[PATCH v13 04/14] drm/mediatek: Add DPI sub driver
Daniel Kurtz
djkurtz at chromium.org
Wed Mar 9 14:23:25 UTC 2016
Hi Philipp, Jie,
Some small comments.
Nothing that can't be fixed after merging if you prefer.
On Tue, Mar 8, 2016 at 9:27 PM, Philipp Zabel <p.zabel at pengutronix.de> wrote:
> From: Jie Qiu <jie.qiu at mediatek.com>
>
> Add DPI connector/encoder to support HDMI output via the
> attached HDMI bridge.
>
> Signed-off-by: Jie Qiu <jie.qiu at mediatek.com>
> Signed-off-by: Philipp Zabel <p.zabel at pengutronix.de>
> ---
> drivers/gpu/drm/mediatek/Makefile | 3 +-
> drivers/gpu/drm/mediatek/mtk_dpi.c | 757 ++++++++++++++++++++++++++++++++
> drivers/gpu/drm/mediatek/mtk_dpi.h | 85 ++++
> drivers/gpu/drm/mediatek/mtk_dpi_regs.h | 228 ++++++++++
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 +
> 6 files changed, 1074 insertions(+), 1 deletion(-)
> create mode 100644 drivers/gpu/drm/mediatek/mtk_dpi.c
> create mode 100644 drivers/gpu/drm/mediatek/mtk_dpi.h
> create mode 100644 drivers/gpu/drm/mediatek/mtk_dpi_regs.h
>
> diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
> index e781db5a..5fcf58e 100644
> --- a/drivers/gpu/drm/mediatek/Makefile
> +++ b/drivers/gpu/drm/mediatek/Makefile
> @@ -8,6 +8,7 @@ mediatek-drm-y := mtk_disp_ovl.o \
> mtk_drm_gem.o \
> mtk_drm_plane.o \
> mtk_dsi.o \
> - mtk_mipi_tx.o
> + mtk_mipi_tx.o \
> + mtk_dpi.o
>
> obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> new file mode 100644
> index 0000000..ae81906
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -0,0 +1,757 @@
> +/*
> + * Copyright (c) 2014 MediaTek Inc.
> + * Author: Jie Qiu <jie.qiu at mediatek.com>
> + *
> + * 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_crtc.h>
> +#include <drm/drm_crtc_helper.h>
> +#include <linux/kernel.h>
> +#include <linux/component.h>
> +#include <linux/platform_device.h>
> +#include <linux/of.h>
> +#include <linux/of_graph.h>
> +#include <linux/interrupt.h>
> +#include <linux/clk.h>
> +
> +#include "mtk_dpi.h"
> +#include "mtk_dpi_regs.h"
> +
> +enum mtk_dpi_polarity {
> + MTK_DPI_POLARITY_RISING,
> + MTK_DPI_POLARITY_FALLING,
> +};
> +
> +enum mtk_dpi_power_ctl {
> + DPI_POWER_START = BIT(0),
> + DPI_POWER_ENABLE = BIT(1),
> + DPI_POWER_RESUME = BIT(2),
> +};
> +
> +struct mtk_dpi_polarities {
> + enum mtk_dpi_polarity de_pol;
> + enum mtk_dpi_polarity ck_pol;
> + enum mtk_dpi_polarity hsync_pol;
> + enum mtk_dpi_polarity vsync_pol;
> +};
> +
> +struct mtk_dpi_sync_param {
> + u32 sync_width;
> + u32 front_porch;
> + u32 back_porch;
> + bool shift_half_line;
> +};
> +
> +struct mtk_dpi_yc_limit {
> + u16 y_top;
> + u16 y_bottom;
> + u16 c_top;
> + u16 c_bottom;
> +};
> +
> +static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)
> +{
> + u32 tmp = readl(dpi->regs + offset) & ~mask;
> +
> + tmp |= (val & mask);
> + writel(tmp, dpi->regs + offset);
> +}
