@@ -6,3 +6,18 @@ config VIDEO_DWC_HDMI_PHY_E405
To compile this driver as a module, choose M here. The module
will be called dw-hdmi-phy-e405.
+
+config VIDEO_DWC_HDMI_RX
+ tristate "Synopsys Designware HDMI Receiver driver"
+ depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+ help
+ Support for Synopsys Designware HDMI RX controller.
+
+ To compile this driver as a module, choose M here. The module
+ will be called dw-hdmi-rx.
+
+config VIDEO_DWC_HDMI_RX_CEC
+ bool
+ depends on VIDEO_DWC_HDMI_RX
+ select CEC_CORE
+ select CEC_NOTIFIER
@@ -1 +1,2 @@
obj-$(CONFIG_VIDEO_DWC_HDMI_PHY_E405) += dw-hdmi-phy-e405.o
+obj-$(CONFIG_VIDEO_DWC_HDMI_RX) += dw-hdmi-rx.o
new file mode 100644
@@ -0,0 +1,1840 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+// Copyright (c) 2017 Synopsys, Inc. and/or its affiliates.
+// Synopsys DesignWare HDMI Receiver controller driver
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/v4l2-dv-timings.h>
+#include <linux/workqueue.h>
+#include <media/cec.h>
+#include <media/cec-notifier.h>
+#include <media/v4l2-async.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-dv-timings.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-subdev.h>
+#include <media/dwc/dw-hdmi-phy-pdata.h>
+#include <media/dwc/dw-hdmi-rx-pdata.h>
+#include "dw-hdmi-rx.h"
+
+#define HDMI_DEFAULT_TIMING V4L2_DV_BT_CEA_640X480P59_94
+#define HDMI_CEC_MAX_LOG_ADDRS CEC_MAX_LOG_ADDRS
+
+MODULE_AUTHOR("Jose Abreu <joabreu@synopsys.com>");
+MODULE_DESCRIPTION("DesignWare HDMI Receiver Driver");
+MODULE_LICENSE("Dual MIT/GPL");
+
+static const struct v4l2_dv_timings_cap dw_hdmi_timings_cap = {
+ .type = V4L2_DV_BT_656_1120,
+ .reserved = { 0 },
+ V4L2_INIT_BT_TIMINGS(
+ 640, 4096, /* min/max width */
+ 480, 4455, /* min/max height */
+ 20000000, 600000000, /* min/max pixelclock */
+ V4L2_DV_BT_STD_CEA861, /* standards */
+ /* capabilities */
+ V4L2_DV_BT_CAP_PROGRESSIVE
+ )
+};
+
+static const struct v4l2_event dw_hdmi_event_fmt = {
+ .type = V4L2_EVENT_SOURCE_CHANGE,
+ .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
+};
+
+enum dw_hdmi_state {
+ HDMI_STATE_NO_INIT = 0,
+ HDMI_STATE_POWER_OFF,
+ HDMI_STATE_PHY_CONFIG,
+ HDMI_STATE_EQUALIZER,
+ HDMI_STATE_VIDEO_UNSTABLE,
+ HDMI_STATE_POWER_ON,
+};
+
+struct dw_hdmi_dev {
+ struct v4l2_async_notifier v4l2_notifier;
+ struct v4l2_async_subdev phy_async_sd;
+ struct dw_hdmi_rx_pdata *config;
+ struct workqueue_struct *wq;
+ struct work_struct work;
+ enum dw_hdmi_state state;
+ bool registered;
+ bool pending_config;
+ bool force_off;
+ spinlock_t lock;
+ void __iomem *regs;
+ struct device_node *of_node;
+ struct v4l2_subdev sd;
+ struct v4l2_dv_timings timings;
+ struct dw_phy_pdata phy_config;
+ struct platform_device *notifier_pdev;
+ struct v4l2_subdev *phy_sd;
+ bool phy_eq_force;
+ u8 phy_jtag_addr;
+ struct device *dev;
+ u32 mbus_code;
