174 lines
4.9 KiB
C
174 lines
4.9 KiB
C
/*
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* ImgTec IR Decoder found in PowerDown Controller.
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*
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* Copyright 2010-2014 Imagination Technologies Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef _IMG_IR_H_
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#define _IMG_IR_H_
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#include <linux/io.h>
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#include <linux/spinlock.h>
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#include "img-ir-raw.h"
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#include "img-ir-hw.h"
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/* registers */
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/* relative to the start of the IR block of registers */
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#define IMG_IR_CONTROL 0x00
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#define IMG_IR_STATUS 0x04
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#define IMG_IR_DATA_LW 0x08
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#define IMG_IR_DATA_UP 0x0c
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#define IMG_IR_LEAD_SYMB_TIMING 0x10
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#define IMG_IR_S00_SYMB_TIMING 0x14
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#define IMG_IR_S01_SYMB_TIMING 0x18
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#define IMG_IR_S10_SYMB_TIMING 0x1c
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#define IMG_IR_S11_SYMB_TIMING 0x20
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#define IMG_IR_FREE_SYMB_TIMING 0x24
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#define IMG_IR_POW_MOD_PARAMS 0x28
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#define IMG_IR_POW_MOD_ENABLE 0x2c
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#define IMG_IR_IRQ_MSG_DATA_LW 0x30
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#define IMG_IR_IRQ_MSG_DATA_UP 0x34
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#define IMG_IR_IRQ_MSG_MASK_LW 0x38
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#define IMG_IR_IRQ_MSG_MASK_UP 0x3c
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#define IMG_IR_IRQ_ENABLE 0x40
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#define IMG_IR_IRQ_STATUS 0x44
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#define IMG_IR_IRQ_CLEAR 0x48
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#define IMG_IR_IRCORE_ID 0xf0
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#define IMG_IR_CORE_REV 0xf4
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#define IMG_IR_CORE_DES1 0xf8
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#define IMG_IR_CORE_DES2 0xfc
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/* field masks */
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/* IMG_IR_CONTROL */
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#define IMG_IR_DECODEN 0x40000000
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#define IMG_IR_CODETYPE 0x30000000
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#define IMG_IR_CODETYPE_SHIFT 28
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#define IMG_IR_HDRTOG 0x08000000
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#define IMG_IR_LDRDEC 0x04000000
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#define IMG_IR_DECODINPOL 0x02000000 /* active high */
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#define IMG_IR_BITORIEN 0x01000000 /* MSB first */
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#define IMG_IR_D1VALIDSEL 0x00008000
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#define IMG_IR_BITINV 0x00000040 /* don't invert */
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#define IMG_IR_DECODEND2 0x00000010
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#define IMG_IR_BITORIEND2 0x00000002 /* MSB first */
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#define IMG_IR_BITINVD2 0x00000001 /* don't invert */
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/* IMG_IR_STATUS */
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#define IMG_IR_RXDVALD2 0x00001000
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#define IMG_IR_IRRXD 0x00000400
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#define IMG_IR_TOGSTATE 0x00000200
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#define IMG_IR_RXDVAL 0x00000040
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#define IMG_IR_RXDLEN 0x0000003f
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#define IMG_IR_RXDLEN_SHIFT 0
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/* IMG_IR_LEAD_SYMB_TIMING, IMG_IR_Sxx_SYMB_TIMING */
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#define IMG_IR_PD_MAX 0xff000000
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#define IMG_IR_PD_MAX_SHIFT 24
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#define IMG_IR_PD_MIN 0x00ff0000
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#define IMG_IR_PD_MIN_SHIFT 16
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#define IMG_IR_W_MAX 0x0000ff00
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#define IMG_IR_W_MAX_SHIFT 8
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#define IMG_IR_W_MIN 0x000000ff
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#define IMG_IR_W_MIN_SHIFT 0
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/* IMG_IR_FREE_SYMB_TIMING */
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#define IMG_IR_MAXLEN 0x0007e000
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#define IMG_IR_MAXLEN_SHIFT 13
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#define IMG_IR_MINLEN 0x00001f00
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#define IMG_IR_MINLEN_SHIFT 8
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#define IMG_IR_FT_MIN 0x000000ff
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#define IMG_IR_FT_MIN_SHIFT 0
