct i2c_driver tabla_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "tabla-i2c-core",
.pm = &wcd9xxx_i2c_pm_ops,
},
.id_table = tabla_id_table,
.probe = wcd9xxx_i2c_probe,
.remove = wcd9xxx_i2c_remove,
};
static struct i2c_driver wcd9xxx_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "wcd9xxx-i2c-core",
.pm = &wcd9xxx_i2c_pm_ops,
},
.id_table = wcd9xxx_id_table,
.probe = wcd9xxx_i2c_probe,
.remove = wcd9xxx_i2c_remove,
};
static struct i2c_driver wcd9335_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "tasha-i2c-core",
.pm = &wcd9xxx_i2c_pm_ops,
},
.id_table = tasha_id_table,
.probe = wcd9xxx_i2c_probe,
.remove = wcd9xxx_i2c_remove,
};
int wcd9xxx_init(void)
{
int ret[NUM_WCD9XXX_REG_RET] = {0};
int i = 0;
wcd9xxx_set_intf_type(WCD9XXX_INTERFACE_TYPE_PROBING);
ret[0] = i2c_add_driver(&tabla_i2c_driver);
if (ret[0])
pr_err("%s: Failed to add the tabla2x I2C driver: %d\n",
__func__, ret[0]);
ret[1] = i2c_add_driver(&wcd9xxx_i2c_driver);
if (ret[1])
pr_err("%s: Failed to add the wcd9xxx I2C driver: %d\n",
__func__, ret[1]);
ret[2] = i2c_add_driver(&wcd9335_i2c_driver);
if (ret[2])
pr_err("%s: Failed to add the wcd9335 I2C driver: %d\n",
__func__, ret[2]);
ret[3] = slim_driver_register(&wcd_slim_driver);
if (ret[3])
pr_err("%s: Failed to register wcd SB driver: %d\n",
__func__, ret[3]);
for (i = 0; i < NUM_WCD9XXX_REG_RET; i++) {
if (ret[i])
return ret[i];
}
return 0;
}
void wcd9xxx_exit(void)
{
wcd9xxx_set_intf_type(WCD9XXX_INTERFACE_TYPE_PROBING);
i2c_del_driver(&tabla_i2c_driver);
i2c_del_driver(&wcd9xxx_i2c_driver);
i2c_del_driver(&wcd9335_i2c_driver);
slim_driver_unregister(&wcd_slim_driver);
}
MODULE_DESCRIPTION("Codec core driver");
MODULE_LICENSE("GPL v2");