drm/mxsfb/mxsfb_drv.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /*
0003  * Copyright (C) 2016 Marek Vasut <marex@denx.de>
0004  *
0005  * i.MX23/i.MX28/i.MX6SX MXSFB LCD controller driver.
0006  */
0007
0008 #ifndef __MXSFB_DRV_H__
0009 #define __MXSFB_DRV_H__
0010
0011 #include <drm/drm_crtc.h>
0012 #include <drm/drm_device.h>
0013 #include <drm/drm_encoder.h>
0014 #include <drm/drm_plane.h>
0015
0016 struct clk;
0017
0018 struct mxsfb_devdata {
0019     unsigned int    transfer_count;
0020     unsigned int    cur_buf;
0021     unsigned int    next_buf;
0022     unsigned int    hs_wdth_mask;
0023     unsigned int    hs_wdth_shift;
0024     bool        has_overlay;
0025     bool        has_ctrl2;
0026     bool        has_crc32;
0027 };
0028
0029 struct mxsfb_drm_private {
0030     const struct mxsfb_devdata  *devdata;
0031
0032     void __iomem            *base;  /* registers */
0033     struct clk          *clk;
0034     struct clk          *clk_axi;
0035     struct clk          *clk_disp_axi;
0036
0037     unsigned int            irq;
0038
0039     struct drm_device       *drm;
0040     struct {
0041         struct drm_plane    primary;
0042         struct drm_plane    overlay;
0043     } planes;
0044     struct drm_crtc         crtc;
0045     struct drm_encoder      encoder;
0046     struct drm_connector        *connector;
0047     struct drm_bridge       *bridge;
0048
0049     bool                crc_active;
0050 };
0051
0052 static inline struct mxsfb_drm_private *
0053 to_mxsfb_drm_private(struct drm_device *drm)
0054 {
0055     return drm->dev_private;
0056 }
0057
0058 void mxsfb_enable_axi_clk(struct mxsfb_drm_private *mxsfb);
0059 void mxsfb_disable_axi_clk(struct mxsfb_drm_private *mxsfb);
0060
0061 int mxsfb_kms_init(struct mxsfb_drm_private *mxsfb);
0062
0063 #endif /* __MXSFB_DRV_H__ */