1 // SPDX-License-Identifier: GPL-2.0-or-later
5  * Copyright (C) 2005 T. Adachi <tadachi@tadachi-net.com>
8  * - Cleanup
18 #include <media/v4l2-device.h>
19 #include <media/v4l2-ctrls.h>
29 MODULE_PARM_DESC(debug, "Debug level (0-1)");
32 /* ------------------------------------------------------------------------ */
59 	return &container_of(ctrl->handler, struct wm8739_state, hdl)->sd;  in to_sd()
62 /* ------------------------------------------------------------------------ */
71 		return -1;  in wm8739_write()
81 	return -1;  in wm8739_write()
89 	u8 vol_l;	/* +12dB to -34.5dB 1.5dB step (5bit) def:0dB */  in wm8739_s_ctrl()
90 	u8 vol_r;	/* +12dB to -34.5dB 1.5dB step (5bit) def:0dB */  in wm8739_s_ctrl()
93 	switch (ctrl->id) {  in wm8739_s_ctrl()
98 		return -EINVAL;  in wm8739_s_ctrl()
101 	/* normalize ( 65535 to 0 -> 31 to 0 (12dB to -34.5dB) ) */  in wm8739_s_ctrl()
102 	work_l = (min(65536 - state->balance->val, 32768) * state->volume->val) / 32768;  in wm8739_s_ctrl()
103 	work_r = (min(state->balance->val, 32768) * state->volume->val) / 32768;  in wm8739_s_ctrl()
109 	mute = state->mute->val ? 0x80 : 0;  in wm8739_s_ctrl()
111 	/* Volume setting: bits 0-4, 0x1f = 12 dB, 0x00 = -34.5 dB  in wm8739_s_ctrl()
119 /* ------------------------------------------------------------------------ */
125 	state->clock_freq = audiofreq;  in wm8739_s_clock_freq()
126 	/* de-activate */  in wm8739_s_clock_freq()
153 	v4l2_info(sd, "Frequency: %u Hz\n", state->clock_freq);  in wm8739_log_status()
154 	v4l2_ctrl_handler_log_status(&state->hdl, sd->name);  in wm8739_log_status()
158 /* ----------------------------------------------------------------------- */
177 /* ------------------------------------------------------------------------ */
187 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))  in wm8739_probe()
188 		return -EIO;  in wm8739_probe()
191 			client->addr << 1, client->adapter->name);  in wm8739_probe()
193 	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);  in wm8739_probe()
195 		return -ENOMEM;  in wm8739_probe()
196 	sd = &state->sd;  in wm8739_probe()
198 	v4l2_ctrl_handler_init(&state->hdl, 2);  in wm8739_probe()
199 	state->volume = v4l2_ctrl_new_std(&state->hdl, &wm8739_ctrl_ops,  in wm8739_probe()
201 	state->mute = v4l2_ctrl_new_std(&state->hdl, &wm8739_ctrl_ops,  in wm8739_probe()
203 	state->balance = v4l2_ctrl_new_std(&state->hdl, &wm8739_ctrl_ops,  in wm8739_probe()
205 	sd->ctrl_handler = &state->hdl;  in wm8739_probe()
206 	if (state->hdl.error) {  in wm8739_probe()
207 		int err = state->hdl.error;  in wm8739_probe()
209 		v4l2_ctrl_handler_free(&state->hdl);  in wm8739_probe()
212 	v4l2_ctrl_cluster(3, &state->volume);  in wm8739_probe()
214 	state->clock_freq = 48000;  in wm8739_probe()
225 	   Enable Master mode, 24 bit, MSB first/left justified */  in wm8739_probe()
232 	v4l2_ctrl_handler_setup(&state->hdl);  in wm8739_probe()
242 	v4l2_ctrl_handler_free(&state->hdl);  in wm8739_remove()