> +
> +static void mtk_dpi_sw_reset(struct mtk_dpi *dpi, bool reset)
> +{
> + mtk_dpi_mask(dpi, DPI_RET, reset ? RST : 0, RST);
> +}
> +
> +static void mtk_dpi_enable(struct mtk_dpi *dpi)
> +{
> + mtk_dpi_mask(dpi, DPI_EN, EN, EN);
> +}
> +
> +static void mtk_dpi_disable(struct mtk_dpi *dpi)
> +{
> + mtk_dpi_mask(dpi, DPI_EN, 0, EN);
> +}
> +
> +static void mtk_dpi_config_hsync(struct mtk_dpi *dpi,
> + struct mtk_dpi_sync_param *sync)
> +{
> + mtk_dpi_mask(dpi, DPI_TGEN_HWIDTH,
> + sync->sync_width << HPW, HPW_MASK);
> + mtk_dpi_mask(dpi, DPI_TGEN_HPORCH,
> + sync->back_porch << HBP, HBP_MASK);
> + mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->front_porch << HFP,
> + HFP_MASK);
> +}
> +
> +static void mtk_dpi_config_vsync(struct mtk_dpi *dpi,
> + struct mtk_dpi_sync_param *sync,
> + u32 width_addr, u32 porch_addr)
> +{
> + mtk_dpi_mask(dpi, width_addr,
> + sync->sync_width << VSYNC_WIDTH_SHIFT,
> + VSYNC_WIDTH_MASK);
> + mtk_dpi_mask(dpi, width_addr,
> + sync->shift_half_line << VSYNC_HALF_LINE_SHIFT,
> + VSYNC_HALF_LINE_MASK);
> + mtk_dpi_mask(dpi, porch_addr,
> + sync->back_porch << VSYNC_BACK_PORCH_SHIFT,
> + VSYNC_BACK_PORCH_MASK);
> + mtk_dpi_mask(dpi, porch_addr,
> + sync->front_porch << VSYNC_FRONT_PORCH_SHIFT,
> + VSYNC_FRONT_PORCH_MASK);
> +}
> +
> +static void mtk_dpi_config_vsync_lodd(struct mtk_dpi *dpi,
> + struct mtk_dpi_sync_param *sync)
> +{
> + mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH, DPI_TGEN_VPORCH);
> +}
> +
> +static void mtk_dpi_config_vsync_leven(struct mtk_dpi *dpi,
> + struct mtk_dpi_sync_param *sync)
> +{
> + mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_LEVEN,
> + DPI_TGEN_VPORCH_LEVEN);
> +}
> +
> +static void mtk_dpi_config_vsync_rodd(struct mtk_dpi *dpi,
> + struct mtk_dpi_sync_param *sync)
> +{
> + mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_RODD,
> + DPI_TGEN_VPORCH_RODD);
> +}
> +
> +static void mtk_dpi_config_vsync_reven(struct mtk_dpi *dpi,
> + struct mtk_dpi_sync_param *sync)
> +{
> + mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_REVEN,
> + DPI_TGEN_VPORCH_REVEN);
> +}
> +
> +static void mtk_dpi_config_pol(struct mtk_dpi *dpi,
> + struct mtk_dpi_polarities *dpi_pol)
> +{
> + unsigned int pol;
> +
> + pol = (dpi_pol->ck_pol == MTK_DPI_POLARITY_RISING ? 0 : CK_POL) |
> + (dpi_pol->de_pol == MTK_DPI_POLARITY_RISING ? 0 : DE_POL) |
> + (dpi_pol->hsync_pol == MTK_DPI_POLARITY_RISING ? 0 : HSYNC_POL) |
> + (dpi_pol->vsync_pol == MTK_DPI_POLARITY_RISING ? 0 : VSYNC_POL);
> + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, pol,
> + CK_POL | DE_POL | HSYNC_POL | VSYNC_POL);
> +}
> +
> +static void mtk_dpi_config_3d(struct mtk_dpi *dpi, bool en_3d)
> +{
> + mtk_dpi_mask(dpi, DPI_CON, en_3d ? TDFP_EN : 0, TDFP_EN);
> +}
> +
> +static void mtk_dpi_config_interface(struct mtk_dpi *dpi, bool inter)
> +{
