Add INNO common api so that it can be used by vendor drivers which implement vendor specific extensions to Innosilicon HDMI. Signed-off-by: keith <keith.zhao@xxxxxxxxxxxxxxxx> --- MAINTAINERS | 2 + drivers/gpu/drm/bridge/Kconfig | 2 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/innosilicon/Kconfig | 6 + drivers/gpu/drm/bridge/innosilicon/Makefile | 2 + .../gpu/drm/bridge/innosilicon/inno-hdmi.c | 587 ++++++++++++++++++ .../gpu/drm/bridge/innosilicon/inno-hdmi.h | 97 +++ include/drm/bridge/inno_hdmi.h | 69 ++ 8 files changed, 766 insertions(+) create mode 100644 drivers/gpu/drm/bridge/innosilicon/Kconfig create mode 100644 drivers/gpu/drm/bridge/innosilicon/Makefile create mode 100644 drivers/gpu/drm/bridge/innosilicon/inno-hdmi.c create mode 100644 drivers/gpu/drm/bridge/innosilicon/inno-hdmi.h create mode 100644 include/drm/bridge/inno_hdmi.h diff --git a/MAINTAINERS b/MAINTAINERS index 8881652bb8b6..cf2d66f88a83 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7155,6 +7155,8 @@ S: Maintained T: git https://gitlab.freedesktop.org/drm/misc/kernel.git F: Documentation/devicetree/bindings/display/bridge/innosilicon,inno-hdmi.yaml F: Documentation/devicetree/bindings/display/starfive/ +F: drivers/gpu/drm/bridge/innosilicon/ +F: include/drm/bridge/inno_hdmi.h DRM DRIVER FOR SYNAPTICS R63353 PANELS M: Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index c621be1a99a8..59fcdb810125 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -415,6 +415,8 @@ source "drivers/gpu/drm/bridge/cadence/Kconfig" source "drivers/gpu/drm/bridge/imx/Kconfig" +source "drivers/gpu/drm/bridge/innosilicon/Kconfig" + source "drivers/gpu/drm/bridge/synopsys/Kconfig" endmenu diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index 7df87b582dca..cca7400566b2 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -40,4 +40,5 @@ obj-$(CONFIG_DRM_ITE_IT66121) += ite-it66121.o obj-y += analogix/ obj-y += cadence/ obj-y += imx/ +obj-y += innosilicon/ obj-y += synopsys/ diff --git a/drivers/gpu/drm/bridge/innosilicon/Kconfig b/drivers/gpu/drm/bridge/innosilicon/Kconfig new file mode 100644 index 000000000000..73dbed3b1c4d --- /dev/null +++ b/drivers/gpu/drm/bridge/innosilicon/Kconfig @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0-only +config DRM_INNO_HDMI + tristate + help + Support the common interface which is part of the INNO + Designware HDMI block. diff --git a/drivers/gpu/drm/bridge/innosilicon/Makefile b/drivers/gpu/drm/bridge/innosilicon/Makefile new file mode 100644 index 000000000000..3b3a961ab9fb --- /dev/null +++ b/drivers/gpu/drm/bridge/innosilicon/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_DRM_INNO_HDMI) += inno-hdmi.o diff --git a/drivers/gpu/drm/bridge/innosilicon/inno-hdmi.c b/drivers/gpu/drm/bridge/innosilicon/inno-hdmi.c new file mode 100644 index 000000000000..2378ce06a876 --- /dev/null +++ b/drivers/gpu/drm/bridge/innosilicon/inno-hdmi.c @@ -0,0 +1,587 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Zheng Yang <zhengyang@xxxxxxxxxxxxxx> + * Yakir Yang <ykk@xxxxxxxxxxxxxx> + * Copyright (C) 2024 StarFive Technology Co., Ltd. + */ + +#include <linux/irq.h> +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/hdmi.h> +#include <linux/i2c.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> + +#include <drm/bridge/inno_hdmi.