From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/gpu/drm/mediatek/mtk_dsi.c | 626 +++++++++++++++++++++++++++++---------------------------
1 files changed, 329 insertions(+), 297 deletions(-)
diff --git a/kernel/drivers/gpu/drm/mediatek/mtk_dsi.c b/kernel/drivers/gpu/drm/mediatek/mtk_dsi.c
index 0dd317a..a6e71b7 100644
--- a/kernel/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/kernel/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -1,22 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2015 MediaTek Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
-#include <drm/drmP.h>
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_crtc_helper.h>
-#include <drm/drm_mipi_dsi.h>
-#include <drm/drm_panel.h>
-#include <drm/drm_of.h>
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/iopoll.h>
@@ -25,8 +11,19 @@
#include <linux/of_platform.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
+
#include <video/mipi_display.h>
#include <video/videomode.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_bridge_connector.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
#include "mtk_drm_ddp_comp.h"
@@ -45,6 +42,7 @@
#define DSI_CON_CTRL 0x10
#define DSI_RESET BIT(0)
#define DSI_EN BIT(1)
+#define DPHY_RESET BIT(2)
#define DSI_MODE_CTRL 0x14
#define MODE (3)
@@ -78,6 +76,7 @@
#define DSI_VBP_NL 0x24
#define DSI_VFP_NL 0x28
#define DSI_VACT_NL 0x2C
+#define DSI_SIZE_CON 0x38
#define DSI_HSA_WC 0x50
#define DSI_HBP_WC 0x54
#define DSI_HFP_WC 0x58
@@ -131,7 +130,10 @@
#define VM_CMD_EN BIT(0)
#define TS_VFP_EN BIT(5)
-#define DSI_CMDQ0 0x180
+#define DSI_SHADOW_DEBUG 0x190U
+#define FORCE_COMMIT BIT(0)
+#define BYPASS_SHADOW BIT(1)
+
#define CONFIG (0xff << 0)
#define SHORT_PACKET 0
#define LONG_PACKET 2
@@ -139,12 +141,6 @@
#define DATA_ID (0xff << 8)
#define DATA_0 (0xff << 16)
#define DATA_1 (0xff << 24)
-
-#define T_LPX 5
-#define T_HS_PREP 6
-#define T_HS_TRAIL 8
-#define T_HS_EXIT 7
-#define T_HS_ZERO 10
#define NS_TO_CYCLE(n, c) ((n) / (c) + (((n) % (c)) ? 1 : 0))
@@ -154,16 +150,41 @@
(type == MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM) || \
(type == MIPI_DSI_DCS_READ))
+struct mtk_phy_timing {
+ u32 lpx;
+ u32 da_hs_prepare;
+ u32 da_hs_zero;
+ u32 da_hs_trail;
+
+ u32 ta_go;
+ u32 ta_sure;
+ u32 ta_get;
+ u32 da_hs_exit;
+
+ u32 clk_hs_zero;
+ u32 clk_hs_trail;
+
+ u32 clk_hs_prepare;
+ u32 clk_hs_post;
+ u32 clk_hs_exit;
+};
+
struct phy;
+
+struct mtk_dsi_driver_data {
+ const u32 reg_cmdq_off;
+ bool has_shadow_ctl;
+ bool has_size_ctl;
+};
struct mtk_dsi {
struct mtk_ddp_comp ddp_comp;
struct device *dev;
struct mipi_dsi_host host;
struct drm_encoder encoder;
- struct drm_connector conn;
- struct drm_panel *panel;
- struct drm_bridge *bridge;
+ struct drm_bridge bridge;
+ struct drm_bridge *next_bridge;
+ struct drm_connector *connector;
struct phy *phy;
void __iomem *regs;
@@ -178,20 +199,18 @@
enum mipi_dsi_pixel_format format;
unsigned int lanes;
struct videomode vm;
+ struct mtk_phy_timing phy_timing;
int refcount;
bool enabled;
+ bool lanes_ready;
u32 irq_data;
wait_queue_head_t irq_wait_queue;
+ const struct mtk_dsi_driver_data *driver_data;
};
-static inline struct mtk_dsi *encoder_to_dsi(struct drm_encoder *e)
