--- /dev/null
+/* drivers/gpu/drm/exynos5433_drm_decon.c
+ *
+ * Copyright (C) 2015 Samsung Electronics Co.Ltd
+ * Authors:
+ * Joonyoung Shim <jy0922.shim@samsung.com>
+ * Hyungwon Hwang <human.hwang@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 Foundationr
+ */
+
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/pm_runtime.h>
+
+#include <video/exynos5433_decon.h>
+
+#include "exynos_drm_drv.h"
+#include "exynos_drm_crtc.h"
+#include "exynos_drm_plane.h"
+#include "exynos_drm_iommu.h"
+
+#define WINDOWS_NR 3
+#define CURSOR_WIN 2
+#define MIN_FB_WIDTH_FOR_16WORD_BURST 128
+
+static const char * const decon_clks_name[] = {
+ "pclk",
+ "aclk_decon",
+ "aclk_smmu_decon0x",
+ "aclk_xiu_decon0x",
+ "pclk_smmu_decon0x",
+ "sclk_decon_vclk",
+ "sclk_decon_eclk",
+};
+
+enum decon_iftype {
+ IFTYPE_RGB,
+ IFTYPE_I80,
+ IFTYPE_HDMI
+};
+
+enum decon_flag_bits {
+ BIT_CLKS_ENABLED,
+ BIT_IRQS_ENABLED,
+ BIT_WIN_UPDATED,
+ BIT_SUSPENDED
+};
+
+struct decon_context {
+ struct device *dev;
+ struct drm_device *drm_dev;
+ struct exynos_drm_crtc *crtc;
+ struct exynos_drm_plane planes[WINDOWS_NR];
+ void __iomem *addr;
+ struct clk *clks[ARRAY_SIZE(decon_clks_name)];
+ int pipe;
+ unsigned long flags;
+ enum decon_iftype out_type;
+ int first_win;
+};
+
+static const uint32_t decon_formats[] = {
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_ARGB8888,
+};
+
+static inline void decon_set_bits(struct decon_context *ctx, u32 reg, u32 mask,
+ u32 val)
+{
+ val = (val & mask) | (readl(ctx->addr + reg) & ~mask);
+ writel(val, ctx->addr + reg);
+}
+
+static int decon_enable_vblank(struct exynos_drm_crtc *crtc)
+{
+ struct decon_context *ctx = crtc->ctx;
+ u32 val;
+
+ if (test_bit(BIT_SUSPENDED, &ctx->flags))
+ return -EPERM;
+
+ if (test_and_set_bit(BIT_IRQS_ENABLED, &ctx->flags)) {
+ val = VIDINTCON0_INTEN;
+ if (ctx->out_type == IFTYPE_I80)
+ val |= VIDINTCON0_FRAMEDONE;
+ else
+ val |= VIDINTCON0_INTFRMEN;
+
+ writel(val, ctx->addr + DECON_VIDINTCON0);
+ }
+
+ return 0;
+}
+
+static void decon_disable_vblank(struct exynos_drm_crtc *crtc)
+{
+ struct decon_context *ctx = crtc->ctx;
+
+ if (test_bit(BIT_SUSPENDED, &ctx->flags))
+ return;
+
+ if (test_and_clear_bit(BIT_IRQS_ENABLED, &ctx->flags))
+ writel(0, ctx->addr + DECON_VIDINTCON0);
+}
+
+static void decon_setup_trigger(struct decon_context *ctx)
+{
+ u32 val = (ctx->out_type != IFTYPE_HDMI)
+ ? TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
+ TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN
+ : TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
+ TRIGCON_HWTRIGMASK_I80_RGB | TRIGCON_HWTRIGEN_I80_RGB;
+ writel(val, ctx->addr + DECON_TRIGCON);
+}
+
+static void decon_commit(struct exynos_drm_crtc *crtc)
+{
+ struct decon_context *ctx = crtc->ctx;
+ struct drm_display_mode *m = &crtc->base.mode;
+ u32 val;
+
+ if (test_bit(BIT_SUSPENDED, &ctx->flags))
