Re: [PATCH 3/7] drm/meson: split out encoder from meson_dw_hdmi

From: Neil Armstrong
Date: Fri Oct 15 2021 - 03:55:10 EST

Hi,

On 14/10/2021 20:07, Sam Ravnborg wrote:
> Hi Neil,
>
> I did not verify all the code movements - but it looked correct from a
> quick glance.
> A few comments below, especially the use of mode_set() should be
> addressed as it is deprecated.

I was not sure about mode_set, will move to atomic_enable and address all the other comments,

Thanks,
Neil

>
> Sam
>
> On Thu, Oct 14, 2021 at 05:26:02PM +0200, Neil Armstrong wrote:
>> This moves all the non-DW-HDMI code where it should be:
>> an encoder in the drm/meson core driver.
>>
>> The bridge functions are copied as-is, the encoder init uses the
>> simple kms helper and for now the bridge attach flags is 0.
>>
>> The meson dw-hdmi glue is slighly fixed to live without the
>> encoder in the same driver.
>>
>> Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/meson/Makefile | 1 +
>> drivers/gpu/drm/meson/meson_drv.c | 5 +
>> drivers/gpu/drm/meson/meson_dw_hdmi.c | 341 ++-----------------
>> drivers/gpu/drm/meson/meson_encoder_hdmi.c | 359 +++++++++++++++++++++
>> drivers/gpu/drm/meson/meson_encoder_hdmi.h | 12 +
>> 5 files changed, 396 insertions(+), 322 deletions(-)
>> create mode 100644 drivers/gpu/drm/meson/meson_encoder_hdmi.c
>> create mode 100644 drivers/gpu/drm/meson/meson_encoder_hdmi.h
>>
>> diff --git a/drivers/gpu/drm/meson/Makefile b/drivers/gpu/drm/meson/Makefile
>> index 28a519cdf66b..523fce45f16b 100644
>> --- a/drivers/gpu/drm/meson/Makefile
>> +++ b/drivers/gpu/drm/meson/Makefile
>> @@ -2,6 +2,7 @@
>> meson-drm-y := meson_drv.o meson_plane.o meson_crtc.o meson_venc_cvbs.o
>> meson-drm-y += meson_viu.o meson_vpp.o meson_venc.o meson_vclk.o meson_overlay.o
>> meson-drm-y += meson_rdma.o meson_osd_afbcd.o
>> +meson-drm-y += meson_encoder_hdmi.o
>>
>> obj-$(CONFIG_DRM_MESON) += meson-drm.o
>> obj-$(CONFIG_DRM_MESON_DW_HDMI) += meson_dw_hdmi.o
>> diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
>> index b53606d8825f..0a28a8e29d63 100644
>> --- a/drivers/gpu/drm/meson/meson_drv.c
>> +++ b/drivers/gpu/drm/meson/meson_drv.c
>> @@ -32,6 +32,7 @@
>> #include "meson_osd_afbcd.h"
>> #include "meson_registers.h"
>> #include "meson_venc_cvbs.h"
>> +#include "meson_encoder_hdmi.h"
>> #include "meson_viu.h"
>> #include "meson_vpp.h"
>> #include "meson_rdma.h"
>> @@ -319,6 +320,10 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
>> }
>> }
>>
>> + ret = meson_encoder_hdmi_init(priv);
>> + if (ret)
>> + goto free_drm;
>> +
>> ret = meson_plane_create(priv);
>> if (ret)
>> goto free_drm;
>> diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
>> index 2ed87cfdd735..c2480b3335ac 100644
>> --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
>> +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
>> @@ -22,14 +22,11 @@
>> #include <drm/drm_probe_helper.h>
>> #include <drm/drm_print.h>
>>
>> -#include <linux/media-bus-format.h>
>> #include <linux/videodev2.h>
>>
>> #include "meson_drv.h"
>> #include "meson_dw_hdmi.h"
>> #include "meson_registers.h"
>> -#include "meson_vclk.h"
>> -#include "meson_venc.h"
>>
>> #define DRIVER_NAME "meson-dw-hdmi"
>> #define DRIVER_DESC "Amlogic Meson HDMI-TX DRM driver"
>> @@ -135,8 +132,6 @@ struct meson_dw_hdmi_data {
>> };
>>
>> struct meson_dw_hdmi {
>> - struct drm_encoder encoder;
>> - struct drm_bridge bridge;
>> struct dw_hdmi_plat_data dw_plat_data;
>> struct meson_drm *priv;
>> struct device *dev;
>> @@ -148,12 +143,8 @@ struct meson_dw_hdmi {
>> struct regulator *hdmi_supply;
>> u32 irq_stat;
>> struct dw_hdmi *hdmi;
>> - unsigned long output_bus_fmt;
>> + struct drm_bridge *bridge;
>> };
>> -#define encoder_to_meson_dw_hdmi(x) \
>> - container_of(x, struct meson_dw_hdmi, encoder)
>> -#define bridge_to_meson_dw_hdmi(x) \
>> - container_of(x, struct meson_dw_hdmi, bridge)
