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path: root/drivers/media/video/wm8739.c
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Diffstat (limited to 'drivers/media/video/wm8739.c')
-rw-r--r--drivers/media/video/wm8739.c351
1 files changed, 0 insertions, 351 deletions
diff --git a/drivers/media/video/wm8739.c b/drivers/media/video/wm8739.c
deleted file mode 100644
index f2864d5cd18..00000000000
--- a/drivers/media/video/wm8739.c
+++ /dev/null
@@ -1,351 +0,0 @@
-/*
- * wm8739
- *
- * Copyright (C) 2005 T. Adachi <tadachi@tadachi-net.com>
- *
- * Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl>
- * - Cleanup
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/ioctl.h>
-#include <asm/uaccess.h>
-#include <linux/i2c.h>
-#include <linux/i2c-id.h>
-#include <linux/videodev2.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
-#include <media/v4l2-i2c-drv.h>
-
-MODULE_DESCRIPTION("wm8739 driver");
-MODULE_AUTHOR("T. Adachi, Hans Verkuil");
-MODULE_LICENSE("GPL");
-
-static int debug;
-
-module_param(debug, int, 0644);
-
-MODULE_PARM_DESC(debug, "Debug level (0-1)");
-
-
-/* ------------------------------------------------------------------------ */
-
-enum {
- R0 = 0, R1,
- R5 = 5, R6, R7, R8, R9, R15 = 15,
- TOT_REGS
-};
-
-struct wm8739_state {
- struct v4l2_subdev sd;
- u32 clock_freq;
- u8 muted;
- u16 volume;
- u16 balance;
- u8 vol_l; /* +12dB to -34.5dB 1.5dB step (5bit) def:0dB */
- u8 vol_r; /* +12dB to -34.5dB 1.5dB step (5bit) def:0dB */
-};
-
-static inline struct wm8739_state *to_state(struct v4l2_subdev *sd)
-{
- return container_of(sd, struct wm8739_state, sd);
-}
-
-/* ------------------------------------------------------------------------ */
-
-static int wm8739_write(struct v4l2_subdev *sd, int reg, u16 val)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- int i;
-
- if (reg < 0 || reg >= TOT_REGS) {
- v4l2_err(sd, "Invalid register R%d\n", reg);
- return -1;
- }
-
- v4l2_dbg(1, debug, sd, "write: %02x %02x\n", reg, val);
-
- for (i = 0; i < 3; i++)
- if (i2c_smbus_write_byte_data(client,
- (reg << 1) | (val >> 8), val & 0xff) == 0)
- return 0;
- v4l2_err(sd, "I2C: cannot write %03x to register R%d\n", val, reg);
- return -1;
-}
-
-/* write regs to set audio volume etc */
-static void wm8739_set_audio(struct v4l2_subdev *sd)
-{
- struct wm8739_state *state = to_state(sd);
- u16 mute = state->muted ? 0x80 : 0;
-
- /* Volume setting: bits 0-4, 0x1f = 12 dB, 0x00 = -34.5 dB
- * Default setting: 0x17 = 0 dB
- */
- wm8739_write(sd, R0, (state->vol_l & 0x1f) | mute);
- wm8739_write(sd, R1, (state->vol_r & 0x1f) | mute);
-}
-
-static int wm8739_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
- struct wm8739_state *state = to_state(sd);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- ctrl->value = state->muted;
- break;
-
- case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = state->volume;
- break;
-
- case V4L2_CID_AUDIO_BALANCE:
- ctrl->value = state->balance;
- break;
-
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-static int wm8739_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
- struct wm8739_state *state = to_state(sd);
- unsigned int work_l, work_r;
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- state->muted = ctrl->value;
- break;
-
- case V4L2_CID_AUDIO_VOLUME:
- state->volume = ctrl->value;
- break;
-
- case V4L2_CID_AUDIO_BALANCE:
- state->balance = ctrl->value;
- break;
-
- default:
- return -EINVAL;
- }
-
- /* normalize ( 65535 to 0 -> 31 to 0 (12dB to -34.5dB) ) */
- work_l = (min(65536 - state->balance, 32768) * state->volume) / 32768;
- work_r = (min(state->balance, (u16)32768) * state->volume) / 32768;
-
- state->vol_l = (long)work_l * 31 / 65535;
- state->vol_r = (long)work_r * 31 / 65535;
-
- /* set audio volume etc. */
- wm8739_set_audio(sd);
- return 0;
-}
-
-/* ------------------------------------------------------------------------ */
-
-static struct v4l2_queryctrl wm8739_qctrl[] = {
- {
- .id = V4L2_CID_AUDIO_VOLUME,
- .name = "Volume",
- .minimum = 0,
- .maximum = 65535,
- .step = 65535/100,
- .default_value = 58880,
- .flags = 0,
- .type = V4L2_CTRL_TYPE_INTEGER,
- }, {
- .id = V4L2_CID_AUDIO_MUTE,
- .name = "Mute",
- .minimum = 0,