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_edid.h> +#include <drm/drm_of.h> +#include <drm/drm_print.h> +#include <drm/drm_probe_helper.h> +#include <drm/drm_simple_kms_helper.h> + +#include "inno-hdmi.h" + +struct inno_hdmi_i2c { + struct i2c_adapter adap; + + u8 ddc_addr; + u8 segment_addr; + + struct mutex lock; /* For i2c operation. */ + struct completion cmp; +}; + +struct inno_hdmi *connector_to_inno_hdmi(struct drm_connector *connector) +{ + return container_of(connector, struct inno_hdmi, connector); +} +EXPORT_SYMBOL_GPL(connector_to_inno_hdmi); + +u8 hdmi_readb(struct inno_hdmi *hdmi, u16 offset) +{ + return readl_relaxed(hdmi->regs + (offset) * 0x04); +} +EXPORT_SYMBOL_GPL(hdmi_readb); + +void hdmi_writeb(struct inno_hdmi *hdmi, u16 offset, u32 val) +{ + writel_relaxed(val, hdmi->regs + (offset) * 0x04); +} +EXPORT_SYMBOL_GPL(hdmi_writeb); + +void hdmi_modb(struct inno_hdmi *hdmi, u16 offset, u32 msk, u32 val) +{ + u8 temp = hdmi_readb(hdmi, offset) & ~msk; + + temp |= val & msk; + hdmi_writeb(hdmi, offset, temp); +} +EXPORT_SYMBOL_GPL(hdmi_modb); + +void inno_hdmi_i2c_init(struct inno_hdmi *hdmi, unsigned long long rate) +{ + unsigned long long ddc_bus_freq = rate >> 2; + + do_div(ddc_bus_freq, 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); +} +EXPORT_SYMBOL_GPL(inno_hdmi_i2c_init); + +void inno_hdmi_sys_power(struct inno_hdmi *hdmi, bool enable) +{ + if (enable) + hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_ON); + else + hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_OFF); +} +EXPORT_SYMBOL_GPL(inno_hdmi_sys_power); + +static enum drm_connector_status +inno_hdmi_connector_detect(struct drm_connector *connector, bool force) +{ + struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector); + + return (hdmi_readb(hdmi, HDMI_STATUS) & m_HOTPLUG) ? + connector_status_connected : connector_status_disconnected; +} + +static int inno_hdmi_connector_get_modes(struct drm_connector *connector) +{ + struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector); + const struct drm_edid *drm_edid; + int ret = 0; + + if (!hdmi->ddc) + return 0; + + drm_edid = drm_edid_read_ddc(connector, hdmi->ddc); + drm_edid_connector_update(connector, drm_edid); + ret = drm_edid_connector_add_modes(connector); + drm_edid_free(drm_edid); + + return ret; +} + +static enum drm_mode_status +inno_hdmi_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) +{ + struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector); + + const struct inno_hdmi_plat_data *pdata = hdmi->plat_data; + enum drm_mode_status mode_status = MODE_OK; + + if (pdata->mode_valid) + mode_status = pdata->mode_valid(connector, mode); + + return mode_status; +} + +static void +inno_hdmi_connector_destroy_state(struct drm_connector *connector, + struct drm_connector_state *state) +{ + struct inno_hdmi_connector_state *inno_conn_state = + to_inno_hdmi_conn_state(state); + + __drm_atomic_helper_connector_destroy_state(&inno_conn_state->base); + kfree(inno_conn_state); +} + +static void inno_hdmi_connector_reset(struct drm_connector *connector) +{ + struct inno_hdmi_connector_state *inno_conn_state; + + if (connector->state) { + inno_hdmi_connector_destroy_state(connector, connector->state); + connector->state = NULL; + } + + inno_conn_state = kzalloc(sizeof(*inno_conn_state), GFP_KERNEL); + if (!inno_conn_state) + return; + + __drm_atomic_helper_connector_reset(connector, &inno_conn_state->base); + + inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_709; + inno_conn_state->enc_out_format = HDMI_COLORSPACE_RGB; + inno_conn_state->rgb_limited_range = false; +} + +static struct drm_connector_state * +inno_hdmi_connector_duplicate_state(struct drm_connector *connector) +{ + struct inno_hdmi_connector_state *inno_conn_state; + + if (WARN_ON(!connector->state)) + return NULL; + + inno_conn_state = kmemdup(to_inno_hdmi_conn_state(connector->state), + sizeof(*inno_conn_state), GFP_KERNEL); + + if (!inno_conn_state) + return NULL; + + __drm_atomic_helper_connector_duplicate_state(connector, + &inno_conn_state->base); + + return &inno_conn_state->base; +} + +static const struct drm_connector_funcs inno_hdmi_connector_funcs = { + .fill_modes = drm_helper_probe_single_connector_modes, + .detect = inno_hdmi_connector_detect, + .reset = inno_hdmi_connector_reset, + .atomic_duplicate_state = inno_hdmi_connector_duplicate_state, + .atomic_destroy_state = inno_hdmi_connector_destroy_state, +}; + +static struct drm_connector_helper_funcs inno_hdmi_connector_helper_funcs = { + .get_modes = inno_hdmi_connector_get_modes, + .mode_valid = inno_hdmi_connector_mode_valid, +}; + +static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi, + struct drm_encoder *encoder) +{ + struct device *dev = hdmi->dev; + const struct inno_hdmi_plat_data *pdata = hdmi->plat_data; + + if (RK3128_HDMI == pdata->soc_type || RK3036_HDMI == pdata->soc_type) + drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); + 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, pdata->helper_private); + + hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD; + + drm_connector_helper_add(&hdmi->connector, + &inno_hdmi_connector_helper_funcs); + + drmm_connector_init(drm, &hdmi->connector, + &inno_hdmi_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA, + hdmi->ddc); + + drm_connector_attach_encoder(&hdmi->connector, encoder); + + return 0; +} + +static irqreturn_t inno_hdmi_i2c_irq(struct inno_hdmi *hdmi) +{ + struct inno_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 inno_hdmi_hardirq(int irq, void *dev_id) +{ + struct inno_hdmi *hdmi = dev_id; + irqreturn_t ret = IRQ_NONE; + u8 interrupt; + + if (hdmi->i2c) + ret = inno_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 inno_hdmi_irq(int irq, void *dev_id) +{ + struct inno_hdmi *hdmi = dev_id; + + drm_helper_hpd_irq_event(hdmi->connector.dev); + + return IRQ_HANDLED; +} + +static int inno_hdmi_i2c_read(struct inno_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 inno_hdmi_i2c_write(struct inno_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 inno_hdmi_i2c_xfer(struct i2c_adapter *adap, + struct i2c_msg *msgs, int num) +{ + struct inno_hdmi *hdmi = i2c_get_adapdata(adap); + struct inno_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 = inno_hdmi_i2c_read(hdmi, &msgs[i]); + else + ret = inno_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 inno_hdmi_i2c_func(struct i2c_adapter *adapter) +{ + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; +} + +static const struct i2c_algorithm inno_hdmi_algorithm = { + .master_xfer = inno_hdmi_i2c_xfer, + .functionality = inno_hdmi_i2c_func, +}; + +static struct i2c_adapter *inno_hdmi_i2c_adapter(struct inno_hdmi *hdmi) +{ + struct i2c_adapter *adap; + struct inno_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->owner = THIS_MODULE; + adap->dev.parent = hdmi->dev; + adap->dev.of_node = hdmi->dev->of_node; + adap->algo = &inno_hdmi_algorithm; + strscpy(adap->name, "Inno HDMI", sizeof(adap->name)); + i2c_set_adapdata(adap, hdmi); + + ret = i2c_add_adapter(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\n", adap->name); + + return adap; +} + +int inno_hdmi_bind(struct drm_device *drm, struct inno_hdmi *hdmi, struct drm_encoder *encoder) +{ + int ret, irq; + struct platform_device *pdev = to_platform_device(hdmi->dev); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + ret = irq; + return ret; + } + + hdmi->ddc = inno_hdmi_i2c_adapter(hdmi); + if (IS_ERR(hdmi->ddc)) { + ret = PTR_ERR(hdmi->ddc); + hdmi->ddc = NULL; + return ret; + } + + ret = inno_hdmi_register(drm, hdmi, encoder); + if (ret) + goto err_put_adapter; + + /* Unmute hotplug interrupt */ + hdmi_modb(hdmi, HDMI_STATUS, m_MASK_INT_HOTPLUG, v_MASK_INT_HOTPLUG(1)); + + ret = devm_request_threaded_irq(hdmi->dev, irq, inno_hdmi_hardirq, + inno_hdmi_irq, IRQF_SHARED, + dev_name(hdmi->dev), hdmi); + if (ret) + goto err_put_adapter; + + return ret; +err_put_adapter: + i2c_put_adapter(hdmi->ddc); + return ret; +} +EXPORT_SYMBOL_GPL(inno_hdmi_bind); + +static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi, + enum hdmi_infoframe_type type) +{ + struct drm_connector *connector = &hdmi->connector; + + if (type != HDMI_INFOFRAME_TYPE_AVI) { + drm_err(connector->dev, + "Unsupported infoframe type: %u\n", type); + return; + } + + hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, INFOFRAME_AVI); +} + +static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi, + union hdmi_infoframe *frame, enum hdmi_infoframe_type type) +{ + struct drm_connector *connector = &hdmi->connector; + u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE]; + ssize_t rc, i; + + if (type != HDMI_INFOFRAME_TYPE_AVI) { + drm_err(connector->dev, + "Unsupported infoframe type: %u\n", type); + return 0; + } + + inno_hdmi_disable_frame(hdmi, type); + + rc = hdmi_infoframe_pack(frame, packed_frame, + sizeof(packed_frame)); + if (rc < 0) + return rc; + + for (i = 0; i < rc; i++) + hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i, + packed_frame[i]); + + return 0; +} + +int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi, struct drm_display_mode *mode) +{ + struct drm_connector *connector = &hdmi->connector; + struct drm_connector_state *conn_state = connector->state; + struct inno_hdmi_connector_state *inno_conn_state = + to_inno_hdmi_conn_state(conn_state); + union hdmi_infoframe frame; + int rc; + + rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, + &hdmi->connector, + mode); + if (rc) { + inno_hdmi_disable_frame(hdmi, HDMI_INFOFRAME_TYPE_AVI); + return rc; + } + + if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444) + frame.avi.colorspace = HDMI_COLORSPACE_YUV444; + else if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV422) + frame.avi.colorspace = HDMI_COLORSPACE_YUV422; + else + frame.avi.colorspace = HDMI_COLORSPACE_RGB; + + if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_RGB) { + drm_hdmi_avi_infoframe_quant_range(&frame.avi, + connector, mode, + inno_conn_state->rgb_limited_range ? + HDMI_QUANTIZATION_RANGE_LIMITED : + HDMI_QUANTIZATION_RANGE_FULL); + } else { + frame.avi.