[PATCH v3 5/6] drm/mediatek: dpi: Add dpintf support
Markus Schneider-Pargmann
msp at baylibre.com
Wed Oct 20 12:08:20 PDT 2021
Hi Chun-Kuang,
On Fri, Oct 15, 2021 at 12:04:10AM +0800, Chun-Kuang Hu wrote:
> Hi, Markus:
>
> Markus Schneider-Pargmann <msp at baylibre.com> 於 2021年10月1日 週五 下午5:44寫道：
> >
> > dpintf is the displayport interface hardware unit. This unit is similar
> > to dpi and can reuse most of the code.
> >
> > This patch adds support for mt8195-dpintf to this dpi driver. Main
> > differences are:
> > - Some features/functional components are not available for dpintf
> > which are now excluded from code execution once is_dpintf is set
> > - dpintf can and needs to choose between different clockdividers based
> > on the clockspeed. This is done by choosing a different clock parent.
> > - There are two additional clocks that need to be managed. These are
> > only set for dpintf and will be set to NULL if not supplied. The
> > clk_* calls handle these as normal clocks then.
> > - Some register contents differ slightly between the two components. To
> > work around this I added register bits/masks with a DPINTF_ prefix
> > and use them where different.
> >
> > Based on a separate driver for dpintf created by
> > Jason-JH.Lin <jason-jh.lin at mediatek.com>.
> >
> > Signed-off-by: Markus Schneider-Pargmann <msp at baylibre.com>
> > ---
> >
> > Notes:
> > Changes RFC -> v1:
> > - Remove setting parents and fully rely on the clock tree instead which already
> > models a mux at the important place.
> > - Integrated mtk_dpi dpintf changes into the mediatek drm driver.
> >
> > drivers/gpu/drm/mediatek/mtk_dpi.c | 248 ++++++++++++++++----
> > drivers/gpu/drm/mediatek/mtk_dpi_regs.h | 12 +
> > drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 4 +
> > drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 +
> > drivers/gpu/drm/mediatek/mtk_drm_drv.c | 5 +-
> > 5 files changed, 218 insertions(+), 52 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > index 4554e2de1430..87961ebf5d35 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > @@ -71,6 +71,8 @@ struct mtk_dpi {
> > void __iomem *regs;
> > struct device *dev;
> > struct clk *engine_clk;
> > + struct clk *hf_fmm_clk;
> > + struct clk *hf_fdp_clk;
> > struct clk *pixel_clk;
> > struct clk *tvd_clk;
> > int irq;
> > @@ -125,6 +127,7 @@ struct mtk_dpi_conf {
> > bool edge_sel_en;
> > const u32 *output_fmts;
> > u32 num_output_fmts;
> > + bool is_dpintf;
> > };
> >
> > static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)
> > @@ -153,30 +156,52 @@ static void mtk_dpi_disable(struct mtk_dpi *dpi)
> > 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);
> > + if (dpi->conf->is_dpintf) {
> > + mtk_dpi_mask(dpi, DPI_TGEN_HWIDTH,
> > + sync->sync_width << HPW, DPINTF_HPW_MASK);
> > + mtk_dpi_mask(dpi, DPI_TGEN_HPORCH,
> > + sync->back_porch << HBP, DPINTF_HBP_MASK);
> > + mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->front_porch << HFP,
> > + DPINTF_HFP_MASK);
>
> define dpi->conf->hpw_mask
> define dpi->conf->hbp_mask
> define dpi->conf->hfp_mask
Thanks, I defined a dpi->conf->dimension_mask instead which I now use
for HWIDTH/HPORCH as well as VSYNC_WIDTH and VSYNC_PORCH as the only
difference is the width of the masks, not their positions. Hope that's
fine.
