forked from ~ljy/RK356X_SDK_RELEASE
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2024-01-31 f70575805708cabdedea7498aaa3f710fde4d920 
 kernel/sound/soc/codecs/cs4270.c
....@@ -29,8 +29,8 @@
2929 #include <linux/i2c.h>
3030 #include <linux/delay.h>
3131 #include <linux/regulator/consumer.h>
32
+#include <linux/gpio/consumer.h>
3233 #include <linux/of_device.h>
33
-#include <linux/of_gpio.h>
3434 
3535 /*
3636  * The codec isn't really big-endian or little-endian, since the I2S
....@@ -137,6 +137,9 @@
137137 
138138 	/* power domain regulators */
139139 	struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
140
+
141
+	/* reset gpio */
142
+	struct gpio_desc *reset_gpio;
140143 };
141144 
142145 static const struct snd_soc_dapm_widget cs4270_dapm_widgets[] = {
....@@ -352,7 +355,7 @@
352355 
353356 	/* Set the sample rate */
354357 
355
-	reg = snd_soc_component_read32(component, CS4270_MODE);
358
+	reg = snd_soc_component_read(component, CS4270_MODE);
356359 	reg &= ~(CS4270_MODE_SPEED_MASK | CS4270_MODE_DIV_MASK);
357360 	reg |= cs4270_mode_ratios[i].mclk;
358361 
....@@ -369,7 +372,7 @@
369372 
370373 	/* Set the DAI format */
371374 
372
-	reg = snd_soc_component_read32(component, CS4270_FORMAT);
375
+	reg = snd_soc_component_read(component, CS4270_FORMAT);
373376 	reg &= ~(CS4270_FORMAT_DAC_MASK | CS4270_FORMAT_ADC_MASK);
374377 
375378 	switch (cs4270->mode) {
....@@ -403,13 +406,13 @@
403406  * board does not have the MUTEA or MUTEB pins connected to such circuitry,
404407  * then this function will do nothing.
405408  */
406
-static int cs4270_dai_mute(struct snd_soc_dai *dai, int mute)
409
+static int cs4270_dai_mute(struct snd_soc_dai *dai, int mute, int direction)
407410 {
408411 	struct snd_soc_component *component = dai->component;
409412 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);
410413 	int reg6;
411414 
412
-	reg6 = snd_soc_component_read32(component, CS4270_MUTE);
415
+	reg6 = snd_soc_component_read(component, CS4270_MUTE);
413416 
414417 	if (mute)
415418 		reg6 |= CS4270_MUTE_DAC_A | CS4270_MUTE_DAC_B;
....@@ -468,7 +471,8 @@
468471 	.hw_params	= cs4270_hw_params,
469472 	.set_sysclk	= cs4270_set_dai_sysclk,
470473 	.set_fmt	= cs4270_set_dai_fmt,
471
-	.digital_mute	= cs4270_dai_mute,
474
+	.mute_stream	= cs4270_dai_mute,
475
+	.no_capture_mute = 1,
472476 };
473477 
474478 static struct snd_soc_dai_driver cs4270_dai = {
....@@ -496,7 +500,7 @@
496500 
497501 /**
498502  * cs4270_probe - ASoC probe function
499
- * @pdev: platform device
503
+ * @component: ASoC component
500504  *
501505  * This function is called when ASoC has all the pieces it needs to
502506  * instantiate a sound driver.
....@@ -537,7 +541,7 @@
537541 
538542 /**
539543  * cs4270_remove - ASoC remove function
540
- * @pdev: platform device
544
+ * @component: ASoC component
541545  *
542546  * This function is the counterpart to cs4270_probe().
543547  */
....@@ -564,7 +568,7 @@
564568 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);
565569 	int reg, ret;
566570 
567
-	reg = snd_soc_component_read32(component, CS4270_PWRCTL) | CS4270_PWRCTL_PDN_ALL;
571
+	reg = snd_soc_component_read(component, CS4270_PWRCTL) | CS4270_PWRCTL_PDN_ALL;
568572 	if (reg < 0)
569573 		return reg;
570574 
....@@ -596,7 +600,7 @@
596600 	regcache_sync(cs4270->regmap);
597601 
598602 	/* ... then disable the power-down bits */
599
-	reg = snd_soc_component_read32(component, CS4270_PWRCTL);
603
+	reg = snd_soc_component_read(component, CS4270_PWRCTL);
600604 	reg &= ~CS4270_PWRCTL_PDN_ALL;
601605 
602606 	return snd_soc_component_write(component, CS4270_PWRCTL, reg);
....@@ -649,6 +653,22 @@
649653 };
650654 
651655 /**
656
+ * cs4270_i2c_remove - deinitialize the I2C interface of the CS4270
657
+ * @i2c_client: the I2C client object
658
+ *
659
+ * This function puts the chip into low power mode when the i2c device
660
+ * is removed.
661
+ */
662
+static int cs4270_i2c_remove(struct i2c_client *i2c_client)
663
+{
664
+	struct cs4270_private *cs4270 = i2c_get_clientdata(i2c_client);
665
+
666
+	gpiod_set_value_cansleep(cs4270->reset_gpio, 0);
667
+
668
+	return 0;
669
+}
670
+
671
+/**
652672  * cs4270_i2c_probe - initialize the I2C interface of the CS4270
653673  * @i2c_client: the I2C client object
654674  * @id: the I2C device ID (ignored)
....@@ -659,7 +679,6 @@
659679 static int cs4270_i2c_probe(struct i2c_client *i2c_client,
660680 	const struct i2c_device_id *id)
661681 {
662
-	struct device_node *np = i2c_client->dev.of_node;
663682 	struct cs4270_private *cs4270;
664683 	unsigned int val;
665684 	int ret, i;
....@@ -679,20 +698,21 @@
679698 	if (ret < 0)
680699 		return ret;
681700 
682
-	/* See if we have a way to bring the codec out of reset */
683
-	if (np) {
684
-		enum of_gpio_flags flags;
685
-		int gpio = of_get_named_gpio_flags(np, "reset-gpio", 0, &flags);
686
-
687
-		if (gpio_is_valid(gpio)) {
688
-			ret = devm_gpio_request_one(&i2c_client->dev, gpio,
689
-				     flags & OF_GPIO_ACTIVE_LOW ?
690
-					GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH,
691
-				     "cs4270 reset");
692
-			if (ret < 0)
693
-				return ret;
694
-		}
701
+	/* reset the device */
702
+	cs4270->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev, "reset",
703
+						     GPIOD_OUT_LOW);
704
+	if (IS_ERR(cs4270->reset_gpio)) {
705
+		dev_dbg(&i2c_client->dev, "Error getting CS4270 reset GPIO\n");
706
+		return PTR_ERR(cs4270->reset_gpio);
695707 	}
708
+
709
+	if (cs4270->reset_gpio) {
710
+		dev_dbg(&i2c_client->dev, "Found reset GPIO\n");
711
+		gpiod_set_value_cansleep(cs4270->reset_gpio, 1);
712
+	}
713
+
714
+	/* Sleep 500ns before i2c communications */
715
+	ndelay(500);
696716 
697717 	cs4270->regmap = devm_regmap_init_i2c(i2c_client, &cs4270_regmap);
698718 	if (IS_ERR(cs4270->regmap))
....@@ -745,6 +765,7 @@
745765 	},
746766 	.id_table = cs4270_id,
747767 	.probe = cs4270_i2c_probe,
768
+	.remove = cs4270_i2c_remove,
748769 };
749770 
750771 module_i2c_driver(cs4270_i2c_driver);