+static inline struct mtk_dsi *bridge_to_dsi(struct drm_bridge *b)
{
- return container_of(e, struct mtk_dsi, encoder);
-}
-
-static inline struct mtk_dsi *connector_to_dsi(struct drm_connector *c)
-{
- return container_of(c, struct mtk_dsi, conn);
+ return container_of(b, struct mtk_dsi, bridge);
}
static inline struct mtk_dsi *host_to_dsi(struct mipi_dsi_host *h)
@@ -209,18 +228,34 @@
static void mtk_dsi_phy_timconfig(struct mtk_dsi *dsi)
{
u32 timcon0, timcon1, timcon2, timcon3;
- u32 ui, cycle_time;
+ u32 data_rate_mhz = DIV_ROUND_UP(dsi->data_rate, 1000000);
+ struct mtk_phy_timing *timing = &dsi->phy_timing;
- ui = 1000 / dsi->data_rate + 0x01;
- cycle_time = 8000 / dsi->data_rate + 0x01;
+ timing->lpx = (60 * data_rate_mhz / (8 * 1000)) + 1;
+ timing->da_hs_prepare = (80 * data_rate_mhz + 4 * 1000) / 8000;
+ timing->da_hs_zero = (170 * data_rate_mhz + 10 * 1000) / 8000 + 1 -
+ timing->da_hs_prepare;
+ timing->da_hs_trail = timing->da_hs_prepare + 1;
- timcon0 = T_LPX | T_HS_PREP << 8 | T_HS_ZERO << 16 | T_HS_TRAIL << 24;
- timcon1 = 4 * T_LPX | (3 * T_LPX / 2) << 8 | 5 * T_LPX << 16 |
- T_HS_EXIT << 24;
- timcon2 = ((NS_TO_CYCLE(0x64, cycle_time) + 0xa) << 24) |
- (NS_TO_CYCLE(0x150, cycle_time) << 16);
- timcon3 = NS_TO_CYCLE(0x40, cycle_time) | (2 * T_LPX) << 16 |
- NS_TO_CYCLE(80 + 52 * ui, cycle_time) << 8;
+ timing->ta_go = 4 * timing->lpx - 2;
+ timing->ta_sure = timing->lpx + 2;
+ timing->ta_get = 4 * timing->lpx;
+ timing->da_hs_exit = 2 * timing->lpx + 1;
+
+ timing->clk_hs_prepare = 70 * data_rate_mhz / (8 * 1000);
+ timing->clk_hs_post = timing->clk_hs_prepare + 8;
+ timing->clk_hs_trail = timing->clk_hs_prepare;
+ timing->clk_hs_zero = timing->clk_hs_trail * 4;
+ timing->clk_hs_exit = 2 * timing->clk_hs_trail;
+
+ timcon0 = timing->lpx | timing->da_hs_prepare << 8 |
+ timing->da_hs_zero << 16 | timing->da_hs_trail << 24;
+ timcon1 = timing->ta_go | timing->ta_sure << 8 |
+ timing->ta_get << 16 | timing->da_hs_exit << 24;
+ timcon2 = 1 << 8 | timing->clk_hs_zero << 16 |
+ timing->clk_hs_trail << 24;
+ timcon3 = timing->clk_hs_prepare | timing->clk_hs_post << 8 |
+ timing->clk_hs_exit << 16;
writel(timcon0, dsi->regs + DSI_PHY_TIMECON0);
writel(timcon1, dsi->regs + DSI_PHY_TIMECON1);
@@ -242,6 +277,12 @@
{
mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_RESET, DSI_RESET);
mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_RESET, 0);
+}
+
+static void mtk_dsi_reset_dphy(struct mtk_dsi *dsi)
+{
+ mtk_dsi_mask(dsi, DSI_CON_CTRL, DPHY_RESET, DPHY_RESET);
+ mtk_dsi_mask(dsi, DSI_CON_CTRL, DPHY_RESET, 0);
}
static void mtk_dsi_clk_ulp_mode_enter(struct mtk_dsi *dsi)
@@ -272,10 +313,7 @@
static bool mtk_dsi_clk_hs_state(struct mtk_dsi *dsi)
{
- u32 tmp_reg1;
-
- tmp_reg1 = readl(dsi->regs + DSI_PHY_LCCON);
- return ((tmp_reg1 & LC_HS_TX_EN) == 1) ? true : false;
+ return readl(dsi->regs + DSI_PHY_LCCON) & LC_HS_TX_EN;
}
static void mtk_dsi_clk_hs_mode(struct mtk_dsi *dsi, bool enter)
@@ -407,7 +445,11 @@
u32 horizontal_sync_active_byte;
u32 horizontal_backporch_byte;
u32 horizontal_frontporch_byte;
- u32 dsi_tmp_buf_bpp;
+ u32 horizontal_front_back_byte;
+ u32 data_phy_cycles_byte;
+ u32 dsi_tmp_buf_bpp, data_phy_cycles;
+ u32 delta;