>
> > + } else {
> > + 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);
> > +
> > + if (dpi->conf->is_dpintf) {
> > + mtk_dpi_mask(dpi, width_addr,
> > + sync->sync_width << VSYNC_WIDTH_SHIFT,
> > + DPINTF_VSYNC_WIDTH_MASK);
> > + mtk_dpi_mask(dpi, porch_addr,
> > + sync->back_porch << VSYNC_BACK_PORCH_SHIFT,
> > + DPINTF_VSYNC_BACK_PORCH_MASK);
> > + mtk_dpi_mask(dpi, porch_addr,
> > + sync->front_porch << VSYNC_FRONT_PORCH_SHIFT,
> > + DPINTF_VSYNC_FRONT_PORCH_MASK);
> > + } else {
> > + mtk_dpi_mask(dpi, width_addr,
> > + sync->sync_width << VSYNC_WIDTH_SHIFT,
> > + VSYNC_WIDTH_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,
> > @@ -210,13 +235,20 @@ static void mtk_dpi_config_pol(struct mtk_dpi *dpi,
> > struct mtk_dpi_polarities *dpi_pol)
> > {
> > unsigned int pol;
> > + unsigned int mask;
> >
> > - 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) |
> > + mask = HSYNC_POL | VSYNC_POL;
> > + 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);
> > + if (!dpi->conf->is_dpintf) {
>
> define dpi->conf->is_ck_de_pol
done
>
> > + mask |= CK_POL | DE_POL;
> > + pol |= (dpi_pol->ck_pol == MTK_DPI_POLARITY_RISING ?
> > + 0 : CK_POL) |
> > + (dpi_pol->de_pol == MTK_DPI_POLARITY_RISING ?
> > + 0 : DE_POL);
> > + }
> > +
> > + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, pol, mask);
> > }
> >
> > static void mtk_dpi_config_3d(struct mtk_dpi *dpi, bool en_3d)
> > @@ -231,8 +263,13 @@ static void mtk_dpi_config_interface(struct mtk_dpi *dpi, bool inter)
> >
> > 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);
> > + if (dpi->conf->is_dpintf) {
> > + mtk_dpi_mask(dpi, DPI_SIZE, width << HSIZE, DPINTF_HSIZE_MASK);
> > + mtk_dpi_mask(dpi, DPI_SIZE, height << VSIZE, DPINTF_VSIZE_MASK);
> > + } else {
> > + 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,
> > @@ -332,12 +369,21 @@ static void mtk_dpi_config_channel_swap(struct mtk_dpi *dpi,
> > break;
> > }
> >
> > - mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << CH_SWAP, CH_SWAP_MASK);
> > + if (dpi->conf->is_dpintf)
> > + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << DPINTF_CH_SWAP,
> > + DPINTF_CH_SWAP_MASK);
> > + else
> > + 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);
> > + if (dpi->conf->is_dpintf)
> > + mtk_dpi_mask(dpi, DPI_CON, enable ? DPINTF_YUV422_EN : 0,
> > + DPINTF_YUV422_EN);
> > + else
> > + 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)
> > @@ -367,19 +413,25 @@ static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
> > 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);
> > + if (!dpi->conf->is_dpintf) {
> > + mtk_dpi_config_csc_enable(dpi, true);
>
> define dpi->conf->csc_support
>
> > + mtk_dpi_config_swap_input(dpi, false);
>
> define dpi->conf->swap_input_support
these two done as well.
>
> > + }
> > 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);
> > + if (!dpi->conf->is_dpintf) {
> > + 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);
> > + if (!dpi->conf->is_dpintf) {
> > + 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);
> > }
> > }
> > @@ -410,6 +462,8 @@ static void mtk_dpi_power_off(struct mtk_dpi *dpi)
> > pinctrl_select_state(dpi->pinctrl, dpi->pins_gpio);
> >
> > mtk_dpi_disable(dpi);
> > + clk_disable_unprepare(dpi->hf_fdp_clk);
> > + clk_disable_unprepare(dpi->hf_fmm_clk);
> > clk_disable_unprepare(dpi->pixel_clk);
> > clk_disable_unprepare(dpi->engine_clk);
> > }
> > @@ -433,12 +487,28 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi)
> > goto err_pixel;
> > }
> >
> > + ret = clk_prepare_enable(dpi->hf_fmm_clk);
> > + if (ret) {
> > + dev_err(dpi->dev, "Failed to enable hf_fmm clock: %d\n", ret);
> > + goto err_hf_fmm;
> > + }
> > +