>>
>> static inline int dw_hdmi_is_compatible(struct meson_dw_hdmi *dw_hdmi,
>> const char *compat)
>> @@ -295,14 +286,14 @@ static inline void dw_hdmi_dwc_write_bits(struct meson_dw_hdmi *dw_hdmi,
>>
>> /* Setup PHY bandwidth modes */
>> static void meson_hdmi_phy_setup_mode(struct meson_dw_hdmi *dw_hdmi,
>> - const struct drm_display_mode *mode)
>> + const struct drm_display_mode *mode,
>> + bool mode_is_420)
>> {
>> struct meson_drm *priv = dw_hdmi->priv;
>> unsigned int pixel_clock = mode->clock;
>>
>> /* For 420, pixel clock is half unlike venc clock */
>> - if (dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
>> - pixel_clock /= 2;
>> + if (mode_is_420) pixel_clock /= 2;
>>
>> if (dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxl-dw-hdmi") ||
>> dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxm-dw-hdmi")) {
>> @@ -374,68 +365,25 @@ static inline void meson_dw_hdmi_phy_reset(struct meson_dw_hdmi *dw_hdmi)
>> mdelay(2);
>> }
>>
>> -static void dw_hdmi_set_vclk(struct meson_dw_hdmi *dw_hdmi,
>> - const struct drm_display_mode *mode)
>> -{
>> - struct meson_drm *priv = dw_hdmi->priv;
>> - int vic = drm_match_cea_mode(mode);
>> - unsigned int phy_freq;
>> - unsigned int vclk_freq;
>> - unsigned int venc_freq;
>> - unsigned int hdmi_freq;
>> -
>> - vclk_freq = mode->clock;
>> -
>> - /* For 420, pixel clock is half unlike venc clock */
>> - if (dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
>> - vclk_freq /= 2;
>> -
>> - /* TMDS clock is pixel_clock * 10 */
>> - phy_freq = vclk_freq * 10;
>> -
>> - if (!vic) {
>> - meson_vclk_setup(priv, MESON_VCLK_TARGET_DMT, phy_freq,
>> - vclk_freq, vclk_freq, vclk_freq, false);
>> - return;
>> - }
>> -
>> - /* 480i/576i needs global pixel doubling */
>> - if (mode->flags & DRM_MODE_FLAG_DBLCLK)
>> - vclk_freq *= 2;
>> -
>> - venc_freq = vclk_freq;
>> - hdmi_freq = vclk_freq;
>> -
>> - /* VENC double pixels for 1080i, 720p and YUV420 modes */
>> - if (meson_venc_hdmi_venc_repeat(vic) ||
>> - dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
>> - venc_freq *= 2;
>> -
>> - vclk_freq = max(venc_freq, hdmi_freq);
>> -
>> - if (mode->flags & DRM_MODE_FLAG_DBLCLK)
>> - venc_freq /= 2;
>> -
>> - DRM_DEBUG_DRIVER("vclk:%d phy=%d venc=%d hdmi=%d enci=%d\n",
>> - phy_freq, vclk_freq, venc_freq, hdmi_freq,
>> - priv->venc.hdmi_use_enci);
>> -
>> - meson_vclk_setup(priv, MESON_VCLK_TARGET_HDMI, phy_freq, vclk_freq,
>> - venc_freq, hdmi_freq, priv->venc.hdmi_use_enci);
>> -}
>> -
>> static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data,
>> const struct drm_display_info *display,
>> const struct drm_display_mode *mode)
>> {
>> struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data;
>> + bool is_hdmi2_sink = display->hdmi.scdc.supported;
>> struct meson_drm *priv = dw_hdmi->priv;
>> unsigned int wr_clk =
>> readl_relaxed(priv->io_base + _REG(VPU_HDMI_SETTING));
>> + bool mode_is_420 = false;
>>
>> DRM_DEBUG_DRIVER("\"%s\" div%d\n", mode->name,
>> mode->clock > 340000 ? 40 : 10);
>>
>> + if (drm_mode_is_420_only(display, mode) ||
>> + (!is_hdmi2_sink &&
>> + drm_mode_is_420_also(display, mode)))
>> + mode_is_420 = true;
>> +
>> /* Enable clocks */
>> regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, 0xffff, 0x100);
>>
>> @@ -457,8 +405,7 @@ static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data,
>> dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_BIST_CNTL, BIT(12));
>>
>> /* TMDS pattern setup */
>> - if (mode->clock > 340000 &&
>> - dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_YUV8_1X24) {
>> + if (mode->clock > 340000 && !mode_is_420) {
>> dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_01,
>> 0);
>> dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_23,
>> @@ -476,7 +423,7 @@ static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data,
>> dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_CNTL, 0x2);
>>
>> /* Setup PHY parameters */
>> - meson_hdmi_phy_setup_mode(dw_hdmi, mode);
>> + meson_hdmi_phy_setup_mode(dw_hdmi, mode, mode_is_420);
>>
>> /* Setup PHY */
>> regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1,
>> @@ -622,214 +569,15 @@ static irqreturn_t dw_hdmi_top_thread_irq(int irq, void *dev_id)
>> dw_hdmi_setup_rx_sense(dw_hdmi->hdmi, hpd_connected,
>> hpd_connected);
>>
>> - drm_helper_hpd_irq_event(dw_hdmi->encoder.dev);
>> + drm_helper_hpd_irq_event(dw_hdmi->bridge->dev);
>> + drm_bridge_hpd_notify(dw_hdmi->bridge,
>> + hpd_connected ? connector_status_connected
>> + : connector_status_disconnected);
>> }
>>
>> return IRQ_HANDLED;
>> }
>>
>> -static enum drm_mode_status
>> -dw_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,
>> - const struct drm_display_info *display_info,
>> - const struct drm_display_mode *mode)
>> -{
>> - struct meson_dw_hdmi *dw_hdmi = data;
>> - struct meson_drm *priv = dw_hdmi->priv;
>> - bool is_hdmi2_sink = display_info->hdmi.scdc.supported;
>> - unsigned int phy_freq;
>> - unsigned int vclk_freq;
>> - unsigned int venc_freq;
>> - unsigned int hdmi_freq;
>> - int vic = drm_match_cea_mode(mode);
>> - enum drm_mode_status status;
>> -
>> - DRM_DEBUG_DRIVER("Modeline " DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
>> -
>> - /* If sink does not support 540MHz, reject the non-420 HDMI2 modes */
>> - if (display_info->max_tmds_clock &&
>> - mode->clock > display_info->max_tmds_clock &&
>> - !drm_mode_is_420_only(display_info, mode) &&
>> - !drm_mode_is_420_also(display_info, mode))
>> - return MODE_BAD;
>> -
>> - /* Check against non-VIC supported modes */
>> - if (!vic) {
>> - status = meson_venc_hdmi_supported_mode(mode);
>> - if (status != MODE_OK)
>> - return status;
>> -
>> - return meson_vclk_dmt_supported_freq(priv, mode->clock);
>> - /* Check against supported VIC modes */
>> - } else if (!meson_venc_hdmi_supported_vic(vic))
>> - return MODE_BAD;
>> -
>> - vclk_freq = mode->clock;
>> -
>> - /* For 420, pixel clock is half unlike venc clock */
>> - if (drm_mode_is_420_only(display_info, mode) ||
>> - (!is_hdmi2_sink &&
>> - drm_mode_is_420_also(display_info, mode)))
>> - vclk_freq /= 2;
>> -
>> - /* TMDS clock is pixel_clock * 10 */
>> - phy_freq = vclk_freq * 10;
>> -
>> - /* 480i/576i needs global pixel doubling */
>> - if (mode->flags & DRM_MODE_FLAG_DBLCLK)
>> - vclk_freq *= 2;
>> -
>> - venc_freq = vclk_freq;
>> - hdmi_freq = vclk_freq;
>> -
>> - /* VENC double pixels for 1080i, 720p and YUV420 modes */
>> - if (meson_venc_hdmi_venc_repeat(vic) ||
>> - drm_mode_is_420_only(display_info, mode) ||
>> - (!is_hdmi2_sink &&
>> - drm_mode_is_420_also(display_info, mode)))
>> - venc_freq *= 2;
>> -
>> - vclk_freq = max(venc_freq, hdmi_freq);
>> -
>> - if (mode->flags & DRM_MODE_FLAG_DBLCLK)
>> - venc_freq /= 2;
>> -
>> - dev_dbg(dw_hdmi->dev, "%s: vclk:%d phy=%d venc=%d hdmi=%d\n",
>> - __func__, phy_freq, vclk_freq, venc_freq, hdmi_freq);
>> -
>> - return meson_vclk_vic_supported_freq(priv, phy_freq, vclk_freq);
>> -}
>> -
>> -/* Encoder */
>> -
>> -static const u32 meson_dw_hdmi_out_bus_fmts[] = {
>> - MEDIA_BUS_FMT_YUV8_1X24,
>> - MEDIA_BUS_FMT_UYYVYY8_0_5X24,
>> -};
>> -
>> -static void meson_venc_hdmi_encoder_destroy(struct drm_encoder *encoder)
>> -{
>> - drm_encoder_cleanup(encoder);
>> -}
>> -
>> -static const struct drm_encoder_funcs meson_venc_hdmi_encoder_funcs = {
>> - .destroy = meson_venc_hdmi_encoder_destroy,
>> -};
>> -
>> -static u32 *
>> -meson_venc_hdmi_encoder_get_inp_bus_fmts(struct drm_bridge *bridge,
>> - struct drm_bridge_state *bridge_state,
>> - struct drm_crtc_state *crtc_state,
>> - struct drm_connector_state *conn_state,
>> - u32 output_fmt,
>> - unsigned int *num_input_fmts)
>> -{
>> - u32 *input_fmts = NULL;
>> - int i;
>> -
>> - *num_input_fmts = 0;
