[mirror_ubuntu-artful-kernel.git] / drivers / media / video / cx25840 / cx25840-audio.c

/* cx25840 audio functions
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */


#include <linux/videodev2.h>
#include <linux/i2c.h>
#include <media/audiochip.h>
#include <media/v4l2-common.h>

#include "cx25840.h"

inline static int set_audclk_freq(struct i2c_client *client,
				 enum v4l2_audio_clock_freq freq)
{
	struct cx25840_state *state = i2c_get_clientdata(client);

	/* assert soft reset */
	cx25840_and_or(client, 0x810, ~0x1, 0x01);

	/* common for all inputs and rates */
	/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x10 */
	cx25840_write(client, 0x127, 0x50);

	switch (state->audio_input) {
	case AUDIO_TUNER:
		switch (freq) {
		case V4L2_AUDCLK_32_KHZ:
			/* VID_PLL and AUX_PLL */
			cx25840_write4(client, 0x108, 0x0f040610);

			/* AUX_PLL_FRAC */
			cx25840_write4(client, 0x110, 0xee39bb01);

			/* src3/4/6_ctl = 0x0801f77f */
			cx25840_write4(client, 0x900, 0x7ff70108);
			cx25840_write4(client, 0x904, 0x7ff70108);
			cx25840_write4(client, 0x90c, 0x7ff70108);
			break;

		case V4L2_AUDCLK_441_KHZ:
			/* VID_PLL and AUX_PLL */
			cx25840_write4(client, 0x108, 0x0f040910);

			/* AUX_PLL_FRAC */
			cx25840_write4(client, 0x110, 0xd66bec00);

			/* src3/4/6_ctl = 0x08016d59 */
			cx25840_write4(client, 0x900, 0x596d0108);
			cx25840_write4(client, 0x904, 0x596d0108);
			cx25840_write4(client, 0x90c, 0x596d0108);
			break;

		case V4L2_AUDCLK_48_KHZ:
			/* VID_PLL and AUX_PLL */
			cx25840_write4(client, 0x108, 0x0f040a10);

			/* AUX_PLL_FRAC */
			cx25840_write4(client, 0x110, 0xe5d69800);

			/* src3/4/6_ctl = 0x08014faa */
			cx25840_write4(client, 0x900, 0xaa4f0108);
			cx25840_write4(client, 0x904, 0xaa4f0108);
			cx25840_write4(client, 0x90c, 0xaa4f0108);
			break;
		}
		break;

	case AUDIO_EXTERN_1:
	case AUDIO_EXTERN_2:
	case AUDIO_INTERN:
	case AUDIO_RADIO:
		switch (freq) {
		case V4L2_AUDCLK_32_KHZ:
			/* VID_PLL and AUX_PLL */
			cx25840_write4(client, 0x108, 0x0f04081e);

			/* AUX_PLL_FRAC */
			cx25840_write4(client, 0x110, 0x69082a01);

			/* src1_ctl = 0x08010000 */
			cx25840_write4(client, 0x8f8, 0x00000108);

			/* src3/4/6_ctl = 0x08020000 */
			cx25840_write4(client, 0x900, 0x00000208);
			cx25840_write4(client, 0x904, 0x00000208);
			cx25840_write4(client, 0x90c, 0x00000208);

			/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
			cx25840_write(client, 0x127, 0x54);
			break;

		case V4L2_AUDCLK_441_KHZ:
			/* VID_PLL and AUX_PLL */
			cx25840_write4(client, 0x108, 0x0f040918);

			/* AUX_PLL_FRAC */
			cx25840_write4(client, 0x110, 0xd66bec00);

			/* src1_ctl = 0x08010000 */
			cx25840_write4(client, 0x8f8, 0xcd600108);

			/* src3/4/6_ctl = 0x08020000 */
			cx25840_write4(client, 0x900, 0x85730108);
			cx25840_write4(client, 0x904, 0x85730108);
			cx25840_write4(client, 0x90c, 0x85730108);
			break;

		case V4L2_AUDCLK_48_KHZ:
			/* VID_PLL and AUX_PLL */
			cx25840_write4(client, 0x108, 0x0f040a18);

			/* AUX_PLL_FRAC */
			cx25840_write4(client, 0x110, 0xe5d69800);

