From 8f69a1607d4c30e7048d79e51d3699830f79dbb1 Mon Sep 17 00:00:00 2001 From: Keith Zhao Date: Mon, 4 Dec 2023 20:33:14 +0800 Subject: [PATCH] drm/vs: Add hdmi driver add hdmi driver as encoder and connect [jh80.chung: taken from https://patchew.org/linux/20231204123315.28456-1-keith.zhao@starfivetech.com/] Change-Id: I99939f536fcd57f87a974bb1a33f2e1418679444 Signed-off-by: Keith Zhao Signed-off-by: Jaehoon Chung --- drivers/gpu/drm/verisilicon/Kconfig | 8 + drivers/gpu/drm/verisilicon/Makefile | 1 + drivers/gpu/drm/verisilicon/starfive_hdmi.c | 849 ++++++++++++++++++++++++++++ drivers/gpu/drm/verisilicon/starfive_hdmi.h | 304 ++++++++++ drivers/gpu/drm/verisilicon/vs_drv.c | 3 + drivers/gpu/drm/verisilicon/vs_drv.h | 4 + 6 files changed, 1169 insertions(+) create mode 100644 drivers/gpu/drm/verisilicon/starfive_hdmi.c create mode 100644 drivers/gpu/drm/verisilicon/starfive_hdmi.h diff --git a/drivers/gpu/drm/verisilicon/Kconfig b/drivers/gpu/drm/verisilicon/Kconfig index e10fa97..122c786e 100644 --- a/drivers/gpu/drm/verisilicon/Kconfig +++ b/drivers/gpu/drm/verisilicon/Kconfig @@ -11,3 +11,11 @@ config DRM_VERISILICON This driver provides VeriSilicon kernel mode setting and buffer management. It does not provide 2D or 3D acceleration. + +config DRM_VERISILICON_STARFIVE_HDMI + bool "Starfive HDMI extensions" + depends on DRM_VERISILICON + help + This selects support for StarFive soc specific extensions + for the Innosilicon HDMI driver. If you want to enable + HDMI on JH7110 based soc, you should select this option. diff --git a/drivers/gpu/drm/verisilicon/Makefile b/drivers/gpu/drm/verisilicon/Makefile index bf6f2b7..71fadaf 100644 --- a/drivers/gpu/drm/verisilicon/Makefile +++ b/drivers/gpu/drm/verisilicon/Makefile @@ -6,4 +6,5 @@ vs_drm-objs := vs_dc_hw.o \ vs_drv.o \ vs_modeset.o \ vs_plane.o +vs_drm-$(CONFIG_DRM_VERISILICON_STARFIVE_HDMI) += starfive_hdmi.o obj-$(CONFIG_DRM_VERISILICON) += vs_drm.o diff --git a/drivers/gpu/drm/verisilicon/starfive_hdmi.c b/drivers/gpu/drm/verisilicon/starfive_hdmi.c new file mode 100644 index 0000000..aa621db --- /dev/null +++ b/drivers/gpu/drm/verisilicon/starfive_hdmi.c @@ -0,0 +1,849 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2023 StarFive Technology Co., Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "starfive_hdmi.h" +#include "vs_drv.h" +#include "vs_crtc.h" + +static const char * const hdmi_clocks[] = { + "sysclk", + "mclk", + "bclk" +}; + +static struct starfive_hdmi_encoder *encoder_to_hdmi(struct drm_encoder *encoder) +{ + return container_of(encoder, struct starfive_hdmi_encoder, encoder); +} + +static struct starfive_hdmi *connector_to_hdmi(struct drm_connector *connector) +{ + return container_of(connector, struct starfive_hdmi, connector); +} + +static const struct post_pll_config post_pll_cfg_table[] = { + {25200000, 1, 80, 13, 3, 1}, + {27000000, 1, 40, 11, 3, 1}, + {33750000, 1, 40, 11, 3, 1}, + {49000000, 1, 20, 1, 3, 3}, + {241700000, 1, 20, 1, 3, 3}, + {297000000, 4, 20, 0, 0, 3}, + {594000000, 4, 20, 0, 0, 0}, + { /* sentinel */ } +}; + +inline u8 hdmi_readb(struct starfive_hdmi *hdmi, u16 offset) +{ + return readl_relaxed(hdmi->regs + (offset) * 0x04); +} + +inline void hdmi_writeb(struct starfive_hdmi *hdmi, u16 offset, u32 val) +{ + writel_relaxed(val, hdmi->regs + (offset) * 0x04); +} + +inline void hdmi_writew(struct starfive_hdmi *hdmi, u16 offset, u32 val) +{ + writew_relaxed(val & 0xFF, hdmi->regs + (offset) * 0x04); + writew_relaxed((val >> 8) & 0xFF, hdmi->regs + (offset + 1) * 0x04); +} + +inline void hdmi_modb(struct starfive_hdmi *hdmi, u16 offset, + u32 msk, u32 val) +{ + u8 temp = hdmi_readb(hdmi, offset) & ~msk; + + temp |= val & msk; + hdmi_writeb(hdmi, offset, temp); +} + +static int starfive_hdmi_enable_clk_deassert_rst(struct device *dev, struct starfive_hdmi *hdmi) +{ + int ret; + + ret = clk_bulk_prepare_enable(hdmi->nclks, hdmi->clk_hdmi); + if (ret) { + dev_err(dev, "failed to enable clocks\n"); + return ret; + } + + ret = reset_control_deassert(hdmi->tx_rst); + if (ret < 0) { + dev_err(dev, "failed to deassert tx_rst\n"); + return ret; + } + return 0; +} + +static void starfive_hdmi_disable_clk_assert_rst(struct device *dev, struct starfive_hdmi *hdmi) +{ + int ret; + + ret = reset_control_assert(hdmi->tx_rst); + if (ret < 0) + dev_err(dev, "failed