> + mtk_dpi_mask(dpi, DPI_CON, inter ? INTL_EN : 0, INTL_EN);
> +}
> +
> +static void mtk_dpi_config_fb_size(struct mtk_dpi *dpi, u32 width, u32 height)
> +{
> + mtk_dpi_mask(dpi, DPI_SIZE, width << HSIZE, HSIZE_MASK);
> + mtk_dpi_mask(dpi, DPI_SIZE, height << VSIZE, VSIZE_MASK);
> +}
> +
> +static void mtk_dpi_config_channel_limit(struct mtk_dpi *dpi,
> + struct mtk_dpi_yc_limit *limit)
> +{
> + mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_bottom << Y_LIMINT_BOT,
> + Y_LIMINT_BOT_MASK);
> + mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_top << Y_LIMINT_TOP,
> + Y_LIMINT_TOP_MASK);
> + mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_bottom << C_LIMIT_BOT,
> + C_LIMIT_BOT_MASK);
> + mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_top << C_LIMIT_TOP,
> + C_LIMIT_TOP_MASK);
> +}
> +
> +static void mtk_dpi_config_bit_num(struct mtk_dpi *dpi,
> + enum mtk_dpi_out_bit_num num)
> +{
> + u32 val;
> +
> + switch (num) {
> + case MTK_DPI_OUT_BIT_NUM_8BITS:
> + val = OUT_BIT_8;
> + break;
> + case MTK_DPI_OUT_BIT_NUM_10BITS:
> + val = OUT_BIT_10;
> + break;
> + case MTK_DPI_OUT_BIT_NUM_12BITS:
> + val = OUT_BIT_12;
> + break;
> + case MTK_DPI_OUT_BIT_NUM_16BITS:
> + val = OUT_BIT_16;
> + break;
> + default:
> + val = OUT_BIT_8;
> + break;
> + }
> + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << OUT_BIT,
> + OUT_BIT_MASK);
> +}
> +
> +static void mtk_dpi_config_yc_map(struct mtk_dpi *dpi,
> + enum mtk_dpi_out_yc_map map)
> +{
> + u32 val;
> +
> + switch (map) {
> + case MTK_DPI_OUT_YC_MAP_RGB:
> + val = YC_MAP_RGB;
> + break;
> + case MTK_DPI_OUT_YC_MAP_CYCY:
> + val = YC_MAP_CYCY;
> + break;
> + case MTK_DPI_OUT_YC_MAP_YCYC:
> + val = YC_MAP_YCYC;
> + break;
> + case MTK_DPI_OUT_YC_MAP_CY:
> + val = YC_MAP_CY;
> + break;
> + case MTK_DPI_OUT_YC_MAP_YC:
> + val = YC_MAP_YC;
> + break;
> + default:
> + val = YC_MAP_RGB;
> + break;
> + }
> +
> + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << YC_MAP, YC_MAP_MASK);
> +}
> +
> +static void mtk_dpi_config_channel_swap(struct mtk_dpi *dpi,
> + enum mtk_dpi_out_channel_swap swap)
> +{
> + u32 val;
> +
> + switch (swap) {
> + case MTK_DPI_OUT_CHANNEL_SWAP_RGB:
> + val = SWAP_RGB;
> + break;
> + case MTK_DPI_OUT_CHANNEL_SWAP_GBR:
> + val = SWAP_GBR;
> + break;
> + case MTK_DPI_OUT_CHANNEL_SWAP_BRG:
> + val = SWAP_BRG;
> + break;
> + case MTK_DPI_OUT_CHANNEL_SWAP_RBG:
> + val = SWAP_RBG;
> + break;
> + case MTK_DPI_OUT_CHANNEL_SWAP_GRB:
> + val = SWAP_GRB;
> + break;
> + case MTK_DPI_OUT_CHANNEL_SWAP_BGR:
> + val = SWAP_BGR;
> + break;
> + default:
> + val = SWAP_RGB;
> + break;
> + }
> +
> + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << CH_SWAP, CH_SWAP_MASK);
> +}
> +
> +static void mtk_dpi_config_yuv422_enable(struct mtk_dpi *dpi, bool enable)
> +{
> + mtk_dpi_mask(dpi, DPI_CON, enable ? YUV422_EN : 0, YUV422_EN);
> +}
> +