+ unsigned int selected_input;
+ unsigned int configured_input;
+ struct clk *clk;
+ u32 cfg_clk;
+ struct cec_adapter *cec_adap;
+ struct cec_notifier *cec_notifier;
+ struct v4l2_ctrl_handler hdl;
+ struct v4l2_ctrl *detect_tx_5v_ctrl;
+};
+
+static const char *get_state_name(enum dw_hdmi_state state)
+{
+ switch (state) {
+ case HDMI_STATE_NO_INIT:
+ return "NO_INIT";
+ case HDMI_STATE_POWER_OFF:
+ return "POWER_OFF";
+ case HDMI_STATE_PHY_CONFIG:
+ return "PHY_CONFIG";
+ case HDMI_STATE_EQUALIZER:
+ return "EQUALIZER";
+ case HDMI_STATE_VIDEO_UNSTABLE:
+ return "VIDEO_UNSTABLE";
+ case HDMI_STATE_POWER_ON:
+ return "POWER_ON";
+ default:
+ return "UNKNOWN";
+ }
+}
+
+static inline void dw_hdmi_set_state(struct dw_hdmi_dev *dw_dev,
+ enum dw_hdmi_state new_state)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dw_dev->lock, flags);
+ dev_dbg(dw_dev->dev, "old_state=%s, new_state=%s\n",
+ get_state_name(dw_dev->state),
+ get_state_name(new_state));
+ dw_dev->state = new_state;
+ spin_unlock_irqrestore(&dw_dev->lock, flags);
+}
+
+static inline struct dw_hdmi_dev *to_dw_dev(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct dw_hdmi_dev, sd);
+}
+
+static inline struct dw_hdmi_dev *notifier_to_dw_dev(
+ struct v4l2_async_notifier *notifier)
+{
+ return container_of(notifier, struct dw_hdmi_dev, v4l2_notifier);
+}
+
+static inline void hdmi_writel(struct dw_hdmi_dev *dw_dev, u32 val, int reg)
+{
+ writel(val, dw_dev->regs + reg);
+}
+
+static inline u32 hdmi_readl(struct dw_hdmi_dev *dw_dev, int reg)
+{
+ return readl(dw_dev->regs + reg);
+}
+
+static void hdmi_modl(struct dw_hdmi_dev *dw_dev, u32 data, u32 mask, int reg)
+{
+ u32 val = hdmi_readl(dw_dev, reg) & ~mask;
+
+ val |= data & mask;
+ hdmi_writel(dw_dev, val, reg);
+}
+
+static void hdmi_mask_writel(struct dw_hdmi_dev *dw_dev, u32 data, int reg,
+ u32 shift, u32 mask)
+{
+ hdmi_modl(dw_dev, data << shift, mask, reg);
+}
+
+static u32 hdmi_mask_readl(struct dw_hdmi_dev *dw_dev, int reg, u32 shift,
+ u32 mask)
+{
+ return (hdmi_readl(dw_dev, reg) & mask) >> shift;
+}
+
+static bool dw_hdmi_5v_status(struct dw_hdmi_dev *dw_dev, int input)
+{
+ void __iomem *arg = dw_dev->config->dw_5v_arg;
+
+ if (dw_dev->config->dw_5v_status)
+ return dw_dev->config->dw_5v_status(arg, input);
+ return false;
+}
+
+static void dw_hdmi_5v_clear(struct dw_hdmi_dev *dw_dev)
+{
+ void __iomem *arg = dw_dev->config->dw_5v_arg;
+
+ if (dw_dev->config->dw_5v_clear)
+ dw_dev->config->dw_5v_clear(arg);
+}
+
+static inline bool is_off(struct dw_hdmi_dev *dw_dev)
+{
+ return dw_dev->state <= HDMI_STATE_POWER_OFF;
+}
+
+static bool has_signal(struct dw_hdmi_dev *dw_dev, unsigned int input)
+{
+ return dw_hdmi_5v_status(dw_dev, input);
+}
+
+#define HDMI_JTAG_TAP_ADDR_CMD 0
+#define HDMI_JTAG_TAP_WRITE_CMD 1
+#define HDMI_JTAG_TAP_READ_CMD 3
+
