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path: root/drivers/media/video/wm8775.c
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Diffstat (limited to 'drivers/media/video/wm8775.c')
-rw-r--r--drivers/media/video/wm8775.c257
1 files changed, 0 insertions, 257 deletions
diff --git a/drivers/media/video/wm8775.c b/drivers/media/video/wm8775.c
deleted file mode 100644
index 8cb64f8a8a9..00000000000
--- a/drivers/media/video/wm8775.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * wm8775 - driver version 0.0.1
- *
- * Copyright (C) 2004 Ulf Eklund <ivtv at eklund.to>
- *
- * Based on saa7115 driver
- *
- * Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl>
- * - Cleanup
- * - V4L2 API update
- * - sound fixes
- *
- * 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/videodev.h>
-#include <media/v4l2-common.h>
-
-MODULE_DESCRIPTION("wm8775 driver");
-MODULE_AUTHOR("Ulf Eklund, Hans Verkuil");
-MODULE_LICENSE("GPL");
-
-static unsigned short normal_i2c[] = { 0x36 >> 1, I2C_CLIENT_END };
-
-
-I2C_CLIENT_INSMOD;
-
-/* ----------------------------------------------------------------------- */
-
-enum {
- R7 = 7, R11 = 11,
- R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R23 = 23,
- TOT_REGS
-};
-
-struct wm8775_state {
- u8 input; /* Last selected input (0-0xf) */
- u8 muted;
-};
-
-static int wm8775_write(struct i2c_client *client, int reg, u16 val)
-{
- int i;
-
- if (reg < 0 || reg >= TOT_REGS) {
- v4l_err(client, "Invalid register R%d\n", reg);
- return -1;
- }
-
- for (i = 0; i < 3; i++) {
- if (i2c_smbus_write_byte_data(client, (reg << 1) |
- (val >> 8), val & 0xff) == 0) {
- return 0;
- }
- }
- v4l_err(client, "I2C: cannot write %03x to register R%d\n", val, reg);
- return -1;
-}
-
-static int wm8775_command(struct i2c_client *client, unsigned int cmd,
- void *arg)
-{
- struct wm8775_state *state = i2c_get_clientdata(client);
- struct v4l2_audio *input = arg;
- struct v4l2_control *ctrl = arg;
-
- switch (cmd) {
- case VIDIOC_S_AUDIO:
- /* There are 4 inputs and one output. Zero or more inputs
- are multiplexed together to the output. Hence there are
- 16 combinations.
- If only one input is active (the normal case) then the
- input values 1, 2, 4 or 8 should be used. */
- if (input->index > 15) {
- v4l_err(client, "Invalid input %d.\n", input->index);
- return -EINVAL;
- }
- state->input = input->index;
- if (state->muted)
- break;
- wm8775_write(client, R21, 0x0c0);
- wm8775_write(client, R14, 0x1d4);
- wm8775_write(client, R15, 0x1d4);
- wm8775_write(client, R21, 0x100 + state->input);
- break;
-
- case VIDIOC_G_AUDIO:
- memset(input, 0, sizeof(*input));
- input->index = state->input;
- break;
-
- case VIDIOC_G_CTRL:
- if (ctrl->id != V4L2_CID_AUDIO_MUTE)
- return -EINVAL;
- ctrl->value = state->muted;
- break;
-
- case VIDIOC_S_CTRL:
- if (ctrl->id != V4L2_CID_AUDIO_MUTE)
- return -EINVAL;
- state->muted = ctrl->value;
- wm8775_write(client, R21, 0x0c0);
- wm8775_write(client, R14, 0x1d4);
- wm8775_write(client, R15, 0x1d4);
- if (!state->muted)
- wm8775_write(client, R21, 0x100 + state->input);
- break;
-
- case VIDIOC_LOG_STATUS:
- v4l_info(client, "Input: %d%s\n", state->input,
- state->muted ? " (muted)" : "");
- break;
-
- case VIDIOC_S_FREQUENCY:
- /* If I remove this, then it can happen that I have no
- sound the first time I tune from static to a valid channel.