>> -
>> - for (i = 0 ; i < ARRAY_SIZE(meson_dw_hdmi_out_bus_fmts) ; ++i) {
>> - if (output_fmt == meson_dw_hdmi_out_bus_fmts[i]) {
>> - *num_input_fmts = 1;
>> - input_fmts = kcalloc(*num_input_fmts,
>> - sizeof(*input_fmts),
>> - GFP_KERNEL);
>> - if (!input_fmts)
>> - return NULL;
>> -
>> - input_fmts[0] = output_fmt;
>> -
>> - break;
>> - }
>> - }
>> -
>> - return input_fmts;
>> -}
>> -
>> -static int meson_venc_hdmi_encoder_atomic_check(struct drm_bridge *bridge,
>> - struct drm_bridge_state *bridge_state,
>> - struct drm_crtc_state *crtc_state,
>> - struct drm_connector_state *conn_state)
>> -{
>> - struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
>> -
>> - dw_hdmi->output_bus_fmt = bridge_state->output_bus_cfg.format;
>> -
>> - DRM_DEBUG_DRIVER("output_bus_fmt %lx\n", dw_hdmi->output_bus_fmt);
>> -
>> - return 0;
>> -}
>> -
>> -static void meson_venc_hdmi_encoder_disable(struct drm_bridge *bridge)
>> -{
>> - struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
>> - struct meson_drm *priv = dw_hdmi->priv;
>> -
>> - DRM_DEBUG_DRIVER("\n");
>> -
>> - writel_bits_relaxed(0x3, 0,
>> - priv->io_base + _REG(VPU_HDMI_SETTING));
>> -
>> - writel_relaxed(0, priv->io_base + _REG(ENCI_VIDEO_EN));
>> - writel_relaxed(0, priv->io_base + _REG(ENCP_VIDEO_EN));
>> -}
>> -
>> -static void meson_venc_hdmi_encoder_enable(struct drm_bridge *bridge)
>> -{
>> - struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
>> - struct meson_drm *priv = dw_hdmi->priv;
>> -
>> - DRM_DEBUG_DRIVER("%s\n", priv->venc.hdmi_use_enci ? "VENCI" : "VENCP");
>> -
>> - if (priv->venc.hdmi_use_enci)
>> - writel_relaxed(1, priv->io_base + _REG(ENCI_VIDEO_EN));
>> - else
>> - writel_relaxed(1, priv->io_base + _REG(ENCP_VIDEO_EN));
>> -}
>> -
>> -static void meson_venc_hdmi_encoder_mode_set(struct drm_bridge *bridge,
>> - const struct drm_display_mode *mode,
>> - const struct drm_display_mode *adjusted_mode)
>> -{
>> - struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
>> - struct meson_drm *priv = dw_hdmi->priv;
>> - int vic = drm_match_cea_mode(mode);
>> - unsigned int ycrcb_map = VPU_HDMI_OUTPUT_CBYCR;
>> - bool yuv420_mode = false;
>> -
>> - DRM_DEBUG_DRIVER("\"%s\" vic %d\n", mode->name, vic);
>> -
>> - if (dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24) {
>> - ycrcb_map = VPU_HDMI_OUTPUT_CRYCB;
>> - yuv420_mode = true;
>> - }
>> -
>> - /* VENC + VENC-DVI Mode setup */
>> - meson_venc_hdmi_mode_set(priv, vic, ycrcb_map, yuv420_mode, mode);
>> -
>> - /* VCLK Set clock */
>> - dw_hdmi_set_vclk(dw_hdmi, mode);
>> -
>> - if (dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
>> - /* Setup YUV420 to HDMI-TX, no 10bit diphering */
>> - writel_relaxed(2 | (2 << 2),
>> - priv->io_base + _REG(VPU_HDMI_FMT_CTRL));
>> - else
>> - /* Setup YUV444 to HDMI-TX, no 10bit diphering */
>> - writel_relaxed(0, priv->io_base + _REG(VPU_HDMI_FMT_CTRL));
>> -}
>> -
>> -static const struct drm_bridge_funcs meson_venc_hdmi_encoder_bridge_funcs = {
>> - .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
>> - .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
>> - .atomic_get_input_bus_fmts = meson_venc_hdmi_encoder_get_inp_bus_fmts,
>> - .atomic_reset = drm_atomic_helper_bridge_reset,
>> - .atomic_check = meson_venc_hdmi_encoder_atomic_check,
>> - .enable = meson_venc_hdmi_encoder_enable,
>> - .disable = meson_venc_hdmi_encoder_disable,
>> - .mode_set = meson_venc_hdmi_encoder_mode_set,
>> -};
>> -
>> /* DW HDMI Regmap */
>>
>> static int meson_dw_hdmi_reg_read(void *context, unsigned int reg,
>> @@ -876,28 +624,6 @@ static const struct meson_dw_hdmi_data meson_dw_hdmi_g12a_data = {
>> .dwc_write = dw_hdmi_g12a_dwc_write,
>> };
>>
>> -static bool meson_hdmi_connector_is_available(struct device *dev)
>> -{
>> - struct device_node *ep, *remote;
>> -
>> - /* HDMI Connector is on the second port, first endpoint */