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/* IMG_IR_POW_MOD_PARAMS */
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#define IMG_IR_PERIOD_LEN 0x3f000000
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#define IMG_IR_PERIOD_LEN_SHIFT 24
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#define IMG_IR_PERIOD_DUTY 0x003f0000
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#define IMG_IR_PERIOD_DUTY_SHIFT 16
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#define IMG_IR_STABLE_STOP 0x00003f00
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#define IMG_IR_STABLE_STOP_SHIFT 8
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#define IMG_IR_STABLE_START 0x0000003f
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#define IMG_IR_STABLE_START_SHIFT 0
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/* IMG_IR_POW_MOD_ENABLE */
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#define IMG_IR_POWER_OUT_EN 0x00000002
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#define IMG_IR_POWER_MOD_EN 0x00000001
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/* IMG_IR_IRQ_ENABLE, IMG_IR_IRQ_STATUS, IMG_IR_IRQ_CLEAR */
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#define IMG_IR_IRQ_DEC2_ERR 0x00000080
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#define IMG_IR_IRQ_DEC_ERR 0x00000040
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#define IMG_IR_IRQ_ACT_LEVEL 0x00000020
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#define IMG_IR_IRQ_FALL_EDGE 0x00000010
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#define IMG_IR_IRQ_RISE_EDGE 0x00000008
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#define IMG_IR_IRQ_DATA_MATCH 0x00000004
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#define IMG_IR_IRQ_DATA2_VALID 0x00000002
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#define IMG_IR_IRQ_DATA_VALID 0x00000001
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#define IMG_IR_IRQ_ALL 0x000000ff
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#define IMG_IR_IRQ_EDGE (IMG_IR_IRQ_FALL_EDGE | IMG_IR_IRQ_RISE_EDGE)
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/* IMG_IR_CORE_ID */
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#define IMG_IR_CORE_ID 0x00ff0000
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#define IMG_IR_CORE_ID_SHIFT 16
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#define IMG_IR_CORE_CONFIG 0x0000ffff
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#define IMG_IR_CORE_CONFIG_SHIFT 0
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/* IMG_IR_CORE_REV */
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#define IMG_IR_DESIGNER 0xff000000
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#define IMG_IR_DESIGNER_SHIFT 24
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#define IMG_IR_MAJOR_REV 0x00ff0000
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#define IMG_IR_MAJOR_REV_SHIFT 16
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#define IMG_IR_MINOR_REV 0x0000ff00
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#define IMG_IR_MINOR_REV_SHIFT 8
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#define IMG_IR_MAINT_REV 0x000000ff
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#define IMG_IR_MAINT_REV_SHIFT 0
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struct device;
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struct clk;
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/**
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* struct img_ir_priv - Private driver data.
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* @dev: Platform device.
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* @irq: IRQ number.
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* @clk: Input clock.
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* @sys_clk: System clock.
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* @reg_base: Iomem base address of IR register block.
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* @lock: Protects IR registers and variables in this struct.
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* @raw: Driver data for raw decoder.
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* @hw: Driver data for hardware decoder.
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*/
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struct img_ir_priv {
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struct device *dev;
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int irq;
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struct clk *clk;
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struct clk *sys_clk;
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void __iomem *reg_base;
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spinlock_t lock;
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struct img_ir_priv_raw raw;
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struct img_ir_priv_hw hw;
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};
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/* Hardware access */
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static inline void img_ir_write(struct img_ir_priv *priv,
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unsigned int reg_offs, unsigned int data)
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{
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iowrite32(data, priv->reg_base + reg_offs);
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}
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static inline unsigned int img_ir_read(struct img_ir_priv *priv,
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unsigned int reg_offs)
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{
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return ioread32(priv->reg_base + reg_offs);
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}
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#endif /* _IMG_IR_H_ */
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