[v2] drm/i915: Add support for Generic MIPI panel driver

Shobhit Kumar
2014-05-23T16:06:10Z

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: Shobhit Kumar <shobhit.kumar@intel.com>
---
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/intel_dsi.c | 5 +
drivers/gpu/drm/i915/intel_dsi.h | 2 +
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 589 +++++++++++++++++++++++++++++
4 files changed, 597 insertions(+)
create mode 100644 drivers/gpu/drm/i915/intel_dsi_panel_vbt.c

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 7b2f3be..cad1683 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -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 \
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 2525cdd..e73bec6 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -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)
diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h
index e3f4e91..31db33d 100644
--- a/drivers/gpu/drm/i915/intel_dsi.h
+++ b/drivers/gpu/drm/i915/intel_dsi.h
@@ -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 */
diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
new file mode 100644
index 0000000..21a0d34
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -0,0 +1,589 @@
+/*
+ * 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,
+};
--
1.8.3.2

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