#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
+#include <linux/pm_runtime.h>
#include <drm/exynos_drm.h>
#include <plat/regs-fb-v4.h>
void __iomem *vaddr;
unsigned int buf_offsize;
unsigned int line_size; /* bytes */
+ bool enabled;
};
struct fimd_context {
unsigned long irq_flags;
u32 vidcon0;
u32 vidcon1;
+ bool suspended;
+ struct mutex lock;
struct fb_videomode *timing;
};
{
DRM_DEBUG_KMS("%s\n", __FILE__);
- /* TODO. */
+ /* TODO */
return 0;
}
.power_on = fimd_display_power_on,
};
+static void fimd_dpms(struct device *subdrv_dev, int mode)
+{
+ struct fimd_context *ctx = get_fimd_context(subdrv_dev);
+
+ DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode);
+
+ mutex_lock(&ctx->lock);
+
+ switch (mode) {
+ case DRM_MODE_DPMS_ON:
+ /*
+ * enable fimd hardware only if suspended status.
+ *
+ * P.S. fimd_dpms function would be called at booting time so
+ * clk_enable could be called double time.
+ */
+ if (ctx->suspended)
+ pm_runtime_get_sync(subdrv_dev);
+ break;
+ case DRM_MODE_DPMS_STANDBY:
+ case DRM_MODE_DPMS_SUSPEND:
+ case DRM_MODE_DPMS_OFF:
+ if (!ctx->suspended)
+ pm_runtime_put_sync(subdrv_dev);
+ break;
+ default:
+ DRM_DEBUG_KMS("unspecified mode %d\n", mode);
+ break;
+ }
+
+ mutex_unlock(&ctx->lock);
+}
+
+static void fimd_apply(struct device *subdrv_dev)
+{
+ struct fimd_context *ctx = get_fimd_context(subdrv_dev);
+ struct exynos_drm_manager *mgr = &ctx->subdrv.manager;
+ struct exynos_drm_manager_ops *mgr_ops = mgr->ops;
+ struct exynos_drm_overlay_ops *ovl_ops = mgr->overlay_ops;
+ struct fimd_win_data *win_data;
+ int i;
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ for (i = 0; i < WINDOWS_NR; i++) {
+ win_data = &ctx->win_data[i];
+ if (win_data->enabled && (ovl_ops && ovl_ops->commit))
+ ovl_ops->commit(subdrv_dev, i);
+ }
+
+ if (mgr_ops && mgr_ops->commit)
+ mgr_ops->commit(subdrv_dev);
+}
+
static void fimd_commit(struct device *dev)
{
struct fimd_context *ctx = get_fimd_context(dev);
struct fb_videomode *timing = ctx->timing;
u32 val;
+ if (ctx->suspended)
+ return;
+
DRM_DEBUG_KMS("%s\n", __FILE__);
/* setup polarity values from machine code. */
writel(val, ctx->regs + VIDCON0);
}
-static void fimd_disable(struct device *dev)
-{
- struct fimd_context *ctx = get_fimd_context(dev);
- struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
- struct drm_device *drm_dev = subdrv->drm_dev;
- struct exynos_drm_manager *manager = &subdrv->manager;
- u32 val;
-
- DRM_DEBUG_KMS("%s\n", __FILE__);
-
- /* fimd dma off */
- val = readl(ctx->regs + VIDCON0);
- val &= ~(VIDCON0_ENVID | VIDCON0_ENVID_F);
- writel(val, ctx->regs + VIDCON0);
-
- /*
- * if vblank is enabled status with dma off then
- * it disables vsync interrupt.
- */
- if (drm_dev->vblank_enabled[manager->pipe] &&
- atomic_read(&drm_dev->vblank_refcount[manager->pipe])) {
- drm_vblank_put(drm_dev, manager->pipe);
-
- /*
- * if vblank_disable_allowed is 0 then disable
- * vsync interrupt right now else the vsync interrupt
- * would be disabled by drm timer once a current process
- * gives up ownershop of vblank event.
