Commit 2ab8b458 authored by Shobhit Kumar's avatar Shobhit Kumar Committed by Daniel Vetter
Browse files

drm/i915: Add support for Generic MIPI panel driver 



This driver makes use of the generic panel information from the VBT.
Panel information is classified into two - panel configuration and panel
power sequence which is unique to each panel. The generic driver uses the
panel configuration and sequence parsed from VBT block #52 and #53

v2: Address review comments by Jani
    - Move all of the things in driver c file from header
    - Make all functions static
    - Make use of video/mipi_display.c instead of redefining
    - Null checks during sequence execution

v3: Address review comments by Damien
    - Rename the panel driver file as intel_dsi_panel_vbt.c
    - Fix style changes as suggested
    - Correct comments for lp->hs and hs->lp count calculations
    - General updating comments to have more clarity
    - using max() instead of ternary operator
    - Fix names (ui_num, ui_den) while using UI in calculations
    - compute max of lp_to_hs switch and hs_to_lp switch while computing
      hs_lp_switch_count

Signed-off-by: default avatarShobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: default avatarDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent d6e3cca3

drivers/gpu/drm/i915/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -62,6 +62,7 @@ i915-y += dvo_ch7017.o \ 
	  intel_dsi_cmd.o \

	  intel_dsi.o \

	  intel_dsi_pll.o \

	  intel_dsi_panel_vbt.o \

	  intel_dvo.o \

	  intel_hdmi.o \

	  intel_i2c.o \

drivers/gpu/drm/i915/intel_dsi.c

+5 −0
Original line number Diff line number Diff line
@@ -35,6 +35,11 @@ 


/* the sub-encoders aka panel drivers */

static const struct intel_dsi_device intel_dsi_devices[] = {

	{

		.panel_id = MIPI_DSI_GENERIC_PANEL_ID,

		.name = "vbt-generic-dsi-vid-mode-display",

		.dev_ops = &vbt_generic_dsi_display_ops,

	},

};



static void band_gap_reset(struct drm_i915_private *dev_priv)

drivers/gpu/drm/i915/intel_dsi.h

+2 −0
Original line number Diff line number Diff line
@@ -133,4 +133,6 @@ static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder) 
extern void vlv_enable_dsi_pll(struct intel_encoder *encoder);

extern void vlv_disable_dsi_pll(struct intel_encoder *encoder);



extern struct intel_dsi_dev_ops vbt_generic_dsi_display_ops;



#endif /* _INTEL_DSI_H */

drivers/gpu/drm/i915/intel_dsi_panel_vbt.c

0 → 100644
+589 −0
Original line number Diff line number Diff line 
/*

 * Copyright © 2014 Intel Corporation

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice (including the next

 * paragraph) shall be included in all copies or substantial portions of the

 * Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 *

 * Author: Shobhit Kumar <shobhit.kumar@intel.com>

 *

 */



#include <drm/drmP.h>

#include <drm/drm_crtc.h>

#include <drm/drm_edid.h>

#include <drm/i915_drm.h>

#include <linux/slab.h>

#include <video/mipi_display.h>

#include <asm/intel-mid.h>

#include <video/mipi_display.h>

#include "i915_drv.h"

#include "intel_drv.h"

#include "intel_dsi.h"

#include "intel_dsi_cmd.h"