+ struct mtk_phy_timing *timing = &dsi->phy_timing;
struct videomode *vm = &dsi->vm;
@@ -421,16 +463,38 @@
writel(vm->vfront_porch, dsi->regs + DSI_VFP_NL);
writel(vm->vactive, dsi->regs + DSI_VACT_NL);
+ if (dsi->driver_data->has_size_ctl)
+ writel(vm->vactive << 16 | vm->hactive,
+ dsi->regs + DSI_SIZE_CON);
+
horizontal_sync_active_byte = (vm->hsync_len * dsi_tmp_buf_bpp - 10);
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
- horizontal_backporch_byte =
- (vm->hback_porch * dsi_tmp_buf_bpp - 10);
+ horizontal_backporch_byte = vm->hback_porch * dsi_tmp_buf_bpp - 10;
else
- horizontal_backporch_byte = ((vm->hback_porch + vm->hsync_len) *
- dsi_tmp_buf_bpp - 10);
+ horizontal_backporch_byte = (vm->hback_porch + vm->hsync_len) *
+ dsi_tmp_buf_bpp - 10;
- horizontal_frontporch_byte = (vm->hfront_porch * dsi_tmp_buf_bpp - 12);
+ data_phy_cycles = timing->lpx + timing->da_hs_prepare +
+ timing->da_hs_zero + timing->da_hs_exit + 3;
+
+ delta = dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST ? 18 : 12;
+
+ horizontal_frontporch_byte = vm->hfront_porch * dsi_tmp_buf_bpp;
+ horizontal_front_back_byte = horizontal_frontporch_byte + horizontal_backporch_byte;
+ data_phy_cycles_byte = data_phy_cycles * dsi->lanes + delta;
+
+ if (horizontal_front_back_byte > data_phy_cycles_byte) {
+ horizontal_frontporch_byte -= data_phy_cycles_byte *
+ horizontal_frontporch_byte /
+ horizontal_front_back_byte;
+
+ horizontal_backporch_byte -= data_phy_cycles_byte *
+ horizontal_backporch_byte /
+ horizontal_front_back_byte;
+ } else {
+ DRM_WARN("HFP + HBP less than d-phy, FPS will under 60Hz\n");
+ }
writel(horizontal_sync_active_byte, dsi->regs + DSI_HSA_WC);
writel(horizontal_backporch_byte, dsi->regs + DSI_HBP_WC);
@@ -528,10 +592,9 @@
static int mtk_dsi_poweron(struct mtk_dsi *dsi)
{
- struct device *dev = dsi->dev;
+ struct device *dev = dsi->host.dev;
int ret;
- u64 pixel_clock, total_bits;
- u32 htotal, htotal_bits, bit_per_pixel, overhead_cycles, overhead_bits;
+ u32 bit_per_pixel;
if (++dsi->refcount != 1)
return 0;
@@ -550,24 +613,8 @@
break;
}
- /**
- * htotal_time = htotal * byte_per_pixel / num_lanes
- * overhead_time = lpx + hs_prepare + hs_zero + hs_trail + hs_exit
- * mipi_ratio = (htotal_time + overhead_time) / htotal_time
- * data_rate = pixel_clock * bit_per_pixel * mipi_ratio / num_lanes;
- */
- pixel_clock = dsi->vm.pixelclock;
- htotal = dsi->vm.hactive + dsi->vm.hback_porch + dsi->vm.hfront_porch +
- dsi->vm.hsync_len;
- htotal_bits = htotal * bit_per_pixel;
-
- overhead_cycles = T_LPX + T_HS_PREP + T_HS_ZERO + T_HS_TRAIL +
- T_HS_EXIT;
- overhead_bits = overhead_cycles * dsi->lanes * 8;
- total_bits = htotal_bits + overhead_bits;
-
- dsi->data_rate = DIV_ROUND_UP_ULL(pixel_clock * total_bits,
- htotal * dsi->lanes);
+ dsi->data_rate = DIV_ROUND_UP_ULL(dsi->vm.pixelclock * bit_per_pixel,
+ dsi->lanes);
ret = clk_set_rate(dsi->hs_clk, dsi->data_rate);
if (ret < 0) {
@@ -590,29 +637,20 @@
}
mtk_dsi_enable(dsi);
+
+ if (dsi->driver_data->has_shadow_ctl)
+ writel(FORCE_COMMIT | BYPASS_SHADOW,
+ dsi->regs + DSI_SHADOW_DEBUG);
+
mtk_dsi_reset_engine(dsi);
mtk_dsi_phy_timconfig(dsi);
- mtk_dsi_rxtx_control(dsi);
mtk_dsi_ps_control_vact(dsi);
