blob: d43b3990394b982e9aec0648649da5572de86ff9 [file] [log] [blame]
/* Copyright (c) 2011-2012, Code Aurora Forum. 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_gpio.h>
#include <linux/of_irq.h>
#include <linux/slab.h>
#include <linux/mfd/core.h>
#include <linux/mfd/wcd9xxx/wcd9xxx-slimslave.h>
#include <linux/mfd/wcd9xxx/core.h>
#include <linux/mfd/wcd9xxx/pdata.h>
#include <linux/mfd/wcd9xxx/wcd9xxx_registers.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/debugfs.h>
#include <linux/regulator/consumer.h>
#include <linux/i2c.h>
#include <sound/soc.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 TABLA_I2C_MODE 0x03
#define SITAR_I2C_MODE 0x01
#define CODEC_DT_MAX_PROP_SIZE 40
#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
struct wcd9xxx_i2c {
struct i2c_client *client;
struct i2c_msg xfer_msg[2];
struct mutex xfer_lock;
int mod_id;
};
static char *taiko_supplies[] = {
"cdc-vdd-buck", "cdc-vdd-tx-h", "cdc-vdd-rx-h", "cdc-vddpx-1",
"cdc-vdd-a-1p2v", "cdc-vddcx-1", "cdc-vddcx-2",
};
static int wcd9xxx_dt_parse_vreg_info(struct device *dev,
struct wcd9xxx_regulator *vreg, const char *vreg_name);
static int wcd9xxx_dt_parse_micbias_info(struct device *dev,
struct wcd9xxx_micbias_setting *micbias);
static struct wcd9xxx_pdata *wcd9xxx_populate_dt_pdata(struct device *dev);
struct wcd9xxx_i2c wcd9xxx_modules[MAX_WCD9XXX_DEVICE];
static int wcd9xxx_intf = -1;
static int wcd9xxx_read(struct wcd9xxx *wcd9xxx, unsigned short reg,
int bytes, void *dest, bool interface_reg)
{
int ret;
u8 *buf = dest;
if (bytes <= 0) {
dev_err(wcd9xxx->dev, "Invalid byte read length %d\n", bytes);
return -EINVAL;
}
ret = wcd9xxx->read_dev(wcd9xxx, reg, bytes, dest, interface_reg);
if (ret < 0) {
dev_err(wcd9xxx->dev, "Codec read failed\n");
return ret;
} else
dev_dbg(wcd9xxx->dev, "Read 0x%02x from 0x%x\n",
*buf, reg);
return 0;
}
int wcd9xxx_reg_read(struct wcd9xxx *wcd9xxx, unsigned short reg)
{
u8 val;
int ret;
mutex_lock(&wcd9xxx->io_lock);
ret = wcd9xxx_read(wcd9xxx, reg, 1, &val, false);
mutex_unlock(&wcd9xxx->io_lock);
if (ret < 0)
return ret;
else
return val;
}
EXPORT_SYMBOL_GPL(wcd9xxx_reg_read);
static int wcd9xxx_write(struct wcd9xxx *wcd9xxx, unsigned short reg,
int bytes, void *src, bool interface_reg)
{
u8 *buf = src;
if (bytes <= 0) {
pr_err("%s: Error, invalid write length\n", __func__);
return -EINVAL;
}
dev_dbg(wcd9xxx->dev, "Write %02x to 0x%x\n",
*buf, reg);
return wcd9xxx->write_dev(wcd9xxx, reg, bytes, src, interface_reg);
}
int wcd9xxx_reg_write(struct wcd9xxx *wcd9xxx, unsigned short reg,
u8 val)
{
int ret;
mutex_lock(&wcd9xxx->io_lock);
ret = wcd9xxx_write(wcd9xxx, reg, 1, &val, false);
mutex_unlock(&wcd9xxx->io_lock);
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_reg_write);
static u8 wcd9xxx_pgd_la;
static u8 wcd9xxx_inf_la;
int wcd9xxx_interface_reg_read(struct wcd9xxx *wcd9xxx, unsigned short reg)
{
u8 val;
int ret;
mutex_lock(&wcd9xxx->io_lock);
ret = wcd9xxx_read(wcd9xxx, reg, 1, &val, true);
mutex_unlock(&wcd9xxx->io_lock);
if (ret < 0)
return ret;
else
return val;
}
EXPORT_SYMBOL_GPL(wcd9xxx_interface_reg_read);
int wcd9xxx_interface_reg_write(struct wcd9xxx *wcd9xxx, unsigned short reg,
u8 val)
{
int ret;
mutex_lock(&wcd9xxx->io_lock);
ret = wcd9xxx_write(wcd9xxx, reg, 1, &val, true);
mutex_unlock(&wcd9xxx->io_lock);
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_interface_reg_write);
int wcd9xxx_bulk_read(struct wcd9xxx *wcd9xxx, unsigned short reg,
int count, u8 *buf)
{
int ret;
mutex_lock(&wcd9xxx->io_lock);
ret = wcd9xxx_read(wcd9xxx, reg, count, buf, false);
mutex_unlock(&wcd9xxx->io_lock);
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_bulk_read);
int wcd9xxx_bulk_write(struct wcd9xxx *wcd9xxx, unsigned short reg,
int count, u8 *buf)
{
int ret;
mutex_lock(&wcd9xxx->io_lock);
ret = wcd9xxx_write(wcd9xxx, reg, count, buf, false);
mutex_unlock(&wcd9xxx->io_lock);
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_bulk_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;