#define MIPI_TRANSFER_MODE_SHIFT	0

#define MIPI_VIRTUAL_CHANNEL_SHIFT	1

#define MIPI_PORT_SHIFT			3



#define PREPARE_CNT_MAX		0x3F

#define EXIT_ZERO_CNT_MAX	0x3F

#define CLK_ZERO_CNT_MAX	0xFF

#define TRAIL_CNT_MAX		0x1F



#define NS_KHZ_RATIO 1000000



#define GPI0_NC_0_HV_DDI0_HPD           0x4130

#define GPIO_NC_0_HV_DDI0_PAD           0x4138

#define GPIO_NC_1_HV_DDI0_DDC_SDA       0x4120

#define GPIO_NC_1_HV_DDI0_DDC_SDA_PAD   0x4128

#define GPIO_NC_2_HV_DDI0_DDC_SCL       0x4110

#define GPIO_NC_2_HV_DDI0_DDC_SCL_PAD   0x4118

#define GPIO_NC_3_PANEL0_VDDEN          0x4140

#define GPIO_NC_3_PANEL0_VDDEN_PAD      0x4148

#define GPIO_NC_4_PANEL0_BLKEN          0x4150

#define GPIO_NC_4_PANEL0_BLKEN_PAD      0x4158

#define GPIO_NC_5_PANEL0_BLKCTL         0x4160

#define GPIO_NC_5_PANEL0_BLKCTL_PAD     0x4168

#define GPIO_NC_6_PCONF0                0x4180

#define GPIO_NC_6_PAD                   0x4188

#define GPIO_NC_7_PCONF0                0x4190

#define GPIO_NC_7_PAD                   0x4198

#define GPIO_NC_8_PCONF0                0x4170

#define GPIO_NC_8_PAD                   0x4178

#define GPIO_NC_9_PCONF0                0x4100

#define GPIO_NC_9_PAD                   0x4108

#define GPIO_NC_10_PCONF0               0x40E0

#define GPIO_NC_10_PAD                  0x40E8

#define GPIO_NC_11_PCONF0               0x40F0

#define GPIO_NC_11_PAD                  0x40F8



struct gpio_table {

	u16 function_reg;

	u16 pad_reg;

	u8 init;

};



static struct gpio_table gtable[] = {

	{ GPI0_NC_0_HV_DDI0_HPD, GPIO_NC_0_HV_DDI0_PAD, 0 },

	{ GPIO_NC_1_HV_DDI0_DDC_SDA, GPIO_NC_1_HV_DDI0_DDC_SDA_PAD, 0 },

	{ GPIO_NC_2_HV_DDI0_DDC_SCL, GPIO_NC_2_HV_DDI0_DDC_SCL_PAD, 0 },

	{ GPIO_NC_3_PANEL0_VDDEN, GPIO_NC_3_PANEL0_VDDEN_PAD, 0 },

	{ GPIO_NC_4_PANEL0_BLKEN, GPIO_NC_4_PANEL0_BLKEN_PAD, 0 },

	{ GPIO_NC_5_PANEL0_BLKCTL, GPIO_NC_5_PANEL0_BLKCTL_PAD, 0 },

	{ GPIO_NC_6_PCONF0, GPIO_NC_6_PAD, 0 },

	{ GPIO_NC_7_PCONF0, GPIO_NC_7_PAD, 0 },

	{ GPIO_NC_8_PCONF0, GPIO_NC_8_PAD, 0 },

	{ GPIO_NC_9_PCONF0, GPIO_NC_9_PAD, 0 },

	{ GPIO_NC_10_PCONF0, GPIO_NC_10_PAD, 0},

	{ GPIO_NC_11_PCONF0, GPIO_NC_11_PAD, 0}

};



static u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi, u8 *data)

{

	u8 type, byte, mode, vc, port;

	u16 len;



	byte = *data++;

	mode = (byte >> MIPI_TRANSFER_MODE_SHIFT) & 0x1;

	vc = (byte >> MIPI_VIRTUAL_CHANNEL_SHIFT) & 0x3;

	port = (byte >> MIPI_PORT_SHIFT) & 0x3;



	/* LP or HS mode */

	intel_dsi->hs = mode;



	/* get packet type and increment the pointer */

	type = *data++;



	len = *((u16 *) data);

	data += 2;



	switch (type) {

	case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM:

		dsi_vc_generic_write_0(intel_dsi, vc);

		break;

	case MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM:

		dsi_vc_generic_write_1(intel_dsi, vc, *data);

		break;

	case MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM:

		dsi_vc_generic_write_2(intel_dsi, vc, *data, *(data + 1));

		break;

	case MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM:

	case MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM:

	case MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM:

		DRM_DEBUG_DRIVER("Generic Read not yet implemented or used\n");

		break;

	case MIPI_DSI_GENERIC_LONG_WRITE:

		dsi_vc_generic_write(intel_dsi, vc, data, len);

		break;

	case MIPI_DSI_DCS_SHORT_WRITE:

		dsi_vc_dcs_write_0(intel_dsi, vc, *data);

		break;

	case MIPI_DSI_DCS_SHORT_WRITE_PARAM:

		dsi_vc_dcs_write_1(intel_dsi, vc, *data, *(data + 1));

		break;

	case MIPI_DSI_DCS_READ:

