/*
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* sound\soc\sunxi\sunxi_rw_func.c
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* (C) Copyright 2010-2017
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* Reuuimlla Technology Co., Ltd. <www.reuuimllatech.com>
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* huangxin <huangxin@Reuuimllatech.com>
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*
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* some simple description for this code
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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*/
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#include "sunxi_rw_func.h"
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/*analog register*/
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u32 read_prcm_wvalue(u32 addr, void __iomem *ADDA_PR_CFG_REG)
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{
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u32 reg;
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reg = readl(ADDA_PR_CFG_REG);
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reg |= (0x1 << 28);
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writel(reg, ADDA_PR_CFG_REG);
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reg = readl(ADDA_PR_CFG_REG);
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reg &= ~(0x1 << 24);
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writel(reg, ADDA_PR_CFG_REG);
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reg = readl(ADDA_PR_CFG_REG);
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reg &= ~(ADDR_WIDTH << 16);
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reg |= (addr << 16);
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writel(reg, ADDA_PR_CFG_REG);
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reg = readl(ADDA_PR_CFG_REG);
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reg &= (0xff << 0);
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return reg;
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}
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EXPORT_SYMBOL_GPL(read_prcm_wvalue);
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void write_prcm_wvalue(u32 addr, u32 val, void __iomem *ADDA_PR_CFG_REG)
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{
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u32 reg;
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reg = readl(ADDA_PR_CFG_REG);
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reg |= (0x1 << 28);
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writel(reg, ADDA_PR_CFG_REG);
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reg = readl(ADDA_PR_CFG_REG);
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reg &= ~(ADDR_WIDTH << 16);
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reg |= (addr << 16);
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writel(reg, ADDA_PR_CFG_REG);
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reg = readl(ADDA_PR_CFG_REG);
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reg &= ~(0xff << 8);
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reg |= (val << 8);
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writel(reg, ADDA_PR_CFG_REG);
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reg = readl(ADDA_PR_CFG_REG);
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reg |= (0x1 << 24);
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writel(reg, ADDA_PR_CFG_REG);
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reg = readl(ADDA_PR_CFG_REG);
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reg &= ~(0x1 << 24);
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writel(reg, ADDA_PR_CFG_REG);
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}
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EXPORT_SYMBOL_GPL(write_prcm_wvalue);
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/*digital*/
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u32 codec_rdreg(void __iomem *address)
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{
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return readl(address);
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}
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EXPORT_SYMBOL_GPL(codec_rdreg);
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void codec_wrreg(void __iomem *address, u32 val)
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{
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writel(val, address);
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}
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EXPORT_SYMBOL_GPL(codec_wrreg);
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/**
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* codec_wrreg_bits - update codec register bits
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* @reg: codec register
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* @mask: register mask
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* @value: new value
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*
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* Writes new register value.
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* Return 1 for change else 0.
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*/
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u32 codec_wrreg_prcm_bits(void __iomem *ADDA_PR_CFG_REG, u32 reg,
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u32 mask, u32 value)
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{
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u32 old, new;
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old = read_prcm_wvalue(reg, ADDA_PR_CFG_REG);
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new = (old & ~mask) | value;
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write_prcm_wvalue(reg, new, ADDA_PR_CFG_REG);
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return 0;
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}
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EXPORT_SYMBOL_GPL(codec_wrreg_prcm_bits);
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/**
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* codec_wrreg_bits - update codec register bits
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* @reg: codec register
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* @mask: register mask
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* @value: new value
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*
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* Writes new register value.
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* Return 1 for change else 0.
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*/
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u32 codec_wrreg_bits(void __iomem *address, u32 mask, u32 value)
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{
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u32 old, new;
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old = codec_rdreg(address);
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new = (old & ~mask) | value;
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codec_wrreg(address, new);
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return 0;
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}
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EXPORT_SYMBOL_GPL(codec_wrreg_bits);
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u32 codec_wr_control(void __iomem *reg, u32 mask, u32 shift, u32 val)
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{
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u32 reg_val;
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reg_val = val << shift;
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mask = mask << shift;
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codec_wrreg_bits(reg, mask, reg_val);
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return 0;
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}
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EXPORT_SYMBOL_GPL(codec_wr_control);
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u32 audiodebug_reg_read(u32 reg)
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{
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u32 reg_val = -1;
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void __iomem *temp_address = ioremap(reg, 5);
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if (temp_address == NULL) {
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pr_err("could not remap register memory\n");
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return -ENOMEM;
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} else
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reg_val = readl(temp_address);
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iounmap(temp_address);
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return reg_val;
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}
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EXPORT_SYMBOL_GPL(audiodebug_reg_read);
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MODULE_AUTHOR("huangxin, liushaohua");
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MODULE_DESCRIPTION("sunxi ASoC DMA Driver");
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MODULE_LICENSE("GPL");
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