--- /dev/null
+/*
+ * Copyright (C) 2012 Samsung Electronics Co.Ltd
+ * Authors:
+ * Eunchul Kim <chulspro.kim@samsung.com>
+ * Jinyoung Jeon <jy0.jeon@samsung.com>
+ * Sangmin Lee <lsmin.lee@samsung.com>
+ *
+ * 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/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/pm_runtime.h>
+#include <plat/map-base.h>
+
+#include <drm/drmP.h>
+#include <drm/exynos_drm.h>
+#include "regs-gsc.h"
+#include "exynos_drm_drv.h"
+#include "exynos_drm_ipp.h"
+#include "exynos_drm_gsc.h"
+
+/*
+ * GSC stands for General SCaler and
+ * supports image scaler/rotator and input/output DMA operations.
+ * input DMA reads image data from the memory.
+ * output DMA writes image data to memory.
+ * GSC supports image rotation and image effect functions.
+ *
+ * M2M operation : supports crop/scale/rotation/csc so on.
+ * Memory ----> GSC H/W ----> Memory.
+ * Writeback operation : supports cloned screen with FIMD.
+ * FIMD ----> GSC H/W ----> Memory.
+ * Output operation : supports direct display using local path.
+ * Memory ----> GSC H/W ----> FIMD, Mixer.
+ */
+
+/*
+ * TODO
+ * 1. check suspend/resume api if needed.
+ * 2. need to check use case platform_device_id.
+ * 3. check src/dst size with, height.
+ * 4. added check_prepare api for right register.
+ * 5. need to add supported list in prop_list.
+ * 6. check prescaler/scaler optimization.
+ */
+
+#define GSC_MAX_DEVS 4
+#define GSC_MAX_SRC 4
+#define GSC_MAX_DST 16
+#define GSC_RESET_TIMEOUT 50
+#define GSC_BUF_STOP 1
+#define GSC_BUF_START 2
+#define GSC_REG_SZ 16
+#define GSC_WIDTH_ITU_709 1280
+#define GSC_SC_UP_MAX_RATIO 65536
+#define GSC_SC_DOWN_RATIO_7_8 74898
+#define GSC_SC_DOWN_RATIO_6_8 87381
+#define GSC_SC_DOWN_RATIO_5_8 104857
+#define GSC_SC_DOWN_RATIO_4_8 131072
+#define GSC_SC_DOWN_RATIO_3_8 174762
+#define GSC_SC_DOWN_RATIO_2_8 262144
+#define GSC_REFRESH_MIN 12
+#define GSC_REFRESH_MAX 60
+#define GSC_CROP_MAX 8192
+#define GSC_CROP_MIN 32
+#define GSC_SCALE_MAX 4224
+#define GSC_SCALE_MIN 32
+#define GSC_COEF_RATIO 7
+#define GSC_COEF_PHASE 9
+#define GSC_COEF_ATTR 16
+#define GSC_COEF_H_8T 8
+#define GSC_COEF_V_4T 4
+#define GSC_COEF_DEPTH 3
+
+#define get_gsc_context(dev) platform_get_drvdata(to_platform_device(dev))
+#define get_ctx_from_ippdrv(ippdrv) container_of(ippdrv,\
+ struct gsc_context, ippdrv);
+#define gsc_read(offset) readl(ctx->regs + (offset))
+#define gsc_write(cfg, offset) writel(cfg, ctx->regs + (offset))
+
+/*
+ * A structure of scaler.
+ *
+ * @range: narrow, wide.
+ * @pre_shfactor: pre sclaer shift factor.
+ * @pre_hratio: horizontal ratio of the prescaler.
+ * @pre_vratio: vertical ratio of the prescaler.
+ * @main_hratio: the main scaler's horizontal ratio.
+ * @main_vratio: the main scaler's vertical ratio.
+ */
+struct gsc_scaler {
+ bool range;
+ u32 pre_shfactor;
+ u32 pre_hratio;
+ u32 pre_vratio;
+ unsigned long main_hratio;
+ unsigned long main_vratio;
+};
+
+/*
+ * A structure of scaler capability.
+ *
+ * find user manual 49.2 features.
+ * @tile_w: tile mode or rotation width.
+ * @tile_h: tile mode or rotation height.
+ * @w: other cases width.
+ * @h: other cases height.
+ */
+struct gsc_capability {
+ /* tile or rotation */
+ u32 tile_w;
+ u32 tile_h;
+ /* other cases */
+ u32 w;
+ u32 h;
+};
+
+/*
+ * A structure of gsc context.
+ *
+ * @ippdrv: prepare initialization using ippdrv.
+ * @regs_res: register resources.
+ * @regs: memory mapped io registers.
+ * @lock: locking of operations.
+ * @gsc_clk: gsc gate clock.
+ * @sc: scaler infomations.
+ * @id: gsc id.
+ * @irq: irq number.
+ * @rotation: supports rotation of src.
+ * @suspended: qos operations.
+ */
+struct gsc_context {
+ struct exynos_drm_ippdrv ippdrv;
+ struct resource *regs_res;
+ void __iomem *regs;
+ struct mutex lock;
+ struct clk *gsc_clk;
+ struct gsc_scaler sc;
+ int id;
+ int irq;
+ bool rotation;
+ bool suspended;
+};
+
+/* 8-tap Filter Coefficient */
+static const int h_coef_8t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_H_8T] = {
+ { /* Ratio <= 65536 (~8:8) */
+ { 0, 0, 0, 128, 0, 0, 0, 0 },
+ { -1, 2, -6, 127, 7, -2, 1, 0 },
+ { -1, 4, -12, 125, 16, -5, 1, 0 },
+ { -1, 5, -15, 120, 25, -8, 2, 0 },
+ { -1, 6, -18, 114, 35, -10, 3, -1 },
+ { -1, 6, -20, 107, 46, -13, 4, -1 },
+ { -2, 7, -21, 99, 57, -16, 5, -1 },
+ { -1, 6, -20, 89, 68, -18, 5, -1 },
+ { -1, 6, -20, 79, 79, -20, 6, -1 },
+ { -1, 5, -18, 68, 89, -20, 6, -1 },
+ { -1, 5, -16, 57, 99, -21, 7, -2 },
+ { -1, 4, -13, 46, 107, -20, 6, -1 },
+ { -1, 3, -10, 35, 114, -18, 6, -1 },
+ { 0, 2, -8, 25, 120, -15, 5, -1 },
+ { 0, 1, -5, 16, 125, -12, 4, -1 },
+ { 0, 1, -2, 7, 127, -6, 2, -1 }
+ }, { /* 65536 < Ratio <= 74898 (~8:7) */
+ { 3, -8, 14, 111, 13, -8, 3, 0 },
+ { 2, -6, 7, 112, 21, -10, 3, -1 },
+ { 2, -4, 1, 110, 28, -12, 4, -1 },
+ { 1, -2, -3, 106, 36, -13, 4, -1 },
+ { 1, -1, -7, 103, 44, -15, 4, -1 },
+ { 1, 1, -11, 97, 53, -16, 4, -1 },
+ { 0, 2, -13, 91, 61, -16, 4, -1 },
+ { 0, 3, -15, 85, 69, -17, 4, -1 },
+ { 0, 3, -16, 77, 77, -16, 3, 0 },
+ { -1, 4, -17, 69, 85, -15, 3, 0 },
+ { -1, 4, -16, 61, 91, -13, 2, 0 },
+ { -1, 4, -16, 53, 97, -11, 1, 1 },
+ { -1, 4, -15, 44, 103, -7, -1, 1 },
+ { -1, 4, -13, 36, 106, -3, -2, 1 },
+ { -1, 4, -12, 28, 110, 1, -4, 2 },
+ { -1, 3, -10, 21, 112, 7, -6, 2 }
+ }, { /* 74898 < Ratio <= 87381 (~8:6) */
+ { 2, -11, 25, 96, 25, -11, 2, 0 },
+ { 2, -10, 19, 96, 31, -12, 2, 0 },
+ { 2, -9, 14, 94, 37, -12, 2, 0 },
+ { 2, -8, 10, 92, 43, -12, 1, 0 },
+ { 2, -7, 5, 90, 49, -12, 1, 0 },
+ { 2, -5, 1, 86, 55, -12, 0, 1 },
