projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d6869352 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| f3d9478b JB |
2 | /* |
| 3 | * i2sbus driver -- private definitions | |
| 4 | * | |
| 5 | * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> | |
| f3d9478b JB |
6 | */ |
| 7 | #ifndef __I2SBUS_H | |
| 8 | #define __I2SBUS_H | |
| f3d9478b | 9 | #include <linux/interrupt.h> |
| f3d9478b JB |
10 | #include <linux/spinlock.h> |
| 11 | #include <linux/mutex.h> | |
| 547ac2ae | 12 | #include <linux/completion.h> |
| 977c6023 BH |
13 | |
| 14 | #include <sound/pcm.h> | |
| 15 | ||
| 977c6023 BH |
16 | #include <asm/pmac_feature.h> |
| 17 | #include <asm/dbdma.h> | |
| 18 | ||
| 888dcb7c | 19 | #include "interface.h" |
| f3d9478b JB |
20 | #include "../soundbus.h" |
| 21 | ||
| 22 | struct i2sbus_control { | |
| f3d9478b | 23 | struct list_head list; |
| 977c6023 | 24 | struct macio_chip *macio; |
| f3d9478b JB |
25 | }; |
| 26 | ||
| 27 | #define MAX_DBDMA_COMMANDS 32 | |
| 28 | ||
| 29 | struct dbdma_command_mem { | |
| 30 | dma_addr_t bus_addr; | |
| 31 | dma_addr_t bus_cmd_start; | |
| 32 | struct dbdma_cmd *cmds; | |
| 33 | void *space; | |
| 34 | int size; | |
| 35 | u32 running:1; | |
| 547ac2ae | 36 | u32 stopping:1; |
| f3d9478b JB |
37 | }; |
| 38 | ||
| 39 | struct pcm_info { | |
| 40 | u32 created:1, /* has this direction been created with alsa? */ | |
| 41 | active:1; /* is this stream active? */ | |
| 42 | /* runtime information */ | |
| 43 | struct snd_pcm_substream *substream; | |
| 44 | int current_period; | |
| 45 | u32 frame_count; | |
| 46 | struct dbdma_command_mem dbdma_ring; | |
| 47 | volatile struct dbdma_regs __iomem *dbdma; | |
| 547ac2ae | 48 | struct completion *stop_completion; |
| f3d9478b JB |
49 | }; |
| 50 | ||
| 389ba795 BH |
51 | enum { |
| 52 | aoa_resource_i2smmio = 0, | |
| 53 | aoa_resource_txdbdma, | |
| 54 | aoa_resource_rxdbdma, | |
| 55 | }; | |
| 56 | ||
| f3d9478b JB |
57 | struct i2sbus_dev { |
| 58 | struct soundbus_dev sound; | |
| 59 | struct macio_dev *macio; | |
| 60 | struct i2sbus_control *control; | |
| 61 | volatile struct i2s_interface_regs __iomem *intfregs; | |
| 62 | ||
| 63 | struct resource resources[3]; | |
| 64 | struct resource *allocated_resource[3]; | |
| 65 | int interrupts[3]; | |
| 66 | char rnames[3][32]; | |
| 67 | ||
| 68 | /* info about currently active substreams */ | |
| 69 | struct pcm_info out, in; | |
| 70 | snd_pcm_format_t format; | |
| 71 | unsigned int rate; | |
| 72 | ||
| 73 | /* list for a single controller */ | |
| 74 | struct list_head item; | |
| 75 | /* number of bus on controller */ | |
| 76 | int bus_number; | |
| 77 | /* for use by control layer */ | |
| 78 | struct pmf_function *enable, | |
| 79 | *cell_enable, | |
| 80 | *cell_disable, | |
| 81 | *clock_enable, | |
| 82 | *clock_disable; | |
| 83 | ||
| 84 | /* locks */ | |
| 85 | /* spinlock for low-level interrupt locking */ | |
| 86 | spinlock_t low_lock; | |
| 87 | /* mutex for high-level consistency */ | |
| 88 | struct mutex lock; | |
| 89 | }; | |
| 90 | ||
| 91 | #define soundbus_dev_to_i2sbus_dev(sdev) \ | |
| 92 | container_of(sdev, struct i2sbus_dev, sound) | |
| 93 | ||
| 94 | /* pcm specific functions */ | |
| 95 | extern int | |
| 96 | i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card, | |
| 97 | struct codec_info *ci, void *data); | |
| 98 | extern void | |
| 99 | i2sbus_detach_codec(struct soundbus_dev *dev, void *data); | |
| 100 | extern irqreturn_t | |
| 7d12e780 | 101 | i2sbus_tx_intr(int irq, void *devid); |
| f3d9478b | 102 | extern irqreturn_t |
| 7d12e780 | 103 | i2sbus_rx_intr(int irq, void *devid); |
| f3d9478b | 104 | |
| 547ac2ae PM |
105 | extern void i2sbus_wait_for_stop_both(struct i2sbus_dev *i2sdev); |
| 106 | extern void i2sbus_pcm_prepare_both(struct i2sbus_dev *i2sdev); | |
| 107 | ||
| f3d9478b JB |
108 | /* control specific functions */ |
| 109 | extern int i2sbus_control_init(struct macio_dev* dev, | |
| 110 | struct i2sbus_control **c); | |
| 111 | extern void i2sbus_control_destroy(struct i2sbus_control *c); | |
| 112 | extern int i2sbus_control_add_dev(struct i2sbus_control *c, | |
| 113 | struct i2sbus_dev *i2sdev); | |
| 114 | extern void i2sbus_control_remove_dev(struct i2sbus_control *c, | |
| 115 | struct i2sbus_dev *i2sdev); | |
| 116 | extern int i2sbus_control_enable(struct i2sbus_control *c, | |
| 117 | struct i2sbus_dev *i2sdev); | |
| 118 | extern int i2sbus_control_cell(struct i2sbus_control *c, | |
| 119 | struct i2sbus_dev *i2sdev, | |
| 120 | int enable); | |
| 121 | extern int i2sbus_control_clock(struct i2sbus_control *c, | |
| 122 | struct i2sbus_dev *i2sdev, | |
| 123 | int enable); | |
| 124 | #endif /* __I2SBUS_H */ |