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, 5000);
}
if (ret)
pr_err("%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;
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, 5000);
}
if (ret)
pr_err("%s: Error, Codec write failed (%d)\n", __func__, ret);
return ret;
}
static struct mfd_cell tabla1x_devs[] = {
{
.name = "tabla1x_codec",
},
};
static struct mfd_cell tabla_devs[] = {
{
.name = "tabla_codec",
},
};
static struct mfd_cell sitar_devs[] = {
{
.name = "sitar_codec",
},
};
static struct mfd_cell taiko_devs[] = {
{
.name = "taiko_codec",
},
};
static struct wcd9xx_codec_type {
u8 byte[4];
struct mfd_cell *dev;
int size;
int num_irqs;
} wcd9xxx_codecs[] = {
{{0x2, 0x0, 0x0, 0x1}, tabla_devs, ARRAY_SIZE(tabla_devs),
TABLA_NUM_IRQS},
{{0x1, 0x0, 0x0, 0x1}, tabla1x_devs, ARRAY_SIZE(tabla1x_devs),
TABLA_NUM_IRQS},
{{0x0, 0x0, 0x2, 0x1}, taiko_devs, ARRAY_SIZE(taiko_devs),
TAIKO_NUM_IRQS},
{{0x0, 0x0, 0x0, 0x1}, sitar_devs, ARRAY_SIZE(sitar_devs),
SITAR_NUM_IRQS},
{{0x1, 0x0, 0x1, 0x1}, sitar_devs, ARRAY_SIZE(sitar_devs),
SITAR_NUM_IRQS},
{{0x2, 0x0, 0x1, 0x1}, sitar_devs, ARRAY_SIZE(sitar_devs),
SITAR_NUM_IRQS},
};
static void wcd9xxx_bring_up(struct wcd9xxx *wcd9xxx)
{
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x4);
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_CDC_CTL, 0);
usleep_range(5000, 5000);
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_CDC_CTL, 3);
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 3);
}
static void wcd9xxx_bring_down(struct wcd9xxx *wcd9xxx)
{
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x7);
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x6);
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0xe);
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x8);
}
static int wcd9xxx_reset(struct wcd9xxx *wcd9xxx)
{
int ret;
if (wcd9xxx->reset_gpio) {
ret = gpio_request(wcd9xxx->reset_gpio, "CDC_RESET");
if (ret) {
pr_err("%s: Failed to request gpio %d\n", __func__,
wcd9xxx->reset_gpio);
wcd9xxx->reset_gpio = 0;
return ret;
}
gpio_direction_output(wcd9xxx->reset_gpio, 0);
msleep(20);
gpio_direction_output(wcd9xxx->reset_gpio, 1);
msleep(20);
}
return 0;
}
static void wcd9xxx_free_reset(struct wcd9xxx *wcd9xxx)
{
if (wcd9xxx->reset_gpio) {
gpio_free(wcd9xxx->reset_gpio);
wcd9xxx->reset_gpio = 0;
}
}
static int wcd9xxx_check_codec_type(struct wcd9xxx *wcd9xxx,
struct mfd_cell **wcd9xxx_dev,
int *wcd9xxx_dev_size,
int *wcd9xxx_dev_num_irqs)
{
int i;
int ret;
i = WCD9XXX_A_CHIP_ID_BYTE_0;
while (i <= WCD9XXX_A_CHIP_ID_BYTE_3) {
ret = wcd9xxx_reg_read(wcd9xxx, i);
if (ret < 0)
goto exit;
wcd9xxx->idbyte[i-WCD9XXX_A_CHIP_ID_BYTE_0] = (u8)ret;
pr_debug("%s: wcd9xx read = %x, byte = %x\n", __func__, ret,
i);
i++;
}
/* Read codec version */
ret = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_VERSION);
if (ret < 0)
goto exit;
wcd9xxx->version = (u8)ret & 0x1F;
i = 0;
while (i < ARRAY_SIZE(wcd9xxx_codecs)) {
if ((wcd9xxx_codecs[i].byte[0] == wcd9xxx->idbyte[0]) &&
(wcd9xxx_codecs[i].byte[1] == wcd9xxx->idbyte[1]) &&
(wcd9xxx_codecs[i].byte[2] == wcd9xxx->idbyte[2]) &&
(wcd9xxx_codecs[i].byte[3] == wcd9xxx->idbyte[3])) {
pr_info("%s: codec is %s", __func__,
wcd9xxx_codecs[i].dev->name);
*wcd9xxx_dev = wcd9xxx_codecs[i].dev;
*wcd9xxx_dev_size = wcd9xxx_codecs[i].size;
*wcd9xxx_dev_num_irqs = wcd9xxx_codecs[i].num_irqs;
break;
}
i++;
}
if (*wcd9xxx_dev == NULL || *wcd9xxx_dev_size == 0)
ret = -ENODEV;
pr_info("%s: Read codec idbytes & version\n"
"byte_0[%08x] byte_1[%08x] byte_2[%08x]\n"
" byte_3[%08x] version = %x\n", __func__,
wcd9xxx->idbyte[0], wcd9xxx->idbyte[1],
wcd9xxx->idbyte[2], wcd9xxx->idbyte[3],
wcd9xxx->version);
exit:
return ret;
}
static int wcd9xxx_device_init(struct wcd9xxx *wcd9xxx)
{
int ret;
struct mfd_cell *wcd9xxx_dev = NULL;
int wcd9xxx_dev_size = 0;
mutex_init(&wcd9xxx->io_lock);
mutex_init(&wcd9xxx->xfer_lock);
mutex_init(&wcd9xxx->pm_lock);
wcd9xxx->wlock_holders = 0;
wcd9xxx->pm_state = WCD9XXX_PM_SLEEPABLE;
init_waitqueue_head(&wcd9xxx->pm_wq);