+static void hdmi_phy_jtag_send_pulse(struct dw_hdmi_dev *dw_dev, u8 tms, u8 tdi)
+{
+ u8 val;
+
+ val = tms ? HDMI_PHY_JTAG_TAP_IN_TMS : 0;
+ val |= tdi ? HDMI_PHY_JTAG_TAP_IN_TDI : 0;
+
+ hdmi_writel(dw_dev, 0, HDMI_PHY_JTAG_TAP_TCLK);
+ hdmi_writel(dw_dev, val, HDMI_PHY_JTAG_TAP_IN);
+ hdmi_writel(dw_dev, 1, HDMI_PHY_JTAG_TAP_TCLK);
+}
+
+static void hdmi_phy_jtag_shift_dr(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+}
+
+static void hdmi_phy_jtag_shift_ir(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+ hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+}
+
+static u16 hdmi_phy_jtag_send(struct dw_hdmi_dev *dw_dev, u8 cmd, u16 val)
+{
+ u32 in = (cmd << 16) | val;
+ u16 out = 0;
+ int i;
+
+ for (i = 0; i < 16; i++) {
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, in & 0x1);
+ out |= (hdmi_readl(dw_dev, HDMI_PHY_JTAG_TAP_OUT) & 0x1) << i;
+ in >>= 1;
+ }
+
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, in & 0x1);
+ in >>= 1;
+ hdmi_phy_jtag_send_pulse(dw_dev, 1, in & 0x1);
+
+ out |= (hdmi_readl(dw_dev, HDMI_PHY_JTAG_TAP_OUT) & 0x1) << ++i;
+ return out;
+}
+
+static void hdmi_phy_jtag_idle(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+}
+
+static void hdmi_phy_jtag_init(struct dw_hdmi_dev *dw_dev, u8 addr)
+{
+ int i;
+
+ hdmi_writel(dw_dev, addr, HDMI_PHY_JTAG_ADDR);
+ /* reset */
+ hdmi_writel(dw_dev, 0x10, HDMI_PHY_JTAG_TAP_IN);
+ hdmi_writel(dw_dev, 0x0, HDMI_PHY_JTAG_CONF);
+ hdmi_writel(dw_dev, 0x1, HDMI_PHY_JTAG_CONF);
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+ /* soft reset */
+ for (i = 0; i < 5; i++)
+ hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+ /* set slave address */
+ hdmi_phy_jtag_shift_ir(dw_dev);
+ for (i = 0; i < 7; i++) {
+ hdmi_phy_jtag_send_pulse(dw_dev, 0, addr & 0x1);
+ addr >>= 1;
+ }
+ hdmi_phy_jtag_send_pulse(dw_dev, 1, addr & 0x1);
+ hdmi_phy_jtag_idle(dw_dev);
+}
+
+static void hdmi_phy_jtag_write(struct dw_hdmi_dev *dw_dev, u16 val, u16 addr)
+{
+ hdmi_phy_jtag_shift_dr(dw_dev);
+ hdmi_phy_jtag_send(dw_dev, HDMI_JTAG_TAP_ADDR_CMD, addr << 8);
+ hdmi_phy_jtag_idle(dw_dev);
+ hdmi_phy_jtag_shift_dr(dw_dev);
+ hdmi_phy_jtag_send(dw_dev, HDMI_JTAG_TAP_WRITE_CMD, val);
+ hdmi_phy_jtag_idle(dw_dev);
+}
+
+static u16 hdmi_phy_jtag_read(struct dw_hdmi_dev *dw_dev, u16 addr)
+{
+ u16 val;
+
+ hdmi_phy_jtag_shift_dr(dw_dev);
+ hdmi_phy_jtag_send(dw_dev, HDMI_JTAG_TAP_ADDR_CMD, addr << 8);
+ hdmi_phy_jtag_idle(dw_dev);
+ hdmi_phy_jtag_shift_dr(dw_dev);
+ val = hdmi_phy_jtag_send(dw_dev, HDMI_JTAG_TAP_READ_CMD, 0xFFFF);
+ hdmi_phy_jtag_idle(dw_dev);
+
+ return val;
+}
+
+static void dw_hdmi_phy_write(void *arg, u16 val, u16 addr)
+{
+ struct dw_hdmi_dev *dw_dev = arg;
+ u16 rval;
+
+ hdmi_phy_jtag_init(dw_dev, dw_dev->phy_jtag_addr);
+ hdmi_phy_jtag_write(dw_dev, val, addr);
+ rval = hdmi_phy_jtag_read(dw_dev, addr);
+
+ if (rval != val) {
+ dev_err(dw_dev->dev,