			/* src1_ctl = 0x08010000 */
			cx25840_write4(client, 0x8f8, 0x00800108);

			/* src3/4/6_ctl = 0x08020000 */
			cx25840_write4(client, 0x900, 0x55550108);
			cx25840_write4(client, 0x904, 0x55550108);
			cx25840_write4(client, 0x90c, 0x55550108);
			break;
		}
		break;
	}

	/* deassert soft reset */
	cx25840_and_or(client, 0x810, ~0x1, 0x00);

	state->audclk_freq = freq;

	return 0;
}

static int set_input(struct i2c_client *client, int audio_input)
{
	struct cx25840_state *state = i2c_get_clientdata(client);

	cx25840_dbg("set audio input (%d)\n", audio_input);

	/* stop microcontroller */
	cx25840_and_or(client, 0x803, ~0x10, 0);

	/* Mute everything to prevent the PFFT! */
	cx25840_write(client, 0x8d3, 0x1f);

	switch (audio_input) {
	case AUDIO_TUNER:
		/* Set Path1 to Analog Demod Main Channel */
		cx25840_write4(client, 0x8d0, 0x7038061f);

		/* When the microcontroller detects the
		 * audio format, it will unmute the lines */
		cx25840_and_or(client, 0x803, ~0x10, 0x10);
		break;

	case AUDIO_EXTERN_1:
	case AUDIO_EXTERN_2:
	case AUDIO_INTERN:
	case AUDIO_RADIO:
		/* Set Path1 to Serial Audio Input */
		cx25840_write4(client, 0x8d0, 0x12100101);

		/* The microcontroller should not be started for the
		 * non-tuner inputs: autodetection is specific for
		 * TV audio. */
		break;

	default:
		cx25840_dbg("Invalid audio input selection %d\n", audio_input);
		return -EINVAL;
	}

	state->audio_input = audio_input;

	return set_audclk_freq(client, state->audclk_freq);
}

inline static int get_volume(struct i2c_client *client)
{
	/* Volume runs +18dB to -96dB in 1/2dB steps
	 * change to fit the msp3400 -114dB to +12dB range */

	/* check PATH1_VOLUME */
	int vol = 228 - cx25840_read(client, 0x8d4);
	vol = (vol / 2) + 23;
	return vol << 9;
}

inline static void set_volume(struct i2c_client *client, int volume)
{
	/* First convert the volume to msp3400 values (0-127) */
	int vol = volume >> 9;
	/* now scale it up to cx25840 values
	 * -114dB to -96dB maps to 0
	 * this should be 19, but in my testing that was 4dB too loud */
	if (vol <= 23) {
		vol = 0;
	} else {
		vol -= 23;
	}

	/* PATH1_VOLUME */
	cx25840_write(client, 0x8d4, 228 - (vol * 2));
}

inline static int get_bass(struct i2c_client *client)
{
	/* bass is 49 steps +12dB to -12dB */

	/* check PATH1_EQ_BASS_VOL */
	int bass = cx25840_read(client, 0x8d9) & 0x3f;
	bass = (((48 - bass) * 0xffff) + 47) / 48;
	return bass;
}

inline static void set_bass(struct i2c_client *client, int bass)
{
	/* PATH1_EQ_BASS_VOL */
	cx25840_and_or(client, 0x8d9, ~0x3f, 48 - (bass * 48 / 0xffff));
}

inline static int get_treble(struct i2c_client *client)
{
	/* treble is 49 steps +12dB to -12dB */

	/* check PATH1_EQ_TREBLE_VOL */
	int treble = cx25840_read(client, 0x8db) & 0x3f;
	treble = (((48 - treble) * 0xffff) + 47) / 48;
	return treble;
}

inline static void set_treble(struct i2c_client *client, int treble)
{
	/* PATH1_EQ_TREBLE_VOL */
	cx25840_and_or(client, 0x8db, ~0x3f, 48 - (treble * 48 / 0xffff));
}

inline static int get_balance(struct i2c_client *client)
{
	/* balance is 7 bit, 0 to -96dB */

