1 files changed, 343 insertions, 0 deletions

diff --git a/drivers/media/platform/s5p-jpeg/jpeg-hw-s5p.c b/drivers/media/platform/s5p-jpeg/jpeg-hw-s5p.c
new file mode 100644
index 000000000000..52407d790726
--- /dev/null
+++ b/drivers/media/platform/s5p-jpeg/jpeg-hw-s5p.c
@@ -0,0 +1,343 @@
+/* linux/drivers/media/platform/s5p-jpeg/jpeg-hw.h
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#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_input_raw_y16(void __iomem *regs, bool y16)
+{
+        unsigned long reg;
+
+        reg = readl(regs + S5P_JPGCMOD);
+        if (y16)
+                reg |= S5P_MODE_Y16;
+        else
+                reg &= ~S5P_MODE_Y16_MASK;
+        writel(reg, regs + S5P_JPGCMOD);
+}
+
+void s5p_jpeg_proc_mode(void __iomem *regs, unsigned long mode)
+{
+        unsigned long reg, m;
+
+        m = S5P_PROC_MODE_DECOMPR;
+        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);
+}
+
+void s5p_jpeg_timer_enable(void __iomem *regs, unsigned long val)
+{
+        unsigned long reg;
+
+        reg = readl(regs + S5P_JPG_TIMER_SE);
+        reg |= S5P_TIMER_INT_EN;
+        reg &= ~S5P_TIMER_INIT_MASK;
+        reg |= val & S5P_TIMER_INIT_MASK;
+        writel(reg, regs + S5P_JPG_TIMER_SE);
+}
+
+void s5p_jpeg_timer_disable(void __iomem *regs)
+{
+        unsigned long reg;
+
+        reg = readl(regs + S5P_JPG_TIMER_SE);
+        reg &= ~S5P_TIMER_INT_EN_MASK;
+        writel(reg, regs + S5P_JPG_TIMER_SE);
+}
+
+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)
+{
+        unsigned long reg;
+
+        reg = readl(regs + S5P_JPGINTST);
+        writel(S5P_INT_RELEASE, regs + S5P_JPGCOM);
+        reg = 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;
+}