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT; + frame.avi.ycc_quantization_range = + HDMI_YCC_QUANTIZATION_RANGE_LIMITED; + } + + return inno_hdmi_upload_frame(hdmi, &frame, HDMI_INFOFRAME_TYPE_AVI); +} +EXPORT_SYMBOL_GPL(inno_hdmi_config_video_avi); + +int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi, struct drm_display_mode *mode) +{ + int value; + + /* Set detail external video timing polarity and interlace mode */ + value = v_EXTERANL_VIDEO(1); + if (hdmi->plat_data->soc_type == STARFIVE_HDMI) { + value |= mode->flags & DRM_MODE_FLAG_PHSYNC ? + v_HSYNC_POLARITY_SF(1) : v_HSYNC_POLARITY_SF(0); + value |= mode->flags & DRM_MODE_FLAG_PVSYNC ? + v_VSYNC_POLARITY_SF(1) : v_VSYNC_POLARITY_SF(0); + } else { + 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); + + /* Set detail external video timing */ + value = mode->htotal; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_H, (value >> 8) & 0xFF); + + value = mode->htotal - mode->hdisplay; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_H, (value >> 8) & 0xFF); + + value = mode->htotal - mode->hsync_start; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_H, (value >> 8) & 0xFF); + + value = mode->hsync_end - mode->hsync_start; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_H, (value >> 8) & 0xFF); + + value = mode->vtotal; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_H, (value >> 8) & 0xFF); + + 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); + + if (hdmi->plat_data->soc_type == STARFIVE_HDMI) + return 0; + + hdmi_writeb(hdmi, HDMI_PHY_PRE_DIV_RATIO, 0x1e); + hdmi_writeb(hdmi, HDMI_PHY_FEEDBACK_DIV_RATIO_LOW, 0x2c); + hdmi_writeb(hdmi, HDMI_PHY_FEEDBACK_DIV_RATIO_HIGH, 0x01); + + return 0; +} +EXPORT_SYMBOL_GPL(inno_hdmi_config_video_timing); + +MODULE_DESCRIPTION("INNO HDMI transmitter driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:inno-hdmi"); diff --git a/drivers/gpu/drm/bridge/innosilicon/inno-hdmi.h b/drivers/gpu/drm/bridge/innosilicon/inno-hdmi.h new file mode 100644 index 000000000000..233077cfb136 --- /dev/null +++ b/drivers/gpu/drm/bridge/innosilicon/inno-hdmi.h @@ -0,0 +1,97 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Zheng Yang <zhengyang@xxxxxxxxxxxxxx> + * Yakir Yang <ykk@xxxxxxxxxxxxxx> + * Copyright (C) 2023 StarFive Technology Co., Ltd. + */ + +#ifndef __INNO_H__ +#define __INNO_H__ + +#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 (1 << 6) +#define v_RST_ANALOG (0 << 6) +#define v_NOT_RST_ANALOG (1 << 6) +#define m_RST_DIGITAL (1 << 5) +#define v_RST_DIGITAL (0 << 5) +#define v_NOT_RST_DIGITAL (1 << 5) +#define m_REG_CLK_INV (1 << 4) +#define v_REG_CLK_NOT_INV (0 << 4) +#define v_REG_CLK_INV (1 << 4) +#define m_VCLK_INV (1 << 3) +#define v_VCLK_NOT_INV (0 << 3) +#define v_VCLK_INV (1 << 3) +#define m_REG_CLK_SOURCE (1 << 2) +#define v_REG_CLK_SOURCE_TMDS (0 << 2) +#define v_REG_CLK_SOURCE_SYS (1 << 2) +#define m_POWER (1 << 1) +#define v_PWR_ON (0 << 1) +#define v_PWR_OFF (1 << 1) +#define m_INT_POL (1 << 0) +#define