Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 1 | /* |
Bala Kishore Pati | da9885f | 2018-05-18 21:42:31 +0530 | [diff] [blame] | 2 | * Copyright (c) 2015, 2017-2018 The Linux Foundation. All rights reserved. |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | */ |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/ioctl.h> |
| 18 | #include <linux/bitops.h> |
| 19 | #include <sound/hwdep.h> |
| 20 | #include <sound/msmcal-hwdep.h> |
| 21 | #include <sound/soc.h> |
| 22 | #include "wcdcal-hwdep.h" |
| 23 | |
| 24 | const int cal_size_info[WCD9XXX_MAX_CAL] = { |
| 25 | [WCD9XXX_ANC_CAL] = 16384, |
| 26 | [WCD9XXX_MBHC_CAL] = 4096, |
| 27 | [WCD9XXX_MAD_CAL] = 4096, |
| 28 | [WCD9XXX_VBAT_CAL] = 72, |
Bala Kishore Pati | da9885f | 2018-05-18 21:42:31 +0530 | [diff] [blame] | 29 | [BG_CODEC_MIC_CAL] = 20, |
| 30 | [BG_CODEC_SPEAKER_CAL] = 3077, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 31 | }; |
| 32 | |
| 33 | const char *cal_name_info[WCD9XXX_MAX_CAL] = { |
| 34 | [WCD9XXX_ANC_CAL] = "anc", |
| 35 | [WCD9XXX_MBHC_CAL] = "mbhc", |
| 36 | [WCD9XXX_MAD_CAL] = "mad", |
| 37 | [WCD9XXX_VBAT_CAL] = "vbat", |
Bala Kishore Pati | da9885f | 2018-05-18 21:42:31 +0530 | [diff] [blame] | 38 | [BG_CODEC_MIC_CAL] = "bgmic", |
| 39 | [BG_CODEC_SPEAKER_CAL] = "bgspk", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 40 | }; |
| 41 | |
| 42 | struct firmware_cal *wcdcal_get_fw_cal(struct fw_info *fw_data, |
| 43 | enum wcd_cal_type type) |
| 44 | { |
| 45 | if (!fw_data) { |
| 46 | pr_err("%s: fw_data is NULL\n", __func__); |
| 47 | return NULL; |
| 48 | } |
| 49 | if (type >= WCD9XXX_MAX_CAL || |
| 50 | type < WCD9XXX_MIN_CAL) { |
| 51 | pr_err("%s: wrong cal type sent %d\n", __func__, type); |
| 52 | return NULL; |
| 53 | } |
| 54 | mutex_lock(&fw_data->lock); |
| 55 | if (!test_bit(WCDCAL_RECIEVED, |
| 56 | &fw_data->wcdcal_state[type])) { |
| 57 | pr_err("%s: cal not sent by userspace %d\n", |
| 58 | __func__, type); |
| 59 | mutex_unlock(&fw_data->lock); |
| 60 | return NULL; |
| 61 | } |
| 62 | mutex_unlock(&fw_data->lock); |
| 63 | return fw_data->fw[type]; |
| 64 | } |
| 65 | EXPORT_SYMBOL(wcdcal_get_fw_cal); |
| 66 | |
| 67 | static int wcdcal_hwdep_ioctl_shared(struct snd_hwdep *hw, |
| 68 | struct wcdcal_ioctl_buffer fw_user) |
| 69 | { |
| 70 | struct fw_info *fw_data = hw->private_data; |
| 71 | struct firmware_cal **fw = fw_data->fw; |
| 72 | void *data; |
| 73 | |
| 74 | if (!test_bit(fw_user.cal_type, fw_data->cal_bit)) { |
| 75 | pr_err("%s: codec didn't set this %d!!\n", |
| 76 | __func__, fw_user.cal_type); |
| 77 | return -EFAULT; |
| 78 | } |
| 79 | if (fw_user.cal_type >= WCD9XXX_MAX_CAL || |
| 80 | fw_user.cal_type < WCD9XXX_MIN_CAL) { |
| 81 | pr_err("%s: wrong cal type sent %d\n", |
| 82 | __func__, fw_user.cal_type); |
| 83 | return -EFAULT; |
| 84 | } |
