1 // SPDX-License-Identifier: GPL-2.0-or-later
3     Auvitek AU8522 QAM/8VSB demodulator driver
7     Copyright (C) 2005-2008 Auvitek International, Ltd.
29 /* 16 bit registers, 8 bit values */
33 	u8 buf[] = { (reg >> 8) | 0x80, reg & 0xff, data };  in au8522_writereg()
35 	struct i2c_msg msg = { .addr = state->config.demod_address,  in au8522_writereg()
38 	ret = i2c_transfer(state->i2c, &msg, 1);  in au8522_writereg()
44 	return (ret != 1) ? -1 : 0;  in au8522_writereg()
51 	u8 b0[] = { (reg >> 8) | 0x40, reg & 0xff };  in au8522_readreg()
55 		{ .addr = state->config.demod_address, .flags = 0,  in au8522_readreg()
57 		{ .addr = state->config.demod_address, .flags = I2C_M_RD,  in au8522_readreg()
60 	ret = i2c_transfer(state->i2c, msg, 2);  in au8522_readreg()
71 	struct au8522_state *state = fe->demodulator_priv;  in au8522_i2c_gate_ctrl()
75 	if (state->operational_mode == AU8522_ANALOG_MODE) {  in au8522_i2c_gate_ctrl()
92 	struct au8522_state *state = fe->demodulator_priv;  in au8522_analog_i2c_gate_ctrl()
131 	struct au8522_led_config *led_config = state->config.led_cfg;  in au8522_led_gpio_enable()
134 	/* bail out if we can't control an LED */  in au8522_led_gpio_enable()
135 	if (!led_config || !led_config->gpio_output ||  in au8522_led_gpio_enable()
136 	    !led_config->gpio_output_enable || !led_config->gpio_output_disable)  in au8522_led_gpio_enable()
140 			     (led_config->gpio_output & ~0xc000));  in au8522_led_gpio_enable()
143 		val &= ~((led_config->gpio_output_enable >> 8) & 0xff);  in au8522_led_gpio_enable()
144 		val |=  (led_config->gpio_output_enable & 0xff);  in au8522_led_gpio_enable()
147 		val &= ~((led_config->gpio_output_disable >> 8) & 0xff);  in au8522_led_gpio_enable()
148 		val |=  (led_config->gpio_output_disable & 0xff);  in au8522_led_gpio_enable()
151 			       (led_config->gpio_output & ~0xc000), val);  in au8522_led_gpio_enable()
154 /* led = 0 | off
155  * led = 1 | signal ok
156  * led = 2 | signal strong
157  * led < 0 | only light led if leds are currently off
159 int au8522_led_ctrl(struct au8522_state *state, int led)  in au8522_led_ctrl()  argument
161 	struct au8522_led_config *led_config = state->config.led_cfg;  in au8522_led_ctrl()
164 	/* bail out if we can't control an LED */  in au8522_led_ctrl()
165 	if (!led_config || !led_config->gpio_leds ||  in au8522_led_ctrl()
166 	    !led_config->num_led_states || !led_config->led_states)  in au8522_led_ctrl()
169 	if (led < 0) {  in au8522_led_ctrl()
170 		/* if LED is already lit, then leave it as-is */  in au8522_led_ctrl()
171 		if (state->led_state)  in au8522_led_ctrl()
174 			led *= -1;  in au8522_led_ctrl()
177 	/* toggle LED if changing state */  in au8522_led_ctrl()
178 	if (state->led_state != led) {  in au8522_led_ctrl()
181 		dprintk("%s: %d\n", __func__, led);  in au8522_led_ctrl()
186 				     (led_config->gpio_leds & ~0xc000));  in au8522_led_ctrl()
189 		for (i = 0; i < led_config->num_led_states; i++)  in au8522_led_ctrl()
190 			val &= ~led_config->led_states[i];  in au8522_led_ctrl()
192 		/* set selected LED state */  in au8522_led_ctrl()
193 		if (led < led_config->num_led_states)  in au8522_led_ctrl()
194 			val |= led_config->led_states[led];  in au8522_led_ctrl()
195 		else if (led_config->num_led_states)  in au8522_led_ctrl()
197 			led_config->led_states[led_config->num_led_states - 1];  in au8522_led_ctrl()
200 				      (led_config->gpio_leds & ~0xc000), val);  in au8522_led_ctrl()
204 		state->led_state = led;  in au8522_led_ctrl()
206 		if (led == 0)  in au8522_led_ctrl()
216 	struct au8522_state *state = fe->demodulator_priv;  in au8522_init()
219 	state->operational_mode = AU8522_DIGITAL_MODE;  in au8522_init()
224 	state->current_frequency = 0;  in au8522_init()
225 	state->current_modulation = VSB_8;  in au8522_init()
237 	struct au8522_state *state = fe->demodulator_priv;  in au8522_sleep()
241 	if (state->operational_mode == AU8522_ANALOG_MODE) {  in au8522_sleep()
249 	/* turn off led */  in au8522_sleep()
255 	state->current_frequency = 0;  in au8522_sleep()
264 MODULE_DESCRIPTION("Auvitek AU8522 QAM-B/ATSC Demodulator driver");