| /* 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/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 |
| |
| struct wcd9xxx_i2c { |
| struct i2c_client *client; |
| struct i2c_msg xfer_msg[2]; |
| struct mutex xfer_lock; |
| int mod_id; |
| }; |
| |
| 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 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, 1); |
| msleep(20); |
| 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_device_init(struct wcd9xxx *wcd9xxx, int irq) |
| { |
| 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); |
| |
| if (wcd9xxx->irq != -1) { |
| ret = wcd9xxx_irq_init(wcd9xxx); |
| if (ret) { |
| pr_err("IRQ initialization failed\n"); |
| goto err; |
| } |
| } |
| |
| wcd9xxx->idbyte_0 = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_ID_BYTE_0); |
| wcd9xxx->idbyte_1 = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_ID_BYTE_1); |
| wcd9xxx->idbyte_2 = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_ID_BYTE_2); |
| wcd9xxx->idbyte_3 = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_ID_BYTE_3); |
| |
| wcd9xxx->version = wcd9xxx_reg_read(wcd9xxx, |
| WCD9XXX_A_CHIP_VERSION) & 0x1F; |
| pr_info("%s : Codec version %u initialized\n", |
| __func__, wcd9xxx->version); |
| pr_info("idbyte_0[%08x] idbyte_1[%08x] idbyte_2[%08x] idbyte_3[%08x]\n", |
| wcd9xxx->idbyte_0, wcd9xxx->idbyte_1, |
| wcd9xxx->idbyte_2, wcd9xxx->idbyte_3); |
| |
| if (wcd9xxx->idbyte_0 == 0x2 && wcd9xxx->idbyte_1 == 0x0 && |
| wcd9xxx->idbyte_2 == 0x0 && wcd9xxx->idbyte_3 == 0x1) { |
| wcd9xxx_dev = tabla_devs; |
| wcd9xxx_dev_size = ARRAY_SIZE(tabla_devs); |
| } else if (wcd9xxx->idbyte_0 == 0x1 && wcd9xxx->idbyte_1 == 0x0 && |
| wcd9xxx->idbyte_2 == 0x0 && wcd9xxx->idbyte_3 == 0x1) { |
| wcd9xxx_dev = tabla1x_devs; |
| wcd9xxx_dev_size = ARRAY_SIZE(tabla1x_devs); |
| } else if (wcd9xxx->idbyte_0 == 0x0 && wcd9xxx->idbyte_1 == 0x0 && |
| wcd9xxx->idbyte_2 == 0x2 && wcd9xxx->idbyte_3 == 0x1) { |
| wcd9xxx_dev = taiko_devs; |
| wcd9xxx_dev_size = ARRAY_SIZE(taiko_devs); |
| } else if ((wcd9xxx->idbyte_0 == 0x0 && wcd9xxx->idbyte_1 == 0x0 && |
| wcd9xxx->idbyte_2 == 0x0 && wcd9xxx->idbyte_3 == 0x1) || |
| (wcd9xxx->idbyte_0 == 0x1 && wcd9xxx->idbyte_1 == 0x0 && |
| wcd9xxx->idbyte_2 == 0x1 && wcd9xxx->idbyte_3 == 0x1)) { |
| wcd9xxx_dev = sitar_devs; |
| wcd9xxx_dev_size = ARRAY_SIZE(sitar_devs); |
| } |
| 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, ¶m1[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; |
| 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); |
| } |
| |
| int 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 = ®_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 __devinit wcd9xxx_i2c_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct wcd9xxx *wcd9xxx; |
| struct wcd9xxx_pdata *pdata; |
| int val = 0; |
| int ret = 0; |
| int i2c_mode = 0; |
| static int device_id; |
| |
| pr_info("%s\n", __func__); |
| if (wcd9xxx_intf == WCD9XXX_INTERFACE_TYPE_SLIMBUS) { |
| pr_info("tabla card is already detected in slimbus mode\n"); |
| return -ENODEV; |
| } |
| pdata = client->dev.platform_data; |
| if (device_id > 0) { |
| wcd9xxx_modules[device_id++].client = client; |
| pr_info("probe for other slaves devices of tabla\n"); |
| return ret; |
| } |
| |
| 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; |
| 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; |
| } |
| wcd9xxx_modules[device_id++].client = client; |
| |
| wcd9xxx->read_dev = wcd9xxx_i2c_read; |
| wcd9xxx->write_dev = wcd9xxx_i2c_write; |
| wcd9xxx->irq = pdata->irq; |
| wcd9xxx->irq_base = pdata->irq_base; |
| |
| ret = wcd9xxx_device_init(wcd9xxx, wcd9xxx->irq); |
| 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; |
| 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; |
| } |
| |
| #define CODEC_DT_MAX_PROP_SIZE 40 |
| 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; |
| |
| 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); |
| |
| 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 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 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; |
| |
| 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")) { |
| 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; |
| } |
| pdata->irq = -1; |
| |
| ret = wcd9xxx_dt_parse_slim_interface_dev_info(dev, |
| &pdata->slimbus_slave_device); |
| if (ret) |
| goto err; |
| 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 (slim->dev.of_node) { |
| dev_info(&slim->dev, "Platform data from device tree\n"); |
| pdata = wcd9xxx_populate_dt_pdata(&slim->dev); |
| 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; |
| |
| 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->irq = pdata->irq; |
| wcd9xxx->irq_base = pdata->irq_base; |
| wcd9xxx_pgd_la = wcd9xxx->slim->laddr; |
| |
| if (pdata->num_irqs < TABLA_NUM_IRQS) |
| pr_warn("%s: Not enough interrupt lines allocated\n", __func__); |
| |
| wcd9xxx->slim_slave = &pdata->slimbus_slave_device; |
| |
| 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, wcd9xxx->irq); |
| if (ret) { |
| pr_err("%s: error, initializing device failed\n", __func__); |
| goto err_slim_add; |
| } |
| |
| wcd9xxx_init_slimslave(wcd9xxx, wcd9xxx_pgd_la); |
| |
| #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, |
| }; |
| |
| #define WCD9XXX_I2C_TOP_LEVEL 0 |
| #define WCD9XXX_I2C_ANALOG 1 |
| #define WCD9XXX_I2C_DIGITAL_1 2 |
| #define WCD9XXX_I2C_DIGITAL_2 3 |
| |
| 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 int __init wcd9xxx_init(void) |
| { |
| int ret1, ret2, ret3, ret4, ret5, ret6; |
| |
| 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 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); |
| |
| return (ret1 && ret2 && ret3 && ret4 && ret5 && ret6) ? -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"); |