> +static void mtk_dpi_config_csc_enable(struct mtk_dpi *dpi, bool enable)
> +{
> + mtk_dpi_mask(dpi, DPI_CON, enable ? CSC_ENABLE : 0, CSC_ENABLE);
> +}
> +
> +static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable)
> +{
> + mtk_dpi_mask(dpi, DPI_CON, enable ? IN_RB_SWAP : 0, IN_RB_SWAP);
> +}
> +
> +static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)
> +{
> + mtk_dpi_mask(dpi, DPI_H_FRE_CON, H_FRE_2N, H_FRE_2N);
> +}
> +
> +static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
> + enum mtk_dpi_out_color_format format)
> +{
> + if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_444) ||
> + (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
> + mtk_dpi_config_yuv422_enable(dpi, false);
> + mtk_dpi_config_csc_enable(dpi, true);
> + mtk_dpi_config_swap_input(dpi, false);
> + mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_BGR);
> + } else if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_422) ||
> + (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
> + mtk_dpi_config_yuv422_enable(dpi, true);
> + mtk_dpi_config_csc_enable(dpi, true);
> + mtk_dpi_config_swap_input(dpi, true);
> + mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
> + } else {
> + mtk_dpi_config_yuv422_enable(dpi, false);
> + mtk_dpi_config_csc_enable(dpi, false);
> + mtk_dpi_config_swap_input(dpi, false);
> + mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
> + }
> +}
> +
> +static void mtk_dpi_power_off(struct mtk_dpi *dpi, enum mtk_dpi_power_ctl pctl)
> +{
> + dpi->power_ctl &= ~pctl;
> +
> + if ((dpi->power_ctl & DPI_POWER_START) ||
> + ((dpi->power_ctl & DPI_POWER_ENABLE) &&
> + (dpi->power_ctl & DPI_POWER_RESUME)))
> + return;
> +
> + if (!dpi->power_sta)
> + return;
> +
> + mtk_dpi_disable(dpi);
> + clk_disable_unprepare(dpi->pixel_clk);
> + clk_disable_unprepare(dpi->engine_clk);
> + dpi->power_sta = false;
> +}
> +
> +static int mtk_dpi_power_on(struct mtk_dpi *dpi, enum mtk_dpi_power_ctl pctl)
> +{
> + int ret;
> +
> + dpi->power_ctl |= pctl;
> +
> + if (!(dpi->power_ctl & DPI_POWER_START) &&
> + !((dpi->power_ctl & DPI_POWER_ENABLE) &&
> + ((dpi->power_ctl & DPI_POWER_RESUME))))
There one too many () on the POWER_RESUME clause.
> + return 0;
> +
> + if (dpi->power_sta)
> + return 0;
> +
> + ret = clk_prepare_enable(dpi->engine_clk);
> + if (ret) {
> + dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret);
> + goto err_eng;
> + }
> +
> + ret = clk_prepare_enable(dpi->pixel_clk);
> + if (ret) {
> + dev_err(dpi->dev, "Failed to enable pixel clock: %d\n", ret);
> + goto err_pixel;
> + }
> +
> + mtk_dpi_enable(dpi);
> + dpi->power_sta = true;
> + return 0;
> +
> +err_pixel:
> + clk_disable_unprepare(dpi->engine_clk);
> +err_eng:
> + dpi->power_ctl &= ~pctl;
> + return ret;
> +}
> +
> +int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, struct drm_display_mode *mode)
> +{
> + struct mtk_dpi_yc_limit limit;