+ { 2, -4, -2, 82, 61, -11, -1, 1 },
+ { 1, -3, -5, 77, 67, -9, -1, 1 },
+ { 1, -2, -7, 72, 72, -7, -2, 1 },
+ { 1, -1, -9, 67, 77, -5, -3, 1 },
+ { 1, -1, -11, 61, 82, -2, -4, 2 },
+ { 1, 0, -12, 55, 86, 1, -5, 2 },
+ { 0, 1, -12, 49, 90, 5, -7, 2 },
+ { 0, 1, -12, 43, 92, 10, -8, 2 },
+ { 0, 2, -12, 37, 94, 14, -9, 2 },
+ { 0, 2, -12, 31, 96, 19, -10, 2 }
+ }, { /* 87381 < Ratio <= 104857 (~8:5) */
+ { -1, -8, 33, 80, 33, -8, -1, 0 },
+ { -1, -8, 28, 80, 37, -7, -2, 1 },
+ { 0, -8, 24, 79, 41, -7, -2, 1 },
+ { 0, -8, 20, 78, 46, -6, -3, 1 },
+ { 0, -8, 16, 76, 50, -4, -3, 1 },
+ { 0, -7, 13, 74, 54, -3, -4, 1 },
+ { 1, -7, 10, 71, 58, -1, -5, 1 },
+ { 1, -6, 6, 68, 62, 1, -5, 1 },
+ { 1, -6, 4, 65, 65, 4, -6, 1 },
+ { 1, -5, 1, 62, 68, 6, -6, 1 },
+ { 1, -5, -1, 58, 71, 10, -7, 1 },
+ { 1, -4, -3, 54, 74, 13, -7, 0 },
+ { 1, -3, -4, 50, 76, 16, -8, 0 },
+ { 1, -3, -6, 46, 78, 20, -8, 0 },
+ { 1, -2, -7, 41, 79, 24, -8, 0 },
+ { 1, -2, -7, 37, 80, 28, -8, -1 }
+ }, { /* 104857 < Ratio <= 131072 (~8:4) */
+ { -3, 0, 35, 64, 35, 0, -3, 0 },
+ { -3, -1, 32, 64, 38, 1, -3, 0 },
+ { -2, -2, 29, 63, 41, 2, -3, 0 },
+ { -2, -3, 27, 63, 43, 4, -4, 0 },
+ { -2, -3, 24, 61, 46, 6, -4, 0 },
+ { -2, -3, 21, 60, 49, 7, -4, 0 },
+ { -1, -4, 19, 59, 51, 9, -4, -1 },
+ { -1, -4, 16, 57, 53, 12, -4, -1 },
+ { -1, -4, 14, 55, 55, 14, -4, -1 },
+ { -1, -4, 12, 53, 57, 16, -4, -1 },
+ { -1, -4, 9, 51, 59, 19, -4, -1 },
+ { 0, -4, 7, 49, 60, 21, -3, -2 },
+ { 0, -4, 6, 46, 61, 24, -3, -2 },
+ { 0, -4, 4, 43, 63, 27, -3, -2 },
+ { 0, -3, 2, 41, 63, 29, -2, -2 },
+ { 0, -3, 1, 38, 64, 32, -1, -3 }
+ }, { /* 131072 < Ratio <= 174762 (~8:3) */
+ { -1, 8, 33, 48, 33, 8, -1, 0 },
+ { -1, 7, 31, 49, 35, 9, -1, -1 },
+ { -1, 6, 30, 49, 36, 10, -1, -1 },
+ { -1, 5, 28, 48, 38, 12, -1, -1 },
+ { -1, 4, 26, 48, 39, 13, 0, -1 },
+ { -1, 3, 24, 47, 41, 15, 0, -1 },
+ { -1, 2, 23, 47, 42, 16, 0, -1 },
+ { -1, 2, 21, 45, 43, 18, 1, -1 },
+ { -1, 1, 19, 45, 45, 19, 1, -1 },
+ { -1, 1, 18, 43, 45, 21, 2, -1 },
+ { -1, 0, 16, 42, 47, 23, 2, -1 },
+ { -1, 0, 15, 41, 47, 24, 3, -1 },
+ { -1, 0, 13, 39, 48, 26, 4, -1 },
+ { -1, -1, 12, 38, 48, 28, 5, -1 },
+ { -1, -1, 10, 36, 49, 30, 6, -1 },
+ { -1, -1, 9, 35, 49, 31, 7, -1 }
+ }, { /* 174762 < Ratio <= 262144 (~8:2) */
+ { 2, 13, 30, 38, 30, 13, 2, 0 },
+ { 2, 12, 29, 38, 30, 14, 3, 0 },
+ { 2, 11, 28, 38, 31, 15, 3, 0 },
+ { 2, 10, 26, 38, 32, 16, 4, 0 },
+ { 1, 10, 26, 37, 33, 17, 4, 0 },
+ { 1, 9, 24, 37, 34, 18, 5, 0 },
+ { 1, 8, 24, 37, 34, 19, 5, 0 },
+ { 1, 7, 22, 36, 35, 20, 6, 1 },
+ { 1, 6, 21, 36, 36, 21, 6, 1 },
+ { 1, 6, 20, 35, 36, 22, 7, 1 },
+ { 0, 5, 19, 34, 37, 24, 8, 1 },
+ { 0, 5, 18, 34, 37, 24, 9, 1 },
+ { 0, 4, 17, 33, 37, 26, 10, 1 },
+ { 0, 4, 16, 32, 38, 26, 10, 2 },
+ { 0, 3, 15, 31, 38, 28, 11, 2 },
+ { 0, 3, 14, 30, 38, 29, 12, 2 }
+ }
+};
+
+/* 4-tap Filter Coefficient */
+static const int v_coef_4t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_V_4T] = {
+ { /* Ratio <= 65536 (~8:8) */
+ { 0, 128, 0, 0 },
+ { -4, 127, 5, 0 },
+ { -6, 124, 11, -1 },
+ { -8, 118, 19, -1 },
+ { -8, 111, 27, -2 },
+ { -8, 102, 37, -3 },
+ { -8, 92, 48, -4 },
+ { -7, 81, 59, -5 },
+ { -6, 70, 70, -6 },
+ { -5, 59, 81, -7 },
+ { -4, 48, 92, -8 },
+ { -3, 37, 102, -8 },
+ { -2, 27, 111, -8 },
+ { -1, 19, 118, -8 },
+ { -1, 11, 124, -6 },
+ { 0, 5, 127, -4 }
+ }, { /* 65536 < Ratio <= 74898 (~8:7) */
+ { 8, 112, 8, 0 },
+ { 4, 111, 14, -1 },
+ { 1, 109, 20, -2 },
+ { -2, 105, 27, -2 },
+ { -3, 100, 34, -3 },
+ { -5, 93, 43, -3 },
+ { -5, 86, 51, -4 },
+ { -5, 77, 60, -4 },
+ { -5, 69, 69, -5 },
+ { -4, 60, 77, -5 },
+ { -4, 51, 86, -5 },
+ { -3, 43, 93, -5 },
+ { -3, 34, 100, -3 },
+ { -2, 27, 105, -2 },
+ { -2, 20, 109, 1 },
+ { -1, 14, 111, 4 }
+ }, { /* 74898 < Ratio <= 87381 (~8:6) */
+ { 16, 96, 16, 0 },
+ { 12, 97, 21, -2 },
+ { 8, 96, 26, -2 },
+ { 5, 93, 32, -2 },
+ { 2, 89, 39, -2 },
+ { 0, 84, 46, -2 },
+ { -1, 79, 53, -3 },
+ { -2, 73, 59, -2 },
+ { -2, 66, 66, -2 },
+ { -2, 59, 73, -2 },
+ { -3, 53, 79, -1 },
+ { -2, 46, 84, 0 },
+ { -2, 39, 89, 2 },
+ { -2, 32, 93, 5 },
+ { -2, 26, 96, 8 },
+ { -2, 21, 97, 12 }
+ }, { /* 87381 < Ratio <= 104857 (~8:5) */
+ { 22, 84, 22, 0 },
+ { 18, 85, 26, -1 },
+ { 14, 84, 31, -1 },
+ { 11, 82, 36, -1 },
+ { 8, 79, 42, -1 },
+ { 6, 76, 47, -1 },
+ { 4, 72, 52, 0 },
+ { 2, 68, 58, 0 },
+ { 1, 63, 63, 1 },
+ { 0, 58, 68, 2 },
+ { 0, 52, 72, 4 },
+ { -1, 47, 76, 6 },
+ { -1, 42, 79, 8 },
+ { -1, 36, 82, 11 },
+ { -1, 31, 84, 14 },
+ { -1, 26, 85, 18 }
+ }, { /* 104857 < Ratio <= 131072 (~8:4) */
+ { 26, 76, 26, 0 },
+ { 22, 76, 30, 0 },
+ { 19, 75, 34, 0 },
+ { 16, 73, 38, 1 },
+ { 13, 71, 43, 1 },
+ { 10, 69, 47, 2 },
+ { 8, 66, 51, 3 },
+ { 6, 63, 55, 4 },
+ { 5, 59, 59, 5 },
+ { 4, 55, 63, 6 },
+ { 3, 51, 66, 8 },
+ { 2, 47, 69, 10 },
+ { 1, 43, 71, 13 },
+ { 1, 38, 73, 16 },
+ { 0, 34, 75, 19 },
+ { 0, 30, 76, 22 }
+ }, { /* 131072 < Ratio <= 174762 (~8:3) */
+ { 29, 70, 29, 0 },
+ { 26, 68, 32, 2 },
+ { 23, 67, 36, 2 },
+ { 20, 66, 39, 3 },
+ { 17, 65, 43, 3 },
+ { 15, 63, 46, 4 },
+ { 12, 61, 50, 5 },
+ { 10, 58, 53, 7 },
+ { 8, 56, 56, 8 },
+ { 7, 53, 58, 10 },
+ { 5, 50, 61, 12 },
+ { 4, 46, 63, 15 },
+ { 3, 43, 65, 17 },
+ { 3, 39, 66, 20 },
+ { 2, 36, 67, 23 },
+ { 2, 32, 68, 26 }
+ }, { /* 174762 < Ratio <= 262144 (~8:2) */
+ { 32, 64, 32, 0 },
+ { 28, 63, 34, 3 },
+ { 25, 62, 37, 4 },
+ { 22, 62, 40, 4 },
+ { 19, 61, 43, 5 },
+ { 17, 59, 46, 6 },
+ { 15, 58, 48, 7 },
+ { 13, 55, 51, 9 },
+ { 11, 53, 53, 11 },
+ { 9, 51, 55, 13 },
+ { 7, 48, 58, 15 },
