mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 01:36:41 +07:00
515ba6a59c
Do not try to dereference dpi if it is NULL. Since dpi can never be NULL when mtk_dpi_set_display_mode() is called, remove the message. Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
765 lines
19 KiB
C
765 lines
19 KiB
C
/*
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* Copyright (c) 2014 MediaTek Inc.
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* Author: Jie Qiu <jie.qiu@mediatek.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include <linux/kernel.h>
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#include <linux/component.h>
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#include <linux/platform_device.h>
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#include <linux/of.h>
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#include <linux/of_graph.h>
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#include <linux/interrupt.h>
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#include <linux/types.h>
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#include <linux/clk.h>
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#include "mtk_dpi_regs.h"
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#include "mtk_drm_ddp_comp.h"
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enum mtk_dpi_out_bit_num {
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MTK_DPI_OUT_BIT_NUM_8BITS,
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MTK_DPI_OUT_BIT_NUM_10BITS,
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MTK_DPI_OUT_BIT_NUM_12BITS,
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MTK_DPI_OUT_BIT_NUM_16BITS
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};
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enum mtk_dpi_out_yc_map {
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MTK_DPI_OUT_YC_MAP_RGB,
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MTK_DPI_OUT_YC_MAP_CYCY,
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MTK_DPI_OUT_YC_MAP_YCYC,
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MTK_DPI_OUT_YC_MAP_CY,
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MTK_DPI_OUT_YC_MAP_YC
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};
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enum mtk_dpi_out_channel_swap {
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MTK_DPI_OUT_CHANNEL_SWAP_RGB,
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MTK_DPI_OUT_CHANNEL_SWAP_GBR,
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MTK_DPI_OUT_CHANNEL_SWAP_BRG,
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MTK_DPI_OUT_CHANNEL_SWAP_RBG,
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MTK_DPI_OUT_CHANNEL_SWAP_GRB,
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MTK_DPI_OUT_CHANNEL_SWAP_BGR
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};
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enum mtk_dpi_out_color_format {
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MTK_DPI_COLOR_FORMAT_RGB,
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MTK_DPI_COLOR_FORMAT_RGB_FULL,
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MTK_DPI_COLOR_FORMAT_YCBCR_444,
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MTK_DPI_COLOR_FORMAT_YCBCR_422,
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MTK_DPI_COLOR_FORMAT_XV_YCC,
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MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL,
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MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL
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};
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struct mtk_dpi {
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struct mtk_ddp_comp ddp_comp;
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struct drm_encoder encoder;
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void __iomem *regs;
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struct device *dev;
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struct clk *engine_clk;
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struct clk *pixel_clk;
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struct clk *tvd_clk;
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int irq;
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struct drm_display_mode mode;
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enum mtk_dpi_out_color_format color_format;
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enum mtk_dpi_out_yc_map yc_map;
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enum mtk_dpi_out_bit_num bit_num;
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enum mtk_dpi_out_channel_swap channel_swap;
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bool power_sta;
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u8 power_ctl;
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};
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static inline struct mtk_dpi *mtk_dpi_from_encoder(struct drm_encoder *e)
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{
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return container_of(e, struct mtk_dpi, encoder);
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}
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enum mtk_dpi_polarity {
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MTK_DPI_POLARITY_RISING,
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MTK_DPI_POLARITY_FALLING,
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};
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enum mtk_dpi_power_ctl {
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DPI_POWER_START = BIT(0),
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DPI_POWER_ENABLE = BIT(1),
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};
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struct mtk_dpi_polarities {
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enum mtk_dpi_polarity de_pol;
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enum mtk_dpi_polarity ck_pol;
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enum mtk_dpi_polarity hsync_pol;
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enum mtk_dpi_polarity vsync_pol;
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};
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struct mtk_dpi_sync_param {
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u32 sync_width;
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u32 front_porch;
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u32 back_porch;
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bool shift_half_line;
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};
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struct mtk_dpi_yc_limit {
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u16 y_top;
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u16 y_bottom;
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u16 c_top;
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u16 c_bottom;
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};
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static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)
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{
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u32 tmp = readl(dpi->regs + offset) & ~mask;
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tmp |= (val & mask);
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writel(tmp, dpi->regs + offset);
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}