pm_qos_add_request(&wcd9xxx->pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
PM_QOS_DEFAULT_VALUE);
dev_set_drvdata(wcd9xxx->dev, wcd9xxx);
wcd9xxx_bring_up(wcd9xxx);
ret = wcd9xxx_check_codec_type(wcd9xxx, &wcd9xxx_dev, &wcd9xxx_dev_size,
&wcd9xxx->num_irqs);
if (ret < 0)
goto err_irq;
if (wcd9xxx->irq != -1) {
ret = wcd9xxx_irq_init(wcd9xxx);
if (ret) {
pr_err("IRQ initialization failed\n");
goto err;
}
}
ret = mfd_add_devices(wcd9xxx->dev, -1, wcd9xxx_dev, wcd9xxx_dev_size,
NULL, 0);
if (ret != 0) {
dev_err(wcd9xxx->dev, "Failed to add children: %d\n", ret);
goto err_irq;
}
return ret;
err_irq:
wcd9xxx_irq_exit(wcd9xxx);
err:
wcd9xxx_bring_down(wcd9xxx);
pm_qos_remove_request(&wcd9xxx->pm_qos_req);
mutex_destroy(&wcd9xxx->pm_lock);
mutex_destroy(&wcd9xxx->io_lock);
mutex_destroy(&wcd9xxx->xfer_lock);
return ret;
}
static void wcd9xxx_device_exit(struct wcd9xxx *wcd9xxx)
{
wcd9xxx_irq_exit(wcd9xxx);
wcd9xxx_bring_down(wcd9xxx);
wcd9xxx_free_reset(wcd9xxx);
mutex_destroy(&wcd9xxx->pm_lock);
pm_qos_remove_request(&wcd9xxx->pm_qos_req);
mutex_destroy(&wcd9xxx->io_lock);
mutex_destroy(&wcd9xxx->xfer_lock);
if (wcd9xxx_intf == WCD9XXX_INTERFACE_TYPE_SLIMBUS)
slim_remove_device(wcd9xxx->slim_slave);
kfree(wcd9xxx);
}
#ifdef CONFIG_DEBUG_FS
struct wcd9xxx *debugCodec;
static struct dentry *debugfs_wcd9xxx_dent;
static struct dentry *debugfs_peek;
static struct dentry *debugfs_poke;
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 (strict_strtoul(token, base, &param1[cnt]) != 0)
return -EINVAL;
token = strsep(&buf, " ");
} else
return -EINVAL;
}
return 0;
}
static ssize_t codec_debug_read(struct file *file, char __user *ubuf,
size_t count, loff_t *ppos)
{
char lbuf[8];
snprintf(lbuf, sizeof(lbuf), "0x%x\n", read_data);
return simple_read_from_buffer(ubuf, count, ppos, lbuf,
strnlen(lbuf, 7));
}
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 (!strncmp(access_str, "poke", 6)) {
/* 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 (!strncmp(access_str, "peek", 6)) {
/* 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;
}
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 int wcd9xxx_enable_supplies(struct wcd9xxx *wcd9xxx,
struct wcd9xxx_pdata *pdata)
{
int ret;
int i;
wcd9xxx->supplies = kzalloc(sizeof(struct regulator_bulk_data) *
ARRAY_SIZE(pdata->regulator),
GFP_KERNEL);
if (!wcd9xxx->supplies) {
ret = -ENOMEM;
goto err;
}
wcd9xxx->num_of_supplies = 0;
if (ARRAY_SIZE(pdata->regulator) > MAX_REGULATOR) {
pr_err("%s: Array Size out of bound\n", __func__);
ret = -EINVAL;
goto err;
}
for (i = 0; i < ARRAY_SIZE(pdata->regulator); i++) {
if (pdata->regulator[i].name) {
wcd9xxx->supplies[i].supply = pdata->regulator[i].name;
wcd9xxx->num_of_supplies++;
}
}
ret = regulator_bulk_get(wcd9xxx->dev, wcd9xxx->num_of_supplies,
wcd9xxx->supplies);
if (ret != 0) {
dev_err(wcd9xxx->dev, "Failed to get supplies: err = %d\n",
ret);
goto err_supplies;
}
for (i = 0; i < wcd9xxx->num_of_supplies; i++) {
ret = regulator_set_voltage(wcd9xxx->supplies[i].consumer,
pdata->regulator[i].min_uV, pdata->regulator[i].max_uV);
if (ret) {
pr_err("%s: Setting regulator voltage failed for "
"regulator %s err = %d\n", __func__,
wcd9xxx->supplies[i].supply, ret);
goto err_get;
}
ret = regulator_set_optimum_mode(wcd9xxx->supplies[i].consumer,
pdata->regulator[i].optimum_uA);
if (ret < 0) {
pr_err("%s: Setting regulator optimum mode failed for "
"regulator %s err = %d\n", __func__,
wcd9xxx->supplies[i].supply, ret);
goto err_get;
}
}
ret = regulator_bulk_enable(wcd9xxx->num_of_supplies,
wcd9xxx->supplies);
if (ret != 0) {
dev_err(wcd9xxx->dev, "Failed to enable supplies: err = %d\n",
ret);
goto err_configure;
}
return ret;
err_configure:
for (i = 0; i < wcd9xxx->num_of_supplies; i++) {
regulator_set_voltage(wcd9xxx->supplies[i].consumer, 0,
pdata->regulator[i].max_uV);
regulator_set_optimum_mode(wcd9xxx->supplies[i].consumer, 0);
}
err_get:
regulator_bulk_free(wcd9xxx->num_of_supplies, wcd9xxx->supplies);
err_supplies:
kfree(wcd9xxx->supplies);
err:
return ret;
}
static void wcd9xxx_disable_supplies(struct wcd9xxx *wcd9xxx,