		DRM_DEBUG_DRIVER("DCS Read not yet implemented or used\n");

		break;

	case MIPI_DSI_DCS_LONG_WRITE:

		dsi_vc_dcs_write(intel_dsi, vc, data, len);

		break;

	};



	data += len;



	return data;

}



static u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, u8 *data)

{

	u32 delay = *((u32 *) data);



	usleep_range(delay, delay + 10);

	data += 4;



	return data;

}



static u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, u8 *data)

{

	u8 gpio, action;

	u16 function, pad;

	u32 val;

	struct drm_device *dev = intel_dsi->base.base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;



	gpio = *data++;



	/* pull up/down */

	action = *data++;



	function = gtable[gpio].function_reg;

	pad = gtable[gpio].pad_reg;



	mutex_lock(&dev_priv->dpio_lock);

	if (!gtable[gpio].init) {

		/* program the function */

		/* FIXME: remove constant below */

		vlv_gpio_nc_write(dev_priv, function, 0x2000CC00);

		gtable[gpio].init = 1;

	}



	val = 0x4 | action;



	/* pull up/down */

	vlv_gpio_nc_write(dev_priv, pad, val);

	mutex_unlock(&dev_priv->dpio_lock);



	return data;

}



typedef u8 * (*fn_mipi_elem_exec)(struct intel_dsi *intel_dsi, u8 *data);

static const fn_mipi_elem_exec exec_elem[] = {

	NULL, /* reserved */

	mipi_exec_send_packet,

	mipi_exec_delay,

	mipi_exec_gpio,

	NULL, /* status read; later */

};



/*

 * MIPI Sequence from VBT #53 parsing logic

 * We have already separated each seqence during bios parsing

 * Following is generic execution function for any sequence

 */



static const char * const seq_name[] = {

	"UNDEFINED",

	"MIPI_SEQ_ASSERT_RESET",

	"MIPI_SEQ_INIT_OTP",

	"MIPI_SEQ_DISPLAY_ON",

	"MIPI_SEQ_DISPLAY_OFF",

	"MIPI_SEQ_DEASSERT_RESET"

};



static void generic_exec_sequence(struct intel_dsi *intel_dsi, char *sequence)

{

	u8 *data = sequence;

	fn_mipi_elem_exec mipi_elem_exec;

	int index;



	if (!sequence)

		return;



	DRM_DEBUG_DRIVER("Starting MIPI sequence - %s\n", seq_name[*data]);



	/* go to the first element of the sequence */

	data++;



	/* parse each byte till we reach end of sequence byte - 0x00 */

	while (1) {

		index = *data;

		mipi_elem_exec = exec_elem[index];

		if (!mipi_elem_exec) {

			DRM_ERROR("Unsupported MIPI element, skipping sequence execution\n");

			return;

		}



		/* goto element payload */

		data++;



		/* execute the element specific rotines */

		data = mipi_elem_exec(intel_dsi, data);



		/*

		 * After processing the element, data should point to

		 * next element or end of sequence

		 * check if have we reached end of sequence

		 */

		if (*data == 0x00)

			break;

	}

}



static bool generic_init(struct intel_dsi_device *dsi)

{

	struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);

	struct drm_device *dev = intel_dsi->base.base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct mipi_config *mipi_config = dev_priv->vbt.dsi.config;

	struct mipi_pps_data *pps = dev_priv->vbt.dsi.pps;

	struct drm_display_mode *mode = dev_priv->vbt.lfp_lvds_vbt_mode;

	u32 bits_per_pixel = 24;

	u32 tlpx_ns, extra_byte_count, bitrate, tlpx_ui;

	u32 ui_num, ui_den;

	u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt;

	u32 ths_prepare_ns, tclk_trail_ns;

	u32 tclk_prepare_clkzero, ths_prepare_hszero;

	u32 lp_to_hs_switch, hs_to_lp_switch;



