forked from Minki/linux
7e9804fdcf
Add basic support for using the drm mipi dsi framework for DSI. We don't use device tree which is pretty much required by mipi_dsi_host_register and friends, and we don't have the kind of device model the functions expect either. So we cheat and use it as a library to abstract what we need: a nice, clean interface for DSI transfers. This means we will have to be careful with what functions we call, as the driver model devices in mipi_dsi_host and mipi_dsi_device will *not* be initialized. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/*
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* Copyright © 2013 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _INTEL_DSI_H
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#define _INTEL_DSI_H
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_mipi_dsi.h>
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#include "intel_drv.h"
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/* Dual Link support */
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#define DSI_DUAL_LINK_NONE 0
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#define DSI_DUAL_LINK_FRONT_BACK 1
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#define DSI_DUAL_LINK_PIXEL_ALT 2
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struct intel_dsi_host;
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struct intel_dsi {
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struct intel_encoder base;
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struct drm_panel *panel;
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struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
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struct intel_connector *attached_connector;
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/* bit mask of ports being driven */
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u16 ports;
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/* if true, use HS mode, otherwise LP */
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bool hs;
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/* virtual channel */
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int channel;
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/* Video mode or command mode */
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u16 operation_mode;
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/* number of DSI lanes */
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unsigned int lane_count;
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/* video mode pixel format for MIPI_DSI_FUNC_PRG register */
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u32 pixel_format;
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/* video mode format for MIPI_VIDEO_MODE_FORMAT register */
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u32 video_mode_format;
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/* eot for MIPI_EOT_DISABLE register */
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u8 eotp_pkt;
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u8 clock_stop;
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u8 escape_clk_div;
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u8 dual_link;
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u8 pixel_overlap;
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u32 port_bits;
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u32 bw_timer;
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u32 dphy_reg;
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u32 video_frmt_cfg_bits;
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u16 lp_byte_clk;
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/* timeouts in byte clocks */
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u16 lp_rx_timeout;
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u16 turn_arnd_val;
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u16 rst_timer_val;
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u16 hs_to_lp_count;
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u16 clk_lp_to_hs_count;
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u16 clk_hs_to_lp_count;
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u16 init_count;
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u32 pclk;
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u16 burst_mode_ratio;
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/* all delays in ms */
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u16 backlight_off_delay;
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u16 backlight_on_delay;
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u16 panel_on_delay;
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u16 panel_off_delay;
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u16 panel_pwr_cycle_delay;
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};
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struct intel_dsi_host {
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struct mipi_dsi_host base;
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struct intel_dsi *intel_dsi;
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enum port port;
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/* our little hack */
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struct mipi_dsi_device *device;
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};
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static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
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{
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return container_of(h, struct intel_dsi_host, base);
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}
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#define for_each_dsi_port(__port, __ports_mask) \
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for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++) \
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if ((__ports_mask) & (1 << (__port)))
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static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
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{
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return container_of(encoder, struct intel_dsi, base.base);
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}
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extern void vlv_enable_dsi_pll(struct intel_encoder *encoder);
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extern void vlv_disable_dsi_pll(struct intel_encoder *encoder);
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extern u32 vlv_get_dsi_pclk(struct intel_encoder *encoder, int pipe_bpp);
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struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id);
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#endif /* _INTEL_DSI_H */
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