to assert tx_rst\n"); + + clk_bulk_disable_unprepare(hdmi->nclks, hdmi->clk_hdmi); +} + +#ifdef CONFIG_PM_SLEEP +static int hdmi_system_pm_suspend(struct device *dev) +{ + return pm_runtime_force_suspend(dev); +} + +static int hdmi_system_pm_resume(struct device *dev) +{ + return pm_runtime_force_resume(dev); +} +#endif + +#ifdef CONFIG_PM +static int hdmi_runtime_suspend(struct device *dev) +{ + struct starfive_hdmi *hdmi = dev_get_drvdata(dev); + + starfive_hdmi_disable_clk_assert_rst(dev, hdmi); + + return 0; +} + +static int hdmi_runtime_resume(struct device *dev) +{ + struct starfive_hdmi *hdmi = dev_get_drvdata(dev); + + return starfive_hdmi_enable_clk_deassert_rst(dev, hdmi); +} +#endif + +static void starfive_hdmi_tx_phy_power_down(struct starfive_hdmi *hdmi) +{ + hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_OFF); +} + +static void starfive_hdmi_tx_phy_power_on(struct starfive_hdmi *hdmi) +{ + hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_ON); +} + +static void starfive_hdmi_config_pll(struct starfive_hdmi *hdmi) +{ + u32 val; + u8 reg_1ad_value = hdmi->post_cfg->post_div_en ? + hdmi->post_cfg->postdiv : 0x00; + u8 reg_1aa_value = hdmi->post_cfg->post_div_en ? + 0x0e : 0x02; + + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_CONTROL, STARFIVE_PRE_PLL_POWER_DOWN); + hdmi_writeb(hdmi, STARFIVE_POST_PLL_DIV_1, + STARFIVE_POST_PLL_POST_DIV_ENABLE | + STARFIVE_POST_PLL_REFCLK_SEL_TMDS | + STARFIVE_POST_PLL_POWER_DOWN); + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_1, STARFIVE_PRE_PLL_PRE_DIV(hdmi->pre_cfg.prediv)); + + val = STARFIVE_SPREAD_SPECTRUM_MOD_DISABLE | STARFIVE_SPREAD_SPECTRUM_MOD_DOWN; + if (!hdmi->pre_cfg.fracdiv) + val |= STARFIVE_PRE_PLL_FRAC_DIV_DISABLE; + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_2, + STARFIVE_PRE_PLL_FB_DIV_11_8(hdmi->pre_cfg.fbdiv) | val); + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_3, + STARFIVE_PRE_PLL_FB_DIV_7_0(hdmi->pre_cfg.fbdiv)); + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_4, + STARFIVE_PRE_PLL_TMDSCLK_DIV_C(hdmi->pre_cfg.tmds_div_c) | + STARFIVE_PRE_PLL_TMDSCLK_DIV_A(hdmi->pre_cfg.tmds_div_a) | + STARFIVE_PRE_PLL_TMDSCLK_DIV_B(hdmi->pre_cfg.tmds_div_b)); + + if (hdmi->pre_cfg.fracdiv) { + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_FRAC_DIV_L, + STARFIVE_PRE_PLL_FRAC_DIV_7_0(hdmi->pre_cfg.fracdiv)); + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_FRAC_DIV_M, + STARFIVE_PRE_PLL_FRAC_DIV_15_8(hdmi->pre_cfg.fracdiv)); + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_FRAC_DIV_H, + STARFIVE_PRE_PLL_FRAC_DIV_23_16(hdmi->pre_cfg.fracdiv)); + } + + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_5, + STARFIVE_PRE_PLL_PCLK_DIV_A(hdmi->pre_cfg.pclk_div_a) | + STARFIVE_PRE_PLL_PCLK_DIV_B(hdmi->pre_cfg.pclk_div_b)); + hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_6, + STARFIVE_PRE_PLL_PCLK_DIV_C(hdmi->pre_cfg.pclk_div_c) | + STARFIVE_PRE_PLL_PCLK_DIV_D(hdmi->pre_cfg.pclk_div_d)); + + /*pre-pll power down*/ + hdmi_modb(hdmi, STARFIVE_PRE_PLL_CONTROL, STARFIVE_PRE_PLL_POWER_DOWN, 0); + + hdmi_modb(hdmi, STARFIVE_POST_PLL_DIV_2, STARFIVE_POST_PLL_Pre_DIV_MASK, + STARFIVE_POST_PLL_PRE_DIV(hdmi->post_cfg->prediv)); + hdmi_writeb(hdmi, STARFIVE_POST_PLL_DIV_3, hdmi->post_cfg->fbdiv & 0xff); + hdmi_writeb(hdmi, STARFIVE_POST_PLL_DIV_4, reg_1ad_value); + hdmi_writeb(hdmi, STARFIVE_POST_PLL_DIV_1, reg_1aa_value); +} + +static void starfive_hdmi_tmds_driver_on(struct starfive_hdmi *hdmi) +{ + hdmi_modb(hdmi, STARFIVE_TMDS_CONTROL, + STARFIVE_TMDS_DRIVER_ENABLE, STARFIVE_TMDS_DRIVER_ENABLE); +} + +static void starfive_hdmi_sync_tmds(struct starfive_hdmi *hdmi) +{ + /*first send 0 to this bit, then send 1 and keep 1 into this bit*/ + hdmi_writeb(hdmi, HDMI_SYNC, 0x0); + hdmi_writeb(hdmi, HDMI_SYNC, 0x1); +} + +static void starfive_hdmi_i2c_init(struct starfive_hdmi *hdmi) +{ + int ddc_bus_freq; + + ddc_bus_freq = (clk_get_rate(hdmi->clk_hdmi[CLK_SYS].clk) >> 2) / HDMI_SCL_RATE; + + hdmi_writeb(hdmi, DDC_BUS_FREQ_L, ddc_bus_freq & 0xFF); + hdmi_writeb(hdmi, DDC_BUS_FREQ_H, (ddc_bus_freq >> 8) & 0xFF); + + /* Clear the EDID interrupt flag and mute the interrupt */ + hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0); + hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY); +} + +static void starfive_hdmi_phy_get_pre_pll_cfg(struct starfive_hdmi *hdmi) +{ + if (hdmi->tmds_rate > 30000000) { + hdmi->pre_cfg.pixclock = hdmi->tmds_rate; + hdmi->pre_cfg.tmdsclock = hdmi->tmds_rate; + hdmi->pre_cfg.prediv = 1; + hdmi->pre_cfg.fbdiv = hdmi->tmds_rate / 3000000; + hdmi->pre_cfg.tmds_div_a = 0; + hdmi->pre_cfg.tmds_div_b = 1; + hdmi->pre_cfg.tmds_div_c = 1; + hdmi->pre_cfg.pclk_div_a = 1; + hdmi->pre_cfg.pclk_div_b = 0; + hdmi->pre_cfg.pclk_div_c = 2; + hdmi->pre_cfg.pclk_div_d = 2; + hdmi->pre_cfg.vco_div_5_en = hdmi->tmds_rate % 3000000 ? 