| 85 | if (fw_user.size > cal_size_info[fw_user.cal_type] || |
| 86 | fw_user.size <= 0) { |
| 87 | pr_err("%s: incorrect firmware size %d for %s\n", |
| 88 | __func__, fw_user.size, |
| 89 | cal_name_info[fw_user.cal_type]); |
| 90 | return -EFAULT; |
| 91 | } |
| 92 | data = fw[fw_user.cal_type]->data; |
| 93 | if (copy_from_user(data, fw_user.buffer, fw_user.size)) |
| 94 | return -EFAULT; |
| 95 | fw[fw_user.cal_type]->size = fw_user.size; |
| 96 | mutex_lock(&fw_data->lock); |
| 97 | set_bit(WCDCAL_RECIEVED, &fw_data->wcdcal_state[fw_user.cal_type]); |
| 98 | mutex_unlock(&fw_data->lock); |
| 99 | return 0; |
| 100 | } |
| 101 | |
| 102 | #ifdef CONFIG_COMPAT |
| 103 | struct wcdcal_ioctl_buffer32 { |
| 104 | u32 size; |
| 105 | compat_uptr_t buffer; |
| 106 | enum wcd_cal_type cal_type; |
| 107 | }; |
| 108 | |
| 109 | enum { |
| 110 | SNDRV_CTL_IOCTL_HWDEP_CAL_TYPE32 = |
| 111 | _IOW('U', 0x1, struct wcdcal_ioctl_buffer32), |
| 112 | }; |
| 113 | |
| 114 | static int wcdcal_hwdep_ioctl_compat(struct snd_hwdep *hw, struct file *file, |
| 115 | unsigned int cmd, unsigned long arg) |
| 116 | { |
| 117 | struct wcdcal_ioctl_buffer __user *argp = (void __user *)arg; |
| 118 | struct wcdcal_ioctl_buffer32 fw_user32; |
| 119 | struct wcdcal_ioctl_buffer fw_user_compat; |
| 120 | |
| 121 | if (cmd != SNDRV_CTL_IOCTL_HWDEP_CAL_TYPE32) { |
| 122 | pr_err("%s: wrong ioctl command sent %u!\n", __func__, cmd); |
| 123 | return -ENOIOCTLCMD; |
| 124 | } |
| 125 | if (copy_from_user(&fw_user32, argp, sizeof(fw_user32))) { |
| 126 | pr_err("%s: failed to copy\n", __func__); |
| 127 | return -EFAULT; |
| 128 | } |
| 129 | fw_user_compat.size = fw_user32.size; |
| 130 | fw_user_compat.buffer = compat_ptr(fw_user32.buffer); |
| 131 | fw_user_compat.cal_type = fw_user32.cal_type; |
| 132 | return wcdcal_hwdep_ioctl_shared(hw, fw_user_compat); |
| 133 | } |
| 134 | #else |
| 135 | #define wcdcal_hwdep_ioctl_compat NULL |
| 136 | #endif |
| 137 | |
| 138 | static int wcdcal_hwdep_ioctl(struct snd_hwdep *hw, struct file *file, |
| 139 | unsigned int cmd, unsigned long arg) |
| 140 | { |
| 141 | struct wcdcal_ioctl_buffer __user *argp = (void __user *)arg; |
| 142 | struct wcdcal_ioctl_buffer fw_user; |
| 143 | |
| 144 | if (cmd != SNDRV_CTL_IOCTL_HWDEP_CAL_TYPE) { |
| 145 | pr_err("%s: wrong ioctl command sent %d!\n", __func__, cmd); |
| 146 | return -ENOIOCTLCMD; |
| 147 | } |
| 148 | if (copy_from_user(&fw_user, argp, sizeof(fw_user))) { |
| 149 | pr_err("%s: failed to copy\n", __func__); |
| 150 | return -EFAULT; |
| 151 | } |
| 152 | return wcdcal_hwdep_ioctl_shared(hw, fw_user); |
| 153 | } |
| 154 | |
| 155 | static int wcdcal_hwdep_release(struct snd_hwdep *hw, struct file *file) |
| 156 | { |
| 157 | struct fw_info *fw_data = hw->private_data; |
| 158 | |
| 159 | mutex_lock(&fw_data->lock); |
| 160 | /* clear all the calibrations */ |
