ASoC: codecs: Add da7219 codec driver

This adds support for the DA7219 audio codec with built-in advanced
accessory detect features.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 212 insertions, 0 deletions

diff --git a/sound/soc/codecs/da7219-aad.h b/sound/soc/codecs/da7219-aad.h
new file mode 100644
index 0000000..4fccf67
--- /dev/null
+++ b/sound/soc/codecs/da7219-aad.h
@@ -0,0 +1,212 @@
+/*
+ * da7219-aad.h - DA7322 ASoC AAD Driver
+ *
+ * Copyright (c) 2015 Dialog Semiconductor Ltd.
+ *
+ * Author: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
+ *
+ * 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.
+ */
+
+#ifndef __DA7219_AAD_H
+#define __DA7219_AAD_H
+
+#include <linux/timer.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <sound/da7219-aad.h>
+
+/*
+ * Registers
+ */
+
+#define DA7219_ACCDET_STATUS_A		0xC0
+#define DA7219_ACCDET_STATUS_B		0xC1
+#define DA7219_ACCDET_IRQ_EVENT_A	0xC2
+#define DA7219_ACCDET_IRQ_EVENT_B	0xC3
+#define DA7219_ACCDET_IRQ_MASK_A	0xC4
+#define DA7219_ACCDET_IRQ_MASK_B	0xC5
+#define DA7219_ACCDET_CONFIG_1		0xC6
+#define DA7219_ACCDET_CONFIG_2		0xC7
+#define DA7219_ACCDET_CONFIG_3		0xC8
+#define DA7219_ACCDET_CONFIG_4		0xC9
+#define DA7219_ACCDET_CONFIG_5		0xCA
+#define DA7219_ACCDET_CONFIG_6		0xCB
+#define DA7219_ACCDET_CONFIG_7		0xCC
+#define DA7219_ACCDET_CONFIG_8		0xCD
+
+
+/*
+ * Bit Fields
+ */
+
+/* DA7219_ACCDET_STATUS_A = 0xC0 */
+#define DA7219_JACK_INSERTION_STS_SHIFT	0
+#define DA7219_JACK_INSERTION_STS_MASK	(0x1 << 0)
+#define DA7219_JACK_TYPE_STS_SHIFT	1
+#define DA7219_JACK_TYPE_STS_MASK	(0x1 << 1)
+#define DA7219_JACK_PIN_ORDER_STS_SHIFT	2
+#define DA7219_JACK_PIN_ORDER_STS_MASK	(0x1 << 2)
+#define DA7219_MICBIAS_UP_STS_SHIFT	3
+#define DA7219_MICBIAS_UP_STS_MASK	(0x1 << 3)
+
+/* DA7219_ACCDET_STATUS_B = 0xC1 */
+#define DA7219_BUTTON_TYPE_STS_SHIFT	0
+#define DA7219_BUTTON_TYPE_STS_MASK	(0xFF << 0)
+
+/* DA7219_ACCDET_IRQ_EVENT_A = 0xC2 */
+#define DA7219_E_JACK_INSERTED_SHIFT		0
+#define DA7219_E_JACK_INSERTED_MASK		(0x1 << 0)
+#define DA7219_E_JACK_REMOVED_SHIFT		1
+#define DA7219_E_JACK_REMOVED_MASK		(0x1 << 1)
+#define DA7219_E_JACK_DETECT_COMPLETE_SHIFT	2
+#define DA7219_E_JACK_DETECT_COMPLETE_MASK	(0x1 << 2)
+
+/* DA7219_ACCDET_IRQ_EVENT_B = 0xC3 */
+#define DA7219_E_BUTTON_A_PRESSED_SHIFT		0
+#define DA7219_E_BUTTON_A_PRESSED_MASK		(0x1 << 0)
+#define DA7219_E_BUTTON_B_PRESSED_SHIFT		1
+#define DA7219_E_BUTTON_B_PRESSED_MASK		(0x1 << 1)