>> - ep = of_graph_get_endpoint_by_regs(dev->of_node, 1, 0);
>> - if (!ep)
>> - return false;
>> -
>> - /* If the endpoint node exists, consider it enabled */
>> - remote = of_graph_get_remote_port(ep);
>> - if (remote) {
>> - of_node_put(ep);
>> - return true;
>> - }
>> -
>> - of_node_put(ep);
>> - of_node_put(remote);
>> -
>> - return false;
>> -}
>> -
>> static void meson_dw_hdmi_init(struct meson_dw_hdmi *meson_dw_hdmi)
>> {
>> struct meson_drm *priv = meson_dw_hdmi->priv;
>> @@ -976,19 +702,12 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>> struct drm_device *drm = data;
>> struct meson_drm *priv = drm->dev_private;
>> struct dw_hdmi_plat_data *dw_plat_data;
>> - struct drm_bridge *next_bridge;
>> - struct drm_encoder *encoder;
>> struct resource *res;
>> int irq;
>> int ret;
>>
>> DRM_DEBUG_DRIVER("\n");
>>
>> - if (!meson_hdmi_connector_is_available(dev)) {
>> - dev_info(drm->dev, "HDMI Output connector not available\n");
>> - return -ENODEV;
>> - }
>> -
>> match = of_device_get_match_data(&pdev->dev);
>> if (!match) {
>> dev_err(&pdev->dev, "failed to get match data\n");
>> @@ -1004,7 +723,6 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>> meson_dw_hdmi->dev = dev;
>> meson_dw_hdmi->data = match;
>> dw_plat_data = &meson_dw_hdmi->dw_plat_data;
>> - encoder = &meson_dw_hdmi->encoder;
>>
>> meson_dw_hdmi->hdmi_supply = devm_regulator_get_optional(dev, "hdmi");
>> if (IS_ERR(meson_dw_hdmi->hdmi_supply)) {
>> @@ -1076,28 +794,11 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>> return ret;
>> }
>>
>> - /* Encoder */
>> -
>> - ret = drm_encoder_init(drm, encoder, &meson_venc_hdmi_encoder_funcs,
>> - DRM_MODE_ENCODER_TMDS, "meson_hdmi");
>> - if (ret) {
>> - dev_err(priv->dev, "Failed to init HDMI encoder\n");
>> - return ret;
>> - }
>> -
>> - meson_dw_hdmi->bridge.funcs = &meson_venc_hdmi_encoder_bridge_funcs;
>> - drm_bridge_attach(encoder, &meson_dw_hdmi->bridge, NULL, 0);
>> -
>> - encoder->possible_crtcs = BIT(0);
>> -
>> meson_dw_hdmi_init(meson_dw_hdmi);
>>
>> - DRM_DEBUG_DRIVER("encoder initialized\n");
>> -
>> /* Bridge / Connector */
>>
>> dw_plat_data->priv_data = meson_dw_hdmi;
>> - dw_plat_data->mode_valid = dw_hdmi_mode_valid;
>> dw_plat_data->phy_ops = &meson_dw_hdmi_phy_ops;
>> dw_plat_data->phy_name = "meson_dw_hdmi_phy";
>> dw_plat_data->phy_data = meson_dw_hdmi;
>> @@ -1112,15 +813,11 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>>
>> platform_set_drvdata(pdev, meson_dw_hdmi);
>>
>> - meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev,
>> - &meson_dw_hdmi->dw_plat_data);
>> + meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev, &meson_dw_hdmi->dw_plat_data);
>> if (IS_ERR(meson_dw_hdmi->hdmi))
>> return PTR_ERR(meson_dw_hdmi->hdmi);
>>
>> - next_bridge = of_drm_find_bridge(pdev->dev.of_node);
>> - if (next_bridge)
>> - drm_bridge_attach(encoder, next_bridge,
>> - &meson_dw_hdmi->bridge, 0);
>> + meson_dw_hdmi->bridge = of_drm_find_bridge(pdev->dev.of_node);
>>
>> DRM_DEBUG_DRIVER("HDMI controller initialized\n");
>>
>> diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
>> new file mode 100644
>> index 000000000000..c775a1ab5b1e
>> --- /dev/null
>> +++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
>> @@ -0,0 +1,359 @@
>> +// SPDX-License-Identifier: GPL-2.0-or-later
>> +/*
>> + * Copyright (C) 2016 BayLibre, SAS
>> + * Author: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
>> + * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
>> + */
>> +
>> +#include <linux/clk.h>
>> +#include <linux/component.h>
>> +#include <linux/kernel.h>
>> +#include <linux/module.h>
>> +#include <linux/of_device.h>
>> +#include <linux/of_graph.h>
>> +#include <linux/regulator/consumer.h>
>> +#include <linux/reset.h>
>> +
>> +#include <drm/drm_atomic_helper.h>
>> +#include <drm/drm_simple_kms_helper.h>
> alphabetic order.
