#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_modes.h>
-#include <drm/drm_panel.h>
+#include <drm/drm_of.h>
#include <linux/component.h>
#include <linux/ioport.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
-#include <linux/of_graph.h>
#include <linux/of_irq.h>
#include <linux/regmap.h>
#include <linux/reset.h>
/*
* This is called a backporch in the register documentation,
- * but it really is the front porch + hsync
+ * but it really is the back porch + hsync
*/
bp = mode->crtc_htotal - mode->crtc_hsync_start;
DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
/*
* This is called a backporch in the register documentation,
- * but it really is the front porch + hsync
+ * but it really is the back porch + hsync
*/
bp = mode->crtc_vtotal - mode->crtc_vsync_start;
DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
{
struct sun4i_tcon *tcon = private;
struct drm_device *drm = tcon->drm;
- struct sun4i_drv *drv = drm->dev_private;
- struct sun4i_crtc *scrtc = drv->crtc;
+ struct sun4i_crtc *scrtc = tcon->crtc;
unsigned int status;
regmap_read(tcon->regs, SUN4I_TCON_GINT0_REG, &status);
}
}
- return sun4i_dclk_create(dev, tcon);
+ return 0;
}
static void sun4i_tcon_free_clocks(struct sun4i_tcon *tcon)
{
- sun4i_dclk_free(tcon);
clk_disable_unprepare(tcon->clk);
}
return 0;
}
-struct drm_panel *sun4i_tcon_find_panel(struct device_node *node)
-{
- struct device_node *port, *remote, *child;
- struct device_node *end_node = NULL;
-
- /* Inputs are listed first, then outputs */
- port = of_graph_get_port_by_id(node, 1);
-
- /*
- * Our first output is the RGB interface where the panel will
- * be connected.
- */
- for_each_child_of_node(port, child) {
- u32 reg;
-
- of_property_read_u32(child, "reg", ®);
- if (reg == 0)
- end_node = child;
- }
-
- if (!end_node) {
- DRM_DEBUG_DRIVER("Missing panel endpoint\n");
- return ERR_PTR(-ENODEV);
- }
-
- remote = of_graph_get_remote_port_parent(end_node);
- if (!remote) {
- DRM_DEBUG_DRIVER("Unable to parse remote node\n");
- return ERR_PTR(-EINVAL);
- }
-
- return of_drm_find_panel(remote) ?: ERR_PTR(-EPROBE_DEFER);
-}
-
-struct drm_bridge *sun4i_tcon_find_bridge(struct device_node *node)
-{
- struct device_node *port, *remote, *child;
- struct device_node *end_node = NULL;
-
- /* Inputs are listed first, then outputs */
- port = of_graph_get_port_by_id(node, 1);
-
- /*
- * Our first output is the RGB interface where the panel will
- * be connected.
- */
- for_each_child_of_node(port, child) {
- u32 reg;
-
- of_property_read_u32(child, "reg", ®);
- if (reg == 0)
- end_node = child;
- }
-
- if (!end_node) {
- DRM_DEBUG_DRIVER("Missing bridge endpoint\n");
- return ERR_PTR(-ENODEV);
- }
-
- remote = of_graph_get_remote_port_parent(end_node);
- if (!remote) {
- DRM_DEBUG_DRIVER("Enable to parse remote node\n");
- return ERR_PTR(-EINVAL);
- }
-
- return of_drm_find_bridge(remote) ?: ERR_PTR(-EPROBE_DEFER);
-}
-
static int sun4i_tcon_bind(struct device *dev, struct device *master,
void *data)
{
return ret;
}
+ ret = sun4i_tcon_init_clocks(dev, tcon);
+ if (ret) {
+ dev_err(dev, "Couldn't init our TCON clocks\n");
+ goto err_assert_reset;
+ }
+
ret = sun4i_tcon_init_regmap(dev, tcon);
if (ret) {
dev_err(dev, "Couldn't init our TCON regmap\n");
- goto err_assert_reset;
+ goto err_free_clocks;
}
- ret = sun4i_tcon_init_clocks(dev, tcon);
+ ret = sun4i_dclk_create(dev, tcon);
if (ret) {
- dev_err(dev, "Couldn't init our TCON clocks\n");
- goto err_assert_reset;
+ dev_err(dev, "Couldn't create our TCON dot clock\n");
+ goto err_free_clocks;
}
ret = sun4i_tcon_init_irq(dev, tcon);
if (ret) {
dev_err(dev, "Couldn't init our TCON interrupts\n");
+ goto err_free_dotclock;
+ }
+
+ tcon->crtc = sun4i_crtc_init(drm, drv->backend, tcon);
+ if (IS_ERR(tcon->crtc)) {
+ dev_err(dev, "Couldn't create our CRTC\n");
+ ret = PTR_ERR(tcon->crtc);
goto err_free_clocks;
}
- ret = sun4i_rgb_init(drm);
+ ret = sun4i_rgb_init(drm, tcon);
if (ret < 0)
goto err_free_clocks;
return 0;
+err_free_dotclock:
+ sun4i_dclk_free(tcon);
err_free_clocks:
sun4i_tcon_free_clocks(tcon);
err_assert_reset:
{
struct sun4i_tcon *tcon = dev_get_drvdata(dev);
+ sun4i_dclk_free(tcon);
sun4i_tcon_free_clocks(tcon);
}
struct device_node *node = pdev->dev.of_node;
struct drm_bridge *bridge;
struct drm_panel *panel;
+ int ret;
- /*
- * Neither the bridge or the panel is ready.
- * Defer the probe.
- */
- panel = sun4i_tcon_find_panel(node);
- bridge = sun4i_tcon_find_bridge(node);
-
- /*
- * If we don't have a panel endpoint, just go on
- */
- if ((PTR_ERR(panel) == -EPROBE_DEFER) &&
- (PTR_ERR(bridge) == -EPROBE_DEFER)) {
- DRM_DEBUG_DRIVER("Still waiting for our panel/bridge. Deferring...\n");
- return -EPROBE_DEFER;
- }
+ ret = drm_of_find_panel_or_bridge(node, 1, 0, &panel, &bridge);
+ if (ret == -EPROBE_DEFER)
+ return ret;
return component_add(&pdev->dev, &sun4i_tcon_ops);
}