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 void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi);
  55
  56 /* XXX: questionable write helpers */
  57 static inline int dsi_vc_dcs_write_0(struct intel_dsi *intel_dsi,
  58                                      int channel, u8 dcs_cmd)
  59 {
  60         return dsi_vc_dcs_write(intel_dsi, channel, &dcs_cmd, 1);
  61 }
  62
  63 static inline int dsi_vc_dcs_write_1(struct intel_dsi *intel_dsi,
  64                                      int channel, u8 dcs_cmd, u8 param)
  65 {
  66         u8 buf[2] = { dcs_cmd, param };
  67         return dsi_vc_dcs_write(intel_dsi, channel, buf, 2);
  68 }
  69
  70 static inline int dsi_vc_generic_write_0(struct intel_dsi *intel_dsi,
  71                                          int channel)
  72 {
  73         return dsi_vc_generic_write(intel_dsi, channel, NULL, 0);
  74 }
  75
  76 static inline int dsi_vc_generic_write_1(struct intel_dsi *intel_dsi,
  77                                          int channel, u8 param)
  78 {
  79         return dsi_vc_generic_write(intel_dsi, channel, &param, 1);
  80 }
  81
  82 static inline int dsi_vc_generic_write_2(struct intel_dsi *intel_dsi,
  83                                          int channel, u8 param1, u8 param2)
  84 {
  85         u8 buf[2] = { param1, param2 };
  86         return dsi_vc_generic_write(intel_dsi, channel, buf, 2);
  87 }
  88
  89 /* XXX: questionable read helpers */
  90 static inline int dsi_vc_generic_read_0(struct intel_dsi *intel_dsi,
  91                                         int channel, u8 *buf, int buflen)
  92 {
  93         return dsi_vc_generic_read(intel_dsi, channel, NULL, 0, buf, buflen);
  94 }
  95
  96 static inline int dsi_vc_generic_read_1(struct intel_dsi *intel_dsi,
  97                                         int channel, u8 param, u8 *buf,
  98                                         int buflen)
  99 {
 100         return dsi_vc_generic_read(intel_dsi, channel, &param, 1, buf, buflen);
 101 }
 102
 103 static inline int dsi_vc_generic_read_2(struct intel_dsi *intel_dsi,
 104                                         int channel, u8 param1, u8 param2,
 105                                         u8 *buf, int buflen)
 106 {
 107         u8 req[2] = { param1, param2 };
 108
 109         return dsi_vc_generic_read(intel_dsi, channel, req, 2, buf, buflen);
 110 }
 111
 112
 113 #endif /* _INTEL_DSI_DSI_H */