	/* check PATH1_BAL_LEVEL */
	int balance = cx25840_read(client, 0x8d5) & 0x7f;
	/* check PATH1_BAL_LEFT */
	if ((cx25840_read(client, 0x8d5) & 0x80) == 0)
		balance = 0x80 - balance;
	else
		balance = 0x80 + balance;
	return balance << 8;
}

inline static void set_balance(struct i2c_client *client, int balance)
{
	int bal = balance >> 8;
	if (bal > 0x80) {
		/* PATH1_BAL_LEFT */
		cx25840_and_or(client, 0x8d5, 0x7f, 0x80);
		/* PATH1_BAL_LEVEL */
		cx25840_and_or(client, 0x8d5, ~0x7f, bal & 0x7f);
	} else {
		/* PATH1_BAL_LEFT */
		cx25840_and_or(client, 0x8d5, 0x7f, 0x00);
		/* PATH1_BAL_LEVEL */
		cx25840_and_or(client, 0x8d5, ~0x7f, 0x80 - bal);
	}
}

inline static int get_mute(struct i2c_client *client)
{
	/* check SRC1_MUTE_EN */
	return cx25840_read(client, 0x8d3) & 0x2 ? 1 : 0;
}

inline static void set_mute(struct i2c_client *client, int mute)
{
	struct cx25840_state *state = i2c_get_clientdata(client);

	if (state->audio_input == AUDIO_TUNER) {
		/* Must turn off microcontroller in order to mute sound.
		 * Not sure if this is the best method, but it does work.
		 * If the microcontroller is running, then it will undo any
		 * changes to the mute register. */
		if (mute) {
			/* disable microcontroller */
			cx25840_and_or(client, 0x803, ~0x10, 0x00);
			cx25840_write(client, 0x8d3, 0x1f);
		} else {
			/* enable microcontroller */
			cx25840_and_or(client, 0x803, ~0x10, 0x10);
		}
	} else {
		/* SRC1_MUTE_EN */
		cx25840_and_or(client, 0x8d3, ~0x2, mute ? 0x02 : 0x00);
	}
}

int cx25840_audio(struct i2c_client *client, unsigned int cmd, void *arg)
{
	struct v4l2_control *ctrl = arg;

	switch (cmd) {
	case AUDC_SET_INPUT:
		return set_input(client, *(int *)arg);
	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
		return set_audclk_freq(client, *(enum v4l2_audio_clock_freq *)arg);
	case VIDIOC_G_CTRL:
		switch (ctrl->id) {
		case V4L2_CID_AUDIO_VOLUME:
			ctrl->value = get_volume(client);
			break;
		case V4L2_CID_AUDIO_BASS:
			ctrl->value = get_bass(client);
			break;
		case V4L2_CID_AUDIO_TREBLE:
			ctrl->value = get_treble(client);
			break;
		case V4L2_CID_AUDIO_BALANCE:
			ctrl->value = get_balance(client);
			break;
		case V4L2_CID_AUDIO_MUTE:
			ctrl->value = get_mute(client);
			break;
		default:
			return -EINVAL;
		}
		break;
	case VIDIOC_S_CTRL:
		switch (ctrl->id) {
		case V4L2_CID_AUDIO_VOLUME:
			set_volume(client, ctrl->value);
			break;
		case V4L2_CID_AUDIO_BASS:
			set_bass(client, ctrl->value);
			break;
		case V4L2_CID_AUDIO_TREBLE:
			set_treble(client, ctrl->value);
			break;
		case V4L2_CID_AUDIO_BALANCE:
			set_balance(client, ctrl->value);
			break;
		case V4L2_CID_AUDIO_MUTE:
			set_mute(client, ctrl->value);
			break;
		default:
			return -EINVAL;
		}
		break;
	default:
		return -EINVAL;
	}