mtk_dsi_set_vm_cmd(dsi);
mtk_dsi_config_vdo_timing(dsi);
mtk_dsi_set_interrupt_enable(dsi);
- mtk_dsi_clk_ulp_mode_leave(dsi);
- mtk_dsi_lane0_ulp_mode_leave(dsi);
- mtk_dsi_clk_hs_mode(dsi, 0);
-
- if (dsi->panel) {
- if (drm_panel_prepare(dsi->panel)) {
- DRM_ERROR("failed to prepare the panel\n");
- goto err_disable_digital_clk;
- }
- }
-
return 0;
-err_disable_digital_clk:
- clk_disable_unprepare(dsi->digital_clk);
err_disable_engine_clk:
clk_disable_unprepare(dsi->engine_clk);
err_phy_power_off:
@@ -639,18 +677,12 @@
*/
mtk_dsi_stop(dsi);
- if (!mtk_dsi_switch_to_cmd_mode(dsi, VM_DONE_INT_FLAG, 500)) {
- if (dsi->panel) {
- if (drm_panel_unprepare(dsi->panel)) {
- DRM_ERROR("failed to unprepare the panel\n");
- return;
- }
- }
- }
-
+ mtk_dsi_switch_to_cmd_mode(dsi, VM_DONE_INT_FLAG, 500);
mtk_dsi_reset_engine(dsi);
mtk_dsi_lane0_ulp_mode_enter(dsi);
mtk_dsi_clk_ulp_mode_enter(dsi);
+ /* set the lane number as 0 to pull down mipi */
+ writel(0, dsi->regs + DSI_TXRX_CTRL);
mtk_dsi_disable(dsi);
@@ -658,39 +690,37 @@
clk_disable_unprepare(dsi->digital_clk);
phy_power_off(dsi->phy);
+
+ dsi->lanes_ready = false;
+}
+
+static void mtk_dsi_lane_ready(struct mtk_dsi *dsi)
+{
+ if (!dsi->lanes_ready) {
+ dsi->lanes_ready = true;
+ mtk_dsi_rxtx_control(dsi);
+ usleep_range(30, 100);
+ mtk_dsi_reset_dphy(dsi);
+ mtk_dsi_clk_ulp_mode_leave(dsi);
+ mtk_dsi_lane0_ulp_mode_leave(dsi);
+ mtk_dsi_clk_hs_mode(dsi, 0);
+ usleep_range(1000, 3000);
+ /* The reaction time after pulling up the mipi signal for dsi_rx */
+ }
}
static void mtk_output_dsi_enable(struct mtk_dsi *dsi)
{
- int ret;
-
if (dsi->enabled)
return;
- ret = mtk_dsi_poweron(dsi);
- if (ret < 0) {
- DRM_ERROR("failed to power on dsi\n");
- return;
- }
-
+ mtk_dsi_lane_ready(dsi);
mtk_dsi_set_mode(dsi);
mtk_dsi_clk_hs_mode(dsi, 1);
mtk_dsi_start(dsi);
- if (dsi->panel) {
- if (drm_panel_enable(dsi->panel)) {
- DRM_ERROR("failed to enable the panel\n");
- goto err_dsi_power_off;
- }
- }
-
dsi->enabled = true;
-
- return;
-err_dsi_power_off:
- mtk_dsi_stop(dsi);
- mtk_dsi_poweroff(dsi);
}
static void mtk_output_dsi_disable(struct mtk_dsi *dsi)
@@ -698,160 +728,77 @@
if (!dsi->enabled)
return;
- if (dsi->panel) {
- if (drm_panel_disable(dsi->panel)) {
- DRM_ERROR("failed to disable the panel\n");
- return;
- }
- }
-
- mtk_dsi_poweroff(dsi);
-
dsi->enabled = false;
}
-static void mtk_dsi_encoder_destroy(struct drm_encoder *encoder)
+static int mtk_dsi_bridge_attach(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
{
- drm_encoder_cleanup(encoder);
+ struct mtk_dsi *dsi = bridge_to_dsi(bridge);
+
+ /* Attach the panel or bridge to the dsi bridge */
+ return drm_bridge_attach(bridge->encoder, dsi->next_bridge,
+ &dsi->bridge, flags);
}
-static const struct drm_encoder_funcs mtk_dsi_encoder_funcs = {
- .destroy = mtk_dsi_encoder_destroy,
-};
-
-static bool mtk_dsi_encoder_mode_fixup(struct drm_encoder *encoder,
- const struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode)
+static void mtk_dsi_bridge_mode_set(struct drm_bridge *bridge,
+ const struct drm_display_mode *mode,
+ const struct drm_display_mode *adjusted)
{
- return true;
-}
-
-static void mtk_dsi_encoder_mode_set(struct drm_encoder *encoder,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted)
