310 lines
7.0 KiB
C
310 lines
7.0 KiB
C
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/* linux/drivers/media/platform/s5p-jpeg/jpeg-hw.h
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/io.h>
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#include <linux/videodev2.h>
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#include "jpeg-core.h"
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#include "jpeg-regs.h"
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#include "jpeg-hw-s5p.h"
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void s5p_jpeg_reset(void __iomem *regs)
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{
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unsigned long reg;
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writel(1, regs + S5P_JPG_SW_RESET);
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reg = readl(regs + S5P_JPG_SW_RESET);
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/* no other way but polling for when JPEG IP becomes operational */
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while (reg != 0) {
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cpu_relax();
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reg = readl(regs + S5P_JPG_SW_RESET);
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}
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}
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void s5p_jpeg_poweron(void __iomem *regs)
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{
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writel(S5P_POWER_ON, regs + S5P_JPGCLKCON);
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}
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void s5p_jpeg_input_raw_mode(void __iomem *regs, unsigned long mode)
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{
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unsigned long reg, m;
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m = S5P_MOD_SEL_565;
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if (mode == S5P_JPEG_RAW_IN_565)
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m = S5P_MOD_SEL_565;
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else if (mode == S5P_JPEG_RAW_IN_422)
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m = S5P_MOD_SEL_422;
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reg = readl(regs + S5P_JPGCMOD);
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reg &= ~S5P_MOD_SEL_MASK;
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reg |= m;
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writel(reg, regs + S5P_JPGCMOD);
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}
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void s5p_jpeg_proc_mode(void __iomem *regs, unsigned long mode)
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{
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unsigned long reg, m;
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m = S5P_PROC_MODE_DECOMPR;
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if (mode == S5P_JPEG_ENCODE)
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m = S5P_PROC_MODE_COMPR;
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else
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m = S5P_PROC_MODE_DECOMPR;
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reg = readl(regs + S5P_JPGMOD);
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reg &= ~S5P_PROC_MODE_MASK;
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reg |= m;
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writel(reg, regs + S5P_JPGMOD);
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}
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void s5p_jpeg_subsampling_mode(void __iomem *regs, unsigned int mode)
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{
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unsigned long reg, m;
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if (mode == V4L2_JPEG_CHROMA_SUBSAMPLING_420)
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m = S5P_SUBSAMPLING_MODE_420;
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else
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m = S5P_SUBSAMPLING_MODE_422;
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reg = readl(regs + S5P_JPGMOD);
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reg &= ~S5P_SUBSAMPLING_MODE_MASK;
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reg |= m;
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writel(reg, regs + S5P_JPGMOD);
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}
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unsigned int s5p_jpeg_get_subsampling_mode(void __iomem *regs)
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{
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return readl(regs + S5P_JPGMOD) & S5P_SUBSAMPLING_MODE_MASK;
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}
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void s5p_jpeg_dri(void __iomem *regs, unsigned int dri)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPGDRI_U);
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reg &= ~0xff;
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reg |= (dri >> 8) & 0xff;
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writel(reg, regs + S5P_JPGDRI_U);
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reg = readl(regs + S5P_JPGDRI_L);
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reg &= ~0xff;
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reg |= dri & 0xff;
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writel(reg, regs + S5P_JPGDRI_L);
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}
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void s5p_jpeg_qtbl(void __iomem *regs, unsigned int t, unsigned int n)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPG_QTBL);
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reg &= ~S5P_QT_NUMt_MASK(t);
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reg |= (n << S5P_QT_NUMt_SHIFT(t)) & S5P_QT_NUMt_MASK(t);
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writel(reg, regs + S5P_JPG_QTBL);
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}
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void s5p_jpeg_htbl_ac(void __iomem *regs, unsigned int t)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPG_HTBL);
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reg &= ~S5P_HT_NUMt_AC_MASK(t);
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/* this driver uses table 0 for all color components */
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reg |= (0 << S5P_HT_NUMt_AC_SHIFT(t)) & S5P_HT_NUMt_AC_MASK(t);
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writel(reg, regs + S5P_JPG_HTBL);
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}
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void s5p_jpeg_htbl_dc(void __iomem *regs, unsigned int t)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPG_HTBL);
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reg &= ~S5P_HT_NUMt_DC_MASK(t);
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/* this driver uses table 0 for all color components */
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reg |= (0 << S5P_HT_NUMt_DC_SHIFT(t)) & S5P_HT_NUMt_DC_MASK(t);
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writel(reg, regs + S5P_JPG_HTBL);
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}
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void s5p_jpeg_y(void __iomem *regs, unsigned int y)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPGY_U);
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reg &= ~0xff;
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reg |= (y >> 8) & 0xff;
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writel(reg, regs + S5P_JPGY_U);
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reg = readl(regs + S5P_JPGY_L);
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reg &= ~0xff;
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reg |= y & 0xff;
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writel(reg, regs + S5P_JPGY_L);
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}
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void s5p_jpeg_x(void __iomem *regs, unsigned int x)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPGX_U);
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reg &= ~0xff;
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reg |= (x >> 8) & 0xff;
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writel(reg, regs + S5P_JPGX_U);
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reg = readl(regs + S5P_JPGX_L);
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reg &= ~0xff;