+ return;
+
+ if (ctx->out_type == IFTYPE_HDMI) {
+ m->crtc_hsync_start = m->crtc_hdisplay + 10;
+ m->crtc_hsync_end = m->crtc_htotal - 92;
+ m->crtc_vsync_start = m->crtc_vdisplay + 1;
+ m->crtc_vsync_end = m->crtc_vsync_start + 1;
+ }
+
+ decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID, 0);
+
+ /* enable clock gate */
+ val = CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F;
+ writel(val, ctx->addr + DECON_CMU);
+
+ /* lcd on and use command if */
+ val = VIDOUT_LCD_ON;
+ if (ctx->out_type == IFTYPE_I80)
+ val |= VIDOUT_COMMAND_IF;
+ else
+ val |= VIDOUT_RGB_IF;
+ writel(val, ctx->addr + DECON_VIDOUTCON0);
+
+ val = VIDTCON2_LINEVAL(m->vdisplay - 1) |
+ VIDTCON2_HOZVAL(m->hdisplay - 1);
+ writel(val, ctx->addr + DECON_VIDTCON2);
+
+ if (ctx->out_type != IFTYPE_I80) {
+ val = VIDTCON00_VBPD_F(
+ m->crtc_vtotal - m->crtc_vsync_end - 1) |
+ VIDTCON00_VFPD_F(
+ m->crtc_vsync_start - m->crtc_vdisplay - 1);
+ writel(val, ctx->addr + DECON_VIDTCON00);
+
+ val = VIDTCON01_VSPW_F(
+ m->crtc_vsync_end - m->crtc_vsync_start - 1);
+ writel(val, ctx->addr + DECON_VIDTCON01);
+
+ val = VIDTCON10_HBPD_F(
+ m->crtc_htotal - m->crtc_hsync_end - 1) |
+ VIDTCON10_HFPD_F(
+ m->crtc_hsync_start - m->crtc_hdisplay - 1);
+ writel(val, ctx->addr + DECON_VIDTCON10);
+
+ val = VIDTCON11_HSPW_F(
+ m->crtc_hsync_end - m->crtc_hsync_start - 1);
+ writel(val, ctx->addr + DECON_VIDTCON11);
+ }
+
+ decon_setup_trigger(ctx);
+
+ /* enable output and display signal */
+ decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID | VIDCON0_ENVID_F, ~0);
+}
+
+static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win,
+ struct drm_framebuffer *fb)
+{
+ unsigned long val;
+
+ val = readl(ctx->addr + DECON_WINCONx(win));
+ val &= ~WINCONx_BPPMODE_MASK;
+
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_XRGB1555:
+ val |= WINCONx_BPPMODE_16BPP_I1555;
+ val |= WINCONx_HAWSWP_F;
+ val |= WINCONx_BURSTLEN_16WORD;
+ break;
+ case DRM_FORMAT_RGB565:
+ val |= WINCONx_BPPMODE_16BPP_565;
+ val |= WINCONx_HAWSWP_F;
+ val |= WINCONx_BURSTLEN_16WORD;
+ break;
+ case DRM_FORMAT_XRGB8888:
+ val |= WINCONx_BPPMODE_24BPP_888;
+ val |= WINCONx_WSWP_F;
+ val |= WINCONx_BURSTLEN_16WORD;
+ break;
+ case DRM_FORMAT_ARGB8888:
+ val |= WINCONx_BPPMODE_32BPP_A8888;
+ val |= WINCONx_WSWP_F | WINCONx_BLD_PIX_F | WINCONx_ALPHA_SEL_F;
+ val |= WINCONx_BURSTLEN_16WORD;
+ break;
+ default:
+ DRM_ERROR("Proper pixel format is not set\n");
+ return;
+ }
+
+ DRM_DEBUG_KMS("bpp = %u\n", fb->bits_per_pixel);
+
+ /*
+ * In case of exynos, setting dma-burst to 16Word causes permanent
+ * tearing for very small buffers, e.g. cursor buffer. Burst Mode
+ * switching which is based on plane size is not recommended as
+ * plane size varies a lot towards the end of the screen and rapid
+ * movement causes unstable DMA which results into iommu crash/tear.