+#define DA7219_E_BUTTON_C_PRESSED_SHIFT		2
+#define DA7219_E_BUTTON_C_PRESSED_MASK		(0x1 << 2)
+#define DA7219_E_BUTTON_D_PRESSED_SHIFT		3
+#define DA7219_E_BUTTON_D_PRESSED_MASK		(0x1 << 3)
+#define DA7219_E_BUTTON_D_RELEASED_SHIFT	4
+#define DA7219_E_BUTTON_D_RELEASED_MASK		(0x1 << 4)
+#define DA7219_E_BUTTON_C_RELEASED_SHIFT	5
+#define DA7219_E_BUTTON_C_RELEASED_MASK		(0x1 << 5)
+#define DA7219_E_BUTTON_B_RELEASED_SHIFT	6
+#define DA7219_E_BUTTON_B_RELEASED_MASK		(0x1 << 6)
+#define DA7219_E_BUTTON_A_RELEASED_SHIFT	7
+#define DA7219_E_BUTTON_A_RELEASED_MASK		(0x1 << 7)
+
+/* DA7219_ACCDET_IRQ_MASK_A = 0xC4 */
+#define DA7219_M_JACK_INSERTED_SHIFT		0
+#define DA7219_M_JACK_INSERTED_MASK		(0x1 << 0)
+#define DA7219_M_JACK_REMOVED_SHIFT		1
+#define DA7219_M_JACK_REMOVED_MASK		(0x1 << 1)
+#define DA7219_M_JACK_DETECT_COMPLETE_SHIFT	2
+#define DA7219_M_JACK_DETECT_COMPLETE_MASK	(0x1 << 2)
+
+/* DA7219_ACCDET_IRQ_MASK_B = 0xC5 */
+#define DA7219_M_BUTTON_A_PRESSED_SHIFT		0
+#define DA7219_M_BUTTON_A_PRESSED_MASK		(0x1 << 0)
+#define DA7219_M_BUTTON_B_PRESSED_SHIFT		1
+#define DA7219_M_BUTTON_B_PRESSED_MASK		(0x1 << 1)
+#define DA7219_M_BUTTON_C_PRESSED_SHIFT		2
+#define DA7219_M_BUTTON_C_PRESSED_MASK		(0x1 << 2)
+#define DA7219_M_BUTTON_D_PRESSED_SHIFT		3
+#define DA7219_M_BUTTON_D_PRESSED_MASK		(0x1 << 3)
+#define DA7219_M_BUTTON_D_RELEASED_SHIFT	4
+#define DA7219_M_BUTTON_D_RELEASED_MASK		(0x1 << 4)
+#define DA7219_M_BUTTON_C_RELEASED_SHIFT	5
+#define DA7219_M_BUTTON_C_RELEASED_MASK		(0x1 << 5)
+#define DA7219_M_BUTTON_B_RELEASED_SHIFT	6
+#define DA7219_M_BUTTON_B_RELEASED_MASK		(0x1 << 6)
+#define DA7219_M_BUTTON_A_RELEASED_SHIFT	7
+#define DA7219_M_BUTTON_A_RELEASED_MASK		(0x1 << 7)
+
+/* DA7219_ACCDET_CONFIG_1 = 0xC6 */
+#define DA7219_ACCDET_EN_SHIFT		0
+#define DA7219_ACCDET_EN_MASK		(0x1 << 0)
+#define DA7219_BUTTON_CONFIG_SHIFT	1
+#define DA7219_BUTTON_CONFIG_MASK	(0x7 << 1)
+#define DA7219_MIC_DET_THRESH_SHIFT	4
+#define DA7219_MIC_DET_THRESH_MASK	(0x3 << 4)
+#define DA7219_JACK_TYPE_DET_EN_SHIFT	6
+#define DA7219_JACK_TYPE_DET_EN_MASK	(0x1 << 6)
+#define DA7219_PIN_ORDER_DET_EN_SHIFT	7
+#define DA7219_PIN_ORDER_DET_EN_MASK	(0x1 << 7)
+
+/* DA7219_ACCDET_CONFIG_2 = 0xC7 */
+#define DA7219_ACCDET_PAUSE_SHIFT	0
+#define DA7219_ACCDET_PAUSE_MASK	(0x1 << 0)
+#define DA7219_JACKDET_DEBOUNCE_SHIFT	1
+#define DA7219_JACKDET_DEBOUNCE_MASK	(0x7 << 1)
+#define DA7219_JACK_DETECT_RATE_SHIFT	4
+#define DA7219_JACK_DETECT_RATE_MASK	(0x3 << 4)
+#define DA7219_JACKDET_REM_DEB_SHIFT	6
+#define DA7219_JACKDET_REM_DEB_MASK	(0x3 << 6)
+
+/* DA7219_ACCDET_CONFIG_3 = 0xC8 */
+#define DA7219_A_D_BUTTON_THRESH_SHIFT	0
+#define DA7219_A_D_BUTTON_THRESH_MASK	(0xFF << 0)
+
+/* DA7219_ACCDET_CONFIG_4 = 0xC9 */
+#define DA7219_D_B_BUTTON_THRESH_SHIFT	0
+#define DA7219_D_B_BUTTON_THRESH_MASK	(0xFF << 0)
+
+/* DA7219_ACCDET_CONFIG_5 = 0xCA */
+#define DA7219_B_C_BUTTON_THRESH_SHIFT	0
+#define DA7219_B_C_BUTTON_THRESH_MASK	(0xFF << 0)
+
+/* DA7219_ACCDET_CONFIG_6 = 0xCB */
+#define DA7219_C_MIC_BUTTON_THRESH_SHIFT	0
+#define DA7219_C_MIC_BUTTON_THRESH_MASK		(0xFF << 0)
+
+/* DA7219_ACCDET_CONFIG_7 = 0xCC */
+#define DA7219_BUTTON_AVERAGE_SHIFT	0
+#define DA7219_BUTTON_AVERAGE_MASK	(0x3 << 0)
+#define DA7219_ADC_1_BIT_REPEAT_SHIFT	2
+#define DA7219_ADC_1_BIT_REPEAT_MASK	(0x3 << 2)
+#define DA7219_PIN_ORDER_FORCE_SHIFT	4
+#define DA7219_PIN_ORDER_FORCE_MASK	(0x1 << 4)
+#define DA7219_JACK_TYPE_FORCE_SHIFT	5
+#define DA7219_JACK_TYPE_FORCE_MASK	(0x1 << 5)
+
+/* DA7219_ACCDET_CONFIG_8 = 0xCD */
+#define DA7219_HPTEST_EN_SHIFT		0
+#define DA7219_HPTEST_EN_MASK		(0x1 << 0)
+#define DA7219_HPTEST_RES_SEL_SHIFT	1
+#define DA7219_HPTEST_RES_SEL_MASK	(0x3 << 1)
+#define DA7219_HPTEST_RES_SEL_1KOHMS	(0x0 << 1)
+#define DA7219_HPTEST_COMP_SHIFT	4
+#define DA7219_HPTEST_COMP_MASK		(0x1 << 4)
+
+
+#define DA7219_AAD_MAX_BUTTONS		4
+#define DA7219_AAD_REPORT_ALL_MASK	(SND_JACK_MECHANICAL |			\
+					 SND_JACK_HEADSET | SND_JACK_LINEOUT |	\
+					 SND_JACK_BTN_0 | SND_JACK_BTN_1 |	\
+					 SND_JACK_BTN_2 | SND_JACK_BTN_3)
+
+#define DA7219_AAD_MICBIAS_CHK_DELAY	10
+#define DA7219_AAD_MICBIAS_CHK_RETRIES	5
+
+#define DA7219_AAD_HPTEST_RAMP_FREQ	0x28
+#define DA7219_AAD_HPTEST_PERIOD	65
+
+enum da7219_aad_event_regs {
+	DA7219_AAD_IRQ_REG_A = 0,
+	DA7219_AAD_IRQ_REG_B,
+	DA7219_AAD_IRQ_REG_MAX,
+};
+
+/* Private data */
+struct da7219_aad_priv {
+	struct snd_soc_codec *codec;
+	int irq;
+
+	u8 micbias_pulse_lvl;
+	u32 micbias_pulse_time;
+
+	u8 btn_cfg;
+
+	struct work_struct btn_det_work;
+	struct work_struct hptest_work;
+
+	struct snd_soc_jack *jack;
+	bool jack_inserted;
+};
+
+/* AAD control */
+void da7219_aad_jack_det(struct snd_soc_codec *codec, struct snd_soc_jack *jack);
+
+/* Init/Exit */
+int da7219_aad_init(struct snd_soc_codec *codec);
+void da7219_aad_exit(struct snd_soc_codec *codec);
+
+#endif /* __DA7219_AAD_H */