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static void mtk_dpi_sw_reset(struct mtk_dpi *dpi, bool reset)
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{
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mtk_dpi_mask(dpi, DPI_RET, reset ? RST : 0, RST);
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}
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static void mtk_dpi_enable(struct mtk_dpi *dpi)
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{
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mtk_dpi_mask(dpi, DPI_EN, EN, EN);
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}
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static void mtk_dpi_disable(struct mtk_dpi *dpi)
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{
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mtk_dpi_mask(dpi, DPI_EN, 0, EN);
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}
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static void mtk_dpi_config_hsync(struct mtk_dpi *dpi,
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struct mtk_dpi_sync_param *sync)
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{
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mtk_dpi_mask(dpi, DPI_TGEN_HWIDTH,
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sync->sync_width << HPW, HPW_MASK);
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mtk_dpi_mask(dpi, DPI_TGEN_HPORCH,
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sync->back_porch << HBP, HBP_MASK);
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mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->front_porch << HFP,
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HFP_MASK);
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}
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static void mtk_dpi_config_vsync(struct mtk_dpi *dpi,
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struct mtk_dpi_sync_param *sync,
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u32 width_addr, u32 porch_addr)
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{
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mtk_dpi_mask(dpi, width_addr,
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sync->sync_width << VSYNC_WIDTH_SHIFT,
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VSYNC_WIDTH_MASK);
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mtk_dpi_mask(dpi, width_addr,
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sync->shift_half_line << VSYNC_HALF_LINE_SHIFT,
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VSYNC_HALF_LINE_MASK);
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mtk_dpi_mask(dpi, porch_addr,
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sync->back_porch << VSYNC_BACK_PORCH_SHIFT,
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VSYNC_BACK_PORCH_MASK);
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mtk_dpi_mask(dpi, porch_addr,
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sync->front_porch << VSYNC_FRONT_PORCH_SHIFT,
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VSYNC_FRONT_PORCH_MASK);
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}
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static void mtk_dpi_config_vsync_lodd(struct mtk_dpi *dpi,
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struct mtk_dpi_sync_param *sync)
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{
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mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH, DPI_TGEN_VPORCH);
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}
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static void mtk_dpi_config_vsync_leven(struct mtk_dpi *dpi,
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struct mtk_dpi_sync_param *sync)
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{
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mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_LEVEN,
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DPI_TGEN_VPORCH_LEVEN);
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}
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static void mtk_dpi_config_vsync_rodd(struct mtk_dpi *dpi,
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struct mtk_dpi_sync_param *sync)
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{
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mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_RODD,
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DPI_TGEN_VPORCH_RODD);
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}
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static void mtk_dpi_config_vsync_reven(struct mtk_dpi *dpi,
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struct mtk_dpi_sync_param *sync)
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{
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mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_REVEN,
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DPI_TGEN_VPORCH_REVEN);
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}
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static void mtk_dpi_config_pol(struct mtk_dpi *dpi,
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struct mtk_dpi_polarities *dpi_pol)
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{
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unsigned int pol;
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pol = (dpi_pol->ck_pol == MTK_DPI_POLARITY_RISING ? 0 : CK_POL) |
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(dpi_pol->de_pol == MTK_DPI_POLARITY_RISING ? 0 : DE_POL) |
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(dpi_pol->hsync_pol == MTK_DPI_POLARITY_RISING ? 0 : HSYNC_POL) |
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(dpi_pol->vsync_pol == MTK_DPI_POLARITY_RISING ? 0 : VSYNC_POL);
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mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, pol,
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CK_POL | DE_POL | HSYNC_POL | VSYNC_POL);
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}
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static void mtk_dpi_config_3d(struct mtk_dpi *dpi, bool en_3d)
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{
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mtk_dpi_mask(dpi, DPI_CON, en_3d ? TDFP_EN : 0, TDFP_EN);
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}
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static void mtk_dpi_config_interface(struct mtk_dpi *dpi, bool inter)
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{
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mtk_dpi_mask(dpi, DPI_CON, inter ? INTL_EN : 0, INTL_EN);
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}
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static void mtk_dpi_config_fb_size(struct mtk_dpi *dpi, u32 width, u32 height)
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{
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mtk_dpi_mask(dpi, DPI_SIZE, width << HSIZE, HSIZE_MASK);
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mtk_dpi_mask(dpi, DPI_SIZE, height << VSIZE, VSIZE_MASK);
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}
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static void mtk_dpi_config_channel_limit(struct mtk_dpi *dpi,
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struct mtk_dpi_yc_limit *limit)
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{
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mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_bottom << Y_LIMINT_BOT,
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Y_LIMINT_BOT_MASK);