- */
- if (!drm_dev->vblank_disable_allowed)
- drm_vblank_off(drm_dev, manager->pipe);
- }
-}
-
static int fimd_enable_vblank(struct device *dev)
{
struct fimd_context *ctx = get_fimd_context(dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
+ if (ctx->suspended)
+ return -EPERM;
+
if (!test_and_set_bit(0, &ctx->irq_flags)) {
val = readl(ctx->regs + VIDINTCON0);
DRM_DEBUG_KMS("%s\n", __FILE__);
+ if (ctx->suspended)
+ return;
+
if (test_and_clear_bit(0, &ctx->irq_flags)) {
val = readl(ctx->regs + VIDINTCON0);
}
static struct exynos_drm_manager_ops fimd_manager_ops = {
+ .dpms = fimd_dpms,
+ .apply = fimd_apply,
.commit = fimd_commit,
- .disable = fimd_disable,
.enable_vblank = fimd_enable_vblank,
.disable_vblank = fimd_disable_vblank,
};
{
struct fimd_context *ctx = get_fimd_context(dev);
struct fimd_win_data *win_data;
+ int win;
unsigned long offset;
DRM_DEBUG_KMS("%s\n", __FILE__);
return;
}
+ win = overlay->zpos;
+ if (win == DEFAULT_ZPOS)
+ win = ctx->default_win;
+
+ if (win < 0 || win > WINDOWS_NR)
+ return;
+
offset = overlay->fb_x * (overlay->bpp >> 3);
offset += overlay->fb_y * overlay->pitch;
DRM_DEBUG_KMS("offset = 0x%lx, pitch = %x\n", offset, overlay->pitch);
- win_data = &ctx->win_data[ctx->default_win];
+ win_data = &ctx->win_data[win];
win_data->offset_x = overlay->crtc_x;
win_data->offset_y = overlay->crtc_y;
win_data->ovl_height = overlay->crtc_height;
win_data->fb_width = overlay->fb_width;
win_data->fb_height = overlay->fb_height;
- win_data->dma_addr = overlay->dma_addr + offset;
- win_data->vaddr = overlay->vaddr + offset;
+ win_data->dma_addr = overlay->dma_addr[0] + offset;
+ win_data->vaddr = overlay->vaddr[0] + offset;
win_data->bpp = overlay->bpp;
win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) *
(overlay->bpp >> 3);
writel(keycon1, ctx->regs + WKEYCON1_BASE(win));
}
-static void fimd_win_commit(struct device *dev)
+static void fimd_win_commit(struct device *dev, int zpos)
{
struct fimd_context *ctx = get_fimd_context(dev);
struct fimd_win_data *win_data;
- int win = ctx->default_win;
+ int win = zpos;
unsigned long val, alpha, size;
DRM_DEBUG_KMS("%s\n", __FILE__);
+ if (ctx->suspended)
+ return;
+
+ if (win == DEFAULT_ZPOS)
+ win = ctx->default_win;
+
if (win < 0 || win > WINDOWS_NR)
return;
if (win != 0)
fimd_win_set_colkey(dev, win);
+ /* wincon */
+ val = readl(ctx->regs + WINCON(win));
+ val |= WINCONx_ENWIN;
+ writel(val, ctx->regs + WINCON(win));
+
/* Enable DMA channel and unprotect windows */
val = readl(ctx->regs + SHADOWCON);
val |= SHADOWCON_CHx_ENABLE(win);
val &= ~SHADOWCON_WINx_PROTECT(win);
writel(val, ctx->regs + SHADOWCON);
+
+ win_data->enabled = true;
}
-static void fimd_win_disable(struct device *dev)
+static void fimd_win_disable(struct device *dev, int zpos)
{
struct fimd_context *ctx = get_fimd_context(dev);
- int win = ctx->default_win;
+ struct fimd_win_data *win_data;
+ int win = zpos;
u32 val;
DRM_DEBUG_KMS("%s\n", __FILE__);
+ if (win == DEFAULT_ZPOS)
+ win = ctx->default_win;
+
if (win < 0 || win > WINDOWS_NR)
return;
+ win_data = &ctx->win_data[win];
+
/* protect windows */
val = readl(ctx->regs + SHADOWCON);
val |= SHADOWCON_WINx_PROTECT(win);
val &= ~SHADOWCON_CHx_ENABLE(win);
val &= ~SHADOWCON_WINx_PROTECT(win);
writel(val, ctx->regs + SHADOWCON);
+
+ win_data->enabled = false;
}
static struct exynos_drm_overlay_ops fimd_overlay_ops = {
wake_up_interruptible(&e->base.file_priv->event_wait);
}
- if (is_checked)
+ if (is_checked) {
drm_vblank_put(drm_dev, crtc);
+ /*
+ * don't off vblank if vblank_disable_allowed is 1,
+ * because vblank would be off by timer handler.
+ */
+ if (!drm_dev->vblank_disable_allowed)
+ drm_vblank_off(drm_dev, crtc);
+ }
+
spin_unlock_irqrestore(&drm_dev->event_lock, flags);
}
/* VSYNC interrupt */
writel(VIDINTCON1_INT_FRAME, ctx->regs + VIDINTCON1);
- /*
- * in case that vblank_disable_allowed is 1, it could induce
- * the problem that manager->pipe could be -1 because with
- * disable callback, vsync interrupt isn't disabled and at this moment,
- * vsync interrupt could occur. the vsync interrupt would be disabled
- * by timer handler later.