struct wcd9xxx_pdata *pdata)
{
int i;
regulator_bulk_disable(wcd9xxx->num_of_supplies,
wcd9xxx->supplies);
for (i = 0; i < wcd9xxx->num_of_supplies; i++) {
regulator_set_voltage(wcd9xxx->supplies[i].consumer, 0,
pdata->regulator[i].max_uV);
regulator_set_optimum_mode(wcd9xxx->supplies[i].consumer, 0);
}
regulator_bulk_free(wcd9xxx->num_of_supplies, wcd9xxx->supplies);
kfree(wcd9xxx->supplies);
}
enum wcd9xxx_intf_status wcd9xxx_get_intf_type(void)
{
return wcd9xxx_intf;
}
EXPORT_SYMBOL_GPL(wcd9xxx_get_intf_type);
struct wcd9xxx_i2c *get_i2c_wcd9xxx_device_info(u16 reg)
{
u16 mask = 0x0f00;
int value = 0;
struct wcd9xxx_i2c *wcd9xxx = NULL;
value = ((reg & mask) >> 8) & 0x000f;
switch (value) {
case 0:
wcd9xxx = &wcd9xxx_modules[0];
break;
case 1:
wcd9xxx = &wcd9xxx_modules[1];
break;
case 2:
wcd9xxx = &wcd9xxx_modules[2];
break;
case 3:
wcd9xxx = &wcd9xxx_modules[3];
break;
default:
break;
}
return wcd9xxx;
}
int wcd9xxx_i2c_write_device(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;
wcd9xxx = get_i2c_wcd9xxx_device_info(reg);
if (wcd9xxx == NULL || wcd9xxx->client == NULL) {
pr_err("failed to get device info\n");
return -ENODEV;
}
reg_addr = (u8)reg;
msg = &wcd9xxx->xfer_msg[0];
msg->addr = wcd9xxx->client->addr;
msg->len = bytes + 1;
msg->flags = 0;
data[0] = reg;
data[1] = *value;
msg->buf = data;
ret = i2c_transfer(wcd9xxx->client->adapter, wcd9xxx->xfer_msg, 1);
/* Try again if the write fails */
if (ret != 1) {
ret = i2c_transfer(wcd9xxx->client->adapter,
wcd9xxx->xfer_msg, 1);
if (ret != 1) {
pr_err("failed to write the device\n");
return ret;
}
}
pr_debug("write sucess register = %x val = %x\n", reg, data[1]);
return 0;
}
int wcd9xxx_i2c_read_device(unsigned short reg,
int bytes, unsigned char *dest)
{
struct i2c_msg *msg;
int ret = 0;
u8 reg_addr = 0;
struct wcd9xxx_i2c *wcd9xxx;
u8 i = 0;
wcd9xxx = get_i2c_wcd9xxx_device_info(reg);
if (wcd9xxx == NULL || wcd9xxx->client == NULL) {
pr_err("failed to get device info\n");
return -ENODEV;
}
for (i = 0; i < bytes; i++) {
reg_addr = (u8)reg++;
msg = &wcd9xxx->xfer_msg[0];
msg->addr = wcd9xxx->client->addr;
msg->len = 1;
msg->flags = 0;
msg->buf = &reg_addr;
msg = &wcd9xxx->xfer_msg[1];
msg->addr = wcd9xxx->client->addr;
msg->len = 1;
msg->flags = I2C_M_RD;
msg->buf = dest++;
ret = i2c_transfer(wcd9xxx->client->adapter,
wcd9xxx->xfer_msg, 2);
/* Try again if read fails first time */
if (ret != 2) {
ret = i2c_transfer(wcd9xxx->client->adapter,
wcd9xxx->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(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(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 __devinit 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 i2c_mode = 0;
int wcd9xx_index = 0;
struct device *dev;
pr_debug("%s: interface status %d\n", __func__, wcd9xxx_intf);
if (wcd9xxx_intf == WCD9XXX_INTERFACE_TYPE_SLIMBUS) {
dev_dbg(&client->dev, "%s:Codec is detected in slimbus mode\n",
__func__);
return -ENODEV;
} else if (wcd9xxx_intf == 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 (wcd9xxx_intf == 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_pdata(&client->dev);
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 = kzalloc(sizeof(struct wcd9xxx), GFP_KERNEL);
if (wcd9xxx == NULL) {
pr_err("%s: error, allocation failed\n", __func__);
ret = -ENOMEM;
goto fail;
}
if (!pdata) {
dev_dbg(&client->dev, "no platform data?\n");
ret = -EINVAL;
goto fail;
}
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->reset_gpio = pdata->reset_gpio;
if (client->dev.of_node)
wcd9xxx->mclk_rate = pdata->mclk_rate;
ret = wcd9xxx_enable_supplies(wcd9xxx, pdata);
if (ret) {
pr_err("%s: Fail to enable Codec supplies\n",
__func__);
goto err_codec;
}
usleep_range(5, 5);
ret = wcd9xxx_reset(wcd9xxx);
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->irq = pdata->irq;
wcd9xxx->irq_base = pdata->irq_base;
}
ret = wcd9xxx_device_init(wcd9xxx);
if (ret) {
pr_err("%s: error, initializing device failed\n",
__func__);
goto err_device_init;
}
