1 files changed, 284 insertions, 0 deletions

diff --git a/sound/oss/dmasound/tas_common.h b/sound/oss/dmasound/tas_common.h
new file mode 100644
index 000000000000..3a6d48666db0
--- /dev/null
+++ b/sound/oss/dmasound/tas_common.h
@@ -0,0 +1,284 @@
+#ifndef _TAS_COMMON_H_
+#define _TAS_COMMON_H_
+
+#include <linux/i2c.h>
+#include <linux/soundcard.h>
+#include <asm/string.h>
+
+#define I2C_DRIVERID_TAS_BASE   (0xFEBA)
+
+#define SET_4_20(shadow, offset, val)                        \
+        do {                                                 \
+                (shadow)[(offset)+0] = ((val) >> 16) & 0xff; \
+                (shadow)[(offset)+1] = ((val) >> 8)  & 0xff; \
+                (shadow)[(offset)+2] = ((val) >> 0)  & 0xff; \
+        } while (0)
+
+#define GET_4_20(shadow, offset)                             \
+        (((u_int)((shadow)[(offset)+0]) << 16) |             \
+         ((u_int)((shadow)[(offset)+1]) <<  8) |             \
+         ((u_int)((shadow)[(offset)+2]) <<  0))
+
+
+#define TAS_BIQUAD_FAST_LOAD 0x01
+
+#define TAS_DRCE_ENABLE           0x01
+#define TAS_DRCE_ABOVE_RATIO      0x02
+#define TAS_DRCE_BELOW_RATIO      0x04
+#define TAS_DRCE_THRESHOLD        0x08
+#define TAS_DRCE_ENERGY           0x10
+#define TAS_DRCE_ATTACK           0x20
+#define TAS_DRCE_DECAY            0x40
+
+#define TAS_DRCE_ALL              0x7f
+
+
+#define TAS_OUTPUT_HEADPHONES     0x00
+#define TAS_OUTPUT_INTERNAL_SPKR  0x01
+#define TAS_OUTPUT_EXTERNAL_SPKR  0x02
+
+
+union tas_biquad_t {
+        struct {
+                int b0,b1,b2,a1,a2;
+        } coeff;
+        int buf[5];
+};
+
+struct tas_biquad_ctrl_t {
+        u_int channel:4;
+        u_int filter:4;
+
+        union tas_biquad_t data;
+};
+
+struct tas_biquad_ctrl_list_t {
+        int flags;
+        int filter_count;
+        struct tas_biquad_ctrl_t biquads[0];
+};
+
+struct tas_ratio_t {
+        unsigned short val;    /* 8.8                        */
+        unsigned short expand; /* 0 = compress, !0 = expand. */
+};
+
+struct tas_drce_t {
+        unsigned short enable;
+        struct tas_ratio_t above;
+        struct tas_ratio_t below;
+        short threshold;       /* dB,       8.8 signed    */
+        unsigned short energy; /* seconds,  4.12 unsigned */
+        unsigned short attack; /* seconds,  4.12 unsigned */
+        unsigned short decay;  /* seconds,  4.12 unsigned */
+};
+
+struct tas_drce_ctrl_t {
+        uint flags;
+
+        struct tas_drce_t data;
+};
+
+struct tas_gain_t
+{
+  unsigned int *master;
+  unsigned int *treble;
+  unsigned int *bass;
+  unsigned int *mixer;
+};
+
+typedef char tas_shadow_t[0x45];
+
+struct tas_data_t
+{
+        struct i2c_client *client;
+        tas_shadow_t *shadow;
+        uint mixer[SOUND_MIXER_NRDEVICES];
+};
+
+typedef int (*tas_hook_init_t)(struct i2c_client *);
+typedef int (*tas_hook_post_init_t)(struct tas_data_t *);
+typedef void (*tas_hook_uninit_t)(struct tas_data_t *);
+
+typedef int (*tas_hook_get_mixer_level_t)(struct tas_data_t *,int,uint *);
+typedef int (*tas_hook_set_mixer_level_t)(struct tas_data_t *,int,uint);
+
+typedef int (*tas_hook_enter_sleep_t)(struct tas_data_t *);
+typedef int (*tas_hook_leave_sleep_t)(struct tas_data_t *);
+
+typedef int (*tas_hook_supported_mixers_t)(struct tas_data_t *);
+typedef int (*tas_hook_mixer_is_stereo_t)(struct tas_data_t *,int);
+typedef int (*tas_hook_stereo_mixers_t)(struct tas_data_t *);
+
+typedef int (*tas_hook_output_device_change_t)(struct tas_data_t *,int,int,int);
+typedef int (*tas_hook_device_ioctl_t)(struct tas_data_t *,u_int,u_long);
+
+struct tas_driver_hooks_t {
+        /*
+         * All hardware initialisation must be performed in
+         * post_init(), as tas_dmasound_init() does a hardware reset.
+         *
+         * init() is called before tas_dmasound_init() so that
+         * ouput_device_change() is always called after i2c driver
+         * initialisation. The implication is that
+         * output_device_change() must cope with the fact that it
+         * may be called before post_init().