> + struct mtk_dpi_polarities dpi_pol;
> + struct mtk_dpi_sync_param hsync;
> + struct mtk_dpi_sync_param vsync_lodd = { 0 };
> + struct mtk_dpi_sync_param vsync_leven = { 0 };
> + struct mtk_dpi_sync_param vsync_rodd = { 0 };
> + struct mtk_dpi_sync_param vsync_reven = { 0 };
> + unsigned long pix_rate;
> + unsigned long pll_rate;
> + unsigned int factor;
> +
> + if (!dpi) {
> + dev_err(dpi->dev, "invalid argument\n");
> + return -EINVAL;
> + }
> +
> + pix_rate = 1000UL * mode->clock;
> + if (mode->clock <= 74000)
> + factor = 8 * 3;
> + else
> + factor = 4 * 3;
> + pll_rate = pix_rate * factor;
> +
> + dev_dbg(dpi->dev, "Want PLL %lu Hz, pixel clock %lu Hz\n",
> + pll_rate, pix_rate);
> +
> + clk_set_rate(dpi->tvd_clk, pll_rate);
> + 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: %d\n", ret);
> + return ret;
> + }
> +
> + 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;
> + }
> +
> + dpi->power_ctl |= DPI_POWER_RESUME;
> +
> + return 0;
> +}
> +
> +static int mtk_dpi_remove(struct platform_device *pdev)
> +{
> + component_del(&pdev->dev, &mtk_dpi_component_ops);
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int mtk_dpi_suspend(struct device *dev)
> +{
> + struct mtk_dpi *dpi = dev_get_drvdata(dev);
> +
> + if (IS_ERR(dpi)) {
> + dev_info(dev, "dpi suspend failed!\n");
> + return PTR_ERR(dpi);
> + }
> +
> + mtk_dpi_power_off(dpi, DPI_POWER_RESUME);
> +
> + dev_info(dev, "dpi suspend success!\n");
> +
> + return 0;
> +}
> +
> +static int mtk_dpi_resume(struct device *dev)
> +{
> + struct mtk_dpi *dpi = dev_get_drvdata(dev);
> + int ret;
> +
> + if (IS_ERR(dpi)) {
> + dev_err(dev, "dpi resume failed!\n");
> + return PTR_ERR(dpi);
> + }
> +
> + ret = mtk_dpi_power_on(dpi, DPI_POWER_RESUME);
> + if (ret) {
> + dev_err(dev, "dpi resume failed!\n");
> + return ret;
> + }
> +
> + dev_info(dev, "dpi resume success!\n");
> +
> + return 0;
> +}
> +#endif
> +
> +static SIMPLE_DEV_PM_OPS(mtk_dpi_pm_ops, mtk_dpi_suspend, mtk_dpi_resume);
Like hdmi & dsi, I think we can remove these PM routines.
And maybe then we can remove the "DPI_POWER_RESUME" logic (which I
don't grok yet)?
> +
> +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,
> + .pm = &mtk_dpi_pm_ops,
> + },
> +};
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.h b/drivers/gpu/drm/mediatek/mtk_dpi.h
> new file mode 100644
> index 0000000..4fa4114
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.h
All of this can be moved to mtk_dpi.c.
> @@ -0,0 +1,85 @@
> +/*
> + * Copyright (c) 2014 MediaTek Inc.
> + * Author: Jie Qiu <jie.qiu at mediatek.com>
> + *
> + * 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.
> + */
> +#ifndef _MTK_DPI_H
> +#define _MTK_DPI_H
> +
> +#include <linux/types.h>
> +#include <drm/drm_crtc.h>
> +
> +#include "mtk_drm_ddp_comp.h"
> +
> +struct device;
> +struct clk;
> +
> +enum mtk_dpi_out_bit_num {