- It's difficult to reproduce and is almost certainly related
- to the zero cross detect circuit. */
- wm8775_write(client, R21, 0x0c0);
- wm8775_write(client, R14, 0x1d4);
- wm8775_write(client, R15, 0x1d4);
- wm8775_write(client, R21, 0x100 + state->input);
- break;
-
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-/* ----------------------------------------------------------------------- */
-
-/* i2c implementation */
-
-/*
- * Generic i2c probe
- * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
- */
-
-static struct i2c_driver i2c_driver;
-
-static int wm8775_attach(struct i2c_adapter *adapter, int address, int kind)
-{
- struct i2c_client *client;
- struct wm8775_state *state;
-
- /* Check if the adapter supports the needed features */
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- return 0;
-
- client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (client == 0)
- return -ENOMEM;
-
- client->addr = address;
- client->adapter = adapter;
- client->driver = &i2c_driver;
- snprintf(client->name, sizeof(client->name) - 1, "wm8775");
-
- v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name);
-
- state = kmalloc(sizeof(struct wm8775_state), GFP_KERNEL);
- if (state == NULL) {
- kfree(client);
- return -ENOMEM;
- }
- state->input = 2;
- state->muted = 0;
- i2c_set_clientdata(client, state);
-
- /* initialize wm8775 */
- wm8775_write(client, R23, 0x000); /* RESET */
- wm8775_write(client, R7, 0x000); /* Disable zero cross detect timeout */
- wm8775_write(client, R11, 0x021); /* Left justified, 24-bit mode */
- wm8775_write(client, R12, 0x102); /* Master mode, clock ratio 256fs */
- wm8775_write(client, R13, 0x000); /* Powered up */
- wm8775_write(client, R14, 0x1d4); /* ADC gain +2.5dB, enable zero cross */
- wm8775_write(client, R15, 0x1d4); /* ADC gain +2.5dB, enable zero cross */
- wm8775_write(client, R16, 0x1bf); /* ALC Stereo, ALC target level -1dB FS */
- /* max gain +8dB */
- wm8775_write(client, R17, 0x185); /* Enable gain control, use zero cross */
- /* detection, ALC hold time 42.6 ms */
- wm8775_write(client, R18, 0x0a2); /* ALC gain ramp up delay 34 s, */
- /* ALC gain ramp down delay 33 ms */
- wm8775_write(client, R19, 0x005); /* Enable noise gate, threshold -72dBfs */
- wm8775_write(client, R20, 0x07a); /* Transient window 4ms, lower PGA gain */
- /* limit -1dB */
- wm8775_write(client, R21, 0x102); /* LRBOTH = 1, use input 2. */
- i2c_attach_client(client);
-
- return 0;
-}
-
-static int wm8775_probe(struct i2c_adapter *adapter)
-{
- if (adapter->class & I2C_CLASS_TV_ANALOG)
- return i2c_probe(adapter, &addr_data, wm8775_attach);
- return 0;
-}
-
-static int wm8775_detach(struct i2c_client *client)
-{
- int err;
-
- err = i2c_detach_client(client);
- if (err) {
- return err;
- }
- kfree(client);
-
- return 0;
-}
-
-/* ----------------------------------------------------------------------- */
-
-/* i2c implementation */
-static struct i2c_driver i2c_driver = {
- .driver = {
- .name = "wm8775",
- },
- .id = I2C_DRIVERID_WM8775,
- .attach_adapter = wm8775_probe,
- .detach_client = wm8775_detach,
- .command = wm8775_command,
-};
-
-
-static int __init wm8775_init_module(void)
-{
- return i2c_add_driver(&i2c_driver);
-}
-
-static void __exit wm8775_cleanup_module(void)
-{
- i2c_del_driver(&i2c_driver);
-}
-
-module_init(wm8775_init_module);
-module_exit(wm8775_cleanup_module);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2026-01-05 22:02:09 +0000