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linux-sg2042/drivers/media/platform/exynos-gsc/gsc-regs.c

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/*
* Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Samsung EXYNOS5 SoC series G-Scaler driver
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 2 of the License,
* or (at your option) any later version.
*/
#include <linux/io.h>
#include <linux/delay.h>
#include "gsc-core.h"
void gsc_hw_set_sw_reset(struct gsc_dev *dev)
{
writel(GSC_SW_RESET_SRESET, dev->regs + GSC_SW_RESET);
}
int gsc_wait_reset(struct gsc_dev *dev)
{
unsigned long end = jiffies + msecs_to_jiffies(50);
u32 cfg;
while (time_before(jiffies, end)) {
cfg = readl(dev->regs + GSC_SW_RESET);
if (!cfg)
return 0;
usleep_range(10, 20);
}
return -EBUSY;
}
void gsc_hw_set_frm_done_irq_mask(struct gsc_dev *dev, bool mask)
{
u32 cfg;
cfg = readl(dev->regs + GSC_IRQ);
if (mask)
cfg |= GSC_IRQ_FRMDONE_MASK;
else
cfg &= ~GSC_IRQ_FRMDONE_MASK;
writel(cfg, dev->regs + GSC_IRQ);
}
void gsc_hw_set_gsc_irq_enable(struct gsc_dev *dev, bool mask)
{
u32 cfg;
cfg = readl(dev->regs + GSC_IRQ);
if (mask)
cfg |= GSC_IRQ_ENABLE;
else
cfg &= ~GSC_IRQ_ENABLE;
writel(cfg, dev->regs + GSC_IRQ);
}
void gsc_hw_set_input_buf_masking(struct gsc_dev *dev, u32 shift,
bool enable)
{
u32 cfg = readl(dev->regs + GSC_IN_BASE_ADDR_Y_MASK);
u32 mask = 1 << shift;
cfg &= ~mask;
cfg |= enable << shift;
writel(cfg, dev->regs + GSC_IN_BASE_ADDR_Y_MASK);
writel(cfg, dev->regs + GSC_IN_BASE_ADDR_CB_MASK);
writel(cfg, dev->regs + GSC_IN_BASE_ADDR_CR_MASK);
}
void gsc_hw_set_output_buf_masking(struct gsc_dev *dev, u32 shift,
bool enable)
{
u32 cfg = readl(dev->regs + GSC_OUT_BASE_ADDR_Y_MASK);
u32 mask = 1 << shift;
cfg &= ~mask;
cfg |= enable << shift;
writel(cfg, dev->regs + GSC_OUT_BASE_ADDR_Y_MASK);
writel(cfg, dev->regs + GSC_OUT_BASE_ADDR_CB_MASK);
writel(cfg, dev->regs + GSC_OUT_BASE_ADDR_CR_MASK);
}
void gsc_hw_set_input_addr(struct gsc_dev *dev, struct gsc_addr *addr,
int index)
{
pr_debug("src_buf[%d]: %pad, cb: %pad, cr: %pad", index,
&addr->y, &addr->cb, &addr->cr);
writel(addr->y, dev->regs + GSC_IN_BASE_ADDR_Y(index));
writel(addr->cb, dev->regs + GSC_IN_BASE_ADDR_CB(index));
writel(addr->cr, dev->regs + GSC_IN_BASE_ADDR_CR(index));
}
void gsc_hw_set_output_addr(struct gsc_dev *dev,
struct gsc_addr *addr, int index)
{
pr_debug("dst_buf[%d]: %pad, cb: %pad, cr: %pad",
index, &addr->y, &addr->cb, &addr->cr);
writel(addr->y, dev->regs + GSC_OUT_BASE_ADDR_Y(index));
writel(addr->cb, dev->regs + GSC_OUT_BASE_ADDR_CB(index));
writel(addr->cr, dev->regs + GSC_OUT_BASE_ADDR_CR(index));
}
void gsc_hw_set_input_path(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
u32 cfg = readl(dev->regs + GSC_IN_CON);
cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
if (ctx->in_path == GSC_DMA)
cfg |= GSC_IN_PATH_MEMORY;
writel(cfg, dev->regs + GSC_IN_CON);
}
void gsc_hw_set_in_size(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
struct gsc_frame *frame = &ctx->s_frame;
u32 cfg;
/* Set input pixel offset */
cfg = GSC_SRCIMG_OFFSET_X(frame->crop.left);
cfg |= GSC_SRCIMG_OFFSET_Y(frame->crop.top);
writel(cfg, dev->regs + GSC_SRCIMG_OFFSET);
/* Set input original size */
cfg = GSC_SRCIMG_WIDTH(frame->f_width);
cfg |= GSC_SRCIMG_HEIGHT(frame->f_height);