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mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_top << Y_LIMINT_TOP,
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Y_LIMINT_TOP_MASK);
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mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_bottom << C_LIMIT_BOT,
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C_LIMIT_BOT_MASK);
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mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_top << C_LIMIT_TOP,
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C_LIMIT_TOP_MASK);
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}
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static void mtk_dpi_config_bit_num(struct mtk_dpi *dpi,
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enum mtk_dpi_out_bit_num num)
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{
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u32 val;
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switch (num) {
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case MTK_DPI_OUT_BIT_NUM_8BITS:
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val = OUT_BIT_8;
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break;
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case MTK_DPI_OUT_BIT_NUM_10BITS:
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val = OUT_BIT_10;
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break;
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case MTK_DPI_OUT_BIT_NUM_12BITS:
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val = OUT_BIT_12;
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break;
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case MTK_DPI_OUT_BIT_NUM_16BITS:
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val = OUT_BIT_16;
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break;
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default:
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val = OUT_BIT_8;
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break;
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}
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mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << OUT_BIT,
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OUT_BIT_MASK);
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}
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static void mtk_dpi_config_yc_map(struct mtk_dpi *dpi,
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enum mtk_dpi_out_yc_map map)
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{
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u32 val;
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switch (map) {
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case MTK_DPI_OUT_YC_MAP_RGB:
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val = YC_MAP_RGB;
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break;
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case MTK_DPI_OUT_YC_MAP_CYCY:
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val = YC_MAP_CYCY;
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break;
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case MTK_DPI_OUT_YC_MAP_YCYC:
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val = YC_MAP_YCYC;
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break;
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case MTK_DPI_OUT_YC_MAP_CY:
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val = YC_MAP_CY;
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break;
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case MTK_DPI_OUT_YC_MAP_YC:
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val = YC_MAP_YC;
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break;
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default:
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val = YC_MAP_RGB;
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break;
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}
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mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << YC_MAP, YC_MAP_MASK);
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}
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static void mtk_dpi_config_channel_swap(struct mtk_dpi *dpi,
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enum mtk_dpi_out_channel_swap swap)
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{
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u32 val;
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switch (swap) {
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case MTK_DPI_OUT_CHANNEL_SWAP_RGB:
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val = SWAP_RGB;
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break;
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case MTK_DPI_OUT_CHANNEL_SWAP_GBR:
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val = SWAP_GBR;
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break;
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case MTK_DPI_OUT_CHANNEL_SWAP_BRG:
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val = SWAP_BRG;
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break;
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case MTK_DPI_OUT_CHANNEL_SWAP_RBG:
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val = SWAP_RBG;
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break;
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case MTK_DPI_OUT_CHANNEL_SWAP_GRB:
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val = SWAP_GRB;
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break;
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case MTK_DPI_OUT_CHANNEL_SWAP_BGR:
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val = SWAP_BGR;
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break;
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default:
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val = SWAP_RGB;
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break;
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}
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mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << CH_SWAP, CH_SWAP_MASK);
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}
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static void mtk_dpi_config_yuv422_enable(struct mtk_dpi *dpi, bool enable)
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{
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mtk_dpi_mask(dpi, DPI_CON, enable ? YUV422_EN : 0, YUV422_EN);
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}
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static void mtk_dpi_config_csc_enable(struct mtk_dpi *dpi, bool enable)
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{
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mtk_dpi_mask(dpi, DPI_CON, enable ? CSC_ENABLE : 0, CSC_ENABLE);
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}
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static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable)
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{
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mtk_dpi_mask(dpi, DPI_CON, enable ? IN_RB_SWAP : 0, IN_RB_SWAP);
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}
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static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)
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{
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mtk_dpi_mask(dpi, DPI_H_FRE_CON, H_FRE_2N, H_FRE_2N);
