diff options
Diffstat (limited to 'drivers/media/platform/samsung/s5p-jpeg/jpeg-hw-s5p.c')
| -rw-r--r-- | drivers/media/platform/samsung/s5p-jpeg/jpeg-hw-s5p.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/drivers/media/platform/samsung/s5p-jpeg/jpeg-hw-s5p.c b/drivers/media/platform/samsung/s5p-jpeg/jpeg-hw-s5p.c new file mode 100644 index 000000000..33e6e85df --- /dev/null +++ b/drivers/media/platform/samsung/s5p-jpeg/jpeg-hw-s5p.c @@ -0,0 +1,305 @@ +// 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; +} |