> > + ret = clk_prepare_enable(dpi->hf_fdp_clk);
> > + if (ret) {
> > + dev_err(dpi->dev, "Failed to enable hf_fdp clock: %d\n", ret);
> > + goto err_hf_fdp;
> > + }
> > +
> > if (dpi->pinctrl && dpi->pins_dpi)
> > pinctrl_select_state(dpi->pinctrl, dpi->pins_dpi);
> >
> > mtk_dpi_enable(dpi);
> > return 0;
> >
> > +err_hf_fdp:
> > + clk_disable_unprepare(dpi->hf_fmm_clk);
> > +err_hf_fmm:
> > + clk_disable_unprepare(dpi->pixel_clk);
> > err_pixel:
> > clk_disable_unprepare(dpi->engine_clk);
> > err_refcount:
> > @@ -472,22 +542,30 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
> > pll_rate = clk_get_rate(dpi->tvd_clk);
> >
> > vm.pixelclock = pll_rate / factor;
> > - if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||
> > - (dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_BE))
> > + if (dpi->conf->is_dpintf)
> > + clk_set_rate(dpi->pixel_clk, vm.pixelclock / 4);
> > + else if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||
> > + (dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_BE))
> > clk_set_rate(dpi->pixel_clk, vm.pixelclock * 2);
> > else
> > clk_set_rate(dpi->pixel_clk, vm.pixelclock);
> >
> > -
> > vm.pixelclock = clk_get_rate(dpi->pixel_clk);
> >
> > dev_dbg(dpi->dev, "Got PLL %lu Hz, pixel clock %lu Hz\n",
> > pll_rate, vm.pixelclock);
> >
> > - limit.c_bottom = 0x0010;
> > - limit.c_top = 0x0FE0;
> > - limit.y_bottom = 0x0010;
> > - limit.y_top = 0x0FE0;
> > + if (dpi->conf->is_dpintf) {
> > + limit.c_bottom = 0x0000;
> > + limit.c_top = 0xFFF;
> > + limit.y_bottom = 0x0000;
> > + limit.y_top = 0xFFF;
> > + } else {
> > + 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;
> > @@ -495,9 +573,15 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
> > MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
> > dpi_pol.vsync_pol = vm.flags & DISPLAY_FLAGS_VSYNC_HIGH ?
> > MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
> > - hsync.sync_width = vm.hsync_len;
> > - hsync.back_porch = vm.hback_porch;
> > - hsync.front_porch = vm.hfront_porch;
> > + if (dpi->conf->is_dpintf) {
> > + hsync.sync_width = vm.hsync_len / 4;
> > + hsync.back_porch = vm.hback_porch / 4;
> > + hsync.front_porch = vm.hfront_porch / 4;
> > + } else {
> > + hsync.sync_width = vm.hsync_len;
> > + hsync.back_porch = vm.hback_porch;
> > + hsync.front_porch = vm.hfront_porch;
> > + }
> > hsync.shift_half_line = false;
> > vsync_lodd.sync_width = vm.vsync_len;
> > vsync_lodd.back_porch = vm.vback_porch;
> > @@ -539,11 +623,16 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
> > 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_dual_edge(dpi);
> > - mtk_dpi_config_disable_edge(dpi);
> > + if (dpi->conf->is_dpintf) {
> > + mtk_dpi_mask(dpi, DPI_CON, DPINTF_INPUT_2P_EN,
> > + DPINTF_INPUT_2P_EN);
> > + } else {
> > + mtk_dpi_config_yc_map(dpi, dpi->yc_map);
> > + mtk_dpi_config_2n_h_fre(dpi);
> > + mtk_dpi_dual_edge(dpi);
> > + mtk_dpi_config_disable_edge(dpi);
> > + }
> > mtk_dpi_sw_reset(dpi, false);
> >
> > return 0;
> > @@ -687,6 +776,17 @@ static const struct drm_bridge_funcs mtk_dpi_bridge_funcs = {
> > .atomic_reset = drm_atomic_helper_bridge_reset,
> > };
> >
> > +static const struct drm_bridge_funcs mtk_dpintf_bridge_funcs = {
> > + .attach = mtk_dpi_bridge_attach,
> > + .mode_set = mtk_dpi_bridge_mode_set,
> > + .disable = mtk_dpi_bridge_disable,
> > + .enable = mtk_dpi_bridge_enable,
> > + .atomic_check = mtk_dpi_bridge_atomic_check,
> > + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
> > + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
> > + .atomic_reset = drm_atomic_helper_bridge_reset,
> > +};
>
> I think mtk_dpintf_bridge_funcs is the same as mtk_dpi_bridge_func, so
> remove this and use mtk_dpi_bridge_func.