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}
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static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
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enum mtk_dpi_out_color_format format)
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{
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if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_444) ||
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(format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
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mtk_dpi_config_yuv422_enable(dpi, false);
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mtk_dpi_config_csc_enable(dpi, true);
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mtk_dpi_config_swap_input(dpi, false);
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mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_BGR);
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} else if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_422) ||
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(format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
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mtk_dpi_config_yuv422_enable(dpi, true);
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mtk_dpi_config_csc_enable(dpi, true);
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mtk_dpi_config_swap_input(dpi, true);
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mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
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} else {
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mtk_dpi_config_yuv422_enable(dpi, false);
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mtk_dpi_config_csc_enable(dpi, false);
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mtk_dpi_config_swap_input(dpi, false);
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mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
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}
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}
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static void mtk_dpi_power_off(struct mtk_dpi *dpi, enum mtk_dpi_power_ctl pctl)
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{
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dpi->power_ctl &= ~pctl;
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if ((dpi->power_ctl & DPI_POWER_START) ||
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(dpi->power_ctl & DPI_POWER_ENABLE))
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return;
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if (!dpi->power_sta)
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return;
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mtk_dpi_disable(dpi);
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clk_disable_unprepare(dpi->pixel_clk);
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clk_disable_unprepare(dpi->engine_clk);
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dpi->power_sta = false;
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}
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static int mtk_dpi_power_on(struct mtk_dpi *dpi, enum mtk_dpi_power_ctl pctl)
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{
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int ret;
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dpi->power_ctl |= pctl;
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if (!(dpi->power_ctl & DPI_POWER_START) &&
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!(dpi->power_ctl & DPI_POWER_ENABLE))
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return 0;
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if (dpi->power_sta)
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return 0;
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ret = clk_prepare_enable(dpi->engine_clk);
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if (ret) {
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dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret);
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goto err_eng;
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}
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ret = clk_prepare_enable(dpi->pixel_clk);
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if (ret) {
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dev_err(dpi->dev, "Failed to enable pixel clock: %d\n", ret);
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goto err_pixel;
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}
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mtk_dpi_enable(dpi);
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dpi->power_sta = true;
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return 0;
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err_pixel:
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clk_disable_unprepare(dpi->engine_clk);
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err_eng:
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dpi->power_ctl &= ~pctl;
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return ret;
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}
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static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
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struct drm_display_mode *mode)
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{
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struct mtk_dpi_yc_limit limit;
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struct mtk_dpi_polarities dpi_pol;
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struct mtk_dpi_sync_param hsync;
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struct mtk_dpi_sync_param vsync_lodd = { 0 };
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struct mtk_dpi_sync_param vsync_leven = { 0 };
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struct mtk_dpi_sync_param vsync_rodd = { 0 };
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struct mtk_dpi_sync_param vsync_reven = { 0 };
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unsigned long pix_rate;
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unsigned long pll_rate;
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unsigned int factor;
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pix_rate = 1000UL * mode->clock;
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if (mode->clock <= 74000)
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factor = 8 * 3;
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else
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factor = 4 * 3;
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pll_rate = pix_rate * factor;
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dev_dbg(dpi->dev, "Want PLL %lu Hz, pixel clock %lu Hz\n",
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pll_rate, pix_rate);
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clk_set_rate(dpi->tvd_clk, pll_rate);
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|
pll_rate = clk_get_rate(dpi->tvd_clk);
|
|
|
|
pix_rate = pll_rate / factor;
|
|
clk_set_rate(dpi->pixel_clk, pix_rate);
|
|
pix_rate = clk_get_rate(dpi->pixel_clk);
|
|
|
|
dev_dbg(dpi->dev, "Got PLL %lu Hz, pixel clock %lu Hz\n",
|
|
pll_rate, pix_rate);
|
|
|
|
limit.c_bottom = 0x0010;
|
|
limit.c_top = 0x0FE0;
|
|
limit.y_bottom = 0x0010;
|
|
limit.y_top = 0x0FE0;
|
|
|
|
dpi_pol.ck_pol = MTK_DPI_POLARITY_FALLING;
|
|
dpi_pol.de_pol = MTK_DPI_POLARITY_RISING;
|
|
dpi_pol.hsync_pol = mode->flags & DRM_MODE_FLAG_PHSYNC ?
|
|
MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
|
|
dpi_pol.vsync_pol = mode->flags & DRM_MODE_FLAG_PVSYNC ?
|
|
MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
|
|
|
|
hsync.sync_width = mode->hsync_end - mode->hsync_start;
|
|
hsync.back_porch = mode->htotal - mode->hsync_end;
|
|
hsync.front_porch = mode->hsync_start - mode->hdisplay;
|
|
hsync.shift_half_line = false;
|
|
|
|
vsync_lodd.sync_width = mode->vsync_end - mode->vsync_start;
|
|
vsync_lodd.back_porch = mode->vtotal - mode->vsync_end;
|
|
vsync_lodd.front_porch = mode->vsync_start - mode->vdisplay;
|
|
vsync_lodd.shift_half_line = false;
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_INTERLACE &&
|
|
mode->flags & DRM_MODE_FLAG_3D_MASK) {
|
|
vsync_leven = vsync_lodd;
|
|
vsync_rodd = vsync_lodd;
|
|
vsync_reven = vsync_lodd;
|
|
vsync_leven.shift_half_line = true;
|
|
vsync_reven.shift_half_line = true;
|
|
} else if (mode->flags & DRM_MODE_FLAG_INTERLACE &&
|
|
!(mode->flags & DRM_MODE_FLAG_3D_MASK)) {
|
|
vsync_leven = vsync_lodd;
|
|
vsync_leven.shift_half_line = true;
|
|
} else if (!(mode->flags & DRM_MODE_FLAG_INTERLACE) &&
|
|
mode->flags & DRM_MODE_FLAG_3D_MASK) {
|
|
vsync_rodd = vsync_lodd;
|
|
}
|
|
mtk_dpi_sw_reset(dpi, true);
|
|
mtk_dpi_config_pol(dpi, &dpi_pol);
|
|
|
|
mtk_dpi_config_hsync(dpi, &hsync);
|
|
mtk_dpi_config_vsync_lodd(dpi, &vsync_lodd);
|
|
mtk_dpi_config_vsync_rodd(dpi, &vsync_rodd);
|
|
mtk_dpi_config_vsync_leven(dpi, &vsync_leven);
|
|
mtk_dpi_config_vsync_reven(dpi, &vsync_reven);
|
|
|
|
mtk_dpi_config_3d(dpi, !!(mode->flags & DRM_MODE_FLAG_3D_MASK));
|
|
mtk_dpi_config_interface(dpi, !!(mode->flags &
|
|
DRM_MODE_FLAG_INTERLACE));
|
|
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
|
|
mtk_dpi_config_fb_size(dpi, mode->hdisplay, mode->vdisplay / 2);
|
|
else
|
|
mtk_dpi_config_fb_size(dpi, mode->hdisplay, mode->vdisplay);
|
|
|
|
mtk_dpi_config_channel_limit(dpi, &limit);
|
|
mtk_dpi_config_bit_num(dpi, dpi->bit_num);
|
|
mtk_dpi_config_channel_swap(dpi, dpi->channel_swap);
|
|
mtk_dpi_config_yc_map(dpi, dpi->yc_map);
|
|
mtk_dpi_config_color_format(dpi, dpi->color_format);
|
|
mtk_dpi_config_2n_h_fre(dpi);
|
|
mtk_dpi_sw_reset(dpi, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mtk_dpi_encoder_destroy(struct drm_encoder *encoder)
|
|
{
|
|
drm_encoder_cleanup(encoder);
|
|
}
|
|
|
|
static const struct drm_encoder_funcs mtk_dpi_encoder_funcs = {
|
|
.destroy = mtk_dpi_encoder_destroy,
|
|
};
|
|
|
|
static bool mtk_dpi_encoder_mode_fixup(struct drm_encoder *encoder,
|
|
const struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void mtk_dpi_encoder_mode_set(struct drm_encoder *encoder,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
struct mtk_dpi *dpi = mtk_dpi_from_encoder(encoder);
|
|
|
|
drm_mode_copy(&dpi->mode, adjusted_mode);
|
|
}
|
|
|
|
static void mtk_dpi_encoder_disable(struct drm_encoder *encoder)
|
|
{
|
|
struct mtk_dpi *dpi = mtk_dpi_from_encoder(encoder);
|
|
|
|
mtk_dpi_power_off(dpi, DPI_POWER_ENABLE);
