| /* Copyright (c) 2011-2018, 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/delay.h> |
| #include <linux/gpio.h> |
| #include <linux/debugfs.h> |
| #include <linux/i2c.h> |
| #include <linux/regmap.h> |
| #include <linux/mfd/wcd9xxx/wcd9xxx_registers.h> |
| #include <sound/soc.h> |
| #include "core.h" |
| #include "pdata.h" |
| #include "msm-cdc-pinctrl.h" |
| #include "msm-cdc-supply.h" |
| #include "wcd9xxx-irq.h" |
| #include "wcd9xxx-utils.h" |
| #include "wcd9xxx-regmap.h" |
| #include "wcd9xxx-slimslave.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 5 |
| |
| #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, |
| [WCD9360] = WCD9360, |
| }; |
| |
| static const struct of_device_id wcd9xxx_of_match[] = { |
| { .compatible = "qcom,tavil-i2c", |
| .data = (void *)&wcd9xxx_cdc_types[WCD934X]}, |
| { .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 = %d\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 = %d\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 || |
| wcd9xxx->type == WCD9360) { |
| ret = wcd9xxx_page_write(wcd9xxx, ®); |
| 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 = %d\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 = %d\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, ®); |
| 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); |
| mfd_remove_devices(wcd9xxx->dev); |
| 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, ¶m1[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, ¶m, 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 = ®_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_dbg(&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 || |
| wcd9xxx->type == WCD9360) |
| 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; |
| } |
| |
| dev_info(wcd9xxx->dev, "%s: device reset, dev_up = %d\n", |
| __func__, wcd9xxx->dev_up); |
| if (wcd9xxx->dev_up) |
| return 0; |
| |
| mutex_lock(&wcd9xxx->reset_lock); |
| 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 = %d\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; |
| } |
| |
| dev_info(wcd9xxx->dev, "%s: device down, dev_up = %d\n", |
| __func__, wcd9xxx->dev_up); |
| if (!wcd9xxx->dev_up) |
| return 0; |
| |
| wcd9xxx->dev_up = false; |
| |
| mutex_lock(&wcd9xxx->reset_lock); |
| if (wcd9xxx->dev_down) |
| wcd9xxx->dev_down(wcd9xxx); |
| wcd9xxx_irq_exit(&wcd9xxx->core_res); |
| wcd9xxx_reset_low(wcd9xxx->dev); |
| 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}, |
| {"pahu-slim-pgd", WCD9360}, |
| {} |
| }; |
| |
| 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 tavil_id_table[] = { |
| {"tavil-i2c", 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, |
| }; |
| |
| static struct i2c_driver wcd934x_i2c_driver = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "tavil-i2c-core", |
| .pm = &wcd9xxx_i2c_pm_ops, |
| }, |
| .id_table = tavil_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]); |
| |
| ret[4] = i2c_add_driver(&wcd934x_i2c_driver); |
| if (ret[4]) |
| pr_err("%s: Failed to add the wcd934x I2C driver: %d\n", |
| __func__, ret[4]); |
| |
| 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); |
| i2c_del_driver(&wcd934x_i2c_driver); |
| slim_driver_unregister(&wcd_slim_driver); |
| } |
| |
| MODULE_DESCRIPTION("Codec core driver"); |
| MODULE_LICENSE("GPL v2"); |