+ */
+
+ if (fb->width < MIN_FB_WIDTH_FOR_16WORD_BURST) {
+ val &= ~WINCONx_BURSTLEN_MASK;
+ val |= WINCONx_BURSTLEN_8WORD;
+ }
+
+ writel(val, ctx->addr + DECON_WINCONx(win));
+}
+
+static void decon_shadow_protect_win(struct decon_context *ctx, int win,
+ bool protect)
+{
+ decon_set_bits(ctx, DECON_SHADOWCON, SHADOWCON_Wx_PROTECT(win),
+ protect ? ~0 : 0);
+}
+
+static void decon_atomic_begin(struct exynos_drm_crtc *crtc,
+ struct exynos_drm_plane *plane)
+{
+ struct decon_context *ctx = crtc->ctx;
+
+ if (test_bit(BIT_SUSPENDED, &ctx->flags))
+ return;
+
+ decon_shadow_protect_win(ctx, plane->zpos, true);
+}
+
+#define BIT_VAL(x, e, s) (((x) & ((1 << ((e) - (s) + 1)) - 1)) << (s))
+#define COORDINATE_X(x) BIT_VAL((x), 23, 12)
+#define COORDINATE_Y(x) BIT_VAL((x), 11, 0)
+
+static void decon_update_plane(struct exynos_drm_crtc *crtc,
+ struct exynos_drm_plane *plane)
+{
+ struct decon_context *ctx = crtc->ctx;
+ struct drm_plane_state *state = plane->base.state;
+ unsigned int win = plane->zpos;
+ unsigned int bpp = state->fb->bits_per_pixel >> 3;
+ unsigned int pitch = state->fb->pitches[0];
+ u32 val;
+
+ if (test_bit(BIT_SUSPENDED, &ctx->flags))
+ return;
+
+ val = COORDINATE_X(plane->crtc_x) | COORDINATE_Y(plane->crtc_y);
+ writel(val, ctx->addr + DECON_VIDOSDxA(win));
+
+ val = COORDINATE_X(plane->crtc_x + plane->crtc_w - 1) |
+ COORDINATE_Y(plane->crtc_y + plane->crtc_h - 1);
+ writel(val, ctx->addr + DECON_VIDOSDxB(win));
+
+ val = VIDOSD_Wx_ALPHA_R_F(0x0) | VIDOSD_Wx_ALPHA_G_F(0x0) |
+ VIDOSD_Wx_ALPHA_B_F(0x0);
+ writel(val, ctx->addr + DECON_VIDOSDxC(win));
+
+ val = VIDOSD_Wx_ALPHA_R_F(0x0) | VIDOSD_Wx_ALPHA_G_F(0x0) |
+ VIDOSD_Wx_ALPHA_B_F(0x0);
+ writel(val, ctx->addr + DECON_VIDOSDxD(win));
+
+ writel(plane->dma_addr[0], ctx->addr + DECON_VIDW0xADD0B0(win));
+
+ val = plane->dma_addr[0] + pitch * plane->crtc_h;
+ writel(val, ctx->addr + DECON_VIDW0xADD1B0(win));
+
+ if (ctx->out_type != IFTYPE_HDMI)
+ val = BIT_VAL(pitch - plane->crtc_w * bpp, 27, 14)
+ | BIT_VAL(plane->crtc_w * bpp, 13, 0);
+ else
+ val = BIT_VAL(pitch - plane->crtc_w * bpp, 29, 15)
+ | BIT_VAL(plane->crtc_w * bpp, 14, 0);
+ writel(val, ctx->addr + DECON_VIDW0xADD2(win));
+
+ decon_win_set_pixfmt(ctx, win, state->fb);
+
+ /* window enable */
+ decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, ~0);
+
+ /* standalone update */
+ decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
+}
+
+static void decon_disable_plane(struct exynos_drm_crtc *crtc,
+ struct exynos_drm_plane *plane)
+{
+ struct decon_context *ctx = crtc->ctx;
+ unsigned int win = plane->zpos;
+
+ if (test_bit(BIT_SUSPENDED, &ctx->flags))
+ return;
+
+ decon_shadow_protect_win(ctx, win, true);
+
+ /* window disable */
+ decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
+
+ decon_shadow_protect_win(ctx, win, false);
+
+ /* standalone update */
+ decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
+}
+
+static void decon_atomic_flush(struct exynos_drm_crtc *crtc,
+ struct exynos_drm_plane *plane)
+{
+ struct decon_context *ctx = crtc->ctx;
+
+ if (test_bit(BIT_SUSPENDED, &ctx->flags))
+ return;
+
+ decon_shadow_protect_win(ctx, plane->zpos, false);
+
+ if (ctx->out_type == IFTYPE_I80)
+ set_bit(BIT_WIN_UPDATED, &ctx->flags);
+}
+
+static void decon_swreset(struct decon_context *ctx)
+{
+ unsigned int tries;
+
+ writel(0, ctx->addr + DECON_VIDCON0);
+ for (tries = 2000; tries; --tries) {
+ if (~readl(ctx->addr + DECON_VIDCON0) & VIDCON0_STOP_STATUS)
+ break;
+ udelay(10);
+ }
+
+ WARN(tries == 0, "failed to disable DECON\n");
+
+ writel(VIDCON0_SWRESET, ctx->addr + DECON_VIDCON0);
+ for (tries = 2000; tries; --tries) {
+ if (~readl(ctx->addr + DECON_VIDCON0) & VIDCON0_SWRESET)
+ break;
+ udelay(10);
+ }
+
+ WARN(tries == 0, "failed to software reset DECON\n");
+
+ if (ctx->out_type != IFTYPE_HDMI)
+ return;
+
+ writel(VIDCON0_CLKVALUP | VIDCON0_VLCKFREE, ctx->addr + DECON_VIDCON0);
+ decon_set_bits(ctx, DECON_CMU,
+ CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F, ~0);
+ writel(VIDCON1_VCLK_RUN_VDEN_DISABLE, ctx->addr + DECON_VIDCON1);
+ writel(CRCCTRL_CRCEN | CRCCTRL_CRCSTART_F | CRCCTRL_CRCCLKEN,
+ ctx->addr + DECON_CRCCTRL);
+ decon_setup_trigger(ctx);
+}
+
+static void decon_enable(struct exynos_drm_crtc *crtc)
+{
+ struct decon_context *ctx = crtc->ctx;
+ int ret;
+ int i;
+
+ if (!test_and_clear_bit(BIT_SUSPENDED, &ctx->flags))
+ return;
+
+ pm_runtime_get_sync(ctx->dev);
+
+ for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
+ ret = clk_prepare_enable(ctx->clks[i]);
+ if (ret < 0)
+ goto err;
+ }
+
+ set_bit(BIT_CLKS_ENABLED, &ctx->flags);
+
+ /* if vblank was enabled status, enable it again. */
+ if (test_and_clear_bit(BIT_IRQS_ENABLED, &ctx->flags))
+ decon_enable_vblank(ctx->crtc);
+
+ decon_commit(ctx->crtc);
+
+ return;
+err:
+ while (--i >= 0)
+ clk_disable_unprepare(ctx->clks[i]);
+
+ set_bit(BIT_SUSPENDED, &ctx->flags);
+}
+
+static void decon_disable(struct exynos_drm_crtc *crtc)
+{
+ struct decon_context *ctx = crtc->ctx;
+ int i;
+
+ if (test_bit(BIT_SUSPENDED, &ctx->flags))
+ return;
+
+ /*
+ * We need to make sure that all windows are disabled before we
+ * suspend that connector. Otherwise we might try to scan from
+ * a destroyed buffer later.
+ */
+ for (i = ctx->first_win; i < WINDOWS_NR; i++)
+ decon_disable_plane(crtc, &ctx->planes[i]);
+
+ decon_swreset(ctx);
+
+ for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++)
+ clk_disable_unprepare(ctx->clks[i]);
+
+ clear_bit(BIT_CLKS_ENABLED, &ctx->flags);
+
+ pm_runtime_put_sync(ctx->dev);
+
+ set_bit(BIT_SUSPENDED, &ctx->flags);
+}
+
+void decon_te_irq_handler(struct exynos_drm_crtc *crtc)
+{
+ struct decon_context *ctx = crtc->ctx;
+
+ if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags))
+ return;
+
+ if (test_and_clear_bit(BIT_WIN_UPDATED, &ctx->flags))
+ decon_set_bits(ctx, DECON_TRIGCON, TRIGCON_SWTRIGCMD, ~0);
+
+ drm_crtc_handle_vblank(&ctx->crtc->base);
+}
+
+static void decon_clear_channels(struct exynos_drm_crtc *crtc)
+{
+ struct decon_context *ctx = crtc->ctx;
+ int win, i, ret;
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
+ ret = clk_prepare_enable(ctx->clks[i]);
+ if (ret < 0)
+ goto err;
+ }
+
+ for (win = 0; win < WINDOWS_NR; win++) {
+ decon_shadow_protect_win(ctx, win, true);
+ decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
+ decon_shadow_protect_win(ctx, win, false);
+ decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
+ }
+ /* TODO: wait for possible vsync */
+ msleep(50);
+
+err:
+ while (--i >= 0)
+ clk_disable_unprepare(ctx->clks[i]);
+}
+
+static struct exynos_drm_crtc_ops decon_crtc_ops = {
+ .enable = decon_enable,
+ .disable = decon_disable,
+ .commit = decon_commit,
+ .enable_vblank = decon_enable_vblank,
+ .disable_vblank = decon_disable_vblank,
+ .atomic_begin = decon_atomic_begin,
+ .update_plane = decon_update_plane,
+ .disable_plane = decon_disable_plane,
+ .atomic_flush = decon_atomic_flush,
+ .te_handler = decon_te_irq_handler,
+};
+
+static int decon_bind(struct device *dev, struct device *master, void *data)
+{
+ struct decon_context *ctx = dev_get_drvdata(dev);
+ struct drm_device *drm_dev = data;
+ struct exynos_drm_private *priv = drm_dev->dev_private;
+ struct exynos_drm_plane *exynos_plane;
+ enum exynos_drm_output_type out_type;
+ enum drm_plane_type type;
+ unsigned int win;
+ int ret;
+
+ ctx->drm_dev = drm_dev;
+ ctx->pipe = priv->pipe++;
+
+ for (win = ctx->first_win; win < WINDOWS_NR; win++) {
+ int tmp = (win == ctx->first_win) ? 0 : win;
+
+ type = exynos_plane_get_type(tmp, CURSOR_WIN);
+ ret = exynos_plane_init(drm_dev, &ctx->planes[win],
+ 1 << ctx->pipe, type, decon_formats,
+ ARRAY_SIZE(decon_formats), win);
+ if (ret)
+ return ret;
+ }
+
+ exynos_plane = &ctx->planes[ctx->first_win];
+ out_type = (ctx->out_type == IFTYPE_HDMI) ? EXYNOS_DISPLAY_TYPE_HDMI
+ : EXYNOS_DISPLAY_TYPE_LCD;
+ ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
+ ctx->pipe, out_type,
+ &decon_crtc_ops, ctx);
+ if (IS_ERR(ctx->crtc)) {
+ ret = PTR_ERR(ctx->crtc);
+ goto err;
+ }
+
+ decon_clear_channels(ctx->crtc);
+
+ ret = drm_iommu_attach_device(drm_dev, dev);
+ if (ret)
+ goto err;
+
+ return ret;
+err:
+ priv->pipe--;
+ return ret;
+}
+
+static void decon_unbind(struct device *dev, struct device *master, void *data)
+{
+ struct decon_context *ctx = dev_get_drvdata(dev);
+
+ decon_disable(ctx->crtc);
+
+ /* detach this sub driver from iommu mapping if supported. */
+ drm_iommu_detach_device(ctx->drm_dev, ctx->dev);
+}
+
+static const struct component_ops decon_component_ops = {
+ .bind = decon_bind,
+ .unbind = decon_unbind,
+};
+
+static irqreturn_t decon_irq_handler(int irq, void *dev_id)
+{
+ struct decon_context *ctx = dev_id;
+ u32 val;
+ int win;
+
+ if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags))
+ goto out;
+
+ val = readl(ctx->addr + DECON_VIDINTCON1);
+ val &= VIDINTCON1_INTFRMDONEPEND | VIDINTCON1_INTFRMPEND;
+
+ if (val) {
+ for (win = ctx->first_win; win < WINDOWS_NR ; win++) {
+ struct exynos_drm_plane *plane = &ctx->planes[win];
+
+ if (!plane->pending_fb)
+ continue;
+
+ exynos_drm_crtc_finish_update(ctx->crtc, plane);
+ }
+
+ /* clear */
+ writel(val, ctx->addr + DECON_VIDINTCON1);
+ }
+
+out:
+ return IRQ_HANDLED;
+}
+
+static const struct of_device_id exynos5433_decon_driver_dt_match[] = {
+ {
+ .compatible = "samsung,exynos5433-decon",
+ .data = (void *)IFTYPE_RGB
+ },
+ {
+ .compatible = "samsung,exynos5433-decon-tv",
+ .data = (void *)IFTYPE_HDMI
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos5433_decon_driver_dt_match);
+
+static int exynos5433_decon_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *of_id;
+ struct device *dev = &pdev->dev;
+ struct decon_context *ctx;
+ struct resource *res;
+ int ret;
+ int i;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ __set_bit(BIT_SUSPENDED, &ctx->flags);
+ ctx->dev = dev;
+
+ of_id = of_match_device(exynos5433_decon_driver_dt_match, &pdev->dev);
+ ctx->out_type = (enum decon_iftype)of_id->data;
+
+ if (ctx->out_type == IFTYPE_HDMI)
+ ctx->first_win = 1;
+ else if (of_get_child_by_name(dev->of_node, "i80-if-timings"))
+ ctx->out_type = IFTYPE_I80;
+
+ for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
+ struct clk *clk;
+
+ clk = devm_clk_get(ctx->dev, decon_clks_name[i]);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ ctx->clks[i] = clk;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(dev, "cannot find IO resource\n");
+ return -ENXIO;
+ }
+
+ ctx->addr = devm_ioremap_resource(dev, res);
+ if (IS_ERR(ctx->addr)) {
+ dev_err(dev, "ioremap failed\n");
+ return PTR_ERR(ctx->addr);
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
+ (ctx->out_type == IFTYPE_I80) ? "lcd_sys" : "vsync");
+ if (!res) {
+ dev_err(dev, "cannot find IRQ resource\n");
+ return -ENXIO;
+ }
+
+ ret = devm_request_irq(dev, res->start, decon_irq_handler, 0,
+ "drm_decon", ctx);
+ if (ret < 0) {
+ dev_err(dev, "lcd_sys irq request failed\n");
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, ctx);
+
+ pm_runtime_enable(dev);
+
+ ret = component_add(dev, &decon_component_ops);
+ if (ret)
+ goto err_disable_pm_runtime;
+
+ return 0;
+
+err_disable_pm_runtime:
+ pm_runtime_disable(dev);
+
+ return ret;
+}
+
+static int exynos5433_decon_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+
+ component_del(&pdev->dev, &decon_component_ops);
+
+ return 0;
+}
+
+struct platform_driver exynos5433_decon_driver = {
+ .probe = exynos5433_decon_probe,
+ .remove = exynos5433_decon_remove,
+ .driver = {
+ .name = "exynos5433-decon",
+ .of_match_table = exynos5433_decon_driver_dt_match,
+ },
+};
Code Review / kvmfornfv.git / blobdiff