1 : 0; + + if (hdmi->pre_cfg.vco_div_5_en) { + hdmi->pre_cfg.fracdiv = (hdmi->tmds_rate % 3000000) * + 0xffffff / 1000000; + } + } else { + hdmi->pre_cfg.pixclock = hdmi->tmds_rate; + hdmi->pre_cfg.tmdsclock = hdmi->tmds_rate; + hdmi->pre_cfg.prediv = 1; + hdmi->pre_cfg.fbdiv = hdmi->tmds_rate / 1000000; + hdmi->pre_cfg.tmds_div_a = 2; + hdmi->pre_cfg.tmds_div_b = 1; + hdmi->pre_cfg.tmds_div_c = 1; + hdmi->pre_cfg.pclk_div_a = 3; + hdmi->pre_cfg.pclk_div_b = 0; + hdmi->pre_cfg.pclk_div_c = 3; + hdmi->pre_cfg.pclk_div_d = 4; + hdmi->pre_cfg.vco_div_5_en = hdmi->tmds_rate % 1000000 ? 1 : 0; + + if (hdmi->pre_cfg.vco_div_5_en) { + hdmi->pre_cfg.fracdiv = (hdmi->tmds_rate % 1000000) * + 0xffffff / 1000000; + } + } +} + +static int starfive_hdmi_phy_clk_set_rate(struct starfive_hdmi *hdmi) +{ + hdmi->post_cfg = post_pll_cfg_table; + + starfive_hdmi_phy_get_pre_pll_cfg(hdmi); + + for (; hdmi->post_cfg->tmdsclock != 0; hdmi->post_cfg++) + if (hdmi->tmds_rate <= hdmi->post_cfg->tmdsclock) + break; + + starfive_hdmi_config_pll(hdmi); + + return 0; +} + +static int starfive_hdmi_config_video_timing(struct starfive_hdmi *hdmi, + struct drm_display_mode *mode) +{ + int value; + /* Set detail external video timing */ + value = mode->htotal; + hdmi_writew(hdmi, HDMI_VIDEO_EXT_HTOTAL_L, value); + + value = mode->htotal - mode->hdisplay; + hdmi_writew(hdmi, HDMI_VIDEO_EXT_HBLANK_L, value); + + value = mode->htotal - mode->hsync_start; + hdmi_writew(hdmi, HDMI_VIDEO_EXT_HDELAY_L, value); + + value = mode->hsync_end - mode->hsync_start; + hdmi_writew(hdmi, HDMI_VIDEO_EXT_HDURATION_L, value); + + value = mode->vtotal; + hdmi_writew(hdmi, HDMI_VIDEO_EXT_VTOTAL_L, value); + + value = mode->vtotal - mode->vdisplay; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VBLANK, value & 0xFF); + + value = mode->vtotal - mode->vsync_start; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDELAY, value & 0xFF); + + value = mode->vsync_end - mode->vsync_start; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDURATION, value & 0xFF); + + /* Set detail external video timing polarity and interlace mode */ + value = v_EXTERANL_VIDEO(1); + value |= mode->flags & DRM_MODE_FLAG_PHSYNC ? + v_HSYNC_POLARITY(1) : v_HSYNC_POLARITY(0); + value |= mode->flags & DRM_MODE_FLAG_PVSYNC ? + v_VSYNC_POLARITY(1) : v_VSYNC_POLARITY(0); + value |= mode->flags & DRM_MODE_FLAG_INTERLACE ? + v_INETLACE(1) : v_INETLACE(0); + + hdmi_writeb(hdmi, HDMI_VIDEO_TIMING_CTL, value); + return 0; +} + +static int starfive_hdmi_setup(struct starfive_hdmi *hdmi, + struct drm_display_mode *mode) +{ + int ret; + u32 val; + + hdmi_modb(hdmi, STARFIVE_BIAS_CONTROL, STARFIVE_BIAS_ENABLE, STARFIVE_BIAS_ENABLE); + hdmi_writeb(hdmi, STARFIVE_RX_CONTROL, STARFIVE_RX_ENABLE); + + hdmi->tmds_rate = mode->clock * 1000; + starfive_hdmi_phy_clk_set_rate(hdmi); + + ret = readx_poll_timeout(readl_relaxed, + hdmi->regs + (STARFIVE_PRE_PLL_LOCK_STATUS) * 0x04, + val, val & 0x1, 1000, 100000); + if (ret < 0) { + dev_err(hdmi->dev, "failed to wait pre-pll lock\n"); + return ret; + } + + ret = readx_poll_timeout(readl_relaxed, + hdmi->regs + (STARFIVE_POST_PLL_LOCK_STATUS) * 0x04, + val, val & 0x1, 1000, 100000); + if (ret < 0) { + dev_err(hdmi->dev, "failed to wait post-pll lock\n"); + return ret; + } + + /*turn on LDO*/ + hdmi_writeb(hdmi, STARFIVE_LDO_CONTROL, STARFIVE_LDO_ENABLE); + /*turn on serializer*/ + hdmi_writeb(hdmi, STARFIVE_SERIALIER_CONTROL, STARFIVE_SERIALIER_ENABLE); + + starfive_hdmi_tx_phy_power_down(hdmi); + starfive_hdmi_config_video_timing(hdmi, mode); + starfive_hdmi_tx_phy_power_on(hdmi); + + starfive_hdmi_tmds_driver_on(hdmi); + starfive_hdmi_sync_tmds(hdmi); + + return 0; +} + +static void starfive_hdmi_encoder_enable(struct drm_encoder *encoder) +{ + struct starfive_hdmi_encoder *hdmi_encoder = encoder_to_hdmi(encoder); + struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode; + int ret, idx; + struct drm_device *drm = hdmi_encoder->hdmi->connector.dev; + + if (drm && !drm_dev_enter(drm, &idx)) + return; + + ret = pm_runtime_get_sync(hdmi_encoder->hdmi->dev); + if (ret < 0) + return; + starfive_hdmi_setup(hdmi_encoder->hdmi, mode); + + if (drm) + drm_dev_exit(idx); +} + +static void starfive_hdmi_encoder_disable(struct drm_encoder *encoder) +{ + struct starfive_hdmi_encoder *hdmi_encoder = encoder_to_hdmi(encoder); + + pm_runtime_put(hdmi_encoder->hdmi->dev); +} + +static int +starfive_hdmi_encoder_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + bool valid = false; + struct drm_display_mode *mode = &crtc_state->adjusted_mode; + struct vs_crtc_state *vs_crtc_state = to_vs_crtc_state(crtc_state); + + vs_crtc_state->encoder_type = encoder->encoder_type; + vs_crtc_state->output_fmt = MEDIA_BUS_FMT_RGB888_1X24; + + int pclk = mode->clock * 1000; + + if (pclk <= PIXCLOCK_4K_30FPS) + valid = true; + + return (valid) ? 0 : -EINVAL; +} + +static const struct drm_encoder_helper_funcs starfive_hdmi_encoder_helper_funcs = { + .enable = starfive_hdmi_encoder_enable, + .disable = starfive_hdmi_encoder_disable, + .atomic_check = starfive_hdmi_encoder_atomic_check, +}; + +static enum drm_connector_status +starfive_hdmi_connector_detect(struct drm_connector *connector, bool force) +{ + struct starfive_hdmi *hdmi = connector_to_hdmi(connector); + struct drm_device *drm = hdmi->connector.dev; + int ret; + int idx; + + if (drm && !drm_dev_enter(drm, &idx)) + return connector_status_disconnected; + + ret = pm_runtime_get_sync(hdmi->dev); + if (ret < 0) + return ret; + + ret = (hdmi_readb(hdmi, HDMI_STATUS) & m_HOTPLUG) ? + connector_status_connected : connector_status_disconnected; + pm_runtime_put(hdmi->dev); + + if (drm) + drm_dev_exit(idx); + + return ret; +} + +static int starfive_hdmi_connector_get_modes(struct drm_connector *connector) +{ + struct starfive_hdmi *hdmi = connector_to_hdmi(connector); + int ret = 0; + + if (!hdmi->ddc) + return 0; + ret = pm_runtime_get_sync(hdmi->dev); + if (ret < 0) + return ret; + + ret = drm_connector_helper_get_modes_from_ddc(connector); + pm_runtime_put(hdmi->dev); + + return ret; +} + +static enum drm_mode_status +starfive_hdmi_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + int pclk = mode->clock * 1000; + bool valid = false; + + if (pclk <= PIXCLOCK_4K_30FPS) + valid = true; + + return (valid) ? MODE_OK : MODE_BAD; +} + +static int +starfive_hdmi_probe_single_connector_modes(struct drm_connector *connector, + u32 maxX, u32 maxY) +{ + return drm_helper_probe_single_connector_modes(connector, 3840, 2160); +} + +static const struct drm_connector_funcs starfive_hdmi_connector_funcs = { + .fill_modes = starfive_hdmi_probe_single_connector_modes, + .detect = starfive_hdmi_connector_detect, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static struct drm_connector_helper_funcs starfive_hdmi_connector_helper_funcs = { + .get_modes = starfive_hdmi_connector_get_modes, + .mode_valid = starfive_hdmi_connector_mode_valid, +}; + +static int starfive_hdmi_register(struct drm_device *drm, + struct starfive_hdmi_encoder *hdmi_encoder) +{ + struct drm_encoder *encoder = &hdmi_encoder->encoder; + struct device *dev = hdmi_encoder->hdmi->dev; + + encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); + + /* + * If we failed to find the CRTC(s) which this encoder is + * supposed to be connected to, it's because the CRTC has + * not been registered yet. Defer probing, and hope that + * the required CRTC is added later. + */ + if (encoder->possible_crtcs == 0) + return -EPROBE_DEFER; + + drm_encoder_helper_add(encoder, &starfive_hdmi_encoder_helper_funcs); + + hdmi_encoder->hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD; + + drm_connector_helper_add(&hdmi_encoder->hdmi->connector, + &starfive_hdmi_connector_helper_funcs); + drmm_connector_init(drm, &hdmi_encoder->hdmi->connector, + &starfive_hdmi_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA, + hdmi_encoder->hdmi->ddc); + + drm_connector_attach_encoder(&hdmi_encoder->hdmi->connector, encoder); + + return 0; +} + +static irqreturn_t starfive_hdmi_i2c_irq(struct starfive_hdmi *hdmi) +{ + struct starfive_hdmi_i2c *i2c = hdmi->i2c; + u8 stat; + + stat = hdmi_readb(hdmi, HDMI_INTERRUPT_STATUS1); + if (!