-{
- struct mtk_dsi *dsi = encoder_to_dsi(encoder);
+ struct mtk_dsi *dsi = bridge_to_dsi(bridge);
drm_display_mode_to_videomode(adjusted, &dsi->vm);
}
-static void mtk_dsi_encoder_disable(struct drm_encoder *encoder)
+static void mtk_dsi_bridge_atomic_disable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_bridge_state)
{
- struct mtk_dsi *dsi = encoder_to_dsi(encoder);
+ struct mtk_dsi *dsi = bridge_to_dsi(bridge);
mtk_output_dsi_disable(dsi);
}
-static void mtk_dsi_encoder_enable(struct drm_encoder *encoder)
+static void mtk_dsi_bridge_atomic_enable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_bridge_state)
{
- struct mtk_dsi *dsi = encoder_to_dsi(encoder);
+ struct mtk_dsi *dsi = bridge_to_dsi(bridge);
+
+ if (dsi->refcount == 0)
+ return;
mtk_output_dsi_enable(dsi);
}
-static int mtk_dsi_connector_get_modes(struct drm_connector *connector)
+static void mtk_dsi_bridge_atomic_pre_enable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_bridge_state)
{
- struct mtk_dsi *dsi = connector_to_dsi(connector);
-
- return drm_panel_get_modes(dsi->panel);
-}
-
-static const struct drm_encoder_helper_funcs mtk_dsi_encoder_helper_funcs = {
- .mode_fixup = mtk_dsi_encoder_mode_fixup,
- .mode_set = mtk_dsi_encoder_mode_set,
- .disable = mtk_dsi_encoder_disable,
- .enable = mtk_dsi_encoder_enable,
-};
-
-static const struct drm_connector_funcs mtk_dsi_connector_funcs = {
- .fill_modes = drm_helper_probe_single_connector_modes,
- .destroy = drm_connector_cleanup,
- .reset = drm_atomic_helper_connector_reset,
- .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static const struct drm_connector_helper_funcs
- mtk_dsi_connector_helper_funcs = {
- .get_modes = mtk_dsi_connector_get_modes,
-};
-
-static int mtk_dsi_create_connector(struct drm_device *drm, struct mtk_dsi *dsi)
-{
+ struct mtk_dsi *dsi = bridge_to_dsi(bridge);
int ret;
- ret = drm_connector_init(drm, &dsi->conn, &mtk_dsi_connector_funcs,
- DRM_MODE_CONNECTOR_DSI);
- if (ret) {
- DRM_ERROR("Failed to connector init to drm\n");
- return ret;
- }
-
- drm_connector_helper_add(&dsi->conn, &mtk_dsi_connector_helper_funcs);
-
- dsi->conn.dpms = DRM_MODE_DPMS_OFF;
- drm_connector_attach_encoder(&dsi->conn, &dsi->encoder);
-
- if (dsi->panel) {
- ret = drm_panel_attach(dsi->panel, &dsi->conn);
- if (ret) {
- DRM_ERROR("Failed to attach panel to drm\n");
- goto err_connector_cleanup;
- }
- }
-
- return 0;
-
-err_connector_cleanup:
- drm_connector_cleanup(&dsi->conn);
- return ret;
+ ret = mtk_dsi_poweron(dsi);
+ if (ret < 0)
+ DRM_ERROR("failed to power on dsi\n");
}
-static int mtk_dsi_create_conn_enc(struct drm_device *drm, struct mtk_dsi *dsi)
+static void mtk_dsi_bridge_atomic_post_disable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_bridge_state)
{
- int ret;
+ struct mtk_dsi *dsi = bridge_to_dsi(bridge);
- ret = drm_encoder_init(drm, &dsi->encoder, &mtk_dsi_encoder_funcs,
- DRM_MODE_ENCODER_DSI, NULL);
- if (ret) {
- DRM_ERROR("Failed to encoder init to drm\n");
- return ret;
- }
- drm_encoder_helper_add(&dsi->encoder, &mtk_dsi_encoder_helper_funcs);
-
- /*
- * Currently display data paths are statically assigned to a crtc each.