>> +#include <drm/drm_bridge.h>
>> +#include <drm/drm_device.h>
>> +#include <drm/drm_edid.h>
>> +#include <drm/drm_probe_helper.h>
>> +#include <drm/drm_print.h>
>> +
>> +#include <linux/media-bus-format.h>
>> +#include <linux/videodev2.h>
>> +
>> +#include "meson_drv.h"
>> +#include "meson_registers.h"
>> +#include "meson_vclk.h"
>> +#include "meson_venc.h"
>> +
>> +struct meson_encoder_hdmi {
>> + struct drm_encoder encoder;
>> + struct drm_bridge bridge;
>> + struct drm_bridge *next_bridge;
>> + struct meson_drm *priv;
>> + unsigned long output_bus_fmt;
>> +};
>> +
>> +#define bridge_to_meson_encoder_hdmi(x) \
>> + container_of(x, struct meson_encoder_hdmi, bridge)
>> +
>> +static int meson_encoder_hdmi_attach(struct drm_bridge *bridge,
>> + enum drm_bridge_attach_flags flags)
>> +{
>> + struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge);
>> +
>> + return drm_bridge_attach(bridge->encoder, encoder_hdmi->next_bridge,
>> + &encoder_hdmi->bridge, flags);
>> +}
>> +
>> +static void meson_encoder_hdmi_enable(struct drm_bridge *bridge)
>> +{
>> + struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge);
>> + struct meson_drm *priv = encoder_hdmi->priv;
>> +
>> + DRM_DEBUG_DRIVER("%s\n", priv->venc.hdmi_use_enci ? "VENCI" : "VENCP");
> Bridge drivers mainly uses dev_xxx logging.
> New drivers do not use the deprecated DRM_ logging.
>
> This goes for all logging in this file.
> Remember to drop include of drm_print.h
>
>
>> +
>> + if (priv->venc.hdmi_use_enci)
>> + writel_relaxed(1, priv->io_base + _REG(ENCI_VIDEO_EN));
>> + else
>> + writel_relaxed(1, priv->io_base + _REG(ENCP_VIDEO_EN));
>> +}
>> +
>> +static void meson_encoder_hdmi_disable(struct drm_bridge *bridge)
>> +{
>> + struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge);
>> + struct meson_drm *priv = encoder_hdmi->priv;
>> +
>> + DRM_DEBUG_DRIVER("\n");
>> +
>> + writel_bits_relaxed(0x3, 0,
>> + priv->io_base + _REG(VPU_HDMI_SETTING));
>> +
>> + writel_relaxed(0, priv->io_base + _REG(ENCI_VIDEO_EN));
>> + writel_relaxed(0, priv->io_base + _REG(ENCP_VIDEO_EN));
>> +}
>> +
>> +static void meson_encoder_hdmi_set_vclk(struct meson_encoder_hdmi *encoder_hdmi,
>> + const struct drm_display_mode *mode)
>> +{
>> + struct meson_drm *priv = encoder_hdmi->priv;
>> + int vic = drm_match_cea_mode(mode);
>> + unsigned int phy_freq;
>> + unsigned int vclk_freq;
>> + unsigned int venc_freq;
>> + unsigned int hdmi_freq;
>> +
>> + vclk_freq = mode->clock;
>> +
>> + /* For 420, pixel clock is half unlike venc clock */
>> + if (encoder_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
>> + vclk_freq /= 2;
>> +
>> + /* TMDS clock is pixel_clock * 10 */
>> + phy_freq = vclk_freq * 10;
>> +
>> + if (!vic) {
>> + meson_vclk_setup(priv, MESON_VCLK_TARGET_DMT, phy_freq,
>> + vclk_freq, vclk_freq, vclk_freq, false);
>> + return;
>> + }
>> +
>> + /* 480i/576i needs global pixel doubling */
>> + if (mode->flags & DRM_MODE_FLAG_DBLCLK)
>> + vclk_freq *= 2;
>> +
>> + venc_freq = vclk_freq;
>> + hdmi_freq = vclk_freq;
>> +
>> + /* VENC double pixels for 1080i, 720p and YUV420 modes */
>> + if (meson_venc_hdmi_venc_repeat(vic) ||
>> + encoder_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
>> + venc_freq *= 2;
>> +
>> + vclk_freq = max(venc_freq, hdmi_freq);
>> +
>> + if (mode->flags & DRM_MODE_FLAG_DBLCLK)
>> + venc_freq /= 2;
>> +
>> + DRM_DEBUG_DRIVER("vclk:%d phy=%d venc=%d hdmi=%d enci=%d\n",
>> + phy_freq, vclk_freq, venc_freq, hdmi_freq,
>> + priv->venc.hdmi_use_enci);
>> +
>> + meson_vclk_setup(priv, MESON_VCLK_TARGET_HDMI, phy_freq, vclk_freq,
>> + venc_freq, hdmi_freq, priv->venc.hdmi_use_enci);
>> +}
>> +
>> +static enum drm_mode_status meson_encoder_hdmi_mode_valid(struct drm_bridge *bridge,
>> + const struct drm_display_info *display_info,
>> + const struct drm_display_mode *mode)
>> +{
>> + struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge);
>> + struct meson_drm *priv = encoder_hdmi->priv;
>> + bool is_hdmi2_sink = display_info->hdmi.scdc.supported;
>> + unsigned int phy_freq;
