--- /dev/null
+/*
+ * Copyright (C) 2012 Texas Instruments
+ * Author: Rob Clark <robdclark@gmail.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 Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __TILCDC_DRV_H__
+#define __TILCDC_DRV_H__
+
+#include <linux/clk.h>
+#include <linux/cpufreq.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/list.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+
+/* Defaulting to pixel clock defined on AM335x */
+#define TILCDC_DEFAULT_MAX_PIXELCLOCK 126000
+/* Defaulting to max width as defined on AM335x */
+#define TILCDC_DEFAULT_MAX_WIDTH 2048
+/*
+ * This may need some tweaking, but want to allow at least 1280x1024@60
+ * with optimized DDR & EMIF settings tweaked 1920x1080@24 appears to
+ * be supportable
+ */
+#define TILCDC_DEFAULT_MAX_BANDWIDTH (1280*1024*60)
+
+
+struct tilcdc_drm_private {
+ void __iomem *mmio;
+
+ struct clk *disp_clk; /* display dpll */
+ struct clk *clk; /* functional clock */
+ int rev; /* IP revision */
+
+ /* don't attempt resolutions w/ higher W * H * Hz: */
+ uint32_t max_bandwidth;
+ /*
+ * Pixel Clock will be restricted to some value as
+ * defined in the device datasheet measured in KHz
+ */
+ uint32_t max_pixelclock;
+ /*
+ * Max allowable width is limited on a per device basis
+ * measured in pixels
+ */
+ uint32_t max_width;
+
+ /* register contents saved across suspend/resume: */
+ u32 saved_register[12];
+
+#ifdef CONFIG_CPU_FREQ
+ struct notifier_block freq_transition;
+ unsigned int lcd_fck_rate;
+#endif
+
+ struct workqueue_struct *wq;
+
+ struct drm_fbdev_cma *fbdev;
+
+ struct drm_crtc *crtc;
+
+ unsigned int num_encoders;
+ struct drm_encoder *encoders[8];
+
+ unsigned int num_connectors;
+ struct drm_connector *connectors[8];
+};
+
+/* Sub-module for display. Since we don't know at compile time what panels
+ * or display adapter(s) might be present (for ex, off chip dvi/tfp410,
+ * hdmi encoder, various lcd panels), the connector/encoder(s) are split into
+ * separate drivers. If they are probed and found to be present, they
+ * register themselves with tilcdc_register_module().
+ */
+struct tilcdc_module;
+
+struct tilcdc_module_ops {
+ /* create appropriate encoders/connectors: */
+ int (*modeset_init)(struct tilcdc_module *mod, struct drm_device *dev);
+#ifdef CONFIG_DEBUG_FS
+ /* create debugfs nodes (can be NULL): */
+ int (*debugfs_init)(struct tilcdc_module *mod, struct drm_minor *minor);
+ /* cleanup debugfs nodes (can be NULL): */
+ void (*debugfs_cleanup)(struct tilcdc_module *mod, struct drm_minor *minor);
+#endif
+};
+
+struct tilcdc_module {
+ const char *name;
+ struct list_head list;
+ const struct tilcdc_module_ops *funcs;
+ unsigned int preferred_bpp;
+};
+
+void tilcdc_module_init(struct tilcdc_module *mod, const char *name,
+ const struct tilcdc_module_ops *funcs);
+void tilcdc_module_cleanup(struct tilcdc_module *mod);
+void tilcdc_slave_probedefer(bool defered);
+
+/* Panel config that needs to be set in the crtc, but is not coming from
+ * the mode timings. The display module is expected to call
+ * tilcdc_crtc_set_panel_info() to set this during modeset.
+ */
+struct tilcdc_panel_info {
+
+ /* AC Bias Pin Frequency */
+ uint32_t ac_bias;
+
+ /* AC Bias Pin Transitions per Interrupt */
+ uint32_t ac_bias_intrpt;
+
+ /* DMA burst size */
+ uint32_t dma_burst_sz;
+
+ /* Bits per pixel */
+ uint32_t bpp;
+
+ /* FIFO DMA Request Delay */
+ uint32_t fdd;
+
+ /* TFT Alternative Signal Mapping (Only for active) */
+ bool tft_alt_mode;
+
+ /* Invert pixel clock */
+ bool invert_pxl_clk;
+
+ /* Horizontal and Vertical Sync Edge: 0=rising 1=falling */
+ uint32_t sync_edge;
+
+ /* Horizontal and Vertical Sync: Control: 0=ignore */
+ uint32_t sync_ctrl;
+
+ /* Raster Data Order Select: 1=Most-to-least 0=Least-to-most */
+ uint32_t raster_order;
+
+ /* DMA FIFO threshold */
+ uint32_t fifo_th;
+};
+
+#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
+
+struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev);
+void tilcdc_crtc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
+irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc);
+void tilcdc_crtc_update_clk(struct drm_crtc *crtc);
+void tilcdc_crtc_set_panel_info(struct drm_crtc *crtc,
+ const struct tilcdc_panel_info *info);
+int tilcdc_crtc_mode_valid(struct drm_crtc *crtc, struct drm_display_mode *mode);
+int tilcdc_crtc_max_width(struct drm_crtc *crtc);
+
+#endif /* __TILCDC_DRV_H__ */
Code Review / kvmfornfv.git / blobdiff