> + MTK_DPI_OUT_BIT_NUM_8BITS,
> + MTK_DPI_OUT_BIT_NUM_10BITS,
> + MTK_DPI_OUT_BIT_NUM_12BITS,
> + MTK_DPI_OUT_BIT_NUM_16BITS
> +};
> +
> +enum mtk_dpi_out_yc_map {
> + MTK_DPI_OUT_YC_MAP_RGB,
> + MTK_DPI_OUT_YC_MAP_CYCY,
> + MTK_DPI_OUT_YC_MAP_YCYC,
> + MTK_DPI_OUT_YC_MAP_CY,
> + MTK_DPI_OUT_YC_MAP_YC
> +};
> +
> +enum mtk_dpi_out_channel_swap {
> + MTK_DPI_OUT_CHANNEL_SWAP_RGB,
> + MTK_DPI_OUT_CHANNEL_SWAP_GBR,
> + MTK_DPI_OUT_CHANNEL_SWAP_BRG,
> + MTK_DPI_OUT_CHANNEL_SWAP_RBG,
> + MTK_DPI_OUT_CHANNEL_SWAP_GRB,
> + MTK_DPI_OUT_CHANNEL_SWAP_BGR
> +};
> +
> +enum mtk_dpi_out_color_format {
> + MTK_DPI_COLOR_FORMAT_RGB,
> + MTK_DPI_COLOR_FORMAT_RGB_FULL,
> + MTK_DPI_COLOR_FORMAT_YCBCR_444,
> + MTK_DPI_COLOR_FORMAT_YCBCR_422,
> + MTK_DPI_COLOR_FORMAT_XV_YCC,
> + MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL,
> + MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL
> +};
> +
> +struct mtk_dpi {
> + struct mtk_ddp_comp ddp_comp;
> + struct drm_encoder encoder;
> + void __iomem *regs;
> + struct device *dev;
> + struct clk *engine_clk;
> + struct clk *pixel_clk;
> + struct clk *tvd_clk;
> + int irq;
> + struct drm_display_mode mode;
> + enum mtk_dpi_out_color_format color_format;
> + enum mtk_dpi_out_yc_map yc_map;
> + enum mtk_dpi_out_bit_num bit_num;
> + enum mtk_dpi_out_channel_swap channel_swap;
> + bool power_sta;
> + u8 power_ctl;
> +};
> +
> +static inline struct mtk_dpi *mtk_dpi_from_encoder(struct drm_encoder *e)
> +{
> + return container_of(e, struct mtk_dpi, encoder);
> +}
> +
> +int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
> + struct drm_display_mode *mode);
> +
> +#endif /* _MTK_DPI_H */
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> new file mode 100644
> index 0000000..4b6ad47
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> @@ -0,0 +1,228 @@
> +/*
> + * Copyright (c) 2014 MediaTek Inc.
> + * Author: Jie Qiu <jie.qiu at mediatek.com>
> + *
> + * 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.
> + */
> +#ifndef __MTK_DPI_REGS_H
> +#define __MTK_DPI_REGS_H
> +
> +#define DPI_EN 0x00
> +#define EN BIT(0)
> +
> +#define DPI_RET 0x04
> +#define RST BIT(0)
> +
> +#define DPI_INTEN 0x08
> +#define INT_VSYNC_EN BIT(0)
> +#define INT_VDE_EN BIT(1)
> +#define INT_UNDERFLOW_EN BIT(2)
> +
> +#define DPI_INTSTA 0x0C
> +#define INT_VSYNC_STA BIT(0)
> +#define INT_VDE_STA BIT(1)
> +#define INT_UNDERFLOW_STA BIT(2)
> +
> +#define DPI_CON 0x10
> +#define BG_ENABLE BIT(0)
> +#define IN_RB_SWAP BIT(1)
> +#define INTL_EN BIT(2)
> +#define TDFP_EN BIT(3)
> +#define CLPF_EN BIT(4)
> +#define YUV422_EN BIT(5)
> +#define CSC_ENABLE BIT(6)
> +#define R601_SEL BIT(7)
> +#define EMBSYNC_EN BIT(8)
> +#define VS_LODD_EN BIT(16)
> +#define VS_LEVEN_EN BIT(17)
> +#define VS_RODD_EN BIT(18)
> +#define VS_REVEN BIT(19)
> +#define FAKE_DE_LODD BIT(20)
> +#define FAKE_DE_LEVEN BIT(21)