>> + unsigned int vclk_freq;
>> + unsigned int venc_freq;
>> + unsigned int hdmi_freq;
>> + int vic = drm_match_cea_mode(mode);
>> + enum drm_mode_status status;
>> +
>> + DRM_DEBUG_DRIVER("Modeline " DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
>> +
>> + /* If sink does not support 540MHz, reject the non-420 HDMI2 modes */
>> + if (display_info->max_tmds_clock &&
>> + mode->clock > display_info->max_tmds_clock &&
>> + !drm_mode_is_420_only(display_info, mode) &&
>> + !drm_mode_is_420_also(display_info, mode))
>> + return MODE_BAD;
>> +
>> + /* Check against non-VIC supported modes */
>> + if (!vic) {
>> + status = meson_venc_hdmi_supported_mode(mode);
>> + if (status != MODE_OK)
>> + return status;
>> +
>> + return meson_vclk_dmt_supported_freq(priv, mode->clock);
>> + /* Check against supported VIC modes */
>> + } else if (!meson_venc_hdmi_supported_vic(vic))
>> + return MODE_BAD;
>> +
>> + vclk_freq = mode->clock;
>> +
>> + /* For 420, pixel clock is half unlike venc clock */
>> + if (drm_mode_is_420_only(display_info, mode) ||
>> + (!is_hdmi2_sink &&
>> + drm_mode_is_420_also(display_info, mode)))
>> + vclk_freq /= 2;
>> +
>> + /* TMDS clock is pixel_clock * 10 */
>> + phy_freq = vclk_freq * 10;
>> +
>> + /* 480i/576i needs global pixel doubling */
>> + if (mode->flags & DRM_MODE_FLAG_DBLCLK)
>> + vclk_freq *= 2;
>> +
>> + venc_freq = vclk_freq;
>> + hdmi_freq = vclk_freq;
>> +
>> + /* VENC double pixels for 1080i, 720p and YUV420 modes */
>> + if (meson_venc_hdmi_venc_repeat(vic) ||
>> + drm_mode_is_420_only(display_info, mode) ||
>> + (!is_hdmi2_sink &&
>> + drm_mode_is_420_also(display_info, mode)))
>> + venc_freq *= 2;
>> +
>> + vclk_freq = max(venc_freq, hdmi_freq);
>> +
>> + if (mode->flags & DRM_MODE_FLAG_DBLCLK)
>> + venc_freq /= 2;
>> +
>> + dev_dbg(priv->dev, "%s: vclk:%d phy=%d venc=%d hdmi=%d\n",
>> + __func__, phy_freq, vclk_freq, venc_freq, hdmi_freq);
>> +
>> + return meson_vclk_vic_supported_freq(priv, phy_freq, vclk_freq);
>> +}
>> +
>> +static void meson_encoder_hdmi_mode_set(struct drm_bridge *bridge,
>> + const struct drm_display_mode *mode,
>> + const struct drm_display_mode *adjusted_mode)
>> +{
>> + struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge);
>> + struct meson_drm *priv = encoder_hdmi->priv;
>> + int vic = drm_match_cea_mode(mode);
>> + unsigned int ycrcb_map = VPU_HDMI_OUTPUT_CBYCR;
>> + bool yuv420_mode = false;
>> +
>> + DRM_DEBUG_DRIVER("\"%s\" vic %d\n", mode->name, vic);
>> +
>> + if (encoder_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24) {
>> + ycrcb_map = VPU_HDMI_OUTPUT_CRYCB;
>> + yuv420_mode = true;
>> + }
>> +
>> + /* VENC + VENC-DVI Mode setup */
>> + meson_venc_hdmi_mode_set(priv, vic, ycrcb_map, yuv420_mode, mode);
>> +
>> + /* VCLK Set clock */
>> + meson_encoder_hdmi_set_vclk(encoder_hdmi, mode);
>> +
>> + if (encoder_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
>> + /* Setup YUV420 to HDMI-TX, no 10bit diphering */
>> + writel_relaxed(2 | (2 << 2),
>> + priv->io_base + _REG(VPU_HDMI_FMT_CTRL));
>> + else
>> + /* Setup YUV444 to HDMI-TX, no 10bit diphering */
>> + writel_relaxed(0, priv->io_base + _REG(VPU_HDMI_FMT_CTRL));
>> +}
>> +
>> +static const u32 meson_encoder_hdmi_out_bus_fmts[] = {
>> + MEDIA_BUS_FMT_YUV8_1X24,
>> + MEDIA_BUS_FMT_UYYVYY8_0_5X24,
>> +};
>> +
>> +static u32 *
>> +meson_encoder_hdmi_get_inp_bus_fmts(struct drm_bridge *bridge,
>> + struct drm_bridge_state *bridge_state,
>> + struct drm_crtc_state *crtc_state,
>> + struct drm_connector_state *conn_state,
>> + u32 output_fmt,
>> + unsigned int *num_input_fmts)
>> +{
>> + u32 *input_fmts = NULL;
>> + int i;
>> +
>> + *num_input_fmts = 0;
>> +
>> + for (i = 0 ; i < ARRAY_SIZE(meson_encoder_hdmi_out_bus_fmts) ; ++i) {
>> + if (output_fmt == meson_encoder_hdmi_out_bus_fmts[i]) {
>> + *num_input_fmts = 1;
>> + input_fmts = kcalloc(*num_input_fmts,
>> + sizeof(*input_fmts),
>> + GFP_KERNEL);
> In code similar to this in a previous patch kmalloc() was used.
> Both are OK, I just noticed that the code differs.