+ { 6, 46, 59, 17 },
+ { 5, 43, 61, 19 },
+ { 4, 40, 62, 22 },
+ { 4, 37, 62, 25 },
+ { 3, 34, 63, 28 }
+ }
+};
+
+static int gsc_sw_reset(struct gsc_context *ctx)
+{
+ u32 cfg;
+ int count = GSC_RESET_TIMEOUT;
+
+ /* s/w reset */
+ cfg = (GSC_SW_RESET_SRESET);
+ gsc_write(cfg, GSC_SW_RESET);
+
+ /* wait s/w reset complete */
+ while (count--) {
+ cfg = gsc_read(GSC_SW_RESET);
+ if (!cfg)
+ break;
+ usleep_range(1000, 2000);
+ }
+
+ if (cfg) {
+ DRM_ERROR("failed to reset gsc h/w.\n");
+ return -EBUSY;
+ }
+
+ /* reset sequence */
+ cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
+ cfg |= (GSC_IN_BASE_ADDR_MASK |
+ GSC_IN_BASE_ADDR_PINGPONG(0));
+ gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK);
+ gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK);
+ gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK);
+
+ cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
+ cfg |= (GSC_OUT_BASE_ADDR_MASK |
+ GSC_OUT_BASE_ADDR_PINGPONG(0));
+ gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK);
+ gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK);
+ gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK);
+
+ return 0;
+}
+
+static void gsc_set_gscblk_fimd_wb(struct gsc_context *ctx, bool enable)
+{
+ u32 gscblk_cfg;
+
+ gscblk_cfg = readl(SYSREG_GSCBLK_CFG1);
+
+ if (enable)
+ gscblk_cfg |= GSC_BLK_DISP1WB_DEST(ctx->id) |
+ GSC_BLK_GSCL_WB_IN_SRC_SEL(ctx->id) |
+ GSC_BLK_SW_RESET_WB_DEST(ctx->id);
+ else
+ gscblk_cfg |= GSC_BLK_PXLASYNC_LO_MASK_WB(ctx->id);
+
+ writel(gscblk_cfg, SYSREG_GSCBLK_CFG1);
+}
+
+static void gsc_handle_irq(struct gsc_context *ctx, bool enable,
+ bool overflow, bool done)
+{
+ u32 cfg;
+
+ DRM_DEBUG_KMS("enable[%d]overflow[%d]level[%d]\n",
+ enable, overflow, done);
+
+ cfg = gsc_read(GSC_IRQ);
+ cfg |= (GSC_IRQ_OR_MASK | GSC_IRQ_FRMDONE_MASK);
+
+ if (enable)
+ cfg |= GSC_IRQ_ENABLE;
+ else
+ cfg &= ~GSC_IRQ_ENABLE;
+
+ if (overflow)
+ cfg &= ~GSC_IRQ_OR_MASK;
+ else
+ cfg |= GSC_IRQ_OR_MASK;
+
+ if (done)
+ cfg &= ~GSC_IRQ_FRMDONE_MASK;
+ else
+ cfg |= GSC_IRQ_FRMDONE_MASK;
+
+ gsc_write(cfg, GSC_IRQ);
+}
+
+
+static int gsc_src_set_fmt(struct device *dev, u32 fmt)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ u32 cfg;
+
+ DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
+
+ cfg = gsc_read(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 |
+ GSC_IN_CHROM_STRIDE_SEL_MASK | GSC_IN_RB_SWAP_MASK);
+
+ switch (fmt) {
+ case DRM_FORMAT_RGB565:
+ cfg |= GSC_IN_RGB565;
+ break;
+ case DRM_FORMAT_XRGB8888:
+ cfg |= GSC_IN_XRGB8888;
+ break;
+ case DRM_FORMAT_BGRX8888:
+ cfg |= (GSC_IN_XRGB8888 | GSC_IN_RB_SWAP);
+ break;
+ case DRM_FORMAT_YUYV:
+ cfg |= (GSC_IN_YUV422_1P |
+ GSC_IN_YUV422_1P_ORDER_LSB_Y |
+ GSC_IN_CHROMA_ORDER_CBCR);
+ break;
+ case DRM_FORMAT_YVYU:
+ cfg |= (GSC_IN_YUV422_1P |
+ GSC_IN_YUV422_1P_ORDER_LSB_Y |
+ GSC_IN_CHROMA_ORDER_CRCB);
+ break;
+ case DRM_FORMAT_UYVY:
+ cfg |= (GSC_IN_YUV422_1P |
+ GSC_IN_YUV422_1P_OEDER_LSB_C |
+ GSC_IN_CHROMA_ORDER_CBCR);
+ break;
+ case DRM_FORMAT_VYUY:
+ cfg |= (GSC_IN_YUV422_1P |
+ GSC_IN_YUV422_1P_OEDER_LSB_C |
+ GSC_IN_CHROMA_ORDER_CRCB);
+ break;
+ case DRM_FORMAT_NV21:
+ case DRM_FORMAT_NV61:
+ cfg |= (GSC_IN_CHROMA_ORDER_CRCB |
+ GSC_IN_YUV420_2P);
+ break;
+ case DRM_FORMAT_YUV422:
+ cfg |= GSC_IN_YUV422_3P;
+ break;
+ case DRM_FORMAT_YUV420:
+ case DRM_FORMAT_YVU420:
+ cfg |= GSC_IN_YUV420_3P;
+ break;
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV16:
+ cfg |= (GSC_IN_CHROMA_ORDER_CBCR |
+ GSC_IN_YUV420_2P);
+ break;
+ default:
+ dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt);
+ return -EINVAL;
+ }
+
+ gsc_write(cfg, GSC_IN_CON);
+
+ return 0;
+}
+
+static int gsc_src_set_transf(struct device *dev,
+ enum drm_exynos_degree degree,
+ enum drm_exynos_flip flip, bool *swap)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ u32 cfg;
+
+ DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip);
+
+ cfg = gsc_read(GSC_IN_CON);
+ cfg &= ~GSC_IN_ROT_MASK;
+
+ switch (degree) {
+ case EXYNOS_DRM_DEGREE_0:
+ if (flip & EXYNOS_DRM_FLIP_VERTICAL)
+ cfg |= GSC_IN_ROT_XFLIP;
+ if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
+ cfg |= GSC_IN_ROT_YFLIP;
+ break;
+ case EXYNOS_DRM_DEGREE_90:
+ if (flip & EXYNOS_DRM_FLIP_VERTICAL)
+ cfg |= GSC_IN_ROT_90_XFLIP;
+ else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
+ cfg |= GSC_IN_ROT_90_YFLIP;
+ else
+ cfg |= GSC_IN_ROT_90;
+ break;
+ case EXYNOS_DRM_DEGREE_180:
+ cfg |= GSC_IN_ROT_180;
+ break;
+ case EXYNOS_DRM_DEGREE_270:
+ cfg |= GSC_IN_ROT_270;
+ break;
+ default:
+ dev_err(ippdrv->dev, "inavlid degree value %d.\n", degree);
+ return -EINVAL;
+ }
+
+ gsc_write(cfg, GSC_IN_CON);
+
+ ctx->rotation = cfg &
+ (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0;
+ *swap = ctx->rotation;
+
+ return 0;
+}
+
+static int gsc_src_set_size(struct device *dev, int swap,
+ struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct drm_exynos_pos img_pos = *pos;
+ struct gsc_scaler *sc = &ctx->sc;
+ u32 cfg;
+
+ DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n",
+ swap, pos->x, pos->y, pos->w, pos->h);
+
+ if (swap) {
+ img_pos.w = pos->h;
+ img_pos.h = pos->w;
+ }
+
+ /* pixel offset */
+ cfg = (GSC_SRCIMG_OFFSET_X(img_pos.x) |
+ GSC_SRCIMG_OFFSET_Y(img_pos.y));
+ gsc_write(cfg, GSC_SRCIMG_OFFSET);
+
+ /* cropped size */
+ cfg = (GSC_CROPPED_WIDTH(img_pos.w) |
+ GSC_CROPPED_HEIGHT(img_pos.h));
+ gsc_write(cfg, GSC_CROPPED_SIZE);
+
+ DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize);
+
+ /* original size */
+ cfg = gsc_read(GSC_SRCIMG_SIZE);