- * crtc 0 is OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0
- */
- dsi->encoder.possible_crtcs = 1;
-
- /* If there's a bridge, attach to it and let it create the connector */
- ret = drm_bridge_attach(&dsi->encoder, dsi->bridge, NULL);
- if (ret) {
- DRM_ERROR("Failed to attach bridge to drm\n");
-
- /* Otherwise create our own connector and attach to a panel */
- ret = mtk_dsi_create_connector(drm, dsi);
- if (ret)
- goto err_encoder_cleanup;
- }
-
- return 0;
-
-err_encoder_cleanup:
- drm_encoder_cleanup(&dsi->encoder);
- return ret;
+ mtk_dsi_poweroff(dsi);
}
-static void mtk_dsi_destroy_conn_enc(struct mtk_dsi *dsi)
-{
- drm_encoder_cleanup(&dsi->encoder);
- /* Skip connector cleanup if creation was delegated to the bridge */
- if (dsi->conn.dev)
- drm_connector_cleanup(&dsi->conn);
- if (dsi->panel)
- drm_panel_detach(dsi->panel);
-}
+static const struct drm_bridge_funcs mtk_dsi_bridge_funcs = {
+ .attach = mtk_dsi_bridge_attach,
+ .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+ .atomic_disable = mtk_dsi_bridge_atomic_disable,
+ .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+ .atomic_enable = mtk_dsi_bridge_atomic_enable,
+ .atomic_pre_enable = mtk_dsi_bridge_atomic_pre_enable,
+ .atomic_post_disable = mtk_dsi_bridge_atomic_post_disable,
+ .atomic_reset = drm_atomic_helper_bridge_reset,
+ .mode_set = mtk_dsi_bridge_mode_set,
+};
static void mtk_dsi_ddp_start(struct mtk_ddp_comp *comp)
{
@@ -880,20 +827,6 @@
dsi->lanes = device->lanes;
dsi->format = device->format;
dsi->mode_flags = device->mode_flags;
-
- if (dsi->conn.dev)
- drm_helper_hpd_irq_event(dsi->conn.dev);
-
- return 0;
-}
-
-static int mtk_dsi_host_detach(struct mipi_dsi_host *host,
- struct mipi_dsi_device *device)
-{
- struct mtk_dsi *dsi = host_to_dsi(host);
-
- if (dsi->conn.dev)
- drm_helper_hpd_irq_event(dsi->conn.dev);
return 0;
}
@@ -941,6 +874,7 @@
const char *tx_buf = msg->tx_buf;
u8 config, cmdq_size, cmdq_off, type = msg->type;
u32 reg_val, cmdq_mask, i;
+ u32 reg_cmdq_off = dsi->driver_data->reg_cmdq_off;
if (MTK_DSI_HOST_IS_READ(type))
config = BTA;
@@ -960,9 +894,11 @@
}
for (i = 0; i < msg->tx_len; i++)
- writeb(tx_buf[i], dsi->regs + DSI_CMDQ0 + cmdq_off + i);
+ mtk_dsi_mask(dsi, (reg_cmdq_off + cmdq_off + i) & (~0x3U),
+ (0xffUL << (((i + cmdq_off) & 3U) * 8U)),
+ tx_buf[i] << (((i + cmdq_off) & 3U) * 8U));
- mtk_dsi_mask(dsi, DSI_CMDQ0, cmdq_mask, reg_val);
+ mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val);
mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size);
}
@@ -988,24 +924,35 @@
u8 read_data[16];
void *src_addr;
u8 irq_flag = CMD_DONE_INT_FLAG;
+ u32 dsi_mode;
+ int ret;
- if (readl(dsi->regs + DSI_MODE_CTRL) & MODE) {
- DRM_ERROR("dsi engine is not command mode\n");
- return -EINVAL;
+ dsi_mode = readl(dsi->regs + DSI_MODE_CTRL);
+ if (dsi_mode & MODE) {
+ mtk_dsi_stop(dsi);
+ ret = mtk_dsi_switch_to_cmd_mode(dsi, VM_DONE_INT_FLAG, 500);
+ if (ret)
+ goto restore_dsi_mode;
}
if (MTK_DSI_HOST_IS_READ(msg->type))
irq_flag |= LPRX_RD_RDY_INT_FLAG;
- if (mtk_dsi_host_send_cmd(dsi, msg, irq_flag) < 0)
- return -ETIME;
+ mtk_dsi_lane_ready(dsi);
- if (!MTK_DSI_HOST_IS_READ(msg->type))
- return 0;
+ ret = mtk_dsi_host_send_cmd(dsi, msg, irq_flag);
+ if (ret)
+ goto restore_dsi_mode;
+
+ if (!MTK_DSI_HOST_IS_READ(msg->type)) {
+ recv_cnt = 0;
+ goto restore_dsi_mode;
+ }