+ "JTAG read-back failed: expected=0x%x, got=0x%x\n",
+ val, rval);
+ }
+}
+
+static u16 dw_hdmi_phy_read(void *arg, u16 addr)
+{
+ struct dw_hdmi_dev *dw_dev = arg;
+
+ hdmi_phy_jtag_init(dw_dev, dw_dev->phy_jtag_addr);
+ return hdmi_phy_jtag_read(dw_dev, addr);
+}
+
+static void dw_hdmi_phy_reset(void *arg, int enable)
+{
+ struct dw_hdmi_dev *dw_dev = arg;
+
+ hdmi_mask_writel(dw_dev, enable, HDMI_PHY_CTRL,
+ HDMI_PHY_CTRL_RESET_OFFSET,
+ HDMI_PHY_CTRL_RESET_MASK);
+}
+
+static void dw_hdmi_phy_pddq(void *arg, int enable)
+{
+ struct dw_hdmi_dev *dw_dev = arg;
+
+ hdmi_mask_writel(dw_dev, enable, HDMI_PHY_CTRL,
+ HDMI_PHY_CTRL_PDDQ_OFFSET,
+ HDMI_PHY_CTRL_PDDQ_MASK);
+}
+
+static void dw_hdmi_phy_svsmode(void *arg, int enable)
+{
+ struct dw_hdmi_dev *dw_dev = arg;
+
+ hdmi_mask_writel(dw_dev, enable, HDMI_PHY_CTRL,
+ HDMI_PHY_CTRL_SVSRETMODEZ_OFFSET,
+ HDMI_PHY_CTRL_SVSRETMODEZ_MASK);
+}
+
+static void dw_hdmi_zcal_reset(void *arg)
+{
+ struct dw_hdmi_dev *dw_dev = arg;
+
+ if (dw_dev->config->dw_zcal_reset)
+ dw_dev->config->dw_zcal_reset(dw_dev->config->dw_zcal_arg);
+}
+
+static bool dw_hdmi_zcal_done(void *arg)
+{
+ struct dw_hdmi_dev *dw_dev = arg;
+
+ if (dw_dev->config->dw_zcal_done)
+ return dw_dev->config->dw_zcal_done(dw_dev->config->dw_zcal_arg);
+ return true;
+}
+
+static bool dw_hdmi_tmds_valid(void *arg)
+{
+ struct dw_hdmi_dev *dw_dev = arg;
+
+ return hdmi_readl(dw_dev, HDMI_PLL_LCK_STS) & HDMI_PLL_LCK_STS_PLL_LOCKED;
+}
+
+static const struct dw_phy_funcs dw_hdmi_phy_funcs = {
+ .write = dw_hdmi_phy_write,
+ .read = dw_hdmi_phy_read,
+ .reset = dw_hdmi_phy_reset,
+ .pddq = dw_hdmi_phy_pddq,
+ .svsmode = dw_hdmi_phy_svsmode,
+ .zcal_reset = dw_hdmi_zcal_reset,
+ .zcal_done = dw_hdmi_zcal_done,
+ .tmds_valid = dw_hdmi_tmds_valid,
+};
+
+static const struct of_device_id dw_hdmi_supported_phys[] = {
+ { .compatible = "snps,dw-hdmi-phy-e405", .data = DW_PHY_E405_DRVNAME, },
+ { },
+};
+
+static struct device_node *dw_hdmi_get_phy_of_node(struct dw_hdmi_dev *dw_dev,
+ const struct of_device_id **found_id)
+{
+ struct device_node *child = NULL;
+ const struct of_device_id *id;
+
+ for_each_child_of_node(dw_dev->of_node, child) {
+ id = of_match_node(dw_hdmi_supported_phys, child);
+ if (id)
+ break;
+ }
+
+ if (!id)
+ return NULL;
+ if (found_id)
+ *found_id = id;
+
+ return child;
+}
+
+static int dw_hdmi_phy_init(struct dw_hdmi_dev *dw_dev)
+{
+ struct dw_phy_pdata *phy = &dw_dev->phy_config;
+ struct of_dev_auxdata lookup = { };
+ const struct of_device_id *of_id;
+ struct device_node *child;
+ const char *drvname;
+ int ret;
+
+ child = dw_hdmi_get_phy_of_node(dw_dev, &of_id);
+ if (!child || !of_id || !of_id->data) {
+ dev_err(dw_dev->dev, "no supported phy found in DT\n");
+ return -EINVAL;
+ }
+
+ drvname = of_id->data;
+ phy->funcs = &dw_hdmi_phy_funcs;
+ phy->funcs_arg = dw_dev;
+