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reg |= x & 0xff;
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writel(reg, regs + S5P_JPGX_L);
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}
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void s5p_jpeg_rst_int_enable(void __iomem *regs, bool enable)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPGINTSE);
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reg &= ~S5P_RSTm_INT_EN_MASK;
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if (enable)
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reg |= S5P_RSTm_INT_EN;
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writel(reg, regs + S5P_JPGINTSE);
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}
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void s5p_jpeg_data_num_int_enable(void __iomem *regs, bool enable)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPGINTSE);
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reg &= ~S5P_DATA_NUM_INT_EN_MASK;
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if (enable)
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reg |= S5P_DATA_NUM_INT_EN;
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writel(reg, regs + S5P_JPGINTSE);
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}
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void s5p_jpeg_final_mcu_num_int_enable(void __iomem *regs, bool enbl)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPGINTSE);
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reg &= ~S5P_FINAL_MCU_NUM_INT_EN_MASK;
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if (enbl)
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reg |= S5P_FINAL_MCU_NUM_INT_EN;
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writel(reg, regs + S5P_JPGINTSE);
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}
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int s5p_jpeg_timer_stat(void __iomem *regs)
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{
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return (int)((readl(regs + S5P_JPG_TIMER_ST) & S5P_TIMER_INT_STAT_MASK)
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>> S5P_TIMER_INT_STAT_SHIFT);
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}
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void s5p_jpeg_clear_timer_stat(void __iomem *regs)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPG_TIMER_SE);
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reg &= ~S5P_TIMER_INT_STAT_MASK;
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writel(reg, regs + S5P_JPG_TIMER_SE);
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}
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void s5p_jpeg_enc_stream_int(void __iomem *regs, unsigned long size)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
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reg &= ~S5P_ENC_STREAM_BOUND_MASK;
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reg |= S5P_ENC_STREAM_INT_EN;
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reg |= size & S5P_ENC_STREAM_BOUND_MASK;
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writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
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}
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int s5p_jpeg_enc_stream_stat(void __iomem *regs)
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{
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return (int)(readl(regs + S5P_JPG_ENC_STREAM_INTST) &
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S5P_ENC_STREAM_INT_STAT_MASK);
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}
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void s5p_jpeg_clear_enc_stream_stat(void __iomem *regs)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
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reg &= ~S5P_ENC_STREAM_INT_MASK;
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writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
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}
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void s5p_jpeg_outform_raw(void __iomem *regs, unsigned long format)
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{
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unsigned long reg, f;
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f = S5P_DEC_OUT_FORMAT_422;
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if (format == S5P_JPEG_RAW_OUT_422)
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f = S5P_DEC_OUT_FORMAT_422;
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else if (format == S5P_JPEG_RAW_OUT_420)
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f = S5P_DEC_OUT_FORMAT_420;
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reg = readl(regs + S5P_JPG_OUTFORM);
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reg &= ~S5P_DEC_OUT_FORMAT_MASK;
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reg |= f;
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writel(reg, regs + S5P_JPG_OUTFORM);
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}
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void s5p_jpeg_jpgadr(void __iomem *regs, unsigned long addr)
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{
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writel(addr, regs + S5P_JPG_JPGADR);
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}
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void s5p_jpeg_imgadr(void __iomem *regs, unsigned long addr)
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{
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writel(addr, regs + S5P_JPG_IMGADR);
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}
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void s5p_jpeg_coef(void __iomem *regs, unsigned int i,
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unsigned int j, unsigned int coef)
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{
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unsigned long reg;
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reg = readl(regs + S5P_JPG_COEF(i));
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reg &= ~S5P_COEFn_MASK(j);
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reg |= (coef << S5P_COEFn_SHIFT(j)) & S5P_COEFn_MASK(j);
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writel(reg, regs + S5P_JPG_COEF(i));
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}
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void s5p_jpeg_start(void __iomem *regs)
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{
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writel(1, regs + S5P_JSTART);
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}
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int s5p_jpeg_result_stat_ok(void __iomem *regs)
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{
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return (int)((readl(regs + S5P_JPGINTST) & S5P_RESULT_STAT_MASK)
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>> S5P_RESULT_STAT_SHIFT);
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}
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int s5p_jpeg_stream_stat_ok(void __iomem *regs)
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{
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return !(int)((readl(regs + S5P_JPGINTST) & S5P_STREAM_STAT_MASK)
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>> S5P_STREAM_STAT_SHIFT);
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}
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void s5p_jpeg_clear_int(void __iomem *regs)
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{
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readl(regs + S5P_JPGINTST);
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writel(S5P_INT_RELEASE, regs + S5P_JPGCOM);
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readl(regs + S5P_JPGOPR);
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}
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unsigned int s5p_jpeg_compressed_size(void __iomem *regs)
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{
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unsigned long jpeg_size = 0;
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jpeg_size |= (readl(regs + S5P_JPGCNT_U) & 0xff) << 16;
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jpeg_size |= (readl(regs + S5P_JPGCNT_M) & 0xff) << 8;
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jpeg_size |= (readl(regs + S5P_JPGCNT_L) & 0xff);
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return (unsigned int)jpeg_size;
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}
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