They weren't 100% identical as the output formats were missing. I looked
these up in the datasheet and recombined them.
>
> > +
> > void mtk_dpi_start(struct device *dev)
> > {
> > struct mtk_dpi *dpi = dev_get_drvdata(dev);
> > @@ -781,6 +881,16 @@ static unsigned int mt8183_calculate_factor(int clock)
> > return 2;
> > }
> >
> > +static unsigned int mt8195_dpintf_calculate_factor(int clock)
> > +{
> > + if (clock < 70000)
> > + return 4;
> > + else if (clock < 200000)
> > + return 2;
> > + else
> > + return 1;
> > +}
> > +
> > static const u32 mt8173_output_fmts[] = {
> > MEDIA_BUS_FMT_RGB888_1X24,
> > };
> > @@ -796,6 +906,7 @@ static const struct mtk_dpi_conf mt8173_conf = {
> > .max_clock_khz = 300000,
> > .output_fmts = mt8173_output_fmts,
> > .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> > + .is_dpintf = false,
>
> Global variable is defualt zero, so remove this.
Done.
>
> > };
> >
> > static const struct mtk_dpi_conf mt2701_conf = {
> > @@ -805,6 +916,7 @@ static const struct mtk_dpi_conf mt2701_conf = {
> > .max_clock_khz = 150000,
> > .output_fmts = mt8173_output_fmts,
> > .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> > + .is_dpintf = false,
> > };
> >
> > static const struct mtk_dpi_conf mt8183_conf = {
> > @@ -813,6 +925,7 @@ static const struct mtk_dpi_conf mt8183_conf = {
> > .max_clock_khz = 100000,
> > .output_fmts = mt8183_output_fmts,
> > .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
> > + .is_dpintf = false,
> > };
> >
> > static const struct mtk_dpi_conf mt8192_conf = {
> > @@ -821,6 +934,12 @@ static const struct mtk_dpi_conf mt8192_conf = {
> > .max_clock_khz = 150000,
> > .output_fmts = mt8173_output_fmts,
> > .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> > + .is_dpintf = false,
> > +};
> > +
> > +static const struct mtk_dpi_conf mt8195_dpintf_conf = {
> > + .cal_factor = mt8195_dpintf_calculate_factor,
> > + .is_dpintf = true,
> > };
> >
> > static int mtk_dpi_probe(struct platform_device *pdev)
> > @@ -866,13 +985,16 @@ static int mtk_dpi_probe(struct platform_device *pdev)
> > return ret;
> > }
> >
> > - dpi->engine_clk = devm_clk_get(dev, "engine");
> > - if (IS_ERR(dpi->engine_clk)) {
> > - ret = PTR_ERR(dpi->engine_clk);
> > - if (ret != -EPROBE_DEFER)
> > - dev_err(dev, "Failed to get engine clock: %d\n", ret);
> > + if (!dpi->conf->is_dpintf) {
> > + dpi->engine_clk = devm_clk_get(dev, "engine");
> > + if (IS_ERR(dpi->engine_clk)) {
> > + ret = PTR_ERR(dpi->engine_clk);
> > + if (ret != -EPROBE_DEFER)
> > + dev_err(dev, "Failed to get engine clock: %d\n",
> > + ret);
> >
> > - return ret;
> > + return ret;
> > + }
> > }
> >
> > dpi->pixel_clk = devm_clk_get(dev, "pixel");
> > @@ -893,6 +1015,24 @@ static int mtk_dpi_probe(struct platform_device *pdev)
> > return ret;
> > }
> >
> > + dpi->hf_fmm_clk = devm_clk_get_optional(dev, "hf_fmm");
> > + if (IS_ERR(dpi->hf_fmm_clk)) {
> > + ret = PTR_ERR(dpi->hf_fmm_clk);
> > + if (ret != -EPROBE_DEFER)
> > + dev_err(dev, "Failed to get hf_fmm clock: %d\n", ret);
> > +
> > + return ret;
> > + }
> > +
> > + dpi->hf_fdp_clk = devm_clk_get_optional(dev, "hf_fdp");
> > + if (IS_ERR(dpi->hf_fdp_clk)) {
> > + ret = PTR_ERR(dpi->hf_fdp_clk);
> > + if (ret != -EPROBE_DEFER)
> > + dev_err(dev, "Failed to get hf_fdp clock: %d\n", ret);
> > +
> > + return ret;
> > + }
>
> You does not send the device tree patch, so I found one in chromium
> gerrit [1]. Compare the clock of disp_dpi1 with dp_intf1, I think
> hf_fdp is likely the pixel clock and hf_fmm is likely the engine
> clock. Could you provide the information of the function of each
> clock?