+ lookup.compatible = (char *)of_id->compatible;
+ lookup.platform_data = phy;
+
+ request_module(drvname);
+
+ ret = of_platform_populate(dw_dev->of_node, NULL, &lookup, dw_dev->dev);
+ if (ret) {
+ dev_err(dw_dev->dev, "failed to populate phy driver\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void dw_hdmi_phy_exit(struct dw_hdmi_dev *dw_dev)
+{
+ of_platform_depopulate(dw_dev->dev);
+}
+
+static int dw_hdmi_phy_eq_init(struct dw_hdmi_dev *dw_dev, u16 acq, bool force)
+{
+ struct dw_phy_eq_command cmd = {
+ .result = 0,
+ .nacq = acq,
+ .force = force,
+ };
+ int ret;
+
+ ret = v4l2_subdev_call(dw_dev->phy_sd, core, ioctl,
+ DW_PHY_IOCTL_EQ_INIT, &cmd);
+ if (ret)
+ return ret;
+ return cmd.result;
+}
+
+static int dw_hdmi_phy_config(struct dw_hdmi_dev *dw_dev,
+ unsigned char color_depth, bool hdmi2, bool scrambling)
+{
+ struct dw_phy_config_command cmd = {
+ .result = 0,
+ .color_depth = color_depth,
+ .hdmi2 = hdmi2,
+ .scrambling = scrambling,
+ };
+ int ret;
+
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_CBUSIOCTRL,
+ HDMI_CBUSIOCTRL_DATAPATH_CBUSZ_OFFSET,
+ HDMI_CBUSIOCTRL_DATAPATH_CBUSZ_MASK);
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_CBUSIOCTRL,
+ HDMI_CBUSIOCTRL_SVSRETMODEZ_OFFSET,
+ HDMI_CBUSIOCTRL_SVSRETMODEZ_MASK);
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_CBUSIOCTRL,
+ HDMI_CBUSIOCTRL_PDDQ_OFFSET,
+ HDMI_CBUSIOCTRL_PDDQ_MASK);
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_CBUSIOCTRL,
+ HDMI_CBUSIOCTRL_RESET_OFFSET,
+ HDMI_CBUSIOCTRL_RESET_MASK);
+
+ ret = v4l2_subdev_call(dw_dev->phy_sd, core, ioctl,
+ DW_PHY_IOCTL_CONFIG, &cmd);
+ if (ret)
+ return ret;
+ return cmd.result;
+}
+
+static void dw_hdmi_phy_s_power(struct dw_hdmi_dev *dw_dev, bool on)
+{
+ v4l2_subdev_call(dw_dev->phy_sd, core, s_power, on);
+}
+
+static void dw_hdmi_event_source_change(struct dw_hdmi_dev *dw_dev)
+{
+ if (dw_dev->registered)
+ v4l2_subdev_notify_event(&dw_dev->sd, &dw_hdmi_event_fmt);
+}
+
+static int dw_hdmi_wait_phy_lock_poll(struct dw_hdmi_dev *dw_dev)
+{
+ int timeout = 10;
+
+ while (!dw_hdmi_tmds_valid(dw_dev) && timeout-- && !dw_dev->force_off)
+ usleep_range(5000, 10000);
+
+ if (!dw_hdmi_tmds_valid(dw_dev))
+ return -ETIMEDOUT;
+ return 0;
+}
+
+static void dw_hdmi_reset_datapath(struct dw_hdmi_dev *dw_dev)
+{
+ u32 val = HDMI_DMI_SW_RST_TMDS |
+ HDMI_DMI_SW_RST_HDCP |
+ HDMI_DMI_SW_RST_VID |
+ HDMI_DMI_SW_RST_PIXEL |
+ HDMI_DMI_SW_RST_CEC |
+ HDMI_DMI_SW_RST_AUD |
+ HDMI_DMI_SW_RST_BUS |
+ HDMI_DMI_SW_RST_HDMI |
+ HDMI_DMI_SW_RST_MODET;
+
+ hdmi_writel(dw_dev, val, HDMI_DMI_SW_RST);
+}
+
+static void dw_hdmi_wait_video_stable(struct dw_hdmi_dev *dw_dev)
+{
+ /*
+ * Empiric value. Video should be stable way longer before the
+ * end of this sleep time. Though, we can have some video change
+ * interrupts before the video is stable so filter them by sleeping.