v_INT_POL_HIGH 1 +#define v_INT_POL_LOW 0 + +#define HDMI_VIDEO_TIMING_CTL 0x08 +#define v_HSYNC_POLARITY(n) ((n) << 3) +#define v_VSYNC_POLARITY(n) ((n) << 2) +#define v_VSYNC_POLARITY_SF(n) ((n) << 3) +#define v_HSYNC_POLARITY_SF(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 (1 << 5) +#define m_INT_EDID_READY (1 << 2) + +#define HDMI_CONTROL_PACKET_BUF_INDEX 0x9f +enum { + INFOFRAME_VSI = 0x05, + INFOFRAME_AVI = 0x06, + INFOFRAME_AAI = 0x08, +}; + +#define HDMI_CONTROL_PACKET_ADDR 0xa0 +#define HDMI_MAXIMUM_INFO_FRAME_SIZE 0x11 + +#define HDMI_STATUS 0xc8 +#define m_HOTPLUG (1 << 7) +#define m_MASK_INT_HOTPLUG (1 << 5) +#define m_INT_HOTPLUG (1 << 1) +#define v_MASK_INT_HOTPLUG(n) (((n) & 0x1) << 5) + +#define HDMI_PHY_FEEDBACK_DIV_RATIO_LOW 0xe7 +#define v_FEEDBACK_DIV_LOW(n) ((n) & 0xff) +#define HDMI_PHY_FEEDBACK_DIV_RATIO_HIGH 0xe8 +#define v_FEEDBACK_DIV_HIGH(n) ((n) & 1) + +#define HDMI_PHY_PRE_DIV_RATIO 0xed +#define v_PRE_DIV_RATIO(n) ((n) & 0x1f) + +#endif /* __INNO_H__ */ diff --git a/include/drm/bridge/inno_hdmi.h b/include/drm/bridge/inno_hdmi.h new file mode 100644 index 000000000000..bc865f5343ce --- /dev/null +++ b/include/drm/bridge/inno_hdmi.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2023 StarFive Technology Co., Ltd. + */ + +#ifndef __INNO_COMMON_HDMI__ +#define __INNO_COMMON_HDMI__ + +#include <drm/drm_connector.h> +#include <drm/drm_encoder.h> + +struct inno_hdmi_connector_state { + struct drm_connector_state base; + unsigned int enc_out_format; + unsigned int colorimetry; + bool rgb_limited_range; +}; + +enum inno_hdmi_devtype { + RK3036_HDMI, + RK3128_HDMI, + STARFIVE_HDMI, +}; + +#define to_inno_hdmi_conn_state(conn_state) \ + container_of_const(conn_state, struct inno_hdmi_connector_state, base) + +struct inno_hdmi_phy_config { + unsigned long pixelclock; + u8 pre_emphasis; + u8 voltage_level_control; +}; + +struct inno_hdmi_plat_data { + enum inno_hdmi_devtype soc_type; + + /* Platform-specific mode validation*/ + enum drm_mode_status (*mode_valid)(struct drm_connector *connector, + struct drm_display_mode *mode); + /* Platform-specific encoder helper funcs*/ + const struct drm_encoder_helper_funcs *helper_private; + + /* Platform-specific phy_configs Optional*/ + struct inno_hdmi_phy_config *phy_configs; + struct inno_hdmi_phy_config *default_phy_config; +}; + +struct inno_hdmi { + struct device *dev; + void __iomem *regs; + + struct drm_connector connector; + struct inno_hdmi_i2c *i2c; + struct i2c_adapter *ddc; + const struct inno_hdmi_plat_data *plat_data; +}; + +u8 hdmi_readb(struct inno_hdmi *hdmi, u16 offset); +void hdmi_writeb(struct inno_hdmi *hdmi, u16 offset, u32 val); +void hdmi_modb(struct inno_hdmi *hdmi, u16 offset, u32 msk, u32 val); + +struct inno_hdmi *connector_to_inno_hdmi(struct drm_connector *connector); +void inno_hdmi_i2c_init(struct inno_hdmi *hdmi, unsigned long long rate); +int inno_hdmi_bind(struct drm_device *drm, struct inno_hdmi *hdmi, struct drm_encoder *encoder); +void inno_hdmi_sys_power(struct inno_hdmi *hdmi, bool enable); +int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi, struct drm_display_mode *mode); +int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi, struct drm_display_mode *mode); + +#endif /* __INNO_COMMON_HDMI__ */ -- 2.27.0