- */
- if (manager->pipe == -1)
- return IRQ_HANDLED;
+ /* check the crtc is detached already from encoder */
+ if (manager->pipe < 0)
+ goto out;
drm_handle_vblank(drm_dev, manager->pipe);
fimd_finish_pageflip(drm_dev, manager->pipe);
+out:
return IRQ_HANDLED;
}
*/
drm_dev->irq_enabled = 1;
+ /*
+ * with vblank_disable_allowed = 1, vblank interrupt will be disabled
+ * by drm timer once a current process gives up ownership of
+ * vblank event.(after drm_vblank_put function is called)
+ */
+ drm_dev->vblank_disable_allowed = 1;
+
return 0;
}
writel(val, ctx->regs + SHADOWCON);
}
+static int fimd_power_on(struct fimd_context *ctx, bool enable)
+{
+ struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
+ struct device *dev = subdrv->manager.dev;
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (enable != false && enable != true)
+ return -EINVAL;
+
+ if (enable) {
+ int ret;
+
+ ret = clk_enable(ctx->bus_clk);
+ if (ret < 0)
+ return ret;
+
+ ret = clk_enable(ctx->lcd_clk);
+ if (ret < 0) {
+ clk_disable(ctx->bus_clk);
+ return ret;
+ }
+
+ ctx->suspended = false;
+
+ /* if vblank was enabled status, enable it again. */
+ if (test_and_clear_bit(0, &ctx->irq_flags))
+ fimd_enable_vblank(dev);
+
+ fimd_apply(dev);
+ } else {
+ clk_disable(ctx->lcd_clk);
+ clk_disable(ctx->bus_clk);
+
+ ctx->suspended = true;
+ }
+
+ return 0;
+}
+
static int __devinit fimd_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
ctx->irq = res->start;
- for (win = 0; win < WINDOWS_NR; win++)
- fimd_clear_win(ctx, win);
-
ret = request_irq(ctx->irq, fimd_irq_handler, 0, "drm_fimd", ctx);
if (ret < 0) {
dev_err(dev, "irq request failed.\n");
subdrv->manager.display_ops = &fimd_display_ops;
subdrv->manager.dev = dev;
+ mutex_init(&ctx->lock);
+
platform_set_drvdata(pdev, ctx);
+
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_get_sync(dev);
+
+ for (win = 0; win < WINDOWS_NR; win++)
+ fimd_clear_win(ctx, win);
+
exynos_drm_subdrv_register(subdrv);
return 0;
static int __devexit fimd_remove(struct platform_device *pdev)
{
+ struct device *dev = &pdev->dev;
struct fimd_context *ctx = platform_get_drvdata(pdev);
DRM_DEBUG_KMS("%s\n", __FILE__);
exynos_drm_subdrv_unregister(&ctx->subdrv);
+ if (ctx->suspended)
+ goto out;
+
clk_disable(ctx->lcd_clk);
clk_disable(ctx->bus_clk);
+
+ pm_runtime_set_suspended(dev);
+ pm_runtime_put_sync(dev);
+
+out:
+ pm_runtime_disable(dev);
+
clk_put(ctx->lcd_clk);
clk_put(ctx->bus_clk);
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int fimd_suspend(struct device *dev)
+{
+ struct fimd_context *ctx = get_fimd_context(dev);
+
+ if (pm_runtime_suspended(dev))
+ return 0;
+
+ /*
+ * do not use pm_runtime_suspend(). if pm_runtime_suspend() is
+ * called here, an error would be returned by that interface
+ * because the usage_count of pm runtime is more than 1.
+ */
+ return fimd_power_on(ctx, false);
+}
+
+static int fimd_resume(struct device *dev)
+{
+ struct fimd_context *ctx = get_fimd_context(dev);
+
+ /*
+ * if entered to sleep when lcd panel was on, the usage_count
+ * of pm runtime would still be 1 so in this case, fimd driver
+ * should be on directly not drawing on pm runtime interface.
+ */
+ if (!pm_runtime_suspended(dev))
+ return fimd_power_on(ctx, true);
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_PM_RUNTIME
+static int fimd_runtime_suspend(struct device *dev)
+{
+ struct fimd_context *ctx = get_fimd_context(dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ return fimd_power_on(ctx, false);
+}
+
+static int fimd_runtime_resume(struct device *dev)
+{
+ struct fimd_context *ctx = get_fimd_context(dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ return fimd_power_on(ctx, true);
+}
+#endif
+
+static const struct dev_pm_ops fimd_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(fimd_suspend, fimd_resume)
+ SET_RUNTIME_PM_OPS(fimd_runtime_suspend, fimd_runtime_resume, NULL)
+};
+
static struct platform_driver fimd_driver = {
.probe = fimd_probe,
.remove = __devexit_p(fimd_remove),
.driver = {
.name = "exynos4-fb",
.owner = THIS_MODULE,
+ .pm = &fimd_pm_ops,
},
};
projects / karo-tx-linux.git / blobdiff