if ((wcd9xxx->idbyte[0] == 0x2) || (wcd9xxx->idbyte[0] == 0x1))
i2c_mode = TABLA_I2C_MODE;
else if (wcd9xxx->idbyte[0] == 0x0)
i2c_mode = SITAR_I2C_MODE;
ret = wcd9xxx_read(wcd9xxx, WCD9XXX_A_CHIP_STATUS, 1, &val, 0);
if ((ret < 0) || (val != i2c_mode))
pr_err("failed to read the wcd9xxx status ret = %d\n",
ret);
wcd9xxx_intf = WCD9XXX_INTERFACE_TYPE_I2C;
return ret;
} else
pr_err("%s: I2C probe in wrong state\n", __func__);
err_device_init:
wcd9xxx_free_reset(wcd9xxx);
err_supplies:
wcd9xxx_disable_supplies(wcd9xxx, pdata);
err_codec:
kfree(wcd9xxx);
fail:
return ret;
}
static int __devexit wcd9xxx_i2c_remove(struct i2c_client *client)
{
struct wcd9xxx *wcd9xxx;
struct wcd9xxx_pdata *pdata = client->dev.platform_data;
pr_debug("exit\n");
wcd9xxx = dev_get_drvdata(&client->dev);
wcd9xxx_disable_supplies(wcd9xxx, pdata);
wcd9xxx_device_exit(wcd9xxx);
return 0;
}
static int wcd9xxx_dt_parse_vreg_info(struct device *dev,
struct wcd9xxx_regulator *vreg, const char *vreg_name)
{
int len, ret = 0;
const __be32 *prop;
char prop_name[CODEC_DT_MAX_PROP_SIZE];
struct device_node *regnode = NULL;
u32 prop_val;
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, "%s-supply",
vreg_name);
regnode = of_parse_phandle(dev->of_node, prop_name, 0);
if (!regnode) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
vreg->name = vreg_name;
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,%s-voltage", vreg_name);
prop = of_get_property(dev->of_node, prop_name, &len);
if (!prop || (len != (2 * sizeof(__be32)))) {
dev_err(dev, "%s %s property\n",
prop ? "invalid format" : "no", prop_name);
return -ENODEV;
} else {
vreg->min_uV = be32_to_cpup(&prop[0]);
vreg->max_uV = be32_to_cpup(&prop[1]);
}
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,%s-current", vreg_name);
ret = of_property_read_u32(dev->of_node, prop_name, &prop_val);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
vreg->optimum_uA = prop_val;
dev_info(dev, "%s: vol=[%d %d]uV, curr=[%d]uA\n", vreg->name,
vreg->min_uV, vreg->max_uV, vreg->optimum_uA);
return 0;
}
static int wcd9xxx_dt_parse_micbias_info(struct device *dev,
struct wcd9xxx_micbias_setting *micbias)
{
int ret = 0;
char prop_name[CODEC_DT_MAX_PROP_SIZE];
u32 prop_val;
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,cdc-micbias-ldoh-v");
ret = of_property_read_u32(dev->of_node, prop_name, &prop_val);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
micbias->ldoh_v = (u8)prop_val;
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,cdc-micbias-cfilt1-mv");
ret = of_property_read_u32(dev->of_node, prop_name,
&micbias->cfilt1_mv);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,cdc-micbias-cfilt2-mv");
ret = of_property_read_u32(dev->of_node, prop_name,
&micbias->cfilt2_mv);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,cdc-micbias-cfilt3-mv");
ret = of_property_read_u32(dev->of_node, prop_name,
&micbias->cfilt3_mv);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,cdc-micbias1-cfilt-sel");
ret = of_property_read_u32(dev->of_node, prop_name, &prop_val);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
micbias->bias1_cfilt_sel = (u8)prop_val;
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,cdc-micbias2-cfilt-sel");
ret = of_property_read_u32(dev->of_node, prop_name, &prop_val);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
micbias->bias2_cfilt_sel = (u8)prop_val;
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,cdc-micbias3-cfilt-sel");
ret = of_property_read_u32(dev->of_node, prop_name, &prop_val);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
micbias->bias3_cfilt_sel = (u8)prop_val;
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE,
"qcom,cdc-micbias4-cfilt-sel");
ret = of_property_read_u32(dev->of_node, prop_name, &prop_val);
if (ret) {
dev_err(dev, "Looking up %s property in node %s failed",
prop_name, dev->of_node->full_name);
return -ENODEV;
}
micbias->bias4_cfilt_sel = (u8)prop_val;
/* micbias external cap */
micbias->bias1_cap_mode =
(of_property_read_bool(dev->of_node, "qcom,cdc-micbias1-ext-cap") ?