|
|
}
|
|
|
|
static void mtk_dpi_encoder_enable(struct drm_encoder *encoder)
|
|
{
|
|
struct mtk_dpi *dpi = mtk_dpi_from_encoder(encoder);
|
|
|
|
mtk_dpi_power_on(dpi, DPI_POWER_ENABLE);
|
|
mtk_dpi_set_display_mode(dpi, &dpi->mode);
|
|
}
|
|
|
|
static int mtk_dpi_atomic_check(struct drm_encoder *encoder,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_connector_state *conn_state)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static const struct drm_encoder_helper_funcs mtk_dpi_encoder_helper_funcs = {
|
|
.mode_fixup = mtk_dpi_encoder_mode_fixup,
|
|
.mode_set = mtk_dpi_encoder_mode_set,
|
|
.disable = mtk_dpi_encoder_disable,
|
|
.enable = mtk_dpi_encoder_enable,
|
|
.atomic_check = mtk_dpi_atomic_check,
|
|
};
|
|
|
|
static void mtk_dpi_start(struct mtk_ddp_comp *comp)
|
|
{
|
|
struct mtk_dpi *dpi = container_of(comp, struct mtk_dpi, ddp_comp);
|
|
|
|
mtk_dpi_power_on(dpi, DPI_POWER_START);
|
|
}
|
|
|
|
static void mtk_dpi_stop(struct mtk_ddp_comp *comp)
|
|
{
|
|
struct mtk_dpi *dpi = container_of(comp, struct mtk_dpi, ddp_comp);
|
|
|
|
mtk_dpi_power_off(dpi, DPI_POWER_START);
|
|
}
|
|
|
|
static const struct mtk_ddp_comp_funcs mtk_dpi_funcs = {
|
|
.start = mtk_dpi_start,
|
|
.stop = mtk_dpi_stop,
|
|
};
|
|
|
|
static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
|
|
{
|
|
struct mtk_dpi *dpi = dev_get_drvdata(dev);
|
|
struct drm_device *drm_dev = data;
|
|
int ret;
|
|
|
|
ret = mtk_ddp_comp_register(drm_dev, &dpi->ddp_comp);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to register component %s: %d\n",
|
|
dev->of_node->full_name, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = drm_encoder_init(drm_dev, &dpi->encoder, &mtk_dpi_encoder_funcs,
|
|
DRM_MODE_ENCODER_TMDS, NULL);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to initialize decoder: %d\n", ret);
|
|
goto err_unregister;
|
|
}
|
|
drm_encoder_helper_add(&dpi->encoder, &mtk_dpi_encoder_helper_funcs);
|
|
|
|
/* Currently DPI0 is fixed to be driven by OVL1 */
|
|
dpi->encoder.possible_crtcs = BIT(1);
|
|
|
|
dpi->encoder.bridge->encoder = &dpi->encoder;
|
|
ret = drm_bridge_attach(dpi->encoder.dev, dpi->encoder.bridge);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to attach bridge: %d\n", ret);
|
|
goto err_cleanup;
|
|
}
|
|
|
|
dpi->bit_num = MTK_DPI_OUT_BIT_NUM_8BITS;
|
|
dpi->channel_swap = MTK_DPI_OUT_CHANNEL_SWAP_RGB;
|
|
dpi->yc_map = MTK_DPI_OUT_YC_MAP_RGB;
|
|
dpi->color_format = MTK_DPI_COLOR_FORMAT_RGB;
|
|
|
|
return 0;
|
|
|
|
err_cleanup:
|
|
drm_encoder_cleanup(&dpi->encoder);
|
|
err_unregister:
|
|
mtk_ddp_comp_unregister(drm_dev, &dpi->ddp_comp);
|
|
return ret;
|
|
}
|
|
|
|
static void mtk_dpi_unbind(struct device *dev, struct device *master,
|
|
void *data)
|
|
{
|
|
struct mtk_dpi *dpi = dev_get_drvdata(dev);
|
|
struct drm_device *drm_dev = data;
|
|
|
|
drm_encoder_cleanup(&dpi->encoder);
|
|
mtk_ddp_comp_unregister(drm_dev, &dpi->ddp_comp);
|
|
}
|
|
|
|
static const struct component_ops mtk_dpi_component_ops = {
