diff options
Diffstat (limited to 'kernel/sound/aoa/soundbus/i2sbus/i2sbus.h')
| -rw-r--r-- | kernel/sound/aoa/soundbus/i2sbus/i2sbus.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/kernel/sound/aoa/soundbus/i2sbus/i2sbus.h b/kernel/sound/aoa/soundbus/i2sbus/i2sbus.h new file mode 100644 index 000000000..befefd99e --- /dev/null +++ b/kernel/sound/aoa/soundbus/i2sbus/i2sbus.h @@ -0,0 +1,126 @@ +/* + * i2sbus driver -- private definitions + * + * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> + * + * GPL v2, can be found in COPYING. + */ +#ifndef __I2SBUS_H +#define __I2SBUS_H +#include <linux/interrupt.h> +#include <linux/spinlock.h> +#include <linux/mutex.h> +#include <linux/completion.h> + +#include <sound/pcm.h> + +#include <asm/prom.h> +#include <asm/pmac_feature.h> +#include <asm/dbdma.h> + +#include "interface.h" +#include "../soundbus.h" + +struct i2sbus_control { + struct list_head list; + struct macio_chip *macio; +}; + +#define MAX_DBDMA_COMMANDS 32 + +struct dbdma_command_mem { + dma_addr_t bus_addr; + dma_addr_t bus_cmd_start; + struct dbdma_cmd *cmds; + void *space; + int size; + u32 running:1; + u32 stopping:1; +}; + +struct pcm_info { + u32 created:1, /* has this direction been created with alsa? */ + active:1; /* is this stream active? */ + /* runtime information */ + struct snd_pcm_substream *substream; + int current_period; + u32 frame_count; + struct dbdma_command_mem dbdma_ring; + volatile struct dbdma_regs __iomem *dbdma; + struct completion *stop_completion; +}; + +enum { + aoa_resource_i2smmio = 0, + aoa_resource_txdbdma, + aoa_resource_rxdbdma, +}; + +struct i2sbus_dev { + struct soundbus_dev sound; + struct macio_dev *macio; + struct i2sbus_control *control; + volatile struct i2s_interface_regs __iomem *intfregs; + + struct resource resources[3]; + struct resource *allocated_resource[3]; + int interrupts[3]; + char rnames[3][32]; + + /* info about currently active substreams */ + struct pcm_info out, in; + snd_pcm_format_t format; + unsigned int rate; + + /* list for a single controller */ + struct list_head item; + /* number of bus on controller */ + int bus_number; + /* for use by control layer */ + struct pmf_function *enable, + *cell_enable, + *cell_disable, + *clock_enable, + *clock_disable; + + /* locks */ + /* spinlock for low-level interrupt locking */ + spinlock_t low_lock; + /* mutex for high-level consistency */ + struct mutex lock; +}; + +#define soundbus_dev_to_i2sbus_dev(sdev) \ + container_of(sdev, struct i2sbus_dev, sound) + +/* pcm specific functions */ +extern int +i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card, + struct codec_info *ci, void *data); +extern void +i2sbus_detach_codec(struct soundbus_dev *dev, void *data); +extern irqreturn_t +i2sbus_tx_intr(int irq, void *devid); +extern irqreturn_t +i2sbus_rx_intr(int irq, void *devid); + +extern void i2sbus_wait_for_stop_both(struct i2sbus_dev *i2sdev); +extern void i2sbus_pcm_prepare_both(struct i2sbus_dev *i2sdev); + +/* control specific functions */ +extern int i2sbus_control_init(struct macio_dev* dev, + struct i2sbus_control **c); +extern void i2sbus_control_destroy(struct i2sbus_control *c); +extern int i2sbus_control_add_dev(struct i2sbus_control *c, + struct i2sbus_dev *i2sdev); +extern void i2sbus_control_remove_dev(struct i2sbus_control *c, + struct i2sbus_dev *i2sdev); +extern int i2sbus_control_enable(struct i2sbus_control *c, + struct i2sbus_dev *i2sdev); +extern int i2sbus_control_cell(struct i2sbus_control *c, + struct i2sbus_dev *i2sdev, + int enable); +extern int i2sbus_control_clock(struct i2sbus_control *c, + struct i2sbus_dev *i2sdev, + int enable); +#endif /* __I2SBUS_H */ |