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 39void dsi_hs_mode_enable(struct intel_dsi *intel_dsi, bool enable); 40 41int dsi_vc_dcs_write(struct intel_dsi *intel_dsi, int channel, 42 const u8 *data, int len); 43 44int dsi_vc_generic_write(struct intel_dsi *intel_dsi, int channel, 45 const u8 *data, int len); 46 47int dsi_vc_dcs_read(struct intel_dsi *intel_dsi, int channel, u8 dcs_cmd, 48 u8 *buf, int buflen); 49 50int dsi_vc_generic_read(struct intel_dsi *intel_dsi, int channel, 51 u8 *reqdata, int reqlen, u8 *buf, int buflen); 52 53int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs); 54void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi); 55 56/* XXX: questionable write helpers */ 57static 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 63static 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 70static 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 76static 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, ¶m, 1); 80} 81 82static 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 */ 90static 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 96static 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, ¶m, 1, buf, buflen); 101} 102 103static 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 */ 114