1 files changed, 426 insertions, 0 deletions

diff --git a/drivers/media/platform/samsung/exynos-gsc/gsc-regs.c b/drivers/media/platform/samsung/exynos-gsc/gsc-regs.c
new file mode 100644
index 000000000..995a1f0f8
--- /dev/null
+++ b/drivers/media/platform/samsung/exynos-gsc/gsc-regs.c
@@ -0,0 +1,426 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * Samsung EXYNOS5 SoC series G-Scaler driver
+ */
+
+#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);
+}