Thank you. I checked with the original author and can now confirm that
they can be mapped to engine and pixel clock. I fixed that. Also the now
fdp_clk is the direct parent of the current pixel clock, so there was no
need for it. So basically it is now reduced to the clocks of the
original dpi driver again. That also means that I am removing the
separate binding document as there is no difference other than the name
of the block.
Thank you for your feedback Chun-Kuang.
Best,
Markus
>
> [1] https://chromium.googlesource.com/chromiumos/third_party/kernel/+/refs/changes/99/2781499/219/arch/arm64/boot/dts/mediatek/mt8195.dtsi#3499
>
> Regards,
> Chun-Kuang.
>
> > +
> > dpi->irq = platform_get_irq(pdev, 0);
> > if (dpi->irq <= 0)
> > return -EINVAL;
> > @@ -906,7 +1046,10 @@ static int mtk_dpi_probe(struct platform_device *pdev)
> >
> > platform_set_drvdata(pdev, dpi);
> >
> > - dpi->bridge.funcs = &mtk_dpi_bridge_funcs;
> > + if (dpi->conf->is_dpintf)
> > + dpi->bridge.funcs = &mtk_dpintf_bridge_funcs;
> > + else
> > + dpi->bridge.funcs = &mtk_dpi_bridge_funcs;
> > dpi->bridge.of_node = dev->of_node;
> > dpi->bridge.type = DRM_MODE_CONNECTOR_DPI;
> >
> > @@ -945,6 +1088,9 @@ static const struct of_device_id mtk_dpi_of_ids[] = {
> > { .compatible = "mediatek,mt8192-dpi",
> > .data = &mt8192_conf,
> > },
> > + { .compatible = "mediatek,mt8195-dpintf",
> > + .data = &mt8195_dpintf_conf,
> > + },
> > { },
> > };
> > MODULE_DEVICE_TABLE(of, mtk_dpi_of_ids);
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > index 3a02fabe1662..72efe6ee2584 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > @@ -40,10 +40,14 @@
> > #define FAKE_DE_LEVEN BIT(21)
> > #define FAKE_DE_RODD BIT(22)
> > #define FAKE_DE_REVEN BIT(23)
> > +#define DPINTF_YUV422_EN BIT(24)
> > +#define DPINTF_INPUT_2P_EN BIT(29)
> >
> > #define DPI_OUTPUT_SETTING 0x14
> > #define CH_SWAP 0
> > +#define DPINTF_CH_SWAP BIT(1)
> > #define CH_SWAP_MASK (0x7 << 0)
> > +#define DPINTF_CH_SWAP_MASK (0x7 << 1)
> > #define SWAP_RGB 0x00
> > #define SWAP_GBR 0x01
> > #define SWAP_BRG 0x02
> > @@ -80,8 +84,10 @@
> > #define DPI_SIZE 0x18
> > #define HSIZE 0
> > #define HSIZE_MASK (0x1FFF << 0)
> > +#define DPINTF_HSIZE_MASK (0xFFFF << 0)
> > #define VSIZE 16
> > #define VSIZE_MASK (0x1FFF << 16)
> > +#define DPINTF_VSIZE_MASK (0xFFFF << 16)
> >
> > #define DPI_DDR_SETTING 0x1C
> > #define DDR_EN BIT(0)
> > @@ -93,24 +99,30 @@
> > #define DPI_TGEN_HWIDTH 0x20
> > #define HPW 0
> > #define HPW_MASK (0xFFF << 0)
> > +#define DPINTF_HPW_MASK (0xFFFF << 0)
> >
> > #define DPI_TGEN_HPORCH 0x24
> > #define HBP 0
> > #define HBP_MASK (0xFFF << 0)
> > +#define DPINTF_HBP_MASK (0xFFFF << 0)
> > #define HFP 16
> > #define HFP_MASK (0xFFF << 16)
> > +#define DPINTF_HFP_MASK (0xFFFF << 16)
> >
> > #define DPI_TGEN_VWIDTH 0x28
> > #define DPI_TGEN_VPORCH 0x2C
> >
> > #define VSYNC_WIDTH_SHIFT 0
> > #define VSYNC_WIDTH_MASK (0xFFF << 0)