|
|
.bind = mtk_dpi_bind,
|
|
.unbind = mtk_dpi_unbind,
|
|
};
|
|
|
|
static int mtk_dpi_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct mtk_dpi *dpi;
|
|
struct resource *mem;
|
|
struct device_node *ep, *bridge_node = NULL;
|
|
int comp_id;
|
|
int ret;
|
|
|
|
dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
|
|
if (!dpi)
|
|
return -ENOMEM;
|
|
|
|
dpi->dev = dev;
|
|
|
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
dpi->regs = devm_ioremap_resource(dev, mem);
|
|
if (IS_ERR(dpi->regs)) {
|
|
ret = PTR_ERR(dpi->regs);
|
|
dev_err(dev, "Failed to ioremap mem resource: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dpi->engine_clk = devm_clk_get(dev, "engine");
|
|
if (IS_ERR(dpi->engine_clk)) {
|
|
ret = PTR_ERR(dpi->engine_clk);
|
|
dev_err(dev, "Failed to get engine clock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dpi->pixel_clk = devm_clk_get(dev, "pixel");
|
|
if (IS_ERR(dpi->pixel_clk)) {
|
|
ret = PTR_ERR(dpi->pixel_clk);
|
|
dev_err(dev, "Failed to get pixel clock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dpi->tvd_clk = devm_clk_get(dev, "pll");
|
|
if (IS_ERR(dpi->tvd_clk)) {
|
|
ret = PTR_ERR(dpi->tvd_clk);
|
|
dev_err(dev, "Failed to get tvdpll clock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dpi->irq = platform_get_irq(pdev, 0);
|
|
if (dpi->irq <= 0) {
|
|
dev_err(dev, "Failed to get irq: %d\n", dpi->irq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ep = of_graph_get_next_endpoint(dev->of_node, NULL);
|
|
if (ep) {
|
|
bridge_node = of_graph_get_remote_port_parent(ep);
|
|
of_node_put(ep);
|
|
}
|
|
if (!bridge_node) {
|
|
dev_err(dev, "Failed to find bridge node\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
dev_info(dev, "Found bridge node: %s\n", bridge_node->full_name);
|
|
|
|
dpi->encoder.bridge = of_drm_find_bridge(bridge_node);
|
|
of_node_put(bridge_node);
|
|
if (!dpi->encoder.bridge)
|
|
return -EPROBE_DEFER;
|
|
|
|
comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DPI);
|
|
if (comp_id < 0) {
|
|
dev_err(dev, "Failed to identify by alias: %d\n", comp_id);
|
|
return comp_id;
|
|
}
|
|
|
|
ret = mtk_ddp_comp_init(dev, dev->of_node, &dpi->ddp_comp, comp_id,
|
|
&mtk_dpi_funcs);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to initialize component: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, dpi);
|
|
|
|
ret = component_add(dev, &mtk_dpi_component_ops);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to add component: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_dpi_remove(struct platform_device *pdev)
|
|
{
|
|
component_del(&pdev->dev, &mtk_dpi_component_ops);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id mtk_dpi_of_ids[] = {
|
|
{ .compatible = "mediatek,mt8173-dpi", },
|
|
{}
|
|
};
|
|
|
|
struct platform_driver mtk_dpi_driver = {
|
|
.probe = mtk_dpi_probe,
|
|
.remove = mtk_dpi_remove,
|
|
.driver = {
|
|
.name = "mediatek-dpi",
|
|
.of_match_table = mtk_dpi_of_ids,
|
|
},
|
|
};
|