- .maximum = 1,
- .step = 1,
- .default_value = 1,
- .flags = 0,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- }, {
- .id = V4L2_CID_AUDIO_BALANCE,
- .name = "Balance",
- .minimum = 0,
- .maximum = 65535,
- .step = 65535/100,
- .default_value = 32768,
- .flags = 0,
- .type = V4L2_CTRL_TYPE_INTEGER,
- }
-};
-
-/* ------------------------------------------------------------------------ */
-
-static int wm8739_s_clock_freq(struct v4l2_subdev *sd, u32 audiofreq)
-{
- struct wm8739_state *state = to_state(sd);
-
- state->clock_freq = audiofreq;
- /* de-activate */
- wm8739_write(sd, R9, 0x000);
- switch (audiofreq) {
- case 44100:
- /* 256fps, fs=44.1k */
- wm8739_write(sd, R8, 0x020);
- break;
- case 48000:
- /* 256fps, fs=48k */
- wm8739_write(sd, R8, 0x000);
- break;
- case 32000:
- /* 256fps, fs=32k */
- wm8739_write(sd, R8, 0x018);
- break;
- default:
- break;
- }
- /* activate */
- wm8739_write(sd, R9, 0x001);
- return 0;
-}
-
-static int wm8739_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(wm8739_qctrl); i++)
- if (qc->id && qc->id == wm8739_qctrl[i].id) {
- memcpy(qc, &wm8739_qctrl[i], sizeof(*qc));
- return 0;
- }
- return -EINVAL;
-}
-
-static int wm8739_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
-
- return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_WM8739, 0);
-}
-
-static int wm8739_log_status(struct v4l2_subdev *sd)
-{
- struct wm8739_state *state = to_state(sd);
-
- v4l2_info(sd, "Frequency: %u Hz\n", state->clock_freq);
- v4l2_info(sd, "Volume L: %02x%s\n", state->vol_l & 0x1f,
- state->muted ? " (muted)" : "");
- v4l2_info(sd, "Volume R: %02x%s\n", state->vol_r & 0x1f,
- state->muted ? " (muted)" : "");
- return 0;
-}
-
-static int wm8739_command(struct i2c_client *client, unsigned cmd, void *arg)
-{
- return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
-}
-
-/* ----------------------------------------------------------------------- */
-
-static const struct v4l2_subdev_core_ops wm8739_core_ops = {
- .log_status = wm8739_log_status,
- .g_chip_ident = wm8739_g_chip_ident,
- .queryctrl = wm8739_queryctrl,
- .g_ctrl = wm8739_g_ctrl,
- .s_ctrl = wm8739_s_ctrl,
-};
-
-static const struct v4l2_subdev_audio_ops wm8739_audio_ops = {
- .s_clock_freq = wm8739_s_clock_freq,
-};
-
-static const struct v4l2_subdev_ops wm8739_ops = {
- .core = &wm8739_core_ops,
- .audio = &wm8739_audio_ops,
-};
-
-/* ------------------------------------------------------------------------ */
-
-/* i2c implementation */
-
-static int wm8739_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct wm8739_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 = kmalloc(sizeof(struct wm8739_state), GFP_KERNEL);
- if (state == NULL)
- return -ENOMEM;
- sd = &state->sd;
- v4l2_i2c_subdev_init(sd, client, &wm8739_ops);
- state->vol_l = 0x17; /* 0dB */
- state->vol_r = 0x17; /* 0dB */
- state->muted = 0;
- state->balance = 32768;
- /* normalize (12dB(31) to -34.5dB(0) [0dB(23)] -> 65535 to 0) */
- state->volume = ((long)state->vol_l + 1) * 65535 / 31;
- state->clock_freq = 48000;
-
- /* Initialize wm8739 */
-
- /* reset */
- wm8739_write(sd, R15, 0x00);
- /* filter setting, high path, offet clear */
- wm8739_write(sd, R5, 0x000);
- /* ADC, OSC, Power Off mode Disable */
- wm8739_write(sd, R6, 0x000);
- /* Digital Audio interface format:
- Enable Master mode, 24 bit, MSB first/left justified */
- wm8739_write(sd, R7, 0x049);
- /* sampling control: normal, 256fs, 48KHz sampling rate */
- wm8739_write(sd, R8, 0x000);
- /* activate */
- wm8739_write(sd, R9, 0x001);
- /* set volume/mute */
- wm8739_set_audio(sd);
- return 0;
-}
-
-static int wm8739_remove(struct i2c_client *client)
-{
- struct v4l2_subdev *sd = i2c_get_clientdata(client);
-
- v4l2_device_unregister_subdev(sd);
- kfree(to_state(sd));
- return 0;
-}
-
-static const struct i2c_device_id wm8739_id[] = {
- { "wm8739", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, wm8739_id);
-
-static struct v4l2_i2c_driver_data v4l2_i2c_data = {
- .name = "wm8739",
- .driverid = I2C_DRIVERID_WM8739,
- .command = wm8739_command,
- .probe = wm8739_probe,
- .remove = wm8739_remove,
- .id_table = wm8739_id,
-};
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