>
>> + if (!input_fmts)
>> + return NULL;
>> +
>> + input_fmts[0] = output_fmt;
>> +
>> + break;
>> + }
>> + }
>> +
>> + return input_fmts;
>> +}
>> +
>> +static int meson_encoder_hdmi_atomic_check(struct drm_bridge *bridge,
>> + struct drm_bridge_state *bridge_state,
>> + struct drm_crtc_state *crtc_state,
>> + struct drm_connector_state *conn_state)
>> +{
>> + struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge);
>> + struct drm_connector_state *old_conn_state =
>> + drm_atomic_get_old_connector_state(conn_state->state, conn_state->connector);
>> +
>> + encoder_hdmi->output_bus_fmt = bridge_state->output_bus_cfg.format;
>> +
>> + DRM_DEBUG_DRIVER("output_bus_fmt %lx\n", encoder_hdmi->output_bus_fmt);
>> +
>> + if (!drm_connector_atomic_hdr_metadata_equal(old_conn_state, conn_state))
>> + crtc_state->mode_changed = true;
>> +
>> + return 0;
>> +}
>> +
>> +static const struct drm_bridge_funcs meson_encoder_hdmi_bridge_funcs = {
>> + .attach = meson_encoder_hdmi_attach,
>> + .enable = meson_encoder_hdmi_enable,
>> + .disable = meson_encoder_hdmi_disable,
>> + .mode_valid = meson_encoder_hdmi_mode_valid,
>> + .mode_set = meson_encoder_hdmi_mode_set,
> Use of mode_set is deprecated, new drivers shall set their mode in the
> atomic_enable operation.
>> + .atomic_get_input_bus_fmts = meson_encoder_hdmi_get_inp_bus_fmts,
>> + .atomic_check = meson_encoder_hdmi_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,
>> +};
>> +
>> +int meson_encoder_hdmi_init(struct meson_drm *priv)
>> +{
>> + struct meson_encoder_hdmi *meson_encoder_hdmi;
>> + struct device_node *remote;
>> + int ret;
>> +
>> + DRM_DEBUG_DRIVER("\n");
>> +
>> + meson_encoder_hdmi = devm_kzalloc(priv->dev, sizeof(*meson_encoder_hdmi), GFP_KERNEL);
>> + if (!meson_encoder_hdmi)
>> + return -ENOMEM;
>> +
>> + /* HDMI Transceiver Bridge */
>> + remote = of_graph_get_remote_node(priv->dev->of_node, 1, 0);
>> + if (!remote) {
>> + dev_err(priv->dev, "HDMI transceiver device is disabled");
>> + return 0;
>> + }
>> +
>> + meson_encoder_hdmi->next_bridge = of_drm_find_bridge(remote);
>> + if (!meson_encoder_hdmi->next_bridge) {
>> + dev_err(priv->dev, "Failed to find HDMI transceiver bridge\n");
>> + return -EPROBE_DEFER;
>> + }
>> +
>> + /* HDMI Encoder Bridge */
>> + meson_encoder_hdmi->bridge.funcs = &meson_encoder_hdmi_bridge_funcs;
>> + meson_encoder_hdmi->bridge.of_node = priv->dev->of_node;
>> + meson_encoder_hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
>> +
>> + drm_bridge_add(&meson_encoder_hdmi->bridge);
>> +
>> + meson_encoder_hdmi->priv = priv;
>> +
>> + /* Encoder */
>> + ret = drm_simple_encoder_init(priv->drm, &meson_encoder_hdmi->encoder,
>> + DRM_MODE_ENCODER_TMDS);
>> + if (ret) {
>> + dev_err(priv->dev, "Failed to init HDMI encoder: %d\n", ret);
>> + return ret;
>> + }
>> +
>> + meson_encoder_hdmi->encoder.possible_crtcs = BIT(0);
>> +
>> + /* Attach HDMI Encoder Bridge to Encoder */
>> + ret = drm_bridge_attach(&meson_encoder_hdmi->encoder, &meson_encoder_hdmi->bridge, NULL, 0);
>> + if (ret) {
>> + dev_err(priv->dev, "Failed to attach bridge: %d\n", ret);
>> + return ret;
>> + }
>> +
>> + /*
>> + * We should have now in place:
>> + * encoder->[hdmi encoder bridge]->[dw-hdmi bridge]->[dw-hdmi connector]
>> + */
>> +
>> + DRM_DEBUG_DRIVER("HDMI encoder initialized\n");
>> +
>> + return 0;
>> +}
>> diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.h b/drivers/gpu/drm/meson/meson_encoder_hdmi.h
>> new file mode 100644
>> index 000000000000..ed19494f0956
>> --- /dev/null
>> +++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.h
>> @@ -0,0 +1,12 @@
>> +/* SPDX-License-Identifier: GPL-2.0-or-later */
>> +/*
>> + * Copyright (C) 2021 BayLibre, SAS
>> + * Author: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
>> + */
>> +
>> +#ifndef __MESON_ENCODER_HDMI_H
>> +#define __MESON_ENCODER_HDMI_H
>> +
>> +int meson_encoder_hdmi_init(struct meson_drm *priv);
>> +
>> +#endif /* __MESON_ENCODER_HDMI_H */
>> --
>> 2.25.1