[ALSA] add CMI8788 driver

Add the snd-oxygen driver for the C-Media CMI8788 (Oxygen) chip, used on
the Asound A-8788, AuzenTech X-Meridian, Bgears b-Enspirer,
Club3D Theatron DTS, HT-Omega Claro, Razer Barracuda AC-1,
Sondigo Inferno, and TempoTec HIFIER sound cards.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 167 insertions, 0 deletions

diff --git a/sound/pci/oxygen/oxygen.h b/sound/pci/oxygen/oxygen.h
new file mode 100644
index 000000000000..248f7ed22fda
--- /dev/null
+++ b/sound/pci/oxygen/oxygen.h
@@ -0,0 +1,167 @@
+#ifndef OXYGEN_H_INCLUDED
+#define OXYGEN_H_INCLUDED
+
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include "oxygen_regs.h"
+
+/* 1 << PCM_x == OXYGEN_CHANNEL_x */
+#define PCM_A           0
+#define PCM_B           1
+#define PCM_C           2
+#define PCM_SPDIF       3
+#define PCM_MULTICH     4
+#define PCM_AC97        5
+#define PCM_COUNT       6
+
+#define OXYGEN_PCI_SUBID(sv, sd) \
+        .vendor = PCI_VENDOR_ID_CMEDIA, \
+        .device = 0x8788, \
+        .subvendor = sv, \
+        .subdevice = sd
+
+struct pci_dev;
+struct snd_card;
+struct snd_pcm_substream;
+struct snd_pcm_hw_params;
+struct snd_rawmidi;
+struct oxygen_model;
+
+struct oxygen {
+        unsigned long addr;
+        spinlock_t reg_lock;
+        struct mutex mutex;
+        struct snd_card *card;
+        struct pci_dev *pci;
+        struct snd_rawmidi *midi;
+        int irq;
+        const struct oxygen_model *model;
+        unsigned int interrupt_mask;
+        u8 dac_volume[8];
+        u8 dac_mute;
+        u8 pcm_active;
+        u8 pcm_running;
+        u8 dac_routing;
+        u8 spdif_playback_enable;
+        u8 ak4396_reg1;
+        u8 revision;
+        u8 has_2nd_ac97_codec;
+        u32 spdif_bits;
+        u32 spdif_pcm_bits;
+        struct snd_pcm_substream *streams[PCM_COUNT];
+        struct snd_kcontrol *spdif_pcm_ctl;
+        struct snd_kcontrol *spdif_input_bits_ctl;
+        struct work_struct spdif_input_bits_work;
+};
+
+struct oxygen_model {
+        const char *shortname;
+        const char *longname;
+        const char *chip;
+        struct module *owner;
+        void (*init)(struct oxygen *chip);
+        int (*mixer_init)(struct oxygen *chip);
+        void (*cleanup)(struct oxygen *chip);
+        void (*set_dac_params)(struct oxygen *chip,
+                               struct snd_pcm_hw_params *params);
+        void (*set_adc_params)(struct oxygen *chip,
+                               struct snd_pcm_hw_params *params);
+        void (*update_dac_volume)(struct oxygen *chip);
+        void (*update_dac_mute)(struct oxygen *chip);
+        const unsigned int *dac_tlv;
+        u8 record_from_dma_b;
+        u8 cd_in_from_video_in;
+        u8 dac_minimum_volume;
+};
+
+/* oxygen_lib.c */
+
+int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
+                     const struct oxygen_model *model);
+void oxygen_pci_remove(struct pci_dev *pci);
+
+/* oxygen_mixer.c */
+
+int oxygen_mixer_init(struct oxygen *chip);
+void oxygen_update_dac_routing(struct oxygen *chip);
+void oxygen_update_spdif_source(struct oxygen *chip);
+
+/* oxygen_pcm.c */
+
+int oxygen_pcm_init(struct oxygen *chip);
+
+/* oxygen_io.c */
+
+u8 oxygen_read8(struct oxygen *chip, unsigned int reg);
+u16 oxygen_read16(struct oxygen *chip, unsigned int reg);
+u32 oxygen_read32(struct oxygen *chip, unsigned int reg);
+void oxygen_write8(struct oxygen *chip, unsigned int reg, u8 value);
+void oxygen_write16(struct oxygen *chip, unsigned int reg, u16 value);
+void oxygen_write32(struct oxygen *chip, unsigned int reg, u32 value);
+void oxygen_write8_masked(struct oxygen *chip, unsigned int reg,
+                          u8 value, u8 mask);
+void oxygen_write16_masked(struct oxygen *chip, unsigned int reg,
+                           u16 value, u16 mask);
+void oxygen_write32_masked(struct oxygen *chip, unsigned int reg,
+                           u32 value, u32 mask);
+
+u16 oxygen_read_ac97(struct oxygen *chip, unsigned int codec,
+                     unsigned int index);
+void oxygen_write_ac97(struct oxygen *chip, unsigned int codec,
+                       unsigned int index, u16 data);
+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);
+
+static inline void oxygen_set_bits8(struct oxygen *chip,
+                                    unsigned int reg, u8 value)
+{
+        oxygen_write8_masked(chip, reg, value, value);
+}
+
+static inline void oxygen_set_bits16(struct oxygen *chip,
+                                     unsigned int reg, u16 value)
+{
+        oxygen_write16_masked(chip, reg, value, value);
+}
+
+static inline void oxygen_set_bits32(struct oxygen *chip,
+                                     unsigned int reg, u32 value)
+{
+        oxygen_write32_masked(chip, reg, value, value);
+}
+
+static inline void oxygen_clear_bits8(struct oxygen *chip,
+                                      unsigned int reg, u8 value)
+{
+        oxygen_write8_masked(chip, reg, 0, value);
+}
+
+static inline void oxygen_clear_bits16(struct oxygen *chip,
+                                       unsigned int reg, u16 value)
+{
+        oxygen_write16_masked(chip, reg, 0, value);
+}
+
+static inline void oxygen_clear_bits32(struct oxygen *chip,
+                                       unsigned int reg, u32 value)
+{
+        oxygen_write32_masked(chip, reg, 0, value);
+}
+
+static inline void oxygen_ac97_set_bits(struct oxygen *chip, unsigned int codec,
+                                        unsigned int index, u16 value)
+{
+        oxygen_write_ac97_masked(chip, codec, index, value, value);
+}
+
+static inline void oxygen_ac97_clear_bits(struct oxygen *chip,
+                                          unsigned int codec,
+                                          unsigned int index, u16 value)
+{
+        oxygen_write_ac97_masked(chip, codec, index, 0, value);
+}
+
+#endif