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// SPDX-License-Identifier: GPL-2.0-only
/* linux/drivers/media/platform/samsung/s5p-jpeg/jpeg-hw.h
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
*/
#include <linux/io.h>
#include <linux/videodev2.h>
#include "jpeg-core.h"
#include "jpeg-regs.h"
#include "jpeg-hw-s5p.h"
void s5p_jpeg_reset(void __iomem *regs)
{
unsigned long reg;
writel(1, regs + S5P_JPG_SW_RESET);
reg = readl(regs + S5P_JPG_SW_RESET);
/* no other way but polling for when JPEG IP becomes operational */
while (reg != 0) {
cpu_relax();
reg = readl(regs + S5P_JPG_SW_RESET);
}
}
void s5p_jpeg_poweron(void __iomem *regs)
{
writel(S5P_POWER_ON, regs + S5P_JPGCLKCON);
}
void s5p_jpeg_input_raw_mode(void __iomem *regs, unsigned long mode)
{
unsigned long reg, m;
m = S5P_MOD_SEL_565;
if (mode == S5P_JPEG_RAW_IN_565)
m = S5P_MOD_SEL_565;
else if (mode == S5P_JPEG_RAW_IN_422)
m = S5P_MOD_SEL_422;
reg = readl(regs + S5P_JPGCMOD);
reg &= ~S5P_MOD_SEL_MASK;
reg |= m;
writel(reg, regs + S5P_JPGCMOD);
}
void s5p_jpeg_proc_mode(void __iomem *regs, unsigned long mode)
{
unsigned long reg, m;
if (mode == S5P_JPEG_ENCODE)
m = S5P_PROC_MODE_COMPR;
else
m = S5P_PROC_MODE_DECOMPR;
reg = readl(regs + S5P_JPGMOD);
reg &= ~S5P_PROC_MODE_MASK;
reg |= m;
writel(reg, regs + S5P_JPGMOD);
}
void s5p_jpeg_subsampling_mode(void __iomem *regs, unsigned int mode)
{
unsigned long reg, m;
if (mode == V4L2_JPEG_CHROMA_SUBSAMPLING_420)
m = S5P_SUBSAMPLING_MODE_420;
else
m = S5P_SUBSAMPLING_MODE_422;
reg = readl(regs + S5P_JPGMOD);
reg &= ~S5P_SUBSAMPLING_MODE_MASK;
reg |= m;
writel(reg, regs + S5P_JPGMOD);
}
unsigned int s5p_jpeg_get_subsampling_mode(void __iomem *regs)
{
return readl(regs + S5P_JPGMOD) & S5P_SUBSAMPLING_MODE_MASK;
}
void s5p_jpeg_dri(void __iomem *regs, unsigned int dri)
{
unsigned long reg;
reg = readl(regs + S5P_JPGDRI_U);
reg &= ~0xff;
reg |= (dri >> 8) & 0xff;
writel(reg, regs + S5P_JPGDRI_U);
reg = readl(regs + S5P_JPGDRI_L);
reg &= ~0xff;
reg |= dri & 0xff;
writel(reg, regs + S5P_JPGDRI_L);
}
void s5p_jpeg_qtbl(void __iomem *regs, unsigned int t, unsigned int n)
{
unsigned long reg;
reg = readl(regs + S5P_JPG_QTBL);
reg &= ~S5P_QT_NUMt_MASK(t);
reg |= (n << S5P_QT_NUMt_SHIFT(t)) & S5P_QT_NUMt_MASK(t);
writel(reg, regs + S5P_JPG_QTBL);
}
void s5p_jpeg_htbl_ac(void __iomem *regs, unsigned int t)
{
unsigned long reg;
reg = readl(regs + S5P_JPG_HTBL);
reg &= ~S5P_HT_NUMt_AC_MASK(t);
/* this driver uses table 0 for all color components */
reg |= (0 << S5P_HT_NUMt_AC_SHIFT(t)) & S5P_HT_NUMt_AC_MASK(t);
writel(reg, regs + S5P_JPG_HTBL);
}
void s5p_jpeg_htbl_dc(void __iomem *regs, unsigned int t)
{
unsigned long reg;
reg = readl(regs + S5P_JPG_HTBL);
reg &= ~S5P_HT_NUMt_DC_MASK(t);
/* this driver uses table 0 for all color components */
reg |= (0 << S5P_HT_NUMt_DC_SHIFT(t)) & S5P_HT_NUMt_DC_MASK(t);
writel(reg, regs + S5P_JPG_HTBL);
}
void s5p_jpeg_y(void __iomem *regs, unsigned int y)
{
unsigned long reg;
reg = readl(regs + S5P_JPGY_U);
reg &= ~0xff;
reg |= (y >> 8) & 0xff;
writel(reg, regs + S5P_JPGY_U);
reg = readl(regs + S5P_JPGY_L);
reg &= ~0xff;
reg |= y & 0xff;
writel(reg, regs + S5P_JPGY_L);
}
void s5p_jpeg_x(void __iomem *regs, unsigned int x)
{
unsigned long reg;
reg = readl(regs + S5P_JPGX_U);
reg &= ~0xff;
reg |= (x >> 8) & 0xff;
writel(reg, regs + S5P_JPGX_U);
reg = readl(regs + S5P_JPGX_L);
reg &= ~0xff;
reg |= x & 0xff;
