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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 | // SPDX-License-Identifier: GPL-2.0-or-later /* * cs5345 Cirrus Logic 24-bit, 192 kHz Stereo Audio ADC * Copyright (C) 2007 Hans Verkuil */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/i2c.h> #include <linux/videodev2.h> #include <linux/slab.h> #include <media/v4l2-device.h> #include <media/v4l2-ctrls.h> MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC"); MODULE_AUTHOR("Hans Verkuil"); MODULE_LICENSE("GPL"); static bool debug; module_param(debug, bool, 0644); MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); struct cs5345_state { struct v4l2_subdev sd; struct v4l2_ctrl_handler hdl; }; static inline struct cs5345_state *to_state(struct v4l2_subdev *sd) { return container_of(sd, struct cs5345_state, sd); } static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) { return &container_of(ctrl->handler, struct cs5345_state, hdl)->sd; } /* ----------------------------------------------------------------------- */ static inline int cs5345_write(struct v4l2_subdev *sd, u8 reg, u8 value) { struct i2c_client *client = v4l2_get_subdevdata(sd); return i2c_smbus_write_byte_data(client, reg, value); } static inline int cs5345_read(struct v4l2_subdev *sd, u8 reg) { struct i2c_client *client = v4l2_get_subdevdata(sd); return i2c_smbus_read_byte_data(client, reg); } static int cs5345_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) { if ((input & 0xf) > 6) { v4l2_err(sd, "Invalid input %d.\n", input); return -EINVAL; } cs5345_write(sd, 0x09, input & 0xf); cs5345_write(sd, 0x05, input & 0xf0); return 0; } static int cs5345_s_ctrl(struct v4l2_ctrl *ctrl) { struct v4l2_subdev *sd = to_sd(ctrl); switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: cs5345_write(sd, 0x04, ctrl->val ? 0x80 : 0); return 0; case V4L2_CID_AUDIO_VOLUME: cs5345_write(sd, 0x07, ((u8)ctrl->val) & 0x3f); cs5345_write(sd, 0x08, ((u8)ctrl->val) & 0x3f); return 0; } return -EINVAL; } #ifdef CONFIG_VIDEO_ADV_DEBUG static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) { reg->size = 1; reg->val = cs5345_read(sd, reg->reg & 0x1f); return 0; } static int cs5345_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) { cs5345_write(sd, reg->reg & 0x1f, reg->val & 0xff); return 0; } #endif static int cs5345_log_status(struct v4l2_subdev *sd) { u8 v = cs5345_read(sd, 0x09) & 7; u8 m = cs5345_read(sd, 0x04); int vol = cs5345_read(sd, 0x08) & 0x3f; v4l2_info(sd, "Input: %d%s\n", v, (m & 0x80) ? " (muted)" : ""); if (vol >= 32) vol = vol - 64; v4l2_info(sd, "Volume: %d dB\n", vol); return 0; } /* ----------------------------------------------------------------------- */ static const struct v4l2_ctrl_ops cs5345_ctrl_ops = { .s_ctrl = cs5345_s_ctrl, }; static const struct v4l2_subdev_core_ops cs5345_core_ops = { .log_status = cs5345_log_status, #ifdef CONFIG_VIDEO_ADV_DEBUG .g_register = cs5345_g_register, .s_register = cs5345_s_register, #endif }; static const struct v4l2_subdev_audio_ops cs5345_audio_ops = { .s_routing = cs5345_s_routing, }; static const struct v4l2_subdev_ops cs5345_ops = { .core = &cs5345_core_ops, .audio = &cs5345_audio_ops, }; /* ----------------------------------------------------------------------- */ static int cs5345_probe(struct i2c_client *client) { struct cs5345_state *state; struct v4l2_subdev *sd; /* Check if the adapter supports the needed features */ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); if (state == NULL) return -ENOMEM; sd = &state->sd; v4l2_i2c_subdev_init(sd, client, &cs5345_ops); v4l2_ctrl_handler_init(&state->hdl, 2); v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops, V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops, V4L2_CID_AUDIO_VOLUME, -24, 24, 1, 0); sd->ctrl_handler = &state->hdl; if (state->hdl.error) { int err = state->hdl.error; v4l2_ctrl_handler_free(&state->hdl); return err; } /* set volume/mute */ v4l2_ctrl_handler_setup(&state->hdl); cs5345_write(sd, 0x02, 0x00); cs5345_write(sd, 0x04, 0x01); cs5345_write(sd, 0x09, 0x01); return 0; } /* ----------------------------------------------------------------------- */ static void cs5345_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct cs5345_state *state = to_state(sd); v4l2_device_unregister_subdev(sd); v4l2_ctrl_handler_free(&state->hdl); } /* ----------------------------------------------------------------------- */ static const struct i2c_device_id cs5345_id[] = { { "cs5345", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, cs5345_id); static struct i2c_driver cs5345_driver = { .driver = { .name = "cs5345", }, .probe_new = cs5345_probe, .remove = cs5345_remove, .id_table = cs5345_id, }; module_i2c_driver(cs5345_driver); |