+ cfg &= ~(GSC_SRCIMG_HEIGHT_MASK |
+ GSC_SRCIMG_WIDTH_MASK);
+
+ cfg |= (GSC_SRCIMG_WIDTH(sz->hsize) |
+ GSC_SRCIMG_HEIGHT(sz->vsize));
+
+ gsc_write(cfg, GSC_SRCIMG_SIZE);
+
+ cfg = gsc_read(GSC_IN_CON);
+ cfg &= ~GSC_IN_RGB_TYPE_MASK;
+
+ DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range);
+
+ if (pos->w >= GSC_WIDTH_ITU_709)
+ if (sc->range)
+ cfg |= GSC_IN_RGB_HD_WIDE;
+ else
+ cfg |= GSC_IN_RGB_HD_NARROW;
+ else
+ if (sc->range)
+ cfg |= GSC_IN_RGB_SD_WIDE;
+ else
+ cfg |= GSC_IN_RGB_SD_NARROW;
+
+ gsc_write(cfg, GSC_IN_CON);
+
+ return 0;
+}
+
+static int gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id,
+ enum drm_exynos_ipp_buf_type buf_type)
+{
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ bool masked;
+ u32 cfg;
+ u32 mask = 0x00000001 << buf_id;
+
+ DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type);
+
+ /* mask register set */
+ cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
+
+ switch (buf_type) {
+ case IPP_BUF_ENQUEUE:
+ masked = false;
+ break;
+ case IPP_BUF_DEQUEUE:
+ masked = true;
+ break;
+ default:
+ dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n");
+ return -EINVAL;
+ }
+
+ /* sequence id */
+ cfg &= ~mask;
+ cfg |= masked << buf_id;
+ gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK);
+ gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK);
+ gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK);
+
+ return 0;
+}
+
+static int gsc_src_set_addr(struct device *dev,
+ struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id,
+ enum drm_exynos_ipp_buf_type buf_type)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
+ struct drm_exynos_ipp_property *property;
+
+ if (!c_node) {
+ DRM_ERROR("failed to get c_node.\n");
+ return -EFAULT;
+ }
+
+ property = &c_node->property;
+
+ DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n",
+ property->prop_id, buf_id, buf_type);
+
+ if (buf_id > GSC_MAX_SRC) {
+ dev_info(ippdrv->dev, "inavlid buf_id %d.\n", buf_id);
+ return -EINVAL;
+ }
+
+ /* address register set */
+ switch (buf_type) {
+ case IPP_BUF_ENQUEUE:
+ gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y],
+ GSC_IN_BASE_ADDR_Y(buf_id));
+ gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
+ GSC_IN_BASE_ADDR_CB(buf_id));
+ gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
+ GSC_IN_BASE_ADDR_CR(buf_id));
+ break;
+ case IPP_BUF_DEQUEUE:
+ gsc_write(0x0, GSC_IN_BASE_ADDR_Y(buf_id));
+ gsc_write(0x0, GSC_IN_BASE_ADDR_CB(buf_id));
+ gsc_write(0x0, GSC_IN_BASE_ADDR_CR(buf_id));
+ break;
+ default:
+ /* bypass */
+ break;
+ }
+
+ return gsc_src_set_buf_seq(ctx, buf_id, buf_type);
+}
+
+static struct exynos_drm_ipp_ops gsc_src_ops = {
+ .set_fmt = gsc_src_set_fmt,
+ .set_transf = gsc_src_set_transf,
+ .set_size = gsc_src_set_size,
+ .set_addr = gsc_src_set_addr,
+};
+
+static int gsc_dst_set_fmt(struct device *dev, u32 fmt)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ u32 cfg;
+
+ DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
+
+ cfg = gsc_read(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_CHROM_STRIDE_SEL_MASK | GSC_OUT_RB_SWAP_MASK |
+ GSC_OUT_GLOBAL_ALPHA_MASK);
+
+ switch (fmt) {
+ case DRM_FORMAT_RGB565:
+ cfg |= GSC_OUT_RGB565;
+ break;
+ case DRM_FORMAT_XRGB8888:
+ cfg |= GSC_OUT_XRGB8888;
+ break;
+ case DRM_FORMAT_BGRX8888:
+ cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_RB_SWAP);
+ break;
+ case DRM_FORMAT_YUYV:
+ cfg |= (GSC_OUT_YUV422_1P |
+ GSC_OUT_YUV422_1P_ORDER_LSB_Y |
+ GSC_OUT_CHROMA_ORDER_CBCR);
+ break;
+ case DRM_FORMAT_YVYU:
+ cfg |= (GSC_OUT_YUV422_1P |
+ GSC_OUT_YUV422_1P_ORDER_LSB_Y |
+ GSC_OUT_CHROMA_ORDER_CRCB);
+ break;
+ case DRM_FORMAT_UYVY:
+ cfg |= (GSC_OUT_YUV422_1P |
+ GSC_OUT_YUV422_1P_OEDER_LSB_C |
+ GSC_OUT_CHROMA_ORDER_CBCR);
+ break;
+ case DRM_FORMAT_VYUY:
+ cfg |= (GSC_OUT_YUV422_1P |
+ GSC_OUT_YUV422_1P_OEDER_LSB_C |
+ GSC_OUT_CHROMA_ORDER_CRCB);
+ break;
+ case DRM_FORMAT_NV21:
+ case DRM_FORMAT_NV61:
+ cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_2P);
+ break;
+ case DRM_FORMAT_YUV422:
+ case DRM_FORMAT_YUV420:
+ case DRM_FORMAT_YVU420:
+ cfg |= GSC_OUT_YUV420_3P;
+ break;
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV16:
+ cfg |= (GSC_OUT_CHROMA_ORDER_CBCR |
+ GSC_OUT_YUV420_2P);
+ break;
+ default:
+ dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt);
+ return -EINVAL;
+ }
+
+ gsc_write(cfg, GSC_OUT_CON);
+
+ return 0;
+}
+
+static int gsc_dst_set_transf(struct device *dev,
+ enum drm_exynos_degree degree,
+ enum drm_exynos_flip flip, bool *swap)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ u32 cfg;
+
+ DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip);
+
+ cfg = gsc_read(GSC_IN_CON);
+ cfg &= ~GSC_IN_ROT_MASK;
+
+ switch (degree) {
+ case EXYNOS_DRM_DEGREE_0:
+ if (flip & EXYNOS_DRM_FLIP_VERTICAL)
+ cfg |= GSC_IN_ROT_XFLIP;
+ if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
+ cfg |= GSC_IN_ROT_YFLIP;
+ break;
+ case EXYNOS_DRM_DEGREE_90:
+ if (flip & EXYNOS_DRM_FLIP_VERTICAL)
+ cfg |= GSC_IN_ROT_90_XFLIP;
+ else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
+ cfg |= GSC_IN_ROT_90_YFLIP;
+ else
+ cfg |= GSC_IN_ROT_90;
+ break;
+ case EXYNOS_DRM_DEGREE_180:
+ cfg |= GSC_IN_ROT_180;
+ break;
+ case EXYNOS_DRM_DEGREE_270:
+ cfg |= GSC_IN_ROT_270;
+ break;
+ default:
+ dev_err(ippdrv->dev, "inavlid degree value %d.\n", degree);
+ return -EINVAL;
+ }
+
+ gsc_write(cfg, GSC_IN_CON);
+
+ ctx->rotation = cfg &
+ (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0;
+ *swap = ctx->rotation;
+
+ return 0;
+}
+
