drivers/gpu/drm/i915/intel_dsi_cmd.h

   1 /*
   2  * Copyright © 2013 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Author: Jani Nikula <jani.nikula@intel.com>
  24  */
  25
  26 #ifndef _INTEL_DSI_DSI_H
  27 #define _INTEL_DSI_DSI_H
  28
  29 #include <drm/drmP.h>
  30 #include <drm/drm_crtc.h>
  31 #include <video/mipi_display.h>
  32 #include "i915_drv.h"
  33 #include "intel_drv.h"
  34 #include "intel_dsi.h"
  35
  36 #define DPI_LP_MODE_EN  false
  37 #define DPI_HS_MODE_EN  true
  38
  39 void dsi_hs_mode_enable(struct intel_dsi *intel_dsi, bool enable);
  40
  41 int dsi_vc_dcs_write(struct intel_dsi *intel_dsi, int channel,
  42                      const u8 *data, int len);
  43
  44 int dsi_vc_generic_write(struct intel_dsi *intel_dsi, int channel,
  45                          const u8 *data, int len);
  46
  47 int dsi_vc_dcs_read(struct intel_dsi *intel_dsi, int channel, u8 dcs_cmd,
  48                     u8 *buf, int buflen);
  49
  50 int dsi_vc_generic_read(struct intel_dsi *intel_dsi, int channel,
  51                         u8 *reqdata, int reqlen, u8 *buf, int buflen);
  52
  53 int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs);
  54
  55 /* XXX: questionable write helpers */
  56 static inline int dsi_vc_dcs_write_0(struct intel_dsi *intel_dsi,
  57                                      int channel, u8 dcs_cmd)
  58 {
  59         return dsi_vc_dcs_write(intel_dsi, channel, &dcs_cmd, 1);
  60 }
  61
  62 static inline int dsi_vc_dcs_write_1(struct intel_dsi *intel_dsi,
  63                                      int channel, u8 dcs_cmd, u8 param)
  64 {
  65         u8 buf[2] = { dcs_cmd, param };
  66         return dsi_vc_dcs_write(intel_dsi, channel, buf, 2);
  67 }
  68
  69 static inline int dsi_vc_generic_write_0(struct intel_dsi *intel_dsi,
  70                                          int channel)
  71 {
  72         return dsi_vc_generic_write(intel_dsi, channel, NULL, 0);
  73 }
  74
  75 static inline int dsi_vc_generic_write_1(struct intel_dsi *intel_dsi,
  76                                          int channel, u8 param)
  77 {
  78         return dsi_vc_generic_write(intel_dsi, channel, &param, 1);
  79 }
  80
  81 static inline int dsi_vc_generic_write_2(struct intel_dsi *intel_dsi,
  82                                          int channel, u8 param1, u8 param2)
  83 {
  84         u8 buf[2] = { param1, param2 };
  85         return dsi_vc_generic_write(intel_dsi, channel, buf, 2);
  86 }
  87
  88 /* XXX: questionable read helpers */
  89 static inline int dsi_vc_generic_read_0(struct intel_dsi *intel_dsi,
  90                                         int channel, u8 *buf, int buflen)
  91 {
  92         return dsi_vc_generic_read(intel_dsi, channel, NULL, 0, buf, buflen);
  93 }
  94
  95 static inline int dsi_vc_generic_read_1(struct intel_dsi *intel_dsi,
  96                                         int channel, u8 param, u8 *buf,
  97                                         int buflen)
  98 {
  99         return dsi_vc_generic_read(intel_dsi, channel, &param, 1, buf, buflen);
 100 }
 101
 102 static inline int dsi_vc_generic_read_2(struct intel_dsi *intel_dsi,
 103                                         int channel, u8 param1, u8 param2,
 104                                         u8 *buf, int buflen)
 105 {
 106         u8 req[2] = { param1, param2 };
 107
 108         return dsi_vc_generic_read(intel_dsi, channel, req, 2, buf, buflen);
 109 }
 110
 111
 112 #endif /* _INTEL_DSI_DSI_H */