| 161 | memset(fw_data->wcdcal_state, 0, |
| 162 | sizeof(fw_data->wcdcal_state)); |
| 163 | mutex_unlock(&fw_data->lock); |
| 164 | return 0; |
| 165 | } |
| 166 | |
| 167 | int wcd_cal_create_hwdep(void *data, int node, struct snd_soc_codec *codec) |
| 168 | { |
| 169 | char hwname[40]; |
| 170 | struct snd_hwdep *hwdep; |
| 171 | struct firmware_cal **fw; |
| 172 | struct fw_info *fw_data = data; |
| 173 | int err, cal_bit; |
| 174 | |
| 175 | if (!fw_data || !codec) { |
| 176 | pr_err("%s: wrong arguments passed\n", __func__); |
| 177 | return -EINVAL; |
| 178 | } |
| 179 | |
| 180 | fw = fw_data->fw; |
| 181 | snprintf(hwname, strlen("Codec %s"), "Codec %s", |
| 182 | codec->component.name); |
| 183 | err = snd_hwdep_new(codec->component.card->snd_card, |
| 184 | hwname, node, &hwdep); |
| 185 | if (err < 0) { |
| 186 | dev_err(codec->dev, "%s: new hwdep failed %d\n", |
| 187 | __func__, err); |
| 188 | return err; |
| 189 | } |
| 190 | snprintf(hwdep->name, strlen("Codec %s"), "Codec %s", |
| 191 | codec->component.name); |
| 192 | hwdep->iface = SNDRV_HWDEP_IFACE_AUDIO_CODEC; |
| 193 | hwdep->private_data = fw_data; |
| 194 | hwdep->ops.ioctl_compat = wcdcal_hwdep_ioctl_compat; |
| 195 | hwdep->ops.ioctl = wcdcal_hwdep_ioctl; |
| 196 | hwdep->ops.release = wcdcal_hwdep_release; |
| 197 | mutex_init(&fw_data->lock); |
| 198 | |
| 199 | for_each_set_bit(cal_bit, fw_data->cal_bit, WCD9XXX_MAX_CAL) { |
| 200 | set_bit(WCDCAL_UNINITIALISED, |
| 201 | &fw_data->wcdcal_state[cal_bit]); |
| 202 | fw[cal_bit] = kzalloc(sizeof *(fw[cal_bit]), GFP_KERNEL); |
| 203 | if (!fw[cal_bit]) { |
| 204 | dev_err(codec->dev, "%s: no memory for %s cal\n", |
| 205 | __func__, cal_name_info[cal_bit]); |
| 206 | goto end; |
| 207 | } |
| 208 | } |
| 209 | for_each_set_bit(cal_bit, fw_data->cal_bit, WCD9XXX_MAX_CAL) { |
| 210 | fw[cal_bit]->data = kzalloc(cal_size_info[cal_bit], |
| 211 | GFP_KERNEL); |
Bala Kishore Pati | da9885f | 2018-05-18 21:42:31 +0530 | [diff] [blame] | 212 | if (!fw[cal_bit]->data) { |
| 213 | dev_err(codec->dev, "%s: no memory for %s cal data\n", |
| 214 | __func__, cal_name_info[cal_bit]); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 215 | goto exit; |
Bala Kishore Pati | da9885f | 2018-05-18 21:42:31 +0530 | [diff] [blame] | 216 | } |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 217 | set_bit(WCDCAL_INITIALISED, |
| 218 | &fw_data->wcdcal_state[cal_bit]); |
| 219 | } |
| 220 | return 0; |
| 221 | exit: |
| 222 | for_each_set_bit(cal_bit, fw_data->cal_bit, WCD9XXX_MAX_CAL) { |
| 223 | kfree(fw[cal_bit]->data); |
| 224 | fw[cal_bit]->data = NULL; |
| 225 | } |
| 226 | end: |
| 227 | for_each_set_bit(cal_bit, fw_data->cal_bit, WCD9XXX_MAX_CAL) { |
| 228 | kfree(fw[cal_bit]); |
| 229 | fw[cal_bit] = NULL; |
| 230 | } |
| 231 | return -ENOMEM; |
| 232 | } |
| 233 | EXPORT_SYMBOL(wcd_cal_create_hwdep); |