+static int gsc_get_ratio_shift(u32 src, u32 dst, u32 *ratio)
+{
+ DRM_DEBUG_KMS("src[%d]dst[%d]\n", src, dst);
+
+ if (src >= dst * 8) {
+ DRM_ERROR("failed to make ratio and shift.\n");
+ return -EINVAL;
+ } else if (src >= dst * 4)
+ *ratio = 4;
+ else if (src >= dst * 2)
+ *ratio = 2;
+ else
+ *ratio = 1;
+
+ return 0;
+}
+
+static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor)
+{
+ if (hratio == 4 && vratio == 4)
+ *shfactor = 4;
+ else if ((hratio == 4 && vratio == 2) ||
+ (hratio == 2 && vratio == 4))
+ *shfactor = 3;
+ else if ((hratio == 4 && vratio == 1) ||
+ (hratio == 1 && vratio == 4) ||
+ (hratio == 2 && vratio == 2))
+ *shfactor = 2;
+ else if (hratio == 1 && vratio == 1)
+ *shfactor = 0;
+ else
+ *shfactor = 1;
+}
+
+static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc,
+ struct drm_exynos_pos *src, struct drm_exynos_pos *dst)
+{
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ u32 cfg;
+ u32 src_w, src_h, dst_w, dst_h;
+ int ret = 0;
+
+ src_w = src->w;
+ src_h = src->h;
+
+ if (ctx->rotation) {
+ dst_w = dst->h;
+ dst_h = dst->w;
+ } else {
+ dst_w = dst->w;
+ dst_h = dst->h;
+ }
+
+ ret = gsc_get_ratio_shift(src_w, dst_w, &sc->pre_hratio);
+ if (ret) {
+ dev_err(ippdrv->dev, "failed to get ratio horizontal.\n");
+ return ret;
+ }
+
+ ret = gsc_get_ratio_shift(src_h, dst_h, &sc->pre_vratio);
+ if (ret) {
+ dev_err(ippdrv->dev, "failed to get ratio vertical.\n");
+ return ret;
+ }
+
+ DRM_DEBUG_KMS("pre_hratio[%d]pre_vratio[%d]\n",
+ sc->pre_hratio, sc->pre_vratio);
+
+ sc->main_hratio = (src_w << 16) / dst_w;
+ sc->main_vratio = (src_h << 16) / dst_h;
+
+ DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n",
+ sc->main_hratio, sc->main_vratio);
+
+ gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio,
+ &sc->pre_shfactor);
+
+ DRM_DEBUG_KMS("pre_shfactor[%d]\n", sc->pre_shfactor);
+
+ cfg = (GSC_PRESC_SHFACTOR(sc->pre_shfactor) |
+ GSC_PRESC_H_RATIO(sc->pre_hratio) |
+ GSC_PRESC_V_RATIO(sc->pre_vratio));
+ gsc_write(cfg, GSC_PRE_SCALE_RATIO);
+
+ return ret;
+}
+
+static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio)
+{
+ int i, j, k, sc_ratio;
+
+ if (main_hratio <= GSC_SC_UP_MAX_RATIO)
+ sc_ratio = 0;
+ else if (main_hratio <= GSC_SC_DOWN_RATIO_7_8)
+ sc_ratio = 1;
+ else if (main_hratio <= GSC_SC_DOWN_RATIO_6_8)
+ sc_ratio = 2;
+ else if (main_hratio <= GSC_SC_DOWN_RATIO_5_8)
+ sc_ratio = 3;
+ else if (main_hratio <= GSC_SC_DOWN_RATIO_4_8)
+ sc_ratio = 4;
+ else if (main_hratio <= GSC_SC_DOWN_RATIO_3_8)
+ sc_ratio = 5;
+ else
+ sc_ratio = 6;
+
+ for (i = 0; i < GSC_COEF_PHASE; i++)
+ for (j = 0; j < GSC_COEF_H_8T; j++)
+ for (k = 0; k < GSC_COEF_DEPTH; k++)
+ gsc_write(h_coef_8t[sc_ratio][i][j],
+ GSC_HCOEF(i, j, k));
+}
+
+static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio)
+{
+ int i, j, k, sc_ratio;
+
+ if (main_vratio <= GSC_SC_UP_MAX_RATIO)
+ sc_ratio = 0;
+ else if (main_vratio <= GSC_SC_DOWN_RATIO_7_8)
+ sc_ratio = 1;
+ else if (main_vratio <= GSC_SC_DOWN_RATIO_6_8)
+ sc_ratio = 2;
+ else if (main_vratio <= GSC_SC_DOWN_RATIO_5_8)
+ sc_ratio = 3;
+ else if (main_vratio <= GSC_SC_DOWN_RATIO_4_8)
+ sc_ratio = 4;
+ else if (main_vratio <= GSC_SC_DOWN_RATIO_3_8)
+ sc_ratio = 5;
+ else
+ sc_ratio = 6;
+
+ for (i = 0; i < GSC_COEF_PHASE; i++)
+ for (j = 0; j < GSC_COEF_V_4T; j++)
+ for (k = 0; k < GSC_COEF_DEPTH; k++)
+ gsc_write(v_coef_4t[sc_ratio][i][j],
+ GSC_VCOEF(i, j, k));
+}
+
+static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc)
+{
+ u32 cfg;
+
+ DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n",
+ sc->main_hratio, sc->main_vratio);
+
+ gsc_set_h_coef(ctx, sc->main_hratio);
+ cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio);
+ gsc_write(cfg, GSC_MAIN_H_RATIO);
+
+ gsc_set_v_coef(ctx, sc->main_vratio);
+ cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio);
+ gsc_write(cfg, GSC_MAIN_V_RATIO);
+}
+
+static int gsc_dst_set_size(struct device *dev, int swap,
+ struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct drm_exynos_pos img_pos = *pos;
+ struct gsc_scaler *sc = &ctx->sc;
+ u32 cfg;
+
+ DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n",
+ swap, pos->x, pos->y, pos->w, pos->h);
+
+ if (swap) {
+ img_pos.w = pos->h;
+ img_pos.h = pos->w;
+ }
+
+ /* pixel offset */
+ cfg = (GSC_DSTIMG_OFFSET_X(pos->x) |
+ GSC_DSTIMG_OFFSET_Y(pos->y));
+ gsc_write(cfg, GSC_DSTIMG_OFFSET);
+
+ /* scaled size */
+ cfg = (GSC_SCALED_WIDTH(img_pos.w) | GSC_SCALED_HEIGHT(img_pos.h));
+ gsc_write(cfg, GSC_SCALED_SIZE);
+
+ DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize);
+
+ /* original size */
+ cfg = gsc_read(GSC_DSTIMG_SIZE);
+ cfg &= ~(GSC_DSTIMG_HEIGHT_MASK |
+ GSC_DSTIMG_WIDTH_MASK);
+ cfg |= (GSC_DSTIMG_WIDTH(sz->hsize) |
+ GSC_DSTIMG_HEIGHT(sz->vsize));
+ gsc_write(cfg, GSC_DSTIMG_SIZE);
+
+ cfg = gsc_read(GSC_OUT_CON);
+ cfg &= ~GSC_OUT_RGB_TYPE_MASK;
+
+ DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range);
+
+ if (pos->w >= GSC_WIDTH_ITU_709)
+ if (sc->range)
+ cfg |= GSC_OUT_RGB_HD_WIDE;
+ else
+ cfg |= GSC_OUT_RGB_HD_NARROW;
+ else
+ if (sc->range)
+ cfg |= GSC_OUT_RGB_SD_WIDE;
+ else
+ cfg |= GSC_OUT_RGB_SD_NARROW;
+
+ gsc_write(cfg, GSC_OUT_CON);
+
+ return 0;
+}
+
+static int gsc_dst_get_buf_seq(struct gsc_context *ctx)
+{
+ u32 cfg, i, buf_num = GSC_REG_SZ;
+ u32 mask = 0x00000001;
+
+ cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
+
+ for (i = 0; i < GSC_REG_SZ; i++)
+ if (cfg & (mask << i))
+ buf_num--;
+
+ DRM_DEBUG_KMS("buf_num[%d]\n", buf_num);
+
+ return buf_num;
+}
+
+static int gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id,