	return 0;
}
Commit	Line	Data
bd985160 HV	1	/* cx25840 audio functions
	2	*
	3	* This program is free software; you can redistribute it and/or
	4	* modify it under the terms of the GNU General Public License
	5	* as published by the Free Software Foundation; either version 2
	6	* of the License, or (at your option) any later version.
	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	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, write to the Free Software
	15	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	16	*/
	17
	18
	19	#include <linux/videodev2.h>
	20	#include <linux/i2c.h>
	21	#include <media/audiochip.h>
bd985160 HV	22	#include <media/v4l2-common.h>
	23
	24	#include "cx25840.h"
	25
	26	inline static int set_audclk_freq(struct i2c_client *client,
	27	enum v4l2_audio_clock_freq freq)
	28	{
	29	struct cx25840_state *state = i2c_get_clientdata(client);
	30
	31	/* assert soft reset */
	32	cx25840_and_or(client, 0x810, ~0x1, 0x01);
	33
	34	/* common for all inputs and rates */
	35	/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x10 */
	36	cx25840_write(client, 0x127, 0x50);
	37
	38	switch (state->audio_input) {
	39	case AUDIO_TUNER:
	40	switch (freq) {
	41	case V4L2_AUDCLK_32_KHZ:
	42	/* VID_PLL and AUX_PLL */
	43	cx25840_write4(client, 0x108, 0x0f040610);
	44
	45	/* AUX_PLL_FRAC */
	46	cx25840_write4(client, 0x110, 0xee39bb01);
	47
	48	/* src3/4/6_ctl = 0x0801f77f */
	49	cx25840_write4(client, 0x900, 0x7ff70108);
	50	cx25840_write4(client, 0x904, 0x7ff70108);
	51	cx25840_write4(client, 0x90c, 0x7ff70108);
	52	break;
	53
	54	case V4L2_AUDCLK_441_KHZ:
	55	/* VID_PLL and AUX_PLL */
	56	cx25840_write4(client, 0x108, 0x0f040910);
	57
	58	/* AUX_PLL_FRAC */
	59	cx25840_write4(client, 0x110, 0xd66bec00);
	60
	61	/* src3/4/6_ctl = 0x08016d59 */
	62	cx25840_write4(client, 0x900, 0x596d0108);
	63	cx25840_write4(client, 0x904, 0x596d0108);
	64	cx25840_write4(client, 0x90c, 0x596d0108);
	65	break;
	66
	67	case V4L2_AUDCLK_48_KHZ:
	68	/* VID_PLL and AUX_PLL */
	69	cx25840_write4(client, 0x108, 0x0f040a10);
	70
	71	/* AUX_PLL_FRAC */
	72	cx25840_write4(client, 0x110, 0xe5d69800);
	73
	74	/* src3/4/6_ctl = 0x08014faa */
	75	cx25840_write4(client, 0x900, 0xaa4f0108);
	76	cx25840_write4(client, 0x904, 0xaa4f0108);
	77	cx25840_write4(client, 0x90c, 0xaa4f0108);
	78	break;
	79	}
	80	break;
	81
	82	case AUDIO_EXTERN_1:
	83	case AUDIO_EXTERN_2:
	84	case AUDIO_INTERN:
	85	case AUDIO_RADIO:
86	switch (freq) {
87	case V4L2_AUDCLK_32_KHZ:
88	/* VID_PLL and AUX_PLL */
89	cx25840_write4(client, 0x108, 0x0f04081e);
90
91	/* AUX_PLL_FRAC */
92	cx25840_write4(client, 0x110, 0x69082a01);
93
94	/* src1_ctl = 0x08010000 */
95	cx25840_write4(client, 0x8f8, 0x00000108);
96
97	/* src3/4/6_ctl = 0x08020000 */
98	cx25840_write4(client, 0x900, 0x00000208);
99	cx25840_write4(client, 0x904, 0x00000208);
100	cx25840_write4(client, 0x90c, 0x00000208);
101
102	/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
103	cx25840_write(client, 0x127, 0x54);
104	break;
105
106	case V4L2_AUDCLK_441_KHZ:
107	/* VID_PLL and AUX_PLL */
108	cx25840_write4(client, 0x108, 0x0f040918);
109
110	/* AUX_PLL_FRAC */
111	cx25840_write4(client, 0x110, 0xd66bec00);
112
113	/* src1_ctl = 0x08010000 */
114	cx25840_write4(client, 0x8f8, 0xcd600108);
115
116	/* src3/4/6_ctl = 0x08020000 */
117	cx25840_write4(client, 0x900, 0x85730108);
118	cx25840_write4(client, 0x904, 0x85730108);