writel(cfg, dev->regs + GSC_SRCIMG_SIZE);
/* Set input cropped size */
cfg = GSC_CROPPED_WIDTH(frame->crop.width);
cfg |= GSC_CROPPED_HEIGHT(frame->crop.height);
writel(cfg, dev->regs + GSC_CROPPED_SIZE);
}
void gsc_hw_set_in_image_rgb(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
struct gsc_frame *frame = &ctx->s_frame;
u32 cfg;
cfg = readl(dev->regs + GSC_IN_CON);
if (frame->colorspace == V4L2_COLORSPACE_REC709)
cfg |= GSC_IN_RGB_HD_WIDE;
else
cfg |= GSC_IN_RGB_SD_WIDE;
if (frame->fmt->pixelformat == V4L2_PIX_FMT_RGB565X)
cfg |= GSC_IN_RGB565;
else if (frame->fmt->pixelformat == V4L2_PIX_FMT_RGB32)
cfg |= GSC_IN_XRGB8888;
writel(cfg, dev->regs + GSC_IN_CON);
}
void gsc_hw_set_in_image_format(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
struct gsc_frame *frame = &ctx->s_frame;
u32 i, depth = 0;
u32 cfg;
cfg = readl(dev->regs + GSC_IN_CON);
cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK |
GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK |
GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE);
writel(cfg, dev->regs + GSC_IN_CON);
if (is_rgb(frame->fmt->color)) {
gsc_hw_set_in_image_rgb(ctx);
return;
}
for (i = 0; i < frame->fmt->num_planes; i++)
depth += frame->fmt->depth[i];
switch (frame->fmt->num_comp) {
case 1:
cfg |= GSC_IN_YUV422_1P;
if (frame->fmt->yorder == GSC_LSB_Y)
cfg |= GSC_IN_YUV422_1P_ORDER_LSB_Y;
else
cfg |= GSC_IN_YUV422_1P_OEDER_LSB_C;
if (frame->fmt->corder == GSC_CBCR)
cfg |= GSC_IN_CHROMA_ORDER_CBCR;
else
cfg |= GSC_IN_CHROMA_ORDER_CRCB;
break;
case 2:
if (depth == 12)
cfg |= GSC_IN_YUV420_2P;
else
cfg |= GSC_IN_YUV422_2P;
if (frame->fmt->corder == GSC_CBCR)
cfg |= GSC_IN_CHROMA_ORDER_CBCR;
else
cfg |= GSC_IN_CHROMA_ORDER_CRCB;
break;
case 3:
if (depth == 12)
cfg |= GSC_IN_YUV420_3P;
else
cfg |= GSC_IN_YUV422_3P;
break;
}
if (is_tiled(frame->fmt))
cfg |= GSC_IN_TILE_C_16x8 | GSC_IN_TILE_MODE;
writel(cfg, dev->regs + GSC_IN_CON);
}
void gsc_hw_set_output_path(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
u32 cfg = readl(dev->regs + GSC_OUT_CON);
cfg &= ~GSC_OUT_PATH_MASK;
if (ctx->out_path == GSC_DMA)
cfg |= GSC_OUT_PATH_MEMORY;
else
cfg |= GSC_OUT_PATH_LOCAL;
writel(cfg, dev->regs + GSC_OUT_CON);
}
void gsc_hw_set_out_size(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
struct gsc_frame *frame = &ctx->d_frame;
u32 cfg;
/* Set output original size */
if (ctx->out_path == GSC_DMA) {
cfg = GSC_DSTIMG_OFFSET_X(frame->crop.left);
cfg |= GSC_DSTIMG_OFFSET_Y(frame->crop.top);
writel(cfg, dev->regs + GSC_DSTIMG_OFFSET);
cfg = GSC_DSTIMG_WIDTH(frame->f_width);
cfg |= GSC_DSTIMG_HEIGHT(frame->f_height);
writel(cfg, dev->regs + GSC_DSTIMG_SIZE);
}
/* Set output scaled size */
if (ctx->gsc_ctrls.rotate->val == 90 ||
ctx->gsc_ctrls.rotate->val == 270) {
cfg = GSC_SCALED_WIDTH(frame->crop.height);
cfg |= GSC_SCALED_HEIGHT(frame->crop.width);
} else {
cfg = GSC_SCALED_WIDTH(frame->crop.width);
cfg |= GSC_SCALED_HEIGHT(frame->crop.height);
}
writel(cfg, dev->regs + GSC_SCALED_SIZE);
}
void gsc_hw_set_out_image_rgb(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
struct gsc_frame *frame = &ctx->d_frame;
u32 cfg;
cfg = readl(dev->regs + GSC_OUT_CON);
if (frame->colorspace == V4L2_COLORSPACE_REC709)
cfg |= GSC_OUT_RGB_HD_WIDE;
else
cfg |= GSC_OUT_RGB_SD_WIDE;
if (frame->fmt->pixelformat == V4L2_PIX_FMT_RGB565X)
cfg |= GSC_OUT_RGB565;
else if (frame->fmt->pixelformat == V4L2_PIX_FMT_RGB32)
cfg |= GSC_OUT_XRGB8888;
writel(cfg, dev->regs + GSC_OUT_CON);
}
void gsc_hw_set_out_image_format(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
struct gsc_frame *frame = &ctx->d_frame;
u32 i, depth = 0;
u32 cfg;
cfg = readl(dev->regs + GSC_OUT_CON);
cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK |
GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK |
GSC_OUT_TILE_TYPE_MASK | GSC_OUT_TILE_MODE);
writel(cfg, dev->regs + GSC_OUT_CON);
if (is_rgb(frame->fmt->color)) {
gsc_hw_set_out_image_rgb(ctx);
return;
}
if (ctx->out_path != GSC_DMA) {
cfg |= GSC_OUT_YUV444;
goto end_set;
}
for (i = 0; i < frame->fmt->num_planes; i++)
depth += frame->fmt->depth[i];
switch (frame->fmt->num_comp) {
case 1:
cfg |= GSC_OUT_YUV422_1P;
if (frame->fmt->yorder == GSC_LSB_Y)
cfg |= GSC_OUT_YUV422_1P_ORDER_LSB_Y;
else
cfg |= GSC_OUT_YUV422_1P_OEDER_LSB_C;
if (frame->fmt->corder == GSC_CBCR)
cfg |= GSC_OUT_CHROMA_ORDER_CBCR;
else
cfg |= GSC_OUT_CHROMA_ORDER_CRCB;
break;
case 2:
if (depth == 12)
cfg |= GSC_OUT_YUV420_2P;
else
cfg |= GSC_OUT_YUV422_2P;
if (frame->fmt->corder == GSC_CBCR)
cfg |= GSC_OUT_CHROMA_ORDER_CBCR;
else
cfg |= GSC_OUT_CHROMA_ORDER_CRCB;
break;
case 3:
cfg |= GSC_OUT_YUV420_3P;
break;
}
if (is_tiled(frame->fmt))
cfg |= GSC_OUT_TILE_C_16x8 | GSC_OUT_TILE_MODE;
end_set:
writel(cfg, dev->regs + GSC_OUT_CON);
}
void gsc_hw_set_prescaler(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
struct gsc_scaler *sc = &ctx->scaler;
u32 cfg;
cfg = GSC_PRESC_SHFACTOR(sc->pre_shfactor);
cfg |= GSC_PRESC_H_RATIO(sc->pre_hratio);
cfg |= GSC_PRESC_V_RATIO(sc->pre_vratio);
writel(cfg, dev->regs + GSC_PRE_SCALE_RATIO);
}
void gsc_hw_set_mainscaler(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
struct gsc_scaler *sc = &ctx->scaler;
u32 cfg;
cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio);
writel(cfg, dev->regs + GSC_MAIN_H_RATIO);
cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio);
writel(cfg, dev->regs + GSC_MAIN_V_RATIO);
}
void gsc_hw_set_rotation(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
u32 cfg;
cfg = readl(dev->regs + GSC_IN_CON);
cfg &= ~GSC_IN_ROT_MASK;
switch (ctx->gsc_ctrls.rotate->val) {
case 270:
cfg |= GSC_IN_ROT_270;
break;
case 180:
cfg |= GSC_IN_ROT_180;
break;
case 90:
if (ctx->gsc_ctrls.hflip->val)
cfg |= GSC_IN_ROT_90_XFLIP;
else if (ctx->gsc_ctrls.vflip->val)
cfg |= GSC_IN_ROT_90_YFLIP;
else
cfg |= GSC_IN_ROT_90;
break;
case 0:
if (ctx->gsc_ctrls.hflip->val)
cfg |= GSC_IN_ROT_XFLIP;
else if (ctx->gsc_ctrls.vflip->val)
cfg |= GSC_IN_ROT_YFLIP;
}
writel(cfg, dev->regs + GSC_IN_CON);
}
void gsc_hw_set_global_alpha(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
struct gsc_frame *frame = &ctx->d_frame;
u32 cfg;
if (!is_rgb(frame->fmt->color)) {
pr_debug("Not a RGB format");
return;
}
cfg = readl(dev->regs + GSC_OUT_CON);
cfg &= ~GSC_OUT_GLOBAL_ALPHA_MASK;
cfg |= GSC_OUT_GLOBAL_ALPHA(ctx->gsc_ctrls.global_alpha->val);
writel(cfg, dev->regs + GSC_OUT_CON);
}
void gsc_hw_set_sfr_update(struct gsc_ctx *ctx)
{
struct gsc_dev *dev = ctx->gsc_dev;
u32 cfg;
cfg = readl(dev->regs + GSC_ENABLE);
cfg |= GSC_ENABLE_SFR_UPDATE;
writel(cfg, dev->regs + GSC_ENABLE);
}
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