MICBIAS_EXT_BYP_CAP : MICBIAS_NO_EXT_BYP_CAP);
micbias->bias2_cap_mode =
(of_property_read_bool(dev->of_node, "qcom,cdc-micbias2-ext-cap") ?
MICBIAS_EXT_BYP_CAP : MICBIAS_NO_EXT_BYP_CAP);
micbias->bias3_cap_mode =
(of_property_read_bool(dev->of_node, "qcom,cdc-micbias3-ext-cap") ?
MICBIAS_EXT_BYP_CAP : MICBIAS_NO_EXT_BYP_CAP);
micbias->bias4_cap_mode =
(of_property_read_bool(dev->of_node, "qcom,cdc-micbias4-ext-cap") ?
MICBIAS_EXT_BYP_CAP : MICBIAS_NO_EXT_BYP_CAP);
dev_dbg(dev, "ldoh_v %u cfilt1_mv %u cfilt2_mv %u cfilt3_mv %u",
(u32)micbias->ldoh_v, (u32)micbias->cfilt1_mv,
(u32)micbias->cfilt2_mv, (u32)micbias->cfilt3_mv);
dev_dbg(dev, "bias1_cfilt_sel %u bias2_cfilt_sel %u\n",
(u32)micbias->bias1_cfilt_sel, (u32)micbias->bias2_cfilt_sel);
dev_dbg(dev, "bias3_cfilt_sel %u bias4_cfilt_sel %u\n",
(u32)micbias->bias3_cfilt_sel, (u32)micbias->bias4_cfilt_sel);
dev_dbg(dev, "bias1_ext_cap %d bias2_ext_cap %d\n",
micbias->bias1_cap_mode, micbias->bias2_cap_mode);
dev_dbg(dev, "bias3_ext_cap %d bias4_ext_cap %d\n",
micbias->bias3_cap_mode, micbias->bias4_cap_mode);
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 struct wcd9xxx_pdata *wcd9xxx_populate_dt_pdata(struct device *dev)
{
struct wcd9xxx_pdata *pdata;
int ret, i;
char **codec_supplies;
u32 num_of_supplies = 0;
u32 mclk_rate = 0;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata) {
dev_err(dev, "could not allocate memory for platform data\n");
return NULL;
}
if (!strcmp(dev_name(dev), "taiko-slim-pgd") ||
(!strcmp(dev_name(dev), WCD9XXX_I2C_GSBI_SLAVE_ID))) {
codec_supplies = taiko_supplies;
num_of_supplies = ARRAY_SIZE(taiko_supplies);
} else {
dev_err(dev, "%s unsupported device %s\n",
__func__, dev_name(dev));
goto err;
}
if (num_of_supplies > ARRAY_SIZE(pdata->regulator)) {
dev_err(dev, "%s: Num of supplies %u > max supported %u\n",
__func__, num_of_supplies, ARRAY_SIZE(pdata->regulator));
goto err;
}
for (i = 0; i < num_of_supplies; i++) {
ret = wcd9xxx_dt_parse_vreg_info(dev, &pdata->regulator[i],
codec_supplies[i]);
if (ret)
goto err;
}
ret = wcd9xxx_dt_parse_micbias_info(dev, &pdata->micbias);
if (ret)
goto err;
pdata->reset_gpio = of_get_named_gpio(dev->of_node,
"qcom,cdc-reset-gpio", 0);
if (pdata->reset_gpio < 0) {
dev_err(dev, "Looking up %s property in node %s failed %d\n",
"qcom, cdc-reset-gpio", dev->of_node->full_name,
pdata->reset_gpio);
goto err;
}
dev_dbg(dev, "%s: reset gpio %d", __func__, pdata->reset_gpio);
ret = of_property_read_u32(dev->of_node,
"qcom,cdc-mclk-clk-rate",
&mclk_rate);
if (ret) {
dev_err(dev, "Looking up %s property in\n"
"node %s failed",
"qcom,cdc-mclk-clk-rate",
dev->of_node->full_name);
devm_kfree(dev, pdata);
ret = -EINVAL;
goto err;
}
pdata->mclk_rate = mclk_rate;
return pdata;
err:
devm_kfree(dev, pdata);
return NULL;
}
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, 1000);
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;
int ret = 0;
if (wcd9xxx_intf == WCD9XXX_INTERFACE_TYPE_I2C) {
dev_dbg(&slim->dev, "%s:Codec is detected in I2C mode\n",
__func__);
return -ENODEV;
}
if (slim->dev.of_node) {
dev_info(&slim->dev, "Platform data from device tree\n");
pdata = wcd9xxx_populate_dt_pdata(&slim->dev);
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;
}
wcd9xxx = kzalloc(sizeof(struct wcd9xxx), GFP_KERNEL);
if (wcd9xxx == NULL) {
pr_err("%s: error, allocation failed\n", __func__);
ret = -ENOMEM;
goto err;
}
if (!slim->ctrl) {
pr_err("Error, no SLIMBUS control data\n");
ret = -EINVAL;
goto err_codec;
}
wcd9xxx->slim = slim;
slim_set_clientdata(slim, wcd9xxx);
wcd9xxx->reset_gpio = pdata->reset_gpio;
wcd9xxx->dev = &slim->dev;
wcd9xxx->mclk_rate = pdata->mclk_rate;
ret = wcd9xxx_enable_supplies(wcd9xxx, pdata);
if (ret)
goto err_codec;
usleep_range(5, 5);
ret = wcd9xxx_reset(wcd9xxx);
if (ret) {
pr_err("%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) {