writel(reg, regs + S5P_JPGX_L);
}
void s5p_jpeg_rst_int_enable(void __iomem *regs, bool enable)
{
unsigned long reg;
reg = readl(regs + S5P_JPGINTSE);
reg &= ~S5P_RSTm_INT_EN_MASK;
if (enable)
reg |= S5P_RSTm_INT_EN;
writel(reg, regs + S5P_JPGINTSE);
}
void s5p_jpeg_data_num_int_enable(void __iomem *regs, bool enable)
{
unsigned long reg;
reg = readl(regs + S5P_JPGINTSE);
reg &= ~S5P_DATA_NUM_INT_EN_MASK;
if (enable)
reg |= S5P_DATA_NUM_INT_EN;
writel(reg, regs + S5P_JPGINTSE);
}
void s5p_jpeg_final_mcu_num_int_enable(void __iomem *regs, bool enbl)
{
unsigned long reg;
reg = readl(regs + S5P_JPGINTSE);
reg &= ~S5P_FINAL_MCU_NUM_INT_EN_MASK;
if (enbl)
reg |= S5P_FINAL_MCU_NUM_INT_EN;
writel(reg, regs + S5P_JPGINTSE);
}
int s5p_jpeg_timer_stat(void __iomem *regs)
{
return (int)((readl(regs + S5P_JPG_TIMER_ST) & S5P_TIMER_INT_STAT_MASK)
>> S5P_TIMER_INT_STAT_SHIFT);
}
void s5p_jpeg_clear_timer_stat(void __iomem *regs)
{
unsigned long reg;
reg = readl(regs + S5P_JPG_TIMER_SE);
reg &= ~S5P_TIMER_INT_STAT_MASK;
writel(reg, regs + S5P_JPG_TIMER_SE);
}
void s5p_jpeg_enc_stream_int(void __iomem *regs, unsigned long size)
{
unsigned long reg;
reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
reg &= ~S5P_ENC_STREAM_BOUND_MASK;
reg |= S5P_ENC_STREAM_INT_EN;
reg |= size & S5P_ENC_STREAM_BOUND_MASK;
writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
}
int s5p_jpeg_enc_stream_stat(void __iomem *regs)
{
return (int)(readl(regs + S5P_JPG_ENC_STREAM_INTST) &
S5P_ENC_STREAM_INT_STAT_MASK);
}
void s5p_jpeg_clear_enc_stream_stat(void __iomem *regs)
{
unsigned long reg;
reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
reg &= ~S5P_ENC_STREAM_INT_MASK;
writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
}
void s5p_jpeg_outform_raw(void __iomem *regs, unsigned long format)
{
unsigned long reg, f;
f = S5P_DEC_OUT_FORMAT_422;
if (format == S5P_JPEG_RAW_OUT_422)
f = S5P_DEC_OUT_FORMAT_422;
else if (format == S5P_JPEG_RAW_OUT_420)
f = S5P_DEC_OUT_FORMAT_420;
reg = readl(regs + S5P_JPG_OUTFORM);
reg &= ~S5P_DEC_OUT_FORMAT_MASK;
reg |= f;
writel(reg, regs + S5P_JPG_OUTFORM);
}
void s5p_jpeg_jpgadr(void __iomem *regs, unsigned long addr)
{
writel(addr, regs + S5P_JPG_JPGADR);
}
void s5p_jpeg_imgadr(void __iomem *regs, unsigned long addr)
{
writel(addr, regs + S5P_JPG_IMGADR);
}
void s5p_jpeg_coef(void __iomem *regs, unsigned int i,
unsigned int j, unsigned int coef)
{
unsigned long reg;
reg = readl(regs + S5P_JPG_COEF(i));
reg &= ~S5P_COEFn_MASK(j);
reg |= (coef << S5P_COEFn_SHIFT(j)) & S5P_COEFn_MASK(j);
writel(reg, regs + S5P_JPG_COEF(i));
}
void s5p_jpeg_start(void __iomem *regs)
{
writel(1, regs + S5P_JSTART);
}
int s5p_jpeg_result_stat_ok(void __iomem *regs)
{
return (int)((readl(regs + S5P_JPGINTST) & S5P_RESULT_STAT_MASK)
>> S5P_RESULT_STAT_SHIFT);
}
int s5p_jpeg_stream_stat_ok(void __iomem *regs)
{
return !(int)((readl(regs + S5P_JPGINTST) & S5P_STREAM_STAT_MASK)
>> S5P_STREAM_STAT_SHIFT);
}
void s5p_jpeg_clear_int(void __iomem *regs)
{
readl(regs + S5P_JPGINTST);
writel(S5P_INT_RELEASE, regs + S5P_JPGCOM);
readl(regs + S5P_JPGOPR);
}
unsigned int s5p_jpeg_compressed_size(void __iomem *regs)
{
unsigned long jpeg_size = 0;
jpeg_size |= (readl(regs + S5P_JPGCNT_U) & 0xff) << 16;
jpeg_size |= (readl(regs + S5P_JPGCNT_M) & 0xff) << 8;
jpeg_size |= (readl(regs + S5P_JPGCNT_L) & 0xff);
return (unsigned int)jpeg_size;
}
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