> +#define FAKE_DE_RODD BIT(22)
> +#define FAKE_DE_REVEN BIT(23)
> +
> +#define DPI_OUTPUT_SETTING 0x14
> +#define CH_SWAP 0
> +#define CH_SWAP_MASK (0x7 << 0)
> +#define SWAP_RGB 0x00
> +#define SWAP_GBR 0x01
> +#define SWAP_BRG 0x02
> +#define SWAP_RBG 0x03
> +#define SWAP_GRB 0x04
> +#define SWAP_BGR 0x05
> +#define BIT_SWAP BIT(3)
> +#define B_MASK BIT(4)
> +#define G_MASK BIT(5)
> +#define R_MASK BIT(6)
> +#define DE_MASK BIT(8)
> +#define HS_MASK BIT(9)
> +#define VS_MASK BIT(10)
> +#define DE_POL BIT(12)
> +#define HSYNC_POL BIT(13)
> +#define VSYNC_POL BIT(14)
> +#define CK_POL BIT(15)
> +#define OEN_OFF BIT(16)
> +#define EDGE_SEL BIT(17)
> +#define OUT_BIT 18
> +#define OUT_BIT_MASK (0x3 << 18)
> +#define OUT_BIT_8 0x00
> +#define OUT_BIT_10 0x01
> +#define OUT_BIT_12 0x02
> +#define OUT_BIT_16 0x03
> +#define YC_MAP 20
> +#define YC_MAP_MASK (0x7 << 20)
> +#define YC_MAP_RGB 0x00
> +#define YC_MAP_CYCY 0x04
> +#define YC_MAP_YCYC 0x05
> +#define YC_MAP_CY 0x06
> +#define YC_MAP_YC 0x07
> +
> +#define DPI_SIZE 0x18
> +#define HSIZE 0
> +#define HSIZE_MASK (0x1FFF << 0)
> +#define VSIZE 16
> +#define VSIZE_MASK (0x1FFF << 16)
> +
> +#define DPI_DDR_SETTING 0x1C
> +#define DDR_EN BIT(0)
> +#define DDDR_SEL BIT(1)
> +#define DDR_4PHASE BIT(2)
> +#define DDR_WIDTH (0x3 << 4)
> +#define DDR_PAD_MODE (0x1 << 8)
> +
> +#define DPI_TGEN_HWIDTH 0x20
> +#define HPW 0
> +#define HPW_MASK (0xFFF << 0)
> +
> +#define DPI_TGEN_HPORCH 0x24
> +#define HBP 0
> +#define HBP_MASK (0xFFF << 0)
> +#define HFP 16
> +#define HFP_MASK (0xFFF << 16)
> +
> +#define DPI_TGEN_VWIDTH 0x28
> +#define DPI_TGEN_VPORCH 0x2C
> +
> +#define VSYNC_WIDTH_SHIFT 0
> +#define VSYNC_WIDTH_MASK (0xFFF << 0)
> +#define VSYNC_HALF_LINE_SHIFT 16
> +#define VSYNC_HALF_LINE_MASK BIT(16)
> +#define VSYNC_BACK_PORCH_SHIFT 0
> +#define VSYNC_BACK_PORCH_MASK (0xFFF << 0)
> +#define VSYNC_FRONT_PORCH_SHIFT 16
> +#define VSYNC_FRONT_PORCH_MASK (0xFFF << 16)
> +
> +#define DPI_BG_HCNTL 0x30
> +#define BG_RIGHT (0x1FFF << 0)
> +#define BG_LEFT (0x1FFF << 16)
> +
> +#define DPI_BG_VCNTL 0x34
> +#define BG_BOT (0x1FFF << 0)
> +#define BG_TOP (0x1FFF << 16)
> +
> +#define DPI_BG_COLOR 0x38
> +#define BG_B (0xF << 0)
> +#define BG_G (0xF << 8)
> +#define BG_R (0xF << 16)
> +
> +#define DPI_FIFO_CTL 0x3C
> +#define FIFO_VALID_SET (0x1F << 0)
> +#define FIFO_RST_SEL (0x1 << 8)
> +
> +#define DPI_STATUS 0x40
> +#define VCOUNTER (0x1FFF << 0)
> +#define DPI_BUSY BIT(16)
> +#define OUTEN BIT(17)
> +#define FIELD BIT(20)
> +#define TDLR BIT(21)
> +
> +#define DPI_TMODE 0x44
> +#define DPI_OEN_ON BIT(0)
> +
> +#define DPI_CHECKSUM 0x48
> +#define DPI_CHECKSUM_MASK (0xFFFFFF << 0)
> +#define DPI_CHECKSUM_READY BIT(30)
> +#define DPI_CHECKSUM_EN BIT(31)
> +
> +#define DPI_DUMMY 0x50
> +#define DPI_DUMMY_MASK (0xFFFFFFFF << 0)
> +
> +#define DPI_TGEN_VWIDTH_LEVEN 0x68