(stat & m_INT_EDID_READY)) + return IRQ_NONE; + + /* Clear HDMI EDID interrupt flag */ + hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY); + + complete(&i2c->cmp); + + return IRQ_HANDLED; +} + +static irqreturn_t starfive_hdmi_hardirq(int irq, void *dev_id) +{ + struct starfive_hdmi *hdmi = dev_id; + irqreturn_t ret = IRQ_NONE; + u8 interrupt; + + if (hdmi->i2c) + ret = starfive_hdmi_i2c_irq(hdmi); + + interrupt = hdmi_readb(hdmi, HDMI_STATUS); + if (interrupt & m_INT_HOTPLUG) { + hdmi_modb(hdmi, HDMI_STATUS, m_INT_HOTPLUG, m_INT_HOTPLUG); + ret = IRQ_WAKE_THREAD; + } + + return ret; +} + +static irqreturn_t starfive_hdmi_irq(int irq, void *dev_id) +{ + struct starfive_hdmi *hdmi = dev_id; + + drm_connector_helper_hpd_irq_event(&hdmi->connector); + + return IRQ_HANDLED; +} + +static int starfive_hdmi_i2c_read(struct starfive_hdmi *hdmi, struct i2c_msg *msgs) +{ + int length = msgs->len; + u8 *buf = msgs->buf; + int ret; + + ret = wait_for_completion_timeout(&hdmi->i2c->cmp, HZ / 10); + if (!ret) + return -EAGAIN; + + while (length--) + *buf++ = hdmi_readb(hdmi, HDMI_EDID_FIFO_ADDR); + + return 0; +} + +static int starfive_hdmi_i2c_write(struct starfive_hdmi *hdmi, struct i2c_msg *msgs) +{ + /* + * The DDC module only support read EDID message, so + * we assume that each word write to this i2c adapter + * should be the offset of EDID word address. + */ + if (msgs->len != 1 || + (msgs->addr != DDC_ADDR && msgs->addr != DDC_SEGMENT_ADDR)) + return -EINVAL; + + reinit_completion(&hdmi->i2c->cmp); + + if (msgs->addr == DDC_SEGMENT_ADDR) + hdmi->i2c->segment_addr = msgs->buf[0]; + if (msgs->addr == DDC_ADDR) + hdmi->i2c->ddc_addr = msgs->buf[0]; + + /* Set edid fifo first addr */ + hdmi_writeb(hdmi, HDMI_EDID_FIFO_OFFSET, 0x00); + + /* Set edid word address 0x00/0x80 */ + hdmi_writeb(hdmi, HDMI_EDID_WORD_ADDR, hdmi->i2c->ddc_addr); + + /* Set edid segment pointer */ + hdmi_writeb(hdmi, HDMI_EDID_SEGMENT_POINTER, hdmi->i2c->segment_addr); + + return 0; +} + +static int starfive_hdmi_i2c_xfer(struct i2c_adapter *adap, + struct i2c_msg *msgs, int num) +{ + struct starfive_hdmi *hdmi = i2c_get_adapdata(adap); + struct starfive_hdmi_i2c *i2c = hdmi->i2c; + int i, ret = 0; + + mutex_lock(&i2c->lock); + + /* Clear the EDID interrupt flag and unmute the interrupt */ + hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, m_INT_EDID_READY); + hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY); + + for (i = 0; i < num; i++) { + DRM_DEV_DEBUG(hdmi->dev, + "xfer: num: %d/%d, len: %d, flags: %#x\n", + i + 1, num, msgs[i].len, msgs[i].flags); + + if (msgs[i].flags & I2C_M_RD) + ret = starfive_hdmi_i2c_read(hdmi, &msgs[i]); + else + ret = starfive_hdmi_i2c_write(hdmi, &msgs[i]); + + if (ret < 0) + break; + } + + if (!ret) + ret = num; + + /* Mute HDMI EDID interrupt */ + hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0); + + mutex_unlock(&i2c->lock); + + return ret; +} + +static u32 starfive_hdmi_i2c_func(struct i2c_adapter *adapter) +{ + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; +} + +static const struct i2c_algorithm starfive_hdmi_algorithm = { + .master_xfer = starfive_hdmi_i2c_xfer, + .functionality = starfive_hdmi_i2c_func, +}; + +static struct i2c_adapter *starfive_hdmi_i2c_adapter(struct starfive_hdmi *hdmi) +{ + struct i2c_adapter *adap; + struct starfive_hdmi_i2c *i2c; + int ret; + + i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL); + if (!i2c) + return ERR_PTR(-ENOMEM); + + mutex_init(&i2c->lock); + init_completion(&i2c->cmp); + + adap = &i2c->adap; + adap->class = I2C_CLASS_DDC; + adap->owner = THIS_MODULE; + adap->dev.parent = hdmi->dev; + adap->algo = &starfive_hdmi_algorithm; + strscpy(adap->name, "Starfive HDMI", sizeof(adap->name)); + i2c_set_adapdata(adap, hdmi); + + ret = devm_i2c_add_adapter(hdmi->dev, adap); + if (ret) { + dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name); + devm_kfree(hdmi->dev, i2c); + return ERR_PTR(ret); + } + + hdmi->i2c = i2c; + + DRM_DEV_INFO(hdmi->dev, "registered %s I2C bus driver success\n", adap->name); + + return adap; +} + +static int starfive_hdmi_get_clk_rst(struct device *dev, struct starfive_hdmi *hdmi) +{ + int ret; + + hdmi->nclks = ARRAY_SIZE(hdmi->clk_hdmi); + for (int i = 0; i < hdmi->nclks; ++i) + hdmi->clk_hdmi[i].id = hdmi_clocks[i]; + + ret = devm_clk_bulk_get(dev, hdmi->nclks, hdmi->clk_hdmi); + if (ret) { + dev_err(dev, "Failed to get clk controls\n"); + return ret; + } + + hdmi->tx_rst = devm_reset_control_get_by_index(dev, 0); + if (IS_ERR(hdmi->tx_rst)) { + dev_err(dev, "failed to get tx_rst reset\n"); + return PTR_ERR(hdmi->tx_rst); + } + + return 0; +} + +static int starfive_hdmi_bind(struct device *dev, struct device *master, + void *data) +{ + struct drm_device *drm = dev_get_drvdata(master); + struct starfive_hdmi_encoder *hdmi_encoder; + int ret; + + hdmi_encoder = drmm_simple_encoder_alloc(drm, struct starfive_hdmi_encoder, + encoder, DRM_MODE_ENCODER_TMDS); + if (IS_ERR(hdmi_encoder)) + return PTR_ERR(hdmi_encoder); + + hdmi_encoder->hdmi = dev_get_drvdata(dev); + hdmi_encoder->hdmi->drm_dev = drm; + + ret = pm_runtime_resume_and_get(dev); + if (ret) + return ret; + + starfive_hdmi_i2c_init(hdmi_encoder->hdmi); + + ret = starfive_hdmi_register(drm, hdmi_encoder); + if (ret) + goto err_put_adapter; + + /* Unmute hotplug interrupt */ + hdmi_modb(hdmi_encoder->hdmi, HDMI_STATUS, m_MASK_INT_HOTPLUG, v_MASK_INT_HOTPLUG(1)); + + ret = devm_request_threaded_irq(dev, hdmi_encoder->hdmi->irq, starfive_hdmi_hardirq, + starfive_hdmi_irq, IRQF_SHARED, + dev_name(dev), hdmi_encoder->hdmi); + if (ret < 0) + goto err_put_adapter; + + pm_runtime_put_sync(dev); + + return 0; + +err_put_adapter: + i2c_put_adapter(hdmi_encoder->hdmi->ddc); + return ret; +} + +static const struct component_ops starfive_hdmi_ops = { + .bind = starfive_hdmi_bind, +}; + +static int starfive_hdmi_probe(struct platform_device *pdev) +{ + int ret; + struct starfive_hdmi *hdmi; + struct resource *iores; + + hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL); + if (!hdmi) + return -ENOMEM; + + dev_set_drvdata(&pdev->dev, hdmi); + hdmi->dev = &pdev->dev; + + iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); + hdmi->regs = devm_ioremap_resource(hdmi->dev, iores); + if (IS_ERR(hdmi->regs)) + return PTR_ERR(hdmi->regs); + + ret = starfive_hdmi_get_clk_rst(hdmi->dev, hdmi); + if (ret < 0) + return ret; + + ret = devm_pm_runtime_enable(hdmi->dev); + if (ret) + return ret; + + hdmi->irq = platform_get_irq(pdev, 0); + if (hdmi->irq < 0) { + ret = hdmi->irq; + return ret; + } + + hdmi->ddc = starfive_hdmi_i2c_adapter(hdmi); + if (IS_ERR(hdmi->ddc)) { + ret = PTR_ERR(hdmi->ddc); + hdmi->ddc = NULL; + return ret; + } + + return component_add(&pdev->dev, &starfive_hdmi_ops); +} + +static int starfive_hdmi_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &starfive_hdmi_ops); + + return 0; +} + +static const struct dev_pm_ops hdmi_pm_ops = { + SET_RUNTIME_PM_OPS(hdmi_runtime_suspend, hdmi_runtime_resume, NULL) + SET_LATE_SYSTEM_SLEEP_PM_OPS(hdmi_system_pm_suspend, hdmi_system_pm_resume) +}; + +static const struct of_device_id starfive_hdmi_dt_ids[] = { + { .compatible = "starfive,jh7110-inno-hdmi",}, + {}, +}; +MODULE_DEVICE_TABLE(of, starfive_hdmi_dt_ids); + +struct platform_driver starfive_hdmi_driver = { + .probe = starfive_hdmi_probe, + .remove = starfive_hdmi_remove, + .driver = { + .name = "starfive-hdmi", + .of_match_table = starfive_hdmi_dt_ids, + .pm = &hdmi_pm_ops, + }, +}; + +MODULE_AUTHOR("StarFive Corporation"); +MODULE_DESCRIPTION("Starfive HDMI Driver"); diff --git a/drivers/gpu/drm/verisilicon/starfive_hdmi.h b/drivers/gpu/drm/verisilicon/starfive_hdmi.h new file mode 100644 index 0000000..ca5f40b --- /dev/null +++ b/drivers/gpu/drm/verisilicon/starfive_hdmi.h @@ -0,0 +1,304 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2023 StarFive Technology Co., Ltd. + */ + +#ifndef __STARFIVE_HDMI_H__ +#define __STARFIVE_HDMI_H__ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define DDC_SEGMENT_ADDR 0x30 + +#define HDMI_SCL_RATE (100 * 1000) +#define DDC_BUS_FREQ_L 0x4b +#define DDC_BUS_FREQ_H 0x4c + +#define HDMI_SYS_CTRL 0x00 +#define m_RST_ANALOG BIT(6) +#define v_RST_ANALOG 0 +#define v_NOT_RST_ANALOG BIT(6) +#define m_RST_DIGITAL BIT(5) +#define v_RST_DIGITAL 0 +#define v_NOT_RST_DIGITAL BIT(5) +#define m_REG_CLK_INV BIT(4) +#define v_REG_CLK_NOT_INV 0 +#define v_REG_CLK_INV BIT(4) +#define m_VCLK_INV BIT(3) +#define v_VCLK_NOT_INV 0 +#define v_VCLK_INV BIT(3) +#define m_REG_CLK_SOURCE BIT(2) +#define v_REG_CLK_SOURCE_TMDS 0 +#define