+ enum drm_exynos_ipp_buf_type buf_type)
+{
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ bool masked;
+ u32 cfg;
+ u32 mask = 0x00000001 << buf_id;
+ int ret = 0;
+
+ DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type);
+
+ mutex_lock(&ctx->lock);
+
+ /* mask register set */
+ cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
+
+ switch (buf_type) {
+ case IPP_BUF_ENQUEUE:
+ masked = false;
+ break;
+ case IPP_BUF_DEQUEUE:
+ masked = true;
+ break;
+ default:
+ dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n");
+ ret = -EINVAL;
+ goto err_unlock;
+ }
+
+ /* sequence id */
+ cfg &= ~mask;
+ cfg |= masked << buf_id;
+ gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK);
+ gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK);
+ gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK);
+
+ /* interrupt enable */
+ if (buf_type == IPP_BUF_ENQUEUE &&
+ gsc_dst_get_buf_seq(ctx) >= GSC_BUF_START)
+ gsc_handle_irq(ctx, true, false, true);
+
+ /* interrupt disable */
+ if (buf_type == IPP_BUF_DEQUEUE &&
+ gsc_dst_get_buf_seq(ctx) <= GSC_BUF_STOP)
+ gsc_handle_irq(ctx, false, false, true);
+
+err_unlock:
+ mutex_unlock(&ctx->lock);
+ return ret;
+}
+
+static int gsc_dst_set_addr(struct device *dev,
+ struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id,
+ enum drm_exynos_ipp_buf_type buf_type)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
+ struct drm_exynos_ipp_property *property;
+
+ if (!c_node) {
+ DRM_ERROR("failed to get c_node.\n");
+ return -EFAULT;
+ }
+
+ property = &c_node->property;
+
+ DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n",
+ property->prop_id, buf_id, buf_type);
+
+ if (buf_id > GSC_MAX_DST) {
+ dev_info(ippdrv->dev, "inavlid buf_id %d.\n", buf_id);
+ return -EINVAL;
+ }
+
+ /* address register set */
+ switch (buf_type) {
+ case IPP_BUF_ENQUEUE:
+ gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y],
+ GSC_OUT_BASE_ADDR_Y(buf_id));
+ gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
+ GSC_OUT_BASE_ADDR_CB(buf_id));
+ gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
+ GSC_OUT_BASE_ADDR_CR(buf_id));
+ break;
+ case IPP_BUF_DEQUEUE:
+ gsc_write(0x0, GSC_OUT_BASE_ADDR_Y(buf_id));
+ gsc_write(0x0, GSC_OUT_BASE_ADDR_CB(buf_id));
+ gsc_write(0x0, GSC_OUT_BASE_ADDR_CR(buf_id));
+ break;
+ default:
+ /* bypass */
+ break;
+ }
+
+ return gsc_dst_set_buf_seq(ctx, buf_id, buf_type);
+}
+
+static struct exynos_drm_ipp_ops gsc_dst_ops = {
+ .set_fmt = gsc_dst_set_fmt,
+ .set_transf = gsc_dst_set_transf,
+ .set_size = gsc_dst_set_size,
+ .set_addr = gsc_dst_set_addr,
+};
+
+static int gsc_clk_ctrl(struct gsc_context *ctx, bool enable)
+{
+ DRM_DEBUG_KMS("enable[%d]\n", enable);
+
+ if (enable) {
+ clk_enable(ctx->gsc_clk);
+ ctx->suspended = false;
+ } else {
+ clk_disable(ctx->gsc_clk);
+ ctx->suspended = true;
+ }
+
+ return 0;
+}
+
+static int gsc_get_src_buf_index(struct gsc_context *ctx)
+{
+ u32 cfg, curr_index, i;
+ u32 buf_id = GSC_MAX_SRC;
+ int ret;
+
+ DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
+
+ cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
+ curr_index = GSC_IN_CURR_GET_INDEX(cfg);
+
+ for (i = curr_index; i < GSC_MAX_SRC; i++) {
+ if (!((cfg >> i) & 0x1)) {
+ buf_id = i;
+ break;
+ }
+ }
+
+ if (buf_id == GSC_MAX_SRC) {
+ DRM_ERROR("failed to get in buffer index.\n");
+ return -EINVAL;
+ }
+
+ ret = gsc_src_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE);
+ if (ret < 0) {
+ DRM_ERROR("failed to dequeue.\n");
+ return ret;
+ }
+
+ DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg,
+ curr_index, buf_id);
+
+ return buf_id;
+}
+
+static int gsc_get_dst_buf_index(struct gsc_context *ctx)
+{
+ u32 cfg, curr_index, i;
+ u32 buf_id = GSC_MAX_DST;
+ int ret;
+
+ DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
+
+ cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
+ curr_index = GSC_OUT_CURR_GET_INDEX(cfg);
+
+ for (i = curr_index; i < GSC_MAX_DST; i++) {
+ if (!((cfg >> i) & 0x1)) {
+ buf_id = i;
+ break;
+ }
+ }
+
+ if (buf_id == GSC_MAX_DST) {
+ DRM_ERROR("failed to get out buffer index.\n");
+ return -EINVAL;
+ }
+
+ ret = gsc_dst_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE);
+ if (ret < 0) {
+ DRM_ERROR("failed to dequeue.\n");
+ return ret;
+ }
+
+ DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg,
+ curr_index, buf_id);
+
+ return buf_id;
+}
+
+static irqreturn_t gsc_irq_handler(int irq, void *dev_id)
+{
+ struct gsc_context *ctx = dev_id;
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
+ struct drm_exynos_ipp_event_work *event_work =
+ c_node->event_work;
+ u32 status;
+ int buf_id[EXYNOS_DRM_OPS_MAX];
+
+ DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
+
+ status = gsc_read(GSC_IRQ);
+ if (status & GSC_IRQ_STATUS_OR_IRQ) {
+ dev_err(ippdrv->dev, "occurred overflow at %d, status 0x%x.\n",
+ ctx->id, status);
+ return IRQ_NONE;
+ }
+
+ if (status & GSC_IRQ_STATUS_OR_FRM_DONE) {
+ dev_dbg(ippdrv->dev, "occurred frame done at %d, status 0x%x.\n",
+ ctx->id, status);
+
+ buf_id[EXYNOS_DRM_OPS_SRC] = gsc_get_src_buf_index(ctx);
+ if (buf_id[EXYNOS_DRM_OPS_SRC] < 0)
+ return IRQ_HANDLED;
+
+ buf_id[EXYNOS_DRM_OPS_DST] = gsc_get_dst_buf_index(ctx);
+ if (buf_id[EXYNOS_DRM_OPS_DST] < 0)
+ return IRQ_HANDLED;
+
+ DRM_DEBUG_KMS("buf_id_src[%d]buf_id_dst[%d]\n",
+ buf_id[EXYNOS_DRM_OPS_SRC], buf_id[EXYNOS_DRM_OPS_DST]);
+
+ event_work->ippdrv = ippdrv;
+ event_work->buf_id[EXYNOS_DRM_OPS_SRC] =
+ buf_id[EXYNOS_DRM_OPS_SRC];
+ event_work->buf_id[EXYNOS_DRM_OPS_DST] =