> +#define DPI_TGEN_VPORCH_LEVEN 0x6C
> +#define DPI_TGEN_VWIDTH_RODD 0x70
> +#define DPI_TGEN_VPORCH_RODD 0x74
> +#define DPI_TGEN_VWIDTH_REVEN 0x78
> +#define DPI_TGEN_VPORCH_REVEN 0x7C
> +
> +#define DPI_ESAV_VTIMING_LODD 0x80
> +#define ESAV_VOFST_LODD (0xFFF << 0)
> +#define ESAV_VWID_LODD (0xFFF << 16)
> +
> +#define DPI_ESAV_VTIMING_LEVEN 0x84
> +#define ESAV_VOFST_LEVEN (0xFFF << 0)
> +#define ESAV_VWID_LEVEN (0xFFF << 16)
> +
> +#define DPI_ESAV_VTIMING_RODD 0x88
> +#define ESAV_VOFST_RODD (0xFFF << 0)
> +#define ESAV_VWID_RODD (0xFFF << 16)
> +
> +#define DPI_ESAV_VTIMING_REVEN 0x8C
> +#define ESAV_VOFST_REVEN (0xFFF << 0)
> +#define ESAV_VWID_REVEN (0xFFF << 16)
> +
> +#define DPI_ESAV_FTIMING 0x90
> +#define ESAV_FOFST_ODD (0xFFF << 0)
> +#define ESAV_FOFST_EVEN (0xFFF << 16)
> +
> +#define DPI_CLPF_SETTING 0x94
> +#define CLPF_TYPE (0x3 << 0)
> +#define ROUND_EN BIT(4)
> +
> +#define DPI_Y_LIMIT 0x98
> +#define Y_LIMINT_BOT 0
> +#define Y_LIMINT_BOT_MASK (0xFFF << 0)
> +#define Y_LIMINT_TOP 16
> +#define Y_LIMINT_TOP_MASK (0xFFF << 16)
> +
> +#define DPI_C_LIMIT 0x9C
> +#define C_LIMIT_BOT 0
> +#define C_LIMIT_BOT_MASK (0xFFF << 0)
> +#define C_LIMIT_TOP 16
> +#define C_LIMIT_TOP_MASK (0xFFF << 16)
> +
> +#define DPI_YUV422_SETTING 0xA0
> +#define UV_SWAP BIT(0)
> +#define CR_DELSEL BIT(4)
> +#define CB_DELSEL BIT(5)
> +#define Y_DELSEL BIT(6)
> +#define DE_DELSEL BIT(7)
> +
> +#define DPI_EMBSYNC_SETTING 0xA4
> +#define EMBSYNC_R_CR_EN BIT(0)
> +#define EMPSYNC_G_Y_EN BIT(1)
> +#define EMPSYNC_B_CB_EN BIT(2)
> +#define ESAV_F_INV BIT(4)
> +#define ESAV_V_INV BIT(5)
> +#define ESAV_H_INV BIT(6)
> +#define ESAV_CODE_MAN BIT(8)
> +#define VS_OUT_SEL (0x7 << 12)
> +
> +#define DPI_ESAV_CODE_SET0 0xA8
> +#define ESAV_CODE0 (0xFFF << 0)
> +#define ESAV_CODE1 (0xFFF << 16)
> +
> +#define DPI_ESAV_CODE_SET1 0xAC
> +#define ESAV_CODE2 (0xFFF << 0)
> +#define ESAV_CODE3_MSB BIT(16)
> +
> +#define DPI_H_FRE_CON 0xE0
> +#define H_FRE_2N BIT(25)
> +#endif /* __MTK_DPI_REGS_H */
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index 4fcc0e0..a69958c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -553,6 +553,7 @@ static struct platform_driver * const mtk_drm_drivers[] = {
> &mtk_disp_rdma_driver,
> &mtk_dsi_driver,
> &mtk_mipi_tx_driver,
> + &mtk_dpi_driver,
> };
>
> static int __init mtk_drm_init(void)
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> index 161a362..e0fff2c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> @@ -52,5 +52,6 @@ extern struct platform_driver mtk_disp_ovl_driver;
> extern struct platform_driver mtk_disp_rdma_driver;
> extern struct platform_driver mtk_dsi_driver;
> extern struct platform_driver mtk_mipi_tx_driver;
> +extern struct platform_driver mtk_dpi_driver;
>
> #endif /* MTK_DRM_DRV_H */
> --
> 2.7.0
>
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