+ */
+ msleep(200);
+}
+
+static void dw_hdmi_enable_ints(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_writel(dw_dev, HDMI_ISTS_CLK_CHANGE | HDMI_ISTS_PLL_LCK_CHG,
+ HDMI_IEN_SET);
+ hdmi_writel(dw_dev, (~0x0) & (~(HDMI_MD_ISTS_VOFS_LIN |
+ HDMI_MD_ISTS_VTOT_LIN |
+ HDMI_MD_ISTS_VACT_LIN |
+ HDMI_MD_ISTS_VS_CLK |
+ HDMI_MD_ISTS_VTOT_CLK |
+ HDMI_MD_ISTS_VS_ACT |
+ HDMI_MD_ISTS_ILACE)), HDMI_MD_IEN_SET);
+}
+
+static void dw_hdmi_disable_ints(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_writel(dw_dev, ~0x0, HDMI_IEN_CLR);
+ hdmi_writel(dw_dev, ~0x0, HDMI_MD_IEN_CLR);
+}
+
+static void dw_hdmi_clear_ints(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_writel(dw_dev, ~0x0, HDMI_ICLR);
+ hdmi_writel(dw_dev, ~0x0, HDMI_MD_ICLR);
+}
+
+static u32 dw_hdmi_get_int_val(struct dw_hdmi_dev *dw_dev, u32 ists, u32 ien)
+{
+ return hdmi_readl(dw_dev, ists) & hdmi_readl(dw_dev, ien);
+}
+
+#if IS_ENABLED(CONFIG_VIDEO_DWC_HDMI_RX_CEC)
+static void dw_hdmi_cec_enable_ints(struct dw_hdmi_dev *dw_dev)
+{
+ u32 mask = HDMI_AUD_CEC_ISTS_DONE | HDMI_AUD_CEC_ISTS_EOM |
+ HDMI_AUD_CEC_ISTS_NACK | HDMI_AUD_CEC_ISTS_ARBLST |
+ HDMI_AUD_CEC_ISTS_ERROR_INIT | HDMI_AUD_CEC_ISTS_ERROR_FOLL;
+
+ hdmi_writel(dw_dev, mask, HDMI_AUD_CEC_IEN_SET);
+ hdmi_writel(dw_dev, 0x0, HDMI_CEC_MASK);
+}
+
+static void dw_hdmi_cec_disable_ints(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_writel(dw_dev, ~0x0, HDMI_AUD_CEC_IEN_CLR);
+ hdmi_writel(dw_dev, ~0x0, HDMI_CEC_MASK);
+}
+
+static void dw_hdmi_cec_clear_ints(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_writel(dw_dev, ~0x0, HDMI_AUD_CEC_ICLR);
+}
+
+static void dw_hdmi_cec_tx_raw_status(struct dw_hdmi_dev *dw_dev, u32 stat)
+{
+ if (hdmi_readl(dw_dev, HDMI_CEC_CTRL) & HDMI_CEC_CTRL_SEND_MASK) {
+ dev_dbg(dw_dev->dev, "%s: tx is busy\n", __func__);
+ return;
+ }
+
+ if (stat & HDMI_AUD_CEC_ISTS_ARBLST) {
+ cec_transmit_attempt_done(dw_dev->cec_adap,
+ CEC_TX_STATUS_ARB_LOST);
+ return;
+ }
+
+ if (stat & HDMI_AUD_CEC_ISTS_NACK) {
+ cec_transmit_attempt_done(dw_dev->cec_adap, CEC_TX_STATUS_NACK);
+ return;
+ }
+
+ if (stat & HDMI_AUD_CEC_ISTS_ERROR_INIT) {
+ dev_dbg(dw_dev->dev, "%s: got low drive error\n", __func__);
+ cec_transmit_attempt_done(dw_dev->cec_adap,