pr_err("%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->irq = pdata->irq;
wcd9xxx->irq_base = pdata->irq_base;
}
ret = slim_add_device(slim->ctrl, wcd9xxx->slim_slave);
if (ret) {
pr_err("%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) {
pr_err("%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_intf = WCD9XXX_INTERFACE_TYPE_SLIMBUS;
ret = wcd9xxx_device_init(wcd9xxx);
if (ret) {
pr_err("%s: error, initializing device failed\n", __func__);
goto err_slim_add;
}
#ifdef CONFIG_DEBUG_FS
debugCodec = wcd9xxx;
debugfs_wcd9xxx_dent = debugfs_create_dir
("wcd9310_slimbus_interface_device", 0);
if (!IS_ERR(debugfs_wcd9xxx_dent)) {
debugfs_peek = debugfs_create_file("peek",
S_IFREG | S_IRUGO, debugfs_wcd9xxx_dent,
(void *) "peek", &codec_debug_ops);
debugfs_poke = debugfs_create_file("poke",
S_IFREG | S_IRUGO, debugfs_wcd9xxx_dent,
(void *) "poke", &codec_debug_ops);
}
#endif
return ret;
err_slim_add:
slim_remove_device(wcd9xxx->slim_slave);
err_reset:
wcd9xxx_free_reset(wcd9xxx);
err_supplies:
wcd9xxx_disable_supplies(wcd9xxx, pdata);
err_codec:
kfree(wcd9xxx);
err:
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(debugfs_peek);
debugfs_remove(debugfs_poke);
debugfs_remove(debugfs_wcd9xxx_dent);
#endif
wcd9xxx = slim_get_devicedata(pdev);
wcd9xxx_deinit_slimslave(wcd9xxx);
slim_remove_device(wcd9xxx->slim_slave);
wcd9xxx_disable_supplies(wcd9xxx, pdata);
wcd9xxx_device_exit(wcd9xxx);
return 0;
}
static int wcd9xxx_resume(struct wcd9xxx *wcd9xxx)
{
int ret = 0;
pr_debug("%s: enter\n", __func__);
mutex_lock(&wcd9xxx->pm_lock);
if (wcd9xxx->pm_state == WCD9XXX_PM_ASLEEP) {
pr_debug("%s: resuming system, state %d, wlock %d\n", __func__,
wcd9xxx->pm_state, wcd9xxx->wlock_holders);
wcd9xxx->pm_state = WCD9XXX_PM_SLEEPABLE;
} else {
pr_warn("%s: system is already awake, state %d wlock %d\n",
__func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders);
}
mutex_unlock(&wcd9xxx->pm_lock);
wake_up_all(&wcd9xxx->pm_wq);
return ret;
}
static int wcd9xxx_slim_resume(struct slim_device *sldev)
{
struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev);
return wcd9xxx_resume(wcd9xxx);
}
static int wcd9xxx_i2c_resume(struct i2c_client *i2cdev)
{
struct wcd9xxx *wcd9xxx = dev_get_drvdata(&i2cdev->dev);
if (wcd9xxx)
return wcd9xxx_resume(wcd9xxx);
else
return 0;
}
static int wcd9xxx_suspend(struct wcd9xxx *wcd9xxx, pm_message_t pmesg)
{
int ret = 0;
pr_debug("%s: enter\n", __func__);
/*
* pm_qos_update_request() can be called after this suspend chain call
* started. thus suspend can be called while lock is being held
*/
mutex_lock(&wcd9xxx->pm_lock);
if (wcd9xxx->pm_state == WCD9XXX_PM_SLEEPABLE) {
pr_debug("%s: suspending system, state %d, wlock %d\n",
__func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders);
wcd9xxx->pm_state = WCD9XXX_PM_ASLEEP;
} else if (wcd9xxx->pm_state == WCD9XXX_PM_AWAKE) {
/* unlock to wait for pm_state == WCD9XXX_PM_SLEEPABLE
* then set to WCD9XXX_PM_ASLEEP */
pr_debug("%s: waiting to suspend system, state %d, wlock %d\n",
__func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders);
mutex_unlock(&wcd9xxx->pm_lock);
if (!(wait_event_timeout(wcd9xxx->pm_wq,
wcd9xxx_pm_cmpxchg(wcd9xxx,
WCD9XXX_PM_SLEEPABLE,
WCD9XXX_PM_ASLEEP) ==
WCD9XXX_PM_SLEEPABLE,
HZ))) {
pr_debug("%s: suspend failed state %d, wlock %d\n",
__func__, wcd9xxx->pm_state,
wcd9xxx->wlock_holders);
ret = -EBUSY;
} else {
pr_debug("%s: done, state %d, wlock %d\n", __func__,
wcd9xxx->pm_state, wcd9xxx->wlock_holders);
}
mutex_lock(&wcd9xxx->pm_lock);
} else if (wcd9xxx->pm_state == WCD9XXX_PM_ASLEEP) {
pr_warn("%s: system is already suspended, state %d, wlock %dn",
__func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders);
}
mutex_unlock(&wcd9xxx->pm_lock);
return ret;
}
static int wcd9xxx_slim_suspend(struct slim_device *sldev, pm_message_t pmesg)
{
struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev);
return wcd9xxx_suspend(wcd9xxx, pmesg);
}
static int wcd9xxx_i2c_suspend(struct i2c_client *i2cdev, pm_message_t pmesg)
{
struct wcd9xxx *wcd9xxx = dev_get_drvdata(&i2cdev->dev);
if (wcd9xxx)
return wcd9xxx_suspend(wcd9xxx, pmesg);
else
return 0;
}
static const struct slim_device_id sitar_slimtest_id[] = {
{"sitar-slim", 0},
{}
};
static struct slim_driver sitar_slim_driver = {
.driver = {
.name = "sitar-slim",
.owner = THIS_MODULE,
},
.probe = wcd9xxx_slim_probe,
.remove = wcd9xxx_slim_remove,
.id_table = sitar_slimtest_id,
.resume = wcd9xxx_slim_resume,
.suspend = wcd9xxx_slim_suspend,
};
static const struct slim_device_id sitar1p1_slimtest_id[] = {
{"sitar1p1-slim", 0},
{}
};
static struct slim_driver sitar1p1_slim_driver = {
.driver = {
.name = "sitar1p1-slim",
.owner = THIS_MODULE,
},
.probe = wcd9xxx_slim_probe,
.remove = wcd9xxx_slim_remove,
.id_table = sitar1p1_slimtest_id,
.resume = wcd9xxx_slim_resume,
.suspend = wcd9xxx_slim_suspend,
};
static const struct slim_device_id slimtest_id[] = {
{"tabla-slim", 0},
{}
};
static struct slim_driver tabla_slim_driver = {
.driver = {
.name = "tabla-slim",
.owner = THIS_MODULE,
},
.probe = wcd9xxx_slim_probe,
.remove = wcd9xxx_slim_remove,
.id_table = slimtest_id,
.resume = wcd9xxx_slim_resume,
.suspend = wcd9xxx_slim_suspend,
};
static const struct slim_device_id slimtest2x_id[] = {
{"tabla2x-slim", 0},
{}
};
static struct slim_driver tabla2x_slim_driver = {
.driver = {
.name = "tabla2x-slim",
.owner = THIS_MODULE,
},
.probe = wcd9xxx_slim_probe,
.remove = wcd9xxx_slim_remove,
.id_table = slimtest2x_id,
.resume = wcd9xxx_slim_resume,
.suspend = wcd9xxx_slim_suspend,
};
static const struct slim_device_id taiko_slimtest_id[] = {
{"taiko-slim-pgd", 0},
{}
};
static struct slim_driver taiko_slim_driver = {
.driver = {
.name = "taiko-slim",
.owner = THIS_MODULE,
},
.probe = wcd9xxx_slim_probe,
.remove = wcd9xxx_slim_remove,
.id_table = taiko_slimtest_id,
.resume = wcd9xxx_slim_resume,
.suspend = wcd9xxx_slim_suspend,
};
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 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 struct i2c_driver tabla_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "tabla-i2c-core",
},
.id_table = tabla_id_table,
.probe = wcd9xxx_i2c_probe,
.remove = __devexit_p(wcd9xxx_i2c_remove),
.resume = wcd9xxx_i2c_resume,
.suspend = wcd9xxx_i2c_suspend,
};
static struct i2c_driver wcd9xxx_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "wcd9xxx-i2c-core",
},
.id_table = wcd9xxx_id_table,
.probe = wcd9xxx_i2c_probe,
.remove = __devexit_p(wcd9xxx_i2c_remove),
.resume = wcd9xxx_i2c_resume,
.suspend = wcd9xxx_i2c_suspend,
};
static int __init wcd9xxx_init(void)
{
int ret1, ret2, ret3, ret4, ret5, ret6, ret7;
wcd9xxx_intf = WCD9XXX_INTERFACE_TYPE_PROBING;
ret1 = slim_driver_register(&tabla_slim_driver);
if (ret1 != 0)
pr_err("Failed to register tabla SB driver: %d\n", ret1);
ret2 = slim_driver_register(&tabla2x_slim_driver);
if (ret2 != 0)
pr_err("Failed to register tabla2x SB driver: %d\n", ret2);
ret3 = i2c_add_driver(&tabla_i2c_driver);
if (ret3 != 0)
pr_err("failed to add the tabla2x I2C driver\n");
ret4 = slim_driver_register(&sitar_slim_driver);
if (ret4 != 0)
pr_err("Failed to register sitar SB driver: %d\n", ret4);
ret5 = slim_driver_register(&sitar1p1_slim_driver);
if (ret5 != 0)
pr_err("Failed to register sitar SB driver: %d\n", ret5);
ret6 = slim_driver_register(&taiko_slim_driver);
if (ret6 != 0)
pr_err("Failed to register taiko SB driver: %d\n", ret6);
ret7 = i2c_add_driver(&wcd9xxx_i2c_driver);
if (ret7 != 0)
pr_err("failed to add the wcd9xxx I2C driver\n");
return (ret1 && ret2 && ret3 && ret4 && ret5 && ret6 && ret7) ? -1 : 0;
}
module_init(wcd9xxx_init);
static void __exit wcd9xxx_exit(void)
{
}
module_exit(wcd9xxx_exit);
MODULE_DESCRIPTION("Codec core driver");
MODULE_VERSION("1.0");
MODULE_LICENSE("GPL v2");