	DRM_DEBUG_KMS("\n");



	intel_dsi->eotp_pkt = mipi_config->eot_pkt_disabled ? 0 : 1;

	intel_dsi->clock_stop = mipi_config->enable_clk_stop ? 1 : 0;

	intel_dsi->lane_count = mipi_config->lane_cnt + 1;

	intel_dsi->pixel_format = mipi_config->videomode_color_format << 7;



	if (intel_dsi->pixel_format == VID_MODE_FORMAT_RGB666)

		bits_per_pixel = 18;

	else if (intel_dsi->pixel_format == VID_MODE_FORMAT_RGB565)

		bits_per_pixel = 16;



	bitrate = (mode->clock * bits_per_pixel) / intel_dsi->lane_count;



	intel_dsi->operation_mode = mipi_config->is_cmd_mode;

	intel_dsi->video_mode_format = mipi_config->video_transfer_mode;

	intel_dsi->escape_clk_div = mipi_config->byte_clk_sel;

	intel_dsi->lp_rx_timeout = mipi_config->lp_rx_timeout;

	intel_dsi->turn_arnd_val = mipi_config->turn_around_timeout;

	intel_dsi->rst_timer_val = mipi_config->device_reset_timer;

	intel_dsi->init_count = mipi_config->master_init_timer;

	intel_dsi->bw_timer = mipi_config->dbi_bw_timer;

	intel_dsi->video_frmt_cfg_bits = mipi_config->bta_enabled ? DISABLE_VIDEO_BTA : 0;



	switch (intel_dsi->escape_clk_div) {

	case 0:

		tlpx_ns = 50;

		break;

	case 1:

		tlpx_ns = 100;

		break;



	case 2:

		tlpx_ns = 200;

		break;

	default:

		tlpx_ns = 50;

		break;

	}



	switch (intel_dsi->lane_count) {

	case 1:

	case 2:

		extra_byte_count = 2;

		break;

	case 3:

		extra_byte_count = 4;

		break;

	case 4:

	default:

		extra_byte_count = 3;

		break;

	}



	/*

	 * ui(s) = 1/f [f in hz]

	 * ui(ns) = 10^9 / (f*10^6) [f in Mhz] -> 10^3/f(Mhz)

	 */



	/* in Kbps */

	ui_num = NS_KHZ_RATIO;

	ui_den = bitrate;



	tclk_prepare_clkzero = mipi_config->tclk_prepare_clkzero;

	ths_prepare_hszero = mipi_config->ths_prepare_hszero;



	/*

	 * B060

	 * LP byte clock = TLPX/ (8UI)

	 */

	intel_dsi->lp_byte_clk = DIV_ROUND_UP(tlpx_ns * ui_den, 8 * ui_num);



	/* count values in UI = (ns value) * (bitrate / (2 * 10^6))

	 *

	 * Since txddrclkhs_i is 2xUI, all the count values programmed in

	 * DPHY param register are divided by 2

	 *

	 * prepare count

	 */

	ths_prepare_ns = max(mipi_config->ths_prepare, mipi_config->tclk_prepare);

	prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * ui_den, ui_num * 2);



	/* exit zero count */

	exit_zero_cnt = DIV_ROUND_UP(

				(ths_prepare_hszero - ths_prepare_ns) * ui_den,

				ui_num * 2

				);



	/*

	 * Exit zero  is unified val ths_zero and ths_exit

	 * minimum value for ths_exit = 110ns

	 * min (exit_zero_cnt * 2) = 110/UI

	 * exit_zero_cnt = 55/UI

	 */

	 if (exit_zero_cnt < (55 * ui_den / ui_num))

		if ((55 * ui_den) % ui_num)

			exit_zero_cnt += 1;



	/* clk zero count */

	clk_zero_cnt = DIV_ROUND_UP(

			(tclk_prepare_clkzero -	ths_prepare_ns)

			* ui_den, 2 * ui_num);



	/* trail count */

	tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail);

	trail_cnt = DIV_ROUND_UP(tclk_trail_ns * ui_den, 2 * ui_num);



	if (prepare_cnt > PREPARE_CNT_MAX ||

		exit_zero_cnt > EXIT_ZERO_CNT_MAX ||

		clk_zero_cnt > CLK_ZERO_CNT_MAX ||

		trail_cnt > TRAIL_CNT_MAX)