> > +#define DPINTF_VSYNC_WIDTH_MASK (0xFFFF << 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 DPINTF_VSYNC_BACK_PORCH_MASK (0xFFFF << 0)
> > #define VSYNC_FRONT_PORCH_SHIFT 16
> > #define VSYNC_FRONT_PORCH_MASK (0xFFF << 16)
> > +#define DPINTF_VSYNC_FRONT_PORCH_MASK (0xFFFF << 16)
> >
> > #define DPI_BG_HCNTL 0x30
> > #define BG_RIGHT (0x1FFF << 0)
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > index 99cbf44463e4..da9e059312a5 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > @@ -317,6 +317,7 @@ static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = {
> > [MTK_DISP_UFOE] = "ufoe",
> > [MTK_DSI] = "dsi",
> > [MTK_DPI] = "dpi",
> > + [MTK_DP_INTF] = "dp-intf",
> > [MTK_DISP_PWM] = "pwm",
> > [MTK_DISP_MUTEX] = "mutex",
> > [MTK_DISP_OD] = "od",
> > @@ -339,6 +340,8 @@ static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = {
> > [DDP_COMPONENT_DITHER] = { MTK_DISP_DITHER, 0, &ddp_dither },
> > [DDP_COMPONENT_DPI0] = { MTK_DPI, 0, &ddp_dpi },
> > [DDP_COMPONENT_DPI1] = { MTK_DPI, 1, &ddp_dpi },
> > + [DDP_COMPONENT_DP_INTF0]= { MTK_DP_INTF, 0, &ddp_dpi },
> > + [DDP_COMPONENT_DP_INTF1]= { MTK_DP_INTF, 1, &ddp_dpi },
> > [DDP_COMPONENT_DSI0] = { MTK_DSI, 0, &ddp_dsi },
> > [DDP_COMPONENT_DSI1] = { MTK_DSI, 1, &ddp_dsi },
> > [DDP_COMPONENT_DSI2] = { MTK_DSI, 2, &ddp_dsi },
> > @@ -476,6 +479,7 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp,
> > type == MTK_DISP_COLOR ||
> > type == MTK_DISP_GAMMA ||
> > type == MTK_DPI ||
> > + type == MTK_DP_INTF ||
> > type == MTK_DSI ||
> > type == MTK_DISP_OVL ||
> > type == MTK_DISP_OVL_2L ||
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> > index bb914d976cf5..ee9d853cfa1c 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> > @@ -30,6 +30,7 @@ enum mtk_ddp_comp_type {
> > MTK_DISP_UFOE,
> > MTK_DSI,
> > MTK_DPI,
> > + MTK_DP_INTF,
> > MTK_DISP_PWM,
> > MTK_DISP_MUTEX,
> > MTK_DISP_OD,
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> > index aec39724ebeb..1ff4e31c8634 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> > @@ -459,6 +459,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
> > .data = (void *)MTK_DPI },
> > { .compatible = "mediatek,mt8183-dpi",
> > .data = (void *)MTK_DPI },
> > + { .compatible = "mediatek,mt8195-dpintf",
> > + .data = (void *)MTK_DP_INTF },
> > { .compatible = "mediatek,mt2701-disp-mutex",
> > .data = (void *)MTK_DISP_MUTEX },
> > { .compatible = "mediatek,mt2712-disp-mutex",
> > @@ -569,7 +571,8 @@ static int mtk_drm_probe(struct platform_device *pdev)
> > comp_type == MTK_DISP_OVL_2L ||
> > comp_type == MTK_DISP_RDMA ||
> > comp_type == MTK_DSI ||
> > - comp_type == MTK_DPI) {
> > + comp_type == MTK_DPI ||
> > + comp_type == MTK_DP_INTF) {
> > dev_info(dev, "Adding component match for %pOF\n",
> > node);
> > drm_of_component_match_add(dev, &match, compare_of,
> > --
> > 2.33.0
> >
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