if (!msg->rx_buf) {
DRM_ERROR("dsi receive buffer size may be NULL\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto restore_dsi_mode;
}
for (i = 0; i < 16; i++)
@@ -1030,14 +977,52 @@
DRM_INFO("dsi get %d byte data from the panel address(0x%x)\n",
recv_cnt, *((u8 *)(msg->tx_buf)));
- return recv_cnt;
+restore_dsi_mode:
+ if (dsi_mode & MODE) {
+ mtk_dsi_set_mode(dsi);
+ mtk_dsi_start(dsi);
+ }
+
+ return ret < 0 ? ret : recv_cnt;
}
static const struct mipi_dsi_host_ops mtk_dsi_ops = {
.attach = mtk_dsi_host_attach,
- .detach = mtk_dsi_host_detach,
.transfer = mtk_dsi_host_transfer,
};
+
+static int mtk_dsi_encoder_init(struct drm_device *drm, struct mtk_dsi *dsi)
+{
+ int ret;
+
+ ret = drm_simple_encoder_init(drm, &dsi->encoder,
+ DRM_MODE_ENCODER_DSI);
+ if (ret) {
+ DRM_ERROR("Failed to encoder init to drm\n");
+ return ret;
+ }
+
+ dsi->encoder.possible_crtcs = mtk_drm_find_possible_crtc_by_comp(drm, dsi->ddp_comp);
+
+ ret = drm_bridge_attach(&dsi->encoder, &dsi->bridge, NULL,
+ DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+ if (ret)
+ goto err_cleanup_encoder;
+
+ dsi->connector = drm_bridge_connector_init(drm, &dsi->encoder);
+ if (IS_ERR(dsi->connector)) {
+ DRM_ERROR("Unable to create bridge connector\n");
+ ret = PTR_ERR(dsi->connector);
+ goto err_cleanup_encoder;
+ }
+ drm_connector_attach_encoder(dsi->connector, &dsi->encoder);
+
+ return 0;
+
+err_cleanup_encoder:
+ drm_encoder_cleanup(&dsi->encoder);
+ return ret;
+}
static int mtk_dsi_bind(struct device *dev, struct device *master, void *data)
{
@@ -1052,23 +1037,13 @@
return ret;
}
- ret = mipi_dsi_host_register(&dsi->host);
- if (ret < 0) {
- dev_err(dev, "failed to register DSI host: %d\n", ret);
- goto err_ddp_comp_unregister;
- }
-
- ret = mtk_dsi_create_conn_enc(drm, dsi);
- if (ret) {
- DRM_ERROR("Encoder create failed with %d\n", ret);
+ ret = mtk_dsi_encoder_init(drm, dsi);
+ if (ret)
goto err_unregister;
- }
return 0;
err_unregister:
- mipi_dsi_host_unregister(&dsi->host);
-err_ddp_comp_unregister:
mtk_ddp_comp_unregister(drm, &dsi->ddp_comp);
return ret;
}
@@ -1079,8 +1054,7 @@
struct drm_device *drm = data;
struct mtk_dsi *dsi = dev_get_drvdata(dev);
- mtk_dsi_destroy_conn_enc(dsi);
- mipi_dsi_host_unregister(&dsi->host);
+ drm_encoder_cleanup(&dsi->encoder);
mtk_ddp_comp_unregister(drm, &dsi->ddp_comp);
}
@@ -1093,6 +1067,7 @@
{
struct mtk_dsi *dsi;
struct device *dev = &pdev->dev;
+ struct drm_panel *panel;
struct resource *regs;
int irq_num;
int comp_id;
@@ -1104,31 +1079,50 @@
dsi->host.ops = &mtk_dsi_ops;
dsi->host.dev = dev;
+ ret = mipi_dsi_host_register(&dsi->host);
+ if (ret < 0) {
+ dev_err(dev, "failed to register DSI host: %d\n", ret);
+ return ret;
+ }
ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
- &dsi->panel, &dsi->bridge);
+ &panel, &dsi->next_bridge);
if (ret)
- return ret;
+ goto err_unregister_host;
+
+ if (panel) {
+ dsi->next_bridge = devm_drm_panel_bridge_add(dev, panel);
+ if (IS_ERR(dsi->next_bridge)) {
+ ret = PTR_ERR(dsi->next_bridge);
+ goto err_unregister_host;
+ }
+ }
+
+ dsi->driver_data = of_device_get_match_data(dev);
dsi->engine_clk = devm_clk_get(dev, "engine");
if (IS_ERR(dsi->engine_clk)) {
ret = PTR_ERR(dsi->engine_clk);
- dev_err(dev, "Failed to get engine clock: %d\n", ret);
- return ret;
+
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to get engine clock: %d\n", ret);