+ buf_id[EXYNOS_DRM_OPS_DST];
+ queue_work(ippdrv->event_workq, &event_work->work);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int gsc_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
+{
+ struct drm_exynos_ipp_prop_list *prop_list = &ippdrv->prop_list;
+
+ prop_list->version = 1;
+ prop_list->writeback = 1;
+ prop_list->refresh_min = GSC_REFRESH_MIN;
+ prop_list->refresh_max = GSC_REFRESH_MAX;
+ prop_list->flip = (1 << EXYNOS_DRM_FLIP_VERTICAL) |
+ (1 << EXYNOS_DRM_FLIP_HORIZONTAL);
+ prop_list->degree = (1 << EXYNOS_DRM_DEGREE_0) |
+ (1 << EXYNOS_DRM_DEGREE_90) |
+ (1 << EXYNOS_DRM_DEGREE_180) |
+ (1 << EXYNOS_DRM_DEGREE_270);
+ prop_list->csc = 1;
+ prop_list->crop = 1;
+ prop_list->crop_max.hsize = GSC_CROP_MAX;
+ prop_list->crop_max.vsize = GSC_CROP_MAX;
+ prop_list->crop_min.hsize = GSC_CROP_MIN;
+ prop_list->crop_min.vsize = GSC_CROP_MIN;
+ prop_list->scale = 1;
+ prop_list->scale_max.hsize = GSC_SCALE_MAX;
+ prop_list->scale_max.vsize = GSC_SCALE_MAX;
+ prop_list->scale_min.hsize = GSC_SCALE_MIN;
+ prop_list->scale_min.vsize = GSC_SCALE_MIN;
+
+ return 0;
+}
+
+static inline bool gsc_check_drm_flip(enum drm_exynos_flip flip)
+{
+ switch (flip) {
+ case EXYNOS_DRM_FLIP_NONE:
+ case EXYNOS_DRM_FLIP_VERTICAL:
+ case EXYNOS_DRM_FLIP_HORIZONTAL:
+ case EXYNOS_DRM_FLIP_BOTH:
+ return true;
+ default:
+ DRM_DEBUG_KMS("invalid flip\n");
+ return false;
+ }
+}
+
+static int gsc_ippdrv_check_property(struct device *dev,
+ struct drm_exynos_ipp_property *property)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ struct drm_exynos_ipp_prop_list *pp = &ippdrv->prop_list;
+ struct drm_exynos_ipp_config *config;
+ struct drm_exynos_pos *pos;
+ struct drm_exynos_sz *sz;
+ bool swap;
+ int i;
+
+ for_each_ipp_ops(i) {
+ if ((i == EXYNOS_DRM_OPS_SRC) &&
+ (property->cmd == IPP_CMD_WB))
+ continue;
+
+ config = &property->config[i];
+ pos = &config->pos;
+ sz = &config->sz;
+
+ /* check for flip */
+ if (!gsc_check_drm_flip(config->flip)) {
+ DRM_ERROR("invalid flip.\n");
+ goto err_property;
+ }
+
+ /* check for degree */
+ switch (config->degree) {
+ case EXYNOS_DRM_DEGREE_90:
+ case EXYNOS_DRM_DEGREE_270:
+ swap = true;
+ break;
+ case EXYNOS_DRM_DEGREE_0:
+ case EXYNOS_DRM_DEGREE_180:
+ swap = false;
+ break;
+ default:
+ DRM_ERROR("invalid degree.\n");
+ goto err_property;
+ }
+
+ /* check for buffer bound */
+ if ((pos->x + pos->w > sz->hsize) ||
+ (pos->y + pos->h > sz->vsize)) {
+ DRM_ERROR("out of buf bound.\n");
+ goto err_property;
+ }
+
+ /* check for crop */
+ if ((i == EXYNOS_DRM_OPS_SRC) && (pp->crop)) {
+ if (swap) {
+ if ((pos->h < pp->crop_min.hsize) ||
+ (sz->vsize > pp->crop_max.hsize) ||
+ (pos->w < pp->crop_min.vsize) ||
+ (sz->hsize > pp->crop_max.vsize)) {
+ DRM_ERROR("out of crop size.\n");
+ goto err_property;
+ }
+ } else {
+ if ((pos->w < pp->crop_min.hsize) ||
+ (sz->hsize > pp->crop_max.hsize) ||
+ (pos->h < pp->crop_min.vsize) ||
+ (sz->vsize > pp->crop_max.vsize)) {
+ DRM_ERROR("out of crop size.\n");
+ goto err_property;
+ }
+ }
+ }
+
+ /* check for scale */
+ if ((i == EXYNOS_DRM_OPS_DST) && (pp->scale)) {
+ if (swap) {
+ if ((pos->h < pp->scale_min.hsize) ||
+ (sz->vsize > pp->scale_max.hsize) ||
+ (pos->w < pp->scale_min.vsize) ||
+ (sz->hsize > pp->scale_max.vsize)) {
+ DRM_ERROR("out of scale size.\n");
+ goto err_property;
+ }
+ } else {
+ if ((pos->w < pp->scale_min.hsize) ||
+ (sz->hsize > pp->scale_max.hsize) ||
+ (pos->h < pp->scale_min.vsize) ||
+ (sz->vsize > pp->scale_max.vsize)) {
+ DRM_ERROR("out of scale size.\n");
+ goto err_property;
+ }
+ }
+ }
+ }
+
+ return 0;
+
+err_property:
+ for_each_ipp_ops(i) {
+ if ((i == EXYNOS_DRM_OPS_SRC) &&
+ (property->cmd == IPP_CMD_WB))
+ continue;
+
+ config = &property->config[i];
+ pos = &config->pos;
+ sz = &config->sz;
+
+ DRM_ERROR("[%s]f[%d]r[%d]pos[%d %d %d %d]sz[%d %d]\n",
+ i ? "dst" : "src", config->flip, config->degree,
+ pos->x, pos->y, pos->w, pos->h,
+ sz->hsize, sz->vsize);
+ }
+
+ return -EINVAL;
+}
+
+
+static int gsc_ippdrv_reset(struct device *dev)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct gsc_scaler *sc = &ctx->sc;
+ int ret;
+
+ /* reset h/w block */
+ ret = gsc_sw_reset(ctx);
+ if (ret < 0) {
+ dev_err(dev, "failed to reset hardware.\n");
+ return ret;
+ }
+
+ /* scaler setting */
+ memset(&ctx->sc, 0x0, sizeof(ctx->sc));
+ sc->range = true;
+
+ return 0;
+}
+
+static int gsc_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+ struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
+ struct drm_exynos_ipp_property *property;
+ struct drm_exynos_ipp_config *config;
+ struct drm_exynos_pos img_pos[EXYNOS_DRM_OPS_MAX];
+ struct drm_exynos_ipp_set_wb set_wb;
+ u32 cfg;
+ int ret, i;
+
+ DRM_DEBUG_KMS("cmd[%d]\n", cmd);
+
+ if (!c_node) {
+ DRM_ERROR("failed to get c_node.\n");
+ return -EINVAL;
+ }
+
+ property = &c_node->property;
+
+ gsc_handle_irq(ctx, true, false, true);
+
+ for_each_ipp_ops(i) {
+ config = &property->config[i];
+ img_pos[i] = config->pos;
+ }
+
+ switch (cmd) {
+ case IPP_CMD_M2M:
+ /* enable one shot */
+ cfg = gsc_read(GSC_ENABLE);
+ cfg &= ~(GSC_ENABLE_ON_CLEAR_MASK |
+ GSC_ENABLE_CLK_GATE_MODE_MASK);
+ cfg |= GSC_ENABLE_ON_CLEAR_ONESHOT;
+ gsc_write(cfg, GSC_ENABLE);
+
+ /* src dma memory */
+ cfg = gsc_read(GSC_IN_CON);
+ cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
+ cfg |= GSC_IN_PATH_MEMORY;
+ gsc_write(cfg, GSC_IN_CON);
+
+ /* dst dma memory */
+ cfg = gsc_read(GSC_OUT_CON);
+ cfg |= GSC_OUT_PATH_MEMORY;
+ gsc_write(cfg, GSC_OUT_CON);
+ break;
+ case IPP_CMD_WB:
+ set_wb.enable = 1;
+ set_wb.refresh = property->refresh_rate;
+ gsc_set_gscblk_fimd_wb(ctx, set_wb.enable);
+ exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb);
+
+ /* src local path */
+ cfg = gsc_read(GSC_IN_CON);
+ cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
+ cfg |= (GSC_IN_PATH_LOCAL | GSC_IN_LOCAL_FIMD_WB);
+ gsc_write(cfg, GSC_IN_CON);
+
+ /* dst dma memory */
+ cfg = gsc_read(GSC_OUT_CON);
+ cfg |= GSC_OUT_PATH_MEMORY;
+ gsc_write(cfg, GSC_OUT_CON);
+ break;
+ case IPP_CMD_OUTPUT:
+ /* src dma memory */
+ cfg = gsc_read(GSC_IN_CON);
+ cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
+ cfg |= GSC_IN_PATH_MEMORY;
+ gsc_write(cfg, GSC_IN_CON);
+
+ /* dst local path */
+ cfg = gsc_read(GSC_OUT_CON);
+ cfg |= GSC_OUT_PATH_MEMORY;
+ gsc_write(cfg, GSC_OUT_CON);
+ break;
+ default:
+ ret = -EINVAL;
+ dev_err(dev, "invalid operations.\n");
+ return ret;
+ }
+
+ ret = gsc_set_prescaler(ctx, &ctx->sc,
+ &img_pos[EXYNOS_DRM_OPS_SRC],
+ &img_pos[EXYNOS_DRM_OPS_DST]);
+ if (ret) {
+ dev_err(dev, "failed to set precalser.\n");
+ return ret;
+ }
+
+ gsc_set_scaler(ctx, &ctx->sc);
+
+ cfg = gsc_read(GSC_ENABLE);
+ cfg |= GSC_ENABLE_ON;
+ gsc_write(cfg, GSC_ENABLE);
+
+ return 0;
+}
+
+static void gsc_ippdrv_stop(struct device *dev, enum drm_exynos_ipp_cmd cmd)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct drm_exynos_ipp_set_wb set_wb = {0, 0};
+ u32 cfg;
+
+ DRM_DEBUG_KMS("cmd[%d]\n", cmd);
+
+ switch (cmd) {
+ case IPP_CMD_M2M:
+ /* bypass */
+ break;
+ case IPP_CMD_WB:
+ gsc_set_gscblk_fimd_wb(ctx, set_wb.enable);
+ exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb);
+ break;
+ case IPP_CMD_OUTPUT:
+ default:
+ dev_err(dev, "invalid operations.\n");
+ break;
+ }
+
+ gsc_handle_irq(ctx, false, false, true);
+
+ /* reset sequence */
+ gsc_write(0xff, GSC_OUT_BASE_ADDR_Y_MASK);
+ gsc_write(0xff, GSC_OUT_BASE_ADDR_CB_MASK);
+ gsc_write(0xff, GSC_OUT_BASE_ADDR_CR_MASK);
+
+ cfg = gsc_read(GSC_ENABLE);
+ cfg &= ~GSC_ENABLE_ON;
+ gsc_write(cfg, GSC_ENABLE);
+}
+
+static int gsc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct gsc_context *ctx;
+ struct resource *res;
+ struct exynos_drm_ippdrv *ippdrv;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ /* clock control */
+ ctx->gsc_clk = devm_clk_get(dev, "gscl");
+ if (IS_ERR(ctx->gsc_clk)) {
+ dev_err(dev, "failed to get gsc clock.\n");
+ return PTR_ERR(ctx->gsc_clk);
+ }
+
+ /* resource memory */
+ ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ ctx->regs = devm_ioremap_resource(dev, ctx->regs_res);
+ if (IS_ERR(ctx->regs))
+ return PTR_ERR(ctx->regs);
+
+ /* resource irq */
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ dev_err(dev, "failed to request irq resource.\n");
+ return -ENOENT;
+ }
+
+ ctx->irq = res->start;
+ ret = devm_request_threaded_irq(dev, ctx->irq, NULL, gsc_irq_handler,
+ IRQF_ONESHOT, "drm_gsc", ctx);
+ if (ret < 0) {
+ dev_err(dev, "failed to request irq.\n");
+ return ret;
+ }
+
+ /* context initailization */
+ ctx->id = pdev->id;
+
+ ippdrv = &ctx->ippdrv;
+ ippdrv->dev = dev;
+ ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &gsc_src_ops;
+ ippdrv->ops[EXYNOS_DRM_OPS_DST] = &gsc_dst_ops;
+ ippdrv->check_property = gsc_ippdrv_check_property;
+ ippdrv->reset = gsc_ippdrv_reset;
+ ippdrv->start = gsc_ippdrv_start;
+ ippdrv->stop = gsc_ippdrv_stop;
+ ret = gsc_init_prop_list(ippdrv);
+ if (ret < 0) {
+ dev_err(dev, "failed to init property list.\n");
+ return ret;
+ }
+
+ DRM_DEBUG_KMS("id[%d]ippdrv[0x%x]\n", ctx->id, (int)ippdrv);
+
+ mutex_init(&ctx->lock);
+ platform_set_drvdata(pdev, ctx);
+
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+
+ ret = exynos_drm_ippdrv_register(ippdrv);
+ if (ret < 0) {
+ dev_err(dev, "failed to register drm gsc device.\n");
+ goto err_ippdrv_register;
+ }
+
+ dev_info(dev, "drm gsc registered successfully.\n");
+
+ return 0;
+
+err_ippdrv_register:
+ pm_runtime_disable(dev);
+ return ret;
+}
+
+static int gsc_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct gsc_context *ctx = get_gsc_context(dev);
+ struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
+
+ exynos_drm_ippdrv_unregister(ippdrv);
+ mutex_destroy(&ctx->lock);
+
+ pm_runtime_set_suspended(dev);
+ pm_runtime_disable(dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int gsc_suspend(struct device *dev)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+
+ DRM_DEBUG_KMS("id[%d]\n", ctx->id);
+
+ if (pm_runtime_suspended(dev))
+ return 0;
+
+ return gsc_clk_ctrl(ctx, false);
+}
+
+static int gsc_resume(struct device *dev)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+
+ DRM_DEBUG_KMS("id[%d]\n", ctx->id);
+
+ if (!pm_runtime_suspended(dev))
+ return gsc_clk_ctrl(ctx, true);
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_PM
+static int gsc_runtime_suspend(struct device *dev)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+
+ DRM_DEBUG_KMS("id[%d]\n", ctx->id);
+
+ return gsc_clk_ctrl(ctx, false);
+}
+
+static int gsc_runtime_resume(struct device *dev)
+{
+ struct gsc_context *ctx = get_gsc_context(dev);
+
+ DRM_DEBUG_KMS("id[%d]\n", ctx->id);
+
+ return gsc_clk_ctrl(ctx, true);
+}
+#endif
+
+static const struct dev_pm_ops gsc_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(gsc_suspend, gsc_resume)
+ SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL)
+};
+
+struct platform_driver gsc_driver = {
+ .probe = gsc_probe,
+ .remove = gsc_remove,
+ .driver = {
+ .name = "exynos-drm-gsc",
+ .owner = THIS_MODULE,
+ .pm = &gsc_pm_ops,
+ },
+};
+
Code Review / kvmfornfv.git / blobdiff