v_REG_CLK_SOURCE_SYS BIT(2) +#define m_POWER BIT(1) +#define v_PWR_ON 0 +#define v_PWR_OFF BIT(1) +#define m_INT_POL BIT(0) +#define v_INT_POL_HIGH 1 +#define v_INT_POL_LOW 0 + +#define HDMI_AV_MUTE 0x05 +#define m_AVMUTE_CLEAR BIT(7) +#define m_AVMUTE_ENABLE BIT(6) +#define m_AUDIO_MUTE BIT(1) +#define m_VIDEO_BLACK BIT(0) +#define v_AVMUTE_CLEAR(n) ((n) << 7) +#define v_AVMUTE_ENABLE(n) ((n) << 6) +#define v_AUDIO_MUTE(n) ((n) << 1) +#define v_VIDEO_MUTE(n) ((n) << 0) + +#define HDMI_VIDEO_TIMING_CTL 0x08 +#define v_VSYNC_POLARITY(n) ((n) << 3) +#define v_HSYNC_POLARITY(n) ((n) << 2) +#define v_INETLACE(n) ((n) << 1) +#define v_EXTERANL_VIDEO(n) ((n) << 0) + +#define HDMI_VIDEO_EXT_HTOTAL_L 0x09 +#define HDMI_VIDEO_EXT_HTOTAL_H 0x0a +#define HDMI_VIDEO_EXT_HBLANK_L 0x0b +#define HDMI_VIDEO_EXT_HBLANK_H 0x0c +#define HDMI_VIDEO_EXT_HDELAY_L 0x0d +#define HDMI_VIDEO_EXT_HDELAY_H 0x0e +#define HDMI_VIDEO_EXT_HDURATION_L 0x0f +#define HDMI_VIDEO_EXT_HDURATION_H 0x10 +#define HDMI_VIDEO_EXT_VTOTAL_L 0x11 +#define HDMI_VIDEO_EXT_VTOTAL_H 0x12 +#define HDMI_VIDEO_EXT_VBLANK 0x13 +#define HDMI_VIDEO_EXT_VDELAY 0x14 +#define HDMI_VIDEO_EXT_VDURATION 0x15 + +#define HDMI_EDID_SEGMENT_POINTER 0x4d +#define HDMI_EDID_WORD_ADDR 0x4e +#define HDMI_EDID_FIFO_OFFSET 0x4f +#define HDMI_EDID_FIFO_ADDR 0x50 + +#define HDMI_INTERRUPT_MASK1 0xc0 +#define HDMI_INTERRUPT_STATUS1 0xc1 +#define m_INT_ACTIVE_VSYNC BIT(5) +#define m_INT_EDID_READY BIT(2) + +#define HDMI_STATUS 0xc8 +#define m_HOTPLUG BIT(7) +#define m_MASK_INT_HOTPLUG BIT(5) +#define m_INT_HOTPLUG BIT(1) +#define v_MASK_INT_HOTPLUG(n) (((n) & 0x1) << 5) + +#define HDMI_SYNC 0xce + +#define UPDATE(x, h, l) FIELD_PREP(GENMASK(h, l), x) + +/* REG: 0x1a0 */ +#define STARFIVE_PRE_PLL_CONTROL 0x1a0 +#define STARFIVE_PCLK_VCO_DIV_5_MASK BIT(1) +#define STARFIVE_PCLK_VCO_DIV_5(x) UPDATE(x, 1, 1) +#define STARFIVE_PRE_PLL_POWER_DOWN BIT(0) + +/* REG: 0x1a1 */ +#define STARFIVE_PRE_PLL_DIV_1 0x1a1 +#define STARFIVE_PRE_PLL_PRE_DIV_MASK GENMASK(5, 0) +#define STARFIVE_PRE_PLL_PRE_DIV(x) UPDATE(x, 5, 0) + +/* REG: 0x1a2 */ +#define STARFIVE_PRE_PLL_DIV_2 0x1a2 +#define STARFIVE_SPREAD_SPECTRUM_MOD_DOWN BIT(7) +#define STARFIVE_SPREAD_SPECTRUM_MOD_DISABLE BIT(6) +#define STARFIVE_PRE_PLL_FRAC_DIV_DISABLE UPDATE(3, 5, 4) +#define STARFIVE_PRE_PLL_FB_DIV_11_8_MASK GENMASK(3, 0) +#define STARFIVE_PRE_PLL_FB_DIV_11_8(x) UPDATE((x) >> 8, 3, 0) + +/* REG: 0x1a3 */ +#define STARFIVE_PRE_PLL_DIV_3 0x1a3 +#define STARFIVE_PRE_PLL_FB_DIV_7_0(x) UPDATE(x, 7, 0) + +/* REG: 0x1a4*/ +#define STARFIVE_PRE_PLL_DIV_4 0x1a4 +#define STARFIVE_PRE_PLL_TMDSCLK_DIV_C_MASK GENMASK(1, 0) +#define STARFIVE_PRE_PLL_TMDSCLK_DIV_C(x) UPDATE(x, 1, 0) +#define STARFIVE_PRE_PLL_TMDSCLK_DIV_B_MASK GENMASK(3, 2) +#define STARFIVE_PRE_PLL_TMDSCLK_DIV_B(x) UPDATE(x, 3, 2) +#define STARFIVE_PRE_PLL_TMDSCLK_DIV_A_MASK GENMASK(5, 4) +#define STARFIVE_PRE_PLL_TMDSCLK_DIV_A(x) UPDATE(x, 5, 4) + +/* REG: 0x1a5 */ +#define STARFIVE_PRE_PLL_DIV_5 0x1a5 +#define STARFIVE_PRE_PLL_PCLK_DIV_B_SHIFT 5 +#define STARFIVE_PRE_PLL_PCLK_DIV_B_MASK GENMASK(6, 5) +#define STARFIVE_PRE_PLL_PCLK_DIV_B(x) UPDATE(x, 6, 5) +#define STARFIVE_PRE_PLL_PCLK_DIV_A_MASK GENMASK(4, 0) +#define STARFIVE_PRE_PLL_PCLK_DIV_A(x) UPDATE(x, 4, 0) + +/* REG: 0x1a6 */ +#define STARFIVE_PRE_PLL_DIV_6 0x1a6 +#define STARFIVE_PRE_PLL_PCLK_DIV_C_SHIFT 5 +#define STARFIVE_PRE_PLL_PCLK_DIV_C_MASK GENMASK(6, 5) +#define STARFIVE_PRE_PLL_PCLK_DIV_C(x) UPDATE(x, 6, 5) +#define STARFIVE_PRE_PLL_PCLK_DIV_D_MASK GENMASK(4, 0) +#define STARFIVE_PRE_PLL_PCLK_DIV_D(x) UPDATE(x, 4, 0) + +/* REG: 0x1a9 */ +#define STARFIVE_PRE_PLL_LOCK_STATUS 0x1a9 + +/* REG: 0x1aa */ +#define STARFIVE_POST_PLL_DIV_1 0x1aa +#define STARFIVE_POST_PLL_POST_DIV_ENABLE GENMASK(3, 2) +#define STARFIVE_POST_PLL_REFCLK_SEL_TMDS BIT(1) +#define STARFIVE_POST_PLL_POWER_DOWN BIT(0) +#define STARFIVE_POST_PLL_FB_DIV_8(x) UPDATE(((x) >> 8) << 4, 4, 4) + +/* REG:0x1ab */ +#define STARFIVE_POST_PLL_DIV_2 0x1ab +#define STARFIVE_POST_PLL_Pre_DIV_MASK GENMASK(5, 0) +#define STARFIVE_POST_PLL_PRE_DIV(x) UPDATE(x, 5, 0) + +/* REG: 0x1ac */ +#define STARFIVE_POST_PLL_DIV_3 0x1ac +#define STARFIVE_POST_PLL_FB_DIV_7_0(x) UPDATE(x, 7, 0) + +/* REG: 0x1ad */ +#define STARFIVE_POST_PLL_DIV_4 0x1ad +#define STARFIVE_POST_PLL_POST_DIV_MASK GENMASK(2, 0) +#define