+ goto err_unregister_host;
}
dsi->digital_clk = devm_clk_get(dev, "digital");
if (IS_ERR(dsi->digital_clk)) {
ret = PTR_ERR(dsi->digital_clk);
- dev_err(dev, "Failed to get digital clock: %d\n", ret);
- return ret;
+
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to get digital clock: %d\n", ret);
+ goto err_unregister_host;
}
dsi->hs_clk = devm_clk_get(dev, "hs");
if (IS_ERR(dsi->hs_clk)) {
ret = PTR_ERR(dsi->hs_clk);
dev_err(dev, "Failed to get hs clock: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1136,33 +1130,35 @@
if (IS_ERR(dsi->regs)) {
ret = PTR_ERR(dsi->regs);
dev_err(dev, "Failed to ioremap memory: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
dsi->phy = devm_phy_get(dev, "dphy");
if (IS_ERR(dsi->phy)) {
ret = PTR_ERR(dsi->phy);
dev_err(dev, "Failed to get MIPI-DPHY: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DSI);
if (comp_id < 0) {
dev_err(dev, "Failed to identify by alias: %d\n", comp_id);
- return comp_id;
+ ret = comp_id;
+ goto err_unregister_host;
}
ret = mtk_ddp_comp_init(dev, dev->of_node, &dsi->ddp_comp, comp_id,
&mtk_dsi_funcs);
if (ret) {
dev_err(dev, "Failed to initialize component: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
irq_num = platform_get_irq(pdev, 0);
if (irq_num < 0) {
- dev_err(&pdev->dev, "failed to request dsi irq resource\n");
- return -EPROBE_DEFER;
+ dev_err(&pdev->dev, "failed to get dsi irq_num: %d\n", irq_num);
+ ret = irq_num;
+ goto err_unregister_host;
}
irq_set_status_flags(irq_num, IRQ_TYPE_LEVEL_LOW);
@@ -1170,14 +1166,30 @@
IRQF_TRIGGER_LOW, dev_name(&pdev->dev), dsi);
if (ret) {
dev_err(&pdev->dev, "failed to request mediatek dsi irq\n");
- return -EPROBE_DEFER;
+ goto err_unregister_host;
}
init_waitqueue_head(&dsi->irq_wait_queue);
platform_set_drvdata(pdev, dsi);
- return component_add(&pdev->dev, &mtk_dsi_component_ops);
+ dsi->bridge.funcs = &mtk_dsi_bridge_funcs;
+ dsi->bridge.of_node = dev->of_node;
+ dsi->bridge.type = DRM_MODE_CONNECTOR_DSI;
+
+ drm_bridge_add(&dsi->bridge);
+
+ ret = component_add(&pdev->dev, &mtk_dsi_component_ops);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to add component: %d\n", ret);
+ goto err_unregister_host;
+ }
+
+ return 0;
+
+err_unregister_host:
+ mipi_dsi_host_unregister(&dsi->host);
+ return ret;
}
static int mtk_dsi_remove(struct platform_device *pdev)
@@ -1185,14 +1197,34 @@
struct mtk_dsi *dsi = platform_get_drvdata(pdev);
mtk_output_dsi_disable(dsi);
+ drm_bridge_remove(&dsi->bridge);
component_del(&pdev->dev, &mtk_dsi_component_ops);
+ mipi_dsi_host_unregister(&dsi->host);
return 0;
}
+static const struct mtk_dsi_driver_data mt8173_dsi_driver_data = {
+ .reg_cmdq_off = 0x200,
+};
+
+static const struct mtk_dsi_driver_data mt2701_dsi_driver_data = {
+ .reg_cmdq_off = 0x180,
+};
+
+static const struct mtk_dsi_driver_data mt8183_dsi_driver_data = {
+ .reg_cmdq_off = 0x200,
+ .has_shadow_ctl = true,
+ .has_size_ctl = true,
+};
+
static const struct of_device_id mtk_dsi_of_match[] = {
- { .compatible = "mediatek,mt2701-dsi" },
- { .compatible = "mediatek,mt8173-dsi" },
+ { .compatible = "mediatek,mt2701-dsi",
+ .data = &mt2701_dsi_driver_data },
+ { .compatible = "mediatek,mt8173-dsi",
+ .data = &mt8173_dsi_driver_data },
+ { .compatible = "mediatek,mt8183-dsi",
+ .data = &mt8183_dsi_driver_data },
{ },
};
--
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