+ CEC_TX_STATUS_LOW_DRIVE);
+ return;
+ }
+
+ if (stat & HDMI_AUD_CEC_ISTS_DONE) {
+ cec_transmit_attempt_done(dw_dev->cec_adap, CEC_TX_STATUS_OK);
+ return;
+ }
+}
+
+static void dw_hdmi_cec_received_msg(struct dw_hdmi_dev *dw_dev)
+{
+ struct cec_msg msg;
+ u8 i;
+
+ msg.len = hdmi_readl(dw_dev, HDMI_CEC_RX_CNT);
+ if (!msg.len || msg.len > HDMI_CEC_RX_DATA_MAX)
+ return; /* it's an invalid/non-existent message */
+
+ for (i = 0; i < msg.len; i++)
+ msg.msg[i] = hdmi_readl(dw_dev, HDMI_CEC_RX_DATA(i));
+
+ hdmi_writel(dw_dev, 0x0, HDMI_CEC_LOCK);
+ cec_received_msg(dw_dev->cec_adap, &msg);
+}
+
+static int dw_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable)
+{
+ struct dw_hdmi_dev *dw_dev = cec_get_drvdata(adap);
+
+ if (enable) {
+ hdmi_writel(dw_dev, 0x0, HDMI_CEC_ADDR_L);
+ hdmi_writel(dw_dev, 0x0, HDMI_CEC_ADDR_H);
+ hdmi_writel(dw_dev, 0x0, HDMI_CEC_LOCK);
+ dw_hdmi_cec_clear_ints(dw_dev);
+ dw_hdmi_cec_enable_ints(dw_dev);
+ } else {
+ hdmi_writel(dw_dev, 0x0, HDMI_CEC_ADDR_L);
+ hdmi_writel(dw_dev, 0x0, HDMI_CEC_ADDR_H);
+ dw_hdmi_cec_disable_ints(dw_dev);
+ dw_hdmi_cec_clear_ints(dw_dev);
+ }
+
+ return 0;
+}
+
+static int dw_hdmi_cec_adap_log_addr(struct cec_adapter *adap, u8 addr)
+{
+ struct dw_hdmi_dev *dw_dev = cec_get_drvdata(adap);
+ u32 tmp;
+
+ if (addr == CEC_LOG_ADDR_INVALID) {
+ hdmi_writel(dw_dev, 0x0, HDMI_CEC_ADDR_L);
+ hdmi_writel(dw_dev, 0x0, HDMI_CEC_ADDR_H);
+ return 0;
+ }
+
+ if (addr >= 8) {
+ tmp = hdmi_readl(dw_dev, HDMI_CEC_ADDR_H);
+ tmp |= BIT(addr - 8);
+ hdmi_writel(dw_dev, tmp, HDMI_CEC_ADDR_H);
+ } else {
+ tmp = hdmi_readl(dw_dev, HDMI_CEC_ADDR_L);
+ tmp |= BIT(addr);
+ hdmi_writel(dw_dev, tmp, HDMI_CEC_ADDR_L);
+ }
+
+ return 0;
+}
+
+static int dw_hdmi_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
+ u32 signal_free_time, struct cec_msg *msg)
+{
+ struct dw_hdmi_dev *dw_dev = cec_get_drvdata(adap);
+ u8 len = msg->len;
+ u32 reg;
+ int i;
+
+ if (hdmi_readl(dw_dev, HDMI_CEC_CTRL) & HDMI_CEC_CTRL_SEND_MASK) {
+ dev_err(dw_dev->dev, "%s: tx is busy\n", __func__);
+ return -EBUSY;
+ }
+
+ for (i = 0; i < len; i++)
+ hdmi_writel(dw_dev, msg->msg[i], HDMI_CEC_TX_DATA(i));
+
+ switch (signal_free_time) {
+ case CEC_SIