Merge branch 'xonar-dg' of git://git.alsa-project.org/alsa-kprivate into for-next

This completes the hardware support for the Asus Xonar DG/DGX cards,
and makes them actually usable.

This is v4 of Roman's patch set with some small formatting changes.

sound/pci/oxygen/Makefile

 snd-oxygen-lib-objs := oxygen_io.o oxygen_lib.o oxygen_mixer.o oxygen_pcm.o
-snd-oxygen-objs := oxygen.o xonar_dg.o
+snd-oxygen-objs := oxygen.o xonar_dg_mixer.o xonar_dg.o
 snd-virtuoso-objs := virtuoso.o xonar_lib.o \
 	xonar_pcm179x.o xonar_cs43xx.o xonar_wm87x6.o xonar_hdmi.o
 

sound/pci/oxygen/cs4245.h

@@ -102,6 +102,9 @@
 #define CS4245_ADC_OVFL		0x02
 #define CS4245_ADC_UNDRFL	0x01
 
+#define CS4245_SPI_ADDRESS_S	(0x9e << 16)
+#define CS4245_SPI_WRITE_S	(0 << 16)
 
-#define CS4245_SPI_ADDRESS	(0x9e << 16)
-#define CS4245_SPI_WRITE	(0 << 16)
+#define CS4245_SPI_ADDRESS	0x9e
+#define CS4245_SPI_WRITE	0
+#define CS4245_SPI_READ		1

sound/pci/oxygen/oxygen.h

@@ -198,7 +198,7 @@ void oxygen_write_ac97(struct oxygen *chip, unsigned int codec,
 void oxygen_write_ac97_masked(struct oxygen *chip, unsigned int codec,
 			      unsigned int index, u16 data, u16 mask);
 
-void oxygen_write_spi(struct oxygen *chip, u8 control, unsigned int data);
+int oxygen_write_spi(struct oxygen *chip, u8 control, unsigned int data);
 void oxygen_write_i2c(struct oxygen *chip, u8 device, u8 map, u8 data);
 
 void oxygen_reset_uart(struct oxygen *chip);

sound/pci/oxygen/oxygen_io.c

@@ -194,23 +194,36 @@ void oxygen_write_ac97_masked(struct oxygen *chip, unsigned int codec,
 }
 EXPORT_SYMBOL(oxygen_write_ac97_masked);
 
-void oxygen_write_spi(struct oxygen *chip, u8 control, unsigned int data)
+static int oxygen_wait_spi(struct oxygen *chip)
 {
 	unsigned int count;
 
-	/* should not need more than 30.72 us (24 * 1.28 us) */
-	count = 10;
-	while ((oxygen_read8(chip, OXYGEN_SPI_CONTROL) & OXYGEN_SPI_BUSY)
-	       && count > 0) {
+	/*
+	 * Higher timeout to be sure: 200 us;
+	 * actual transaction should not need more than 40 us.
+	 */
+	for (count = 50; count > 0; count--) {
 		udelay(4);
-		--count;
+		if ((oxygen_read8(chip, OXYGEN_SPI_CONTROL) &
+						OXYGEN_SPI_BUSY) == 0)
+			return 0;
 	}
+	snd_printk(KERN_ERR "oxygen: SPI wait timeout\n");
+	return -EIO;
+}
 
+int oxygen_write_spi(struct oxygen *chip, u8 control, unsigned int data)
+{
+	/*
+	 * We need to wait AFTER initiating the SPI transaction,
+	 * otherwise read operations will not work.
+	 */
 	oxygen_write8(chip, OXYGEN_SPI_DATA1, data);
 	oxygen_write8(chip, OXYGEN_SPI_DATA2, data >> 8);
 	if (control & OXYGEN_SPI_DATA_LENGTH_3)
 		oxygen_write8(chip, OXYGEN_SPI_DATA3, data >> 16);
 	oxygen_write8(chip, OXYGEN_SPI_CONTROL, control);
+	return oxygen_wait_spi(chip);
 }
 EXPORT_SYMBOL(oxygen_write_spi);
 

sound/pci/oxygen/oxygen_mixer.c

@@ -190,6 +190,7 @@ void oxygen_update_dac_routing(struct oxygen *chip)
 	if (chip->model.update_center_lfe_mix)
 		chip->model.update_center_lfe_mix(chip, chip->dac_routing > 2);
 }
+EXPORT_SYMBOL(oxygen_update_dac_routing);
 
 static int upmix_put(struct snd_kcontrol *ctl, struct snd_ctl_elem_value *value)
 {

sound/pci/oxygen/oxygen_regs.h

@@ -318,6 +318,7 @@
 #define  OXYGEN_PLAY_MUTE23		0x0002
 #define  OXYGEN_PLAY_MUTE45		0x0004
 #define  OXYGEN_PLAY_MUTE67		0x0008
+#define  OXYGEN_PLAY_MUTE_MASK		0x000f
 #define  OXYGEN_PLAY_MULTICH_MASK	0x0010
 #define  OXYGEN_PLAY_MULTICH_I2S_DAC	0x0000
 #define  OXYGEN_PLAY_MULTICH_AC97	0x0010

sound/pci/oxygen/xonar_dg.h

@@ -3,6 +3,54 @@
 
 #include "oxygen.h"
 
+#define GPIO_MAGIC		0x0008
+#define GPIO_HP_DETECT		0x0010
+#define GPIO_INPUT_ROUTE	0x0060
+#define GPIO_HP_REAR		0x0080
+#define GPIO_OUTPUT_ENABLE	0x0100
+
+#define CAPTURE_SRC_MIC		0
+#define CAPTURE_SRC_FP_MIC	1
+#define CAPTURE_SRC_LINE	2
+#define CAPTURE_SRC_AUX		3
+
+#define PLAYBACK_DST_HP		0
+#define PLAYBACK_DST_HP_FP	1
+#define PLAYBACK_DST_MULTICH	2
+
+enum cs4245_shadow_operation {
+	CS4245_SAVE_TO_SHADOW,
+	CS4245_LOAD_FROM_SHADOW
+};
+
+struct dg {
+	/* shadow copy of the CS4245 register space */
+	unsigned char cs4245_shadow[17];
+	/* output select: headphone/speakers */
+	unsigned char output_sel;
+	/* volumes for all capture sources */
+	char input_vol[4][2];
+	/* input select: mic/fp mic/line/aux */
+	unsigned char input_sel;
+};
+
+/* Xonar DG control routines */
+int cs4245_write_spi(struct oxygen *chip, u8 reg);
+int cs4245_read_spi(struct oxygen *chip, u8 reg);
+int cs4245_shadow_control(struct oxygen *chip, enum cs4245_shadow_operation op);
+void dg_init(struct oxygen *chip);
+void set_cs4245_dac_params(struct oxygen *chip,
+				  struct snd_pcm_hw_params *params);
+void set_cs4245_adc_params(struct oxygen *chip,
+				  struct snd_pcm_hw_params *params);
+unsigned int adjust_dg_dac_routing(struct oxygen *chip,
+					  unsigned int play_routing);
+void dump_cs4245_registers(struct oxygen *chip,
+				struct snd_info_buffer *buffer);
+void dg_suspend(struct oxygen *chip);
+void dg_resume(struct oxygen *chip);
+void dg_cleanup(struct oxygen *chip);
+
 extern struct oxygen_model model_xonar_dg;
 
 #endif