+         */
+
+        tas_hook_init_t                   init;
+        tas_hook_post_init_t              post_init;
+        tas_hook_uninit_t                 uninit;
+
+        tas_hook_get_mixer_level_t        get_mixer_level;
+        tas_hook_set_mixer_level_t        set_mixer_level;
+
+        tas_hook_enter_sleep_t            enter_sleep;
+        tas_hook_leave_sleep_t            leave_sleep;
+
+        tas_hook_supported_mixers_t       supported_mixers;
+        tas_hook_mixer_is_stereo_t        mixer_is_stereo;
+        tas_hook_stereo_mixers_t          stereo_mixers;
+
+        tas_hook_output_device_change_t   output_device_change;
+        tas_hook_device_ioctl_t           device_ioctl;
+};
+
+enum tas_write_mode_t {
+        WRITE_HW     = 0x01,
+        WRITE_SHADOW = 0x02,
+        WRITE_NORMAL = 0x03,
+        FORCE_WRITE  = 0x04
+};
+
+static inline uint
+tas_mono_to_stereo(uint mono)
+{
+        mono &=0xff;
+        return mono | (mono<<8);
+}
+
+/*
+ * Todo: make these functions a bit more efficient !
+ */
+static inline int
+tas_write_register(     struct tas_data_t *self,
+                        uint reg_num,
+                        uint reg_width,
+                        char *data,
+                        uint write_mode)
+{
+        int rc;
+
+        if (reg_width==0 || data==NULL || self==NULL)
+                return -EINVAL;
+        if (!(write_mode & FORCE_WRITE) &&
+            !memcmp(data,self->shadow[reg_num],reg_width))
+                return 0;
+
+        if (write_mode & WRITE_SHADOW)
+                memcpy(self->shadow[reg_num],data,reg_width);
+        if (write_mode & WRITE_HW) {
+                rc=i2c_smbus_write_block_data(self->client,
+                                              reg_num,
+                                              reg_width,
+                                              data);
+                if (rc < 0) {
+                        printk("tas: I2C block write failed \n");  
+                        return rc; 
+                }
+        }
+        return 0;
+}
+
+static inline int
+tas_sync_register(      struct tas_data_t *self,
+                        uint reg_num,
+                        uint reg_width)
+{
+        int rc;
+
+        if (reg_width==0 || self==NULL)
+                return -EINVAL;
+        rc=i2c_smbus_write_block_data(self->client,
+                                      reg_num,
+                                      reg_width,
+                                      self->shadow[reg_num]);
+        if (rc < 0) {
+                printk("tas: I2C block write failed \n");
+                return rc;
+        }
+        return 0;
+}
+
+static inline int
+tas_write_byte_register(        struct tas_data_t *self,
+                                uint reg_num,
+                                char data,
+                                uint write_mode)
+{
+        if (self==NULL)
+                return -1;
+        if (!(write_mode & FORCE_WRITE) && data != self->shadow[reg_num][0])
+                return 0;
+        if (write_mode & WRITE_SHADOW)
+                self->shadow[reg_num][0]=data;
+        if (write_mode & WRITE_HW) {
+                if (i2c_smbus_write_byte_data(self->client, reg_num, data) < 0) {
+                        printk("tas: I2C byte write failed \n");  
+                        return -1; 
+                }
+        }
+        return 0;
+}
+
+static inline int
+tas_sync_byte_register( struct tas_data_t *self,
+                        uint reg_num,
+                        uint reg_width)
+{
+        if (reg_width==0 || self==NULL)
+                return -1;
+        if (i2c_smbus_write_byte_data(
+            self->client, reg_num, self->shadow[reg_num][0]) < 0) {
+                printk("tas: I2C byte write failed \n");
+                return -1;
+        }
+        return 0;
+}
+
+static inline int
+tas_read_register(      struct tas_data_t *self,
+                        uint reg_num,
+                        uint reg_width,
+                        char *data)
+{
+        if (reg_width==0 || data==NULL || self==NULL)
+                return -1;
+        memcpy(data,self->shadow[reg_num],reg_width);
+        return 0;
+}
+
+extern int tas_register_driver(struct tas_driver_hooks_t *hooks);
+
+extern int tas_get_mixer_level(int mixer,uint *level);
+extern int tas_set_mixer_level(int mixer,uint level);
+extern int tas_enter_sleep(void);
+extern int tas_leave_sleep(void);
+extern int tas_supported_mixers(void);
+extern int tas_mixer_is_stereo(int mixer);
+extern int tas_stereo_mixers(void);
+extern int tas_output_device_change(int,int,int);
+extern int tas_device_ioctl(u_int, u_long);
+
+extern void tas_cleanup(void);
+extern int tas_init(int driver_id,const char *driver_name);
+extern int tas_post_init(void);
+
+#endif /* _TAS_COMMON_H_ */
+/*
+ * Local Variables:
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * c-basic-offset: 8
+ * End:
+ */