STARFIVE_POST_PLL_POST_DIV_2 0x0 +#define STARFIVE_POST_PLL_POST_DIV_4 0x1 +#define STARFIVE_POST_PLL_POST_DIV_8 0x3 + +/* REG: 0x1af */ +#define STARFIVE_POST_PLL_LOCK_STATUS 0x1af + +/* REG: 0x1b0 */ +#define STARFIVE_BIAS_CONTROL 0x1b0 +#define STARFIVE_BIAS_ENABLE BIT(2) + +/* REG: 0x1b2 */ +#define STARFIVE_TMDS_CONTROL 0x1b2 +#define STARFIVE_TMDS_CLK_DRIVER_EN BIT(3) +#define STARFIVE_TMDS_D2_DRIVER_EN BIT(2) +#define STARFIVE_TMDS_D1_DRIVER_EN BIT(1) +#define STARFIVE_TMDS_D0_DRIVER_EN BIT(0) +#define STARFIVE_TMDS_DRIVER_ENABLE (STARFIVE_TMDS_CLK_DRIVER_EN | \ + STARFIVE_TMDS_D2_DRIVER_EN | \ + STARFIVE_TMDS_D1_DRIVER_EN | \ + STARFIVE_TMDS_D0_DRIVER_EN) + +/* REG: 0x1b4 */ +#define STARFIVE_LDO_CONTROL 0x1b4 +#define STARFIVE_LDO_D2_EN BIT(2) +#define STARFIVE_LDO_D1_EN BIT(1) +#define STARFIVE_LDO_D0_EN BIT(0) +#define STARFIVE_LDO_ENABLE (STARFIVE_LDO_D2_EN | \ + STARFIVE_LDO_D1_EN | \ + STARFIVE_LDO_D0_EN) + +/* REG: 0x1be */ +#define STARFIVE_SERIALIER_CONTROL 0x1be +#define STARFIVE_SERIALIER_D2_EN BIT(6) +#define STARFIVE_SERIALIER_D1_EN BIT(5) +#define STARFIVE_SERIALIER_D0_EN BIT(4) +#define STARFIVE_SERIALIER_EN BIT(0) + +#define STARFIVE_SERIALIER_ENABLE (STARFIVE_SERIALIER_D2_EN | \ + STARFIVE_SERIALIER_D1_EN | \ + STARFIVE_SERIALIER_D0_EN | \ + STARFIVE_SERIALIER_EN) + +/* REG: 0x1cc */ +#define STARFIVE_RX_CONTROL 0x1cc +#define STARFIVE_RX_EN BIT(3) +#define STARFIVE_RX_CHANNEL_2_EN BIT(2) +#define STARFIVE_RX_CHANNEL_1_EN BIT(1) +#define STARFIVE_RX_CHANNEL_0_EN BIT(0) +#define STARFIVE_RX_ENABLE (STARFIVE_RX_EN | \ + STARFIVE_RX_CHANNEL_2_EN | \ + STARFIVE_RX_CHANNEL_1_EN | \ + STARFIVE_RX_CHANNEL_0_EN) + +/* REG: 0x1d1 */ +#define STARFIVE_PRE_PLL_FRAC_DIV_H 0x1d1 +#define STARFIVE_PRE_PLL_FRAC_DIV_23_16(x) UPDATE((x) >> 16, 7, 0) +/* REG: 0x1d2 */ +#define STARFIVE_PRE_PLL_FRAC_DIV_M 0x1d2 +#define STARFIVE_PRE_PLL_FRAC_DIV_15_8(x) UPDATE((x) >> 8, 7, 0) +/* REG: 0x1d3 */ +#define STARFIVE_PRE_PLL_FRAC_DIV_L 0x1d3 +#define STARFIVE_PRE_PLL_FRAC_DIV_7_0(x) UPDATE(x, 7, 0) + +#define PIXCLOCK_4K_30FPS 297000000 + +enum hdmi_clk { + CLK_SYS = 0, + CLK_M, + CLK_B, + CLK_HDMI_NUM +}; + +struct pre_pll_config { + unsigned long pixclock; + unsigned long tmdsclock; + u8 prediv; + u16 fbdiv; + u8 tmds_div_a; + u8 tmds_div_b; + u8 tmds_div_c; + u8 pclk_div_a; + u8 pclk_div_b; + u8 pclk_div_c; + u8 pclk_div_d; + u8 vco_div_5_en; + u32 fracdiv; +}; + +struct post_pll_config { + unsigned long tmdsclock; + u8 prediv; + u16 fbdiv; + u8 postdiv; + u8 post_div_en; + u8 version; +}; + +struct phy_config { + unsigned long tmdsclock; + u8 regs[14]; +}; + +struct starfive_hdmi_encoder { + struct drm_encoder encoder; + struct starfive_hdmi *hdmi; +}; + +struct starfive_hdmi_i2c { + struct i2c_adapter adap; + + u8 ddc_addr; + u8 segment_addr; + /* protects the edid data when use i2c cmd to read edid */ + struct mutex lock; + struct completion cmp; +}; + +struct starfive_hdmi { + struct device *dev; + struct drm_device *drm_dev; + struct drm_connector connector; + void __iomem *regs; + + int irq; + struct clk_bulk_data clk_hdmi[CLK_HDMI_NUM]; + struct reset_control *tx_rst; + int nclks; + + struct i2c_adapter *ddc; + struct starfive_hdmi_i2c *i2c; + + unsigned long tmds_rate; + struct pre_pll_config pre_cfg; + const struct post_pll_config *post_cfg; +}; + +#endif /* __STARFIVE_HDMI_H__ */ diff --git a/drivers/gpu/drm/verisilicon/vs_drv.c b/drivers/gpu/drm/verisilicon/vs_drv.c index 3ef90c8..d7e5199 100644 --- a/drivers/gpu/drm/verisilicon/vs_drv.c +++ b/drivers/gpu/drm/verisilicon/vs_drv.c @@ -214,6 +214,9 @@ static const struct component_master_ops vs_drm_ops = { static struct platform_driver *drm_sub_drivers[] = { &dc_platform_driver, +#ifdef CONFIG_DRM_VERISILICON_STARFIVE_HDMI + &starfive_hdmi_driver, +#endif }; static struct component_match *vs_drm_match_add(struct device *dev) diff --git a/drivers/gpu/drm/verisilicon/vs_drv.h b/drivers/gpu/drm/verisilicon/vs_drv.h index ea21897..9a88cf9 100644 --- a/drivers/gpu/drm/verisilicon/vs_drv.h +++ b/drivers/gpu/drm/verisilicon/vs_drv.h @@ -39,4 +39,8 @@ to_vs_drm_private(const struct drm_device *dev) return container_of(dev, struct vs_drm_device, base); } +#ifdef CONFIG_DRM_VERISILICON_STARFIVE_HDMI +extern struct platform_driver starfive_hdmi_driver; +#endif + #endif /* __VS_DRV_H__ */ -- 2.7.4