119	cx25840_write4(client, 0x90c, 0x85730108);
120	break;
121
122	case V4L2_AUDCLK_48_KHZ:
123	/* VID_PLL and AUX_PLL */
124	cx25840_write4(client, 0x108, 0x0f040a18);
125
126	/* AUX_PLL_FRAC */
127	cx25840_write4(client, 0x110, 0xe5d69800);
128
129	/* src1_ctl = 0x08010000 */
130	cx25840_write4(client, 0x8f8, 0x00800108);
131
132	/* src3/4/6_ctl = 0x08020000 */
133	cx25840_write4(client, 0x900, 0x55550108);
134	cx25840_write4(client, 0x904, 0x55550108);
135	cx25840_write4(client, 0x90c, 0x55550108);
136	break;
137	}
138	break;
139	}
140
141	/* deassert soft reset */
142	cx25840_and_or(client, 0x810, ~0x1, 0x00);
143
144	state->audclk_freq = freq;
145
146	return 0;
147	}
148
149	static int set_input(struct i2c_client *client, int audio_input)
150	{
151	struct cx25840_state *state = i2c_get_clientdata(client);
152
153	cx25840_dbg("set audio input (%d)\n", audio_input);
154
155	/* stop microcontroller */
156	cx25840_and_or(client, 0x803, ~0x10, 0);
157
158	/* Mute everything to prevent the PFFT! */
159	cx25840_write(client, 0x8d3, 0x1f);
160
161	switch (audio_input) {
162	case AUDIO_TUNER:
163	/* Set Path1 to Analog Demod Main Channel */
164	cx25840_write4(client, 0x8d0, 0x7038061f);
165
166	/* When the microcontroller detects the
167	* audio format, it will unmute the lines */
168	cx25840_and_or(client, 0x803, ~0x10, 0x10);
169	break;
170
171	case AUDIO_EXTERN_1:
172	case AUDIO_EXTERN_2:
173	case AUDIO_INTERN:
174	case AUDIO_RADIO:
175	/* Set Path1 to Serial Audio Input */
176	cx25840_write4(client, 0x8d0, 0x12100101);
177
178	/* The microcontroller should not be started for the
179	* non-tuner inputs: autodetection is specific for
180	* TV audio. */
181	break;
182
183	default:
184	cx25840_dbg("Invalid audio input selection %d\n", audio_input);
185	return -EINVAL;
186	}
187
188	state->audio_input = audio_input;
189
190	return set_audclk_freq(client, state->audclk_freq);
191	}
192
193	inline static int get_volume(struct i2c_client *client)
194	{
195	/* Volume runs +18dB to -96dB in 1/2dB steps
196	* change to fit the msp3400 -114dB to +12dB range */
197
198	/* check PATH1_VOLUME */
199	int vol = 228 - cx25840_read(client, 0x8d4);
200	vol = (vol / 2) + 23;
201	return vol << 9;
202	}
203
204	inline static void set_volume(struct i2c_client *client, int volume)
205	{
206	/* First convert the volume to msp3400 values (0-127) */
207	int vol = volume >> 9;
208	/* now scale it up to cx25840 values
209	* -114dB to -96dB maps to 0
210	* this should be 19, but in my testing that was 4dB too loud */
211	if (vol <= 23) {
212	vol = 0;
213	} else {
214	vol -= 23;
215	}
216
217	/* PATH1_VOLUME */
218	cx25840_write(client, 0x8d4, 228 - (vol * 2));
219	}
220
221	inline static int get_bass(struct i2c_client *client)
222	{
223	/* bass is 49 steps +12dB to -12dB */
224
225	/* check PATH1_EQ_BASS_VOL */
226	int bass = cx25840_read(client, 0x8d9) & 0x3f;
227	bass = (((48 - bass) * 0xffff) + 47) / 48;
228	return bass;
229	}
230
231	inline static void set_bass(struct i2c_client *client, int bass)
232	{
233	/* PATH1_EQ_BASS_VOL */
234	cx25840_and_or(client, 0x8d9, ~0x3f, 48 - (bass * 48 / 0xffff));
235	}
236
237	inline static int get_treble(struct i2c_client *client)
238	{
239	/* treble is 49 steps +12dB to -12dB */
240
241	/* check PATH1_EQ_TREBLE_VOL */
242	int treble = cx25840_read(client, 0x8db) & 0x3f;
243	treble = (((48 - treble) * 0xffff) + 47) / 48;