		DRM_DEBUG_DRIVER("Values crossing maximum limits, restricting to max values\n");



	if (prepare_cnt > PREPARE_CNT_MAX)

		prepare_cnt = PREPARE_CNT_MAX;



	if (exit_zero_cnt > EXIT_ZERO_CNT_MAX)

		exit_zero_cnt = EXIT_ZERO_CNT_MAX;



	if (clk_zero_cnt > CLK_ZERO_CNT_MAX)

		clk_zero_cnt = CLK_ZERO_CNT_MAX;



	if (trail_cnt > TRAIL_CNT_MAX)

		trail_cnt = TRAIL_CNT_MAX;



	/* B080 */

	intel_dsi->dphy_reg = exit_zero_cnt << 24 | trail_cnt << 16 |

						clk_zero_cnt << 8 | prepare_cnt;



	/*

	 * LP to HS switch count = 4TLPX + PREP_COUNT * 2 + EXIT_ZERO_COUNT * 2

	 *					+ 10UI + Extra Byte Count

	 *

	 * HS to LP switch count = THS-TRAIL + 2TLPX + Extra Byte Count

	 * Extra Byte Count is calculated according to number of lanes.

	 * High Low Switch Count is the Max of LP to HS and

	 * HS to LP switch count

	 *

	 */

	tlpx_ui = DIV_ROUND_UP(tlpx_ns * ui_den, ui_num);



	/* B044 */

	/* FIXME:

	 * The comment above does not match with the code */

	lp_to_hs_switch = DIV_ROUND_UP(4 * tlpx_ui + prepare_cnt * 2 +

						exit_zero_cnt * 2 + 10, 8);



	hs_to_lp_switch = DIV_ROUND_UP(mipi_config->ths_trail + 2 * tlpx_ui, 8);



	intel_dsi->hs_to_lp_count = max(lp_to_hs_switch, hs_to_lp_switch);

	intel_dsi->hs_to_lp_count += extra_byte_count;



	/* B088 */

	/* LP -> HS for clock lanes

	 * LP clk sync + LP11 + LP01 + tclk_prepare + tclk_zero +

	 *						extra byte count

	 * 2TPLX + 1TLPX + 1 TPLX(in ns) + prepare_cnt * 2 + clk_zero_cnt *

	 *					2(in UI) + extra byte count

	 * In byteclks = (4TLPX + prepare_cnt * 2 + clk_zero_cnt *2 (in UI)) /

	 *					8 + extra byte count

	 */

	intel_dsi->clk_lp_to_hs_count =

		DIV_ROUND_UP(

			4 * tlpx_ui + prepare_cnt * 2 +

			clk_zero_cnt * 2,

			8);



	intel_dsi->clk_lp_to_hs_count += extra_byte_count;



	/* HS->LP for Clock Lanes

	 * Low Power clock synchronisations + 1Tx byteclk + tclk_trail +

	 *						Extra byte count

	 * 2TLPX + 8UI + (trail_count*2)(in UI) + Extra byte count

	 * In byteclks = (2*TLpx(in UI) + trail_count*2 +8)(in UI)/8 +

	 *						Extra byte count

	 */

	intel_dsi->clk_hs_to_lp_count =

		DIV_ROUND_UP(2 * tlpx_ui + trail_cnt * 2 + 8,

			8);

	intel_dsi->clk_hs_to_lp_count += extra_byte_count;



	DRM_DEBUG_KMS("Eot %s\n", intel_dsi->eotp_pkt ? "enabled" : "disabled");

	DRM_DEBUG_KMS("Clockstop %s\n", intel_dsi->clock_stop ?

						"disabled" : "enabled");

	DRM_DEBUG_KMS("Mode %s\n", intel_dsi->operation_mode ? "command" : "video");

	DRM_DEBUG_KMS("Pixel Format %d\n", intel_dsi->pixel_format);

	DRM_DEBUG_KMS("TLPX %d\n", intel_dsi->escape_clk_div);

	DRM_DEBUG_KMS("LP RX Timeout 0x%x\n", intel_dsi->lp_rx_timeout);

	DRM_DEBUG_KMS("Turnaround Timeout 0x%x\n", intel_dsi->turn_arnd_val);

	DRM_DEBUG_KMS("Init Count 0x%x\n", intel_dsi->init_count);

	DRM_DEBUG_KMS("HS to LP Count 0x%x\n", intel_dsi->hs_to_lp_count);

	DRM_DEBUG_KMS("LP Byte Clock %d\n", intel_dsi->lp_byte_clk);

	DRM_DEBUG_KMS("DBI BW Timer 0x%x\n", intel_dsi->bw_timer);

	DRM_DEBUG_KMS("LP to HS Clock Count 0x%x\n", intel_dsi->clk_lp_to_hs_count);

	DRM_DEBUG_KMS("HS to LP Clock Count 0x%x\n", intel_dsi->clk_hs_to_lp_count);

	DRM_DEBUG_KMS("BTA %s\n",

			intel_dsi->video_frmt_cfg_bits & DISABLE_VIDEO_BTA ?

			"disabled" : "enabled");



	/* delays in VBT are in unit of 100us, so need to convert

	 * here in ms

	 * Delay (100us) * 100 /1000 = Delay / 10 (ms) */

	intel_dsi->backlight_off_delay = pps->bl_disable_delay / 10;

	intel_dsi->backlight_on_delay = pps->bl_enable_delay / 10;

	intel_dsi->panel_on_delay = pps->panel_on_delay / 10;

	intel_dsi->panel_off_delay = pps->panel_off_delay / 10;

	intel_dsi->panel_pwr_cycle_delay = pps->panel_power_cycle_delay / 10;



	return true;

}



static int generic_mode_valid(struct intel_dsi_device *dsi,

		   struct drm_display_mode *mode)

{

	return MODE_OK;

}



static bool generic_mode_fixup(struct intel_dsi_device *dsi,

		    const struct drm_display_mode *mode,

		    struct drm_display_mode *adjusted_mode) {

	return true;

}



static void generic_panel_reset(struct intel_dsi_device *dsi)

{

	struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);

	struct drm_device *dev = intel_dsi->base.base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;



	char *sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_ASSERT_RESET];



	generic_exec_sequence(intel_dsi, sequence);

}



static void generic_disable_panel_power(struct intel_dsi_device *dsi)

{

	struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);

	struct drm_device *dev = intel_dsi->base.base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;



	char *sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET];



	generic_exec_sequence(intel_dsi, sequence);

}



static void generic_send_otp_cmds(struct intel_dsi_device *dsi)

{

	struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);

	struct drm_device *dev = intel_dsi->base.base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;



	char *sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];



	generic_exec_sequence(intel_dsi, sequence);

}



static void generic_enable(struct intel_dsi_device *dsi)

{

	struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);

	struct drm_device *dev = intel_dsi->base.base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;



	char *sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_DISPLAY_ON];



	generic_exec_sequence(intel_dsi, sequence);

}



static void generic_disable(struct intel_dsi_device *dsi)

{

	struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);

	struct drm_device *dev = intel_dsi->base.base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;



	char *sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_DISPLAY_OFF];



	generic_exec_sequence(intel_dsi, sequence);

}



static enum drm_connector_status generic_detect(struct intel_dsi_device *dsi)

{

	return connector_status_connected;

}



static bool generic_get_hw_state(struct intel_dsi_device *dev)

{

	return true;

}



static struct drm_display_mode *generic_get_modes(struct intel_dsi_device *dsi)

{

	struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);

	struct drm_device *dev = intel_dsi->base.base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;



	dev_priv->vbt.lfp_lvds_vbt_mode->type |= DRM_MODE_TYPE_PREFERRED;

	return dev_priv->vbt.lfp_lvds_vbt_mode;

}



static void generic_destroy(struct intel_dsi_device *dsi) { }



/* Callbacks. We might not need them all. */

struct intel_dsi_dev_ops vbt_generic_dsi_display_ops = {

	.init = generic_init,

	.mode_valid = generic_mode_valid,

	.mode_fixup = generic_mode_fixup,

	.panel_reset = generic_panel_reset,

	.disable_panel_power = generic_disable_panel_power,

	.send_otp_cmds = generic_send_otp_cmds,

	.enable = generic_enable,

	.disable = generic_disable,

	.detect = generic_detect,

	.get_hw_state = generic_get_hw_state,

	.get_modes = generic_get_modes,

	.destroy = generic_destroy,

};

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