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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | /* SPDX-License-Identifier: GPL-2.0-only */ /* * i2sbus driver -- private definitions * * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> */ #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 */ |