244	return treble;
245	}
246
247	inline static void set_treble(struct i2c_client *client, int treble)
248	{
249	/* PATH1_EQ_TREBLE_VOL */
250	cx25840_and_or(client, 0x8db, ~0x3f, 48 - (treble * 48 / 0xffff));
251	}
252
253	inline static int get_balance(struct i2c_client *client)
254	{
255	/* balance is 7 bit, 0 to -96dB */
256
257	/* check PATH1_BAL_LEVEL */
258	int balance = cx25840_read(client, 0x8d5) & 0x7f;
259	/* check PATH1_BAL_LEFT */
260	if ((cx25840_read(client, 0x8d5) & 0x80) == 0)
261	balance = 0x80 - balance;
262	else
263	balance = 0x80 + balance;
264	return balance << 8;
265	}
266
267	inline static void set_balance(struct i2c_client *client, int balance)
268	{
269	int bal = balance >> 8;
270	if (bal > 0x80) {
271	/* PATH1_BAL_LEFT */
272	cx25840_and_or(client, 0x8d5, 0x7f, 0x80);
273	/* PATH1_BAL_LEVEL */
274	cx25840_and_or(client, 0x8d5, ~0x7f, bal & 0x7f);
275	} else {
276	/* PATH1_BAL_LEFT */
277	cx25840_and_or(client, 0x8d5, 0x7f, 0x00);
278	/* PATH1_BAL_LEVEL */
279	cx25840_and_or(client, 0x8d5, ~0x7f, 0x80 - bal);
280	}
281	}
282
283	inline static int get_mute(struct i2c_client *client)
284	{
285	/* check SRC1_MUTE_EN */
286	return cx25840_read(client, 0x8d3) & 0x2 ? 1 : 0;
287	}
288
289	inline static void set_mute(struct i2c_client *client, int mute)
290	{
291	struct cx25840_state *state = i2c_get_clientdata(client);
292
293	if (state->audio_input == AUDIO_TUNER) {
294	/* Must turn off microcontroller in order to mute sound.
295	* Not sure if this is the best method, but it does work.
296	* If the microcontroller is running, then it will undo any
297	* changes to the mute register. */
298	if (mute) {
299	/* disable microcontroller */
300	cx25840_and_or(client, 0x803, ~0x10, 0x00);
301	cx25840_write(client, 0x8d3, 0x1f);
302	} else {
303	/* enable microcontroller */
304	cx25840_and_or(client, 0x803, ~0x10, 0x10);
305	}
306	} else {
307	/* SRC1_MUTE_EN */
308	cx25840_and_or(client, 0x8d3, ~0x2, mute ? 0x02 : 0x00);
309	}
310	}
311
312	int cx25840_audio(struct i2c_client client, unsigned int cmd, void arg)
313	{
314	struct v4l2_control *ctrl = arg;
315
316	switch (cmd) {
317	case AUDC_SET_INPUT:
318	return set_input(client, (int )arg);
319	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
320	return set_audclk_freq(client, (enum v4l2_audio_clock_freq )arg);
321	case VIDIOC_G_CTRL:
322	switch (ctrl->id) {
323	case V4L2_CID_AUDIO_VOLUME:
324	ctrl->value = get_volume(client);
325	break;
326	case V4L2_CID_AUDIO_BASS:
327	ctrl->value = get_bass(client);
328	break;
329	case V4L2_CID_AUDIO_TREBLE:
330	ctrl->value = get_treble(client);
331	break;
332	case V4L2_CID_AUDIO_BALANCE:
333	ctrl->value = get_balance(client);
334	break;
335	case V4L2_CID_AUDIO_MUTE:
336	ctrl->value = get_mute(client);
337	break;
338	default:
339	return -EINVAL;
340	}
341	break;
342	case VIDIOC_S_CTRL:
343	switch (ctrl->id) {
344	case V4L2_CID_AUDIO_VOLUME:
345	set_volume(client, ctrl->value);
346	break;
347	case V4L2_CID_AUDIO_BASS:
348	set_bass(client, ctrl->value);
349	break;
350	case V4L2_CID_AUDIO_TREBLE:
351	set_treble(client, ctrl->value);
352	break;
353	case V4L2_CID_AUDIO_BALANCE:
354	set_balance(client, ctrl->value);
355	break;
356	case V4L2_CID_AUDIO_MUTE:
357	set_mute(client, ctrl->value);
358	break;
359	default:
360	return -EINVAL;
361	}
362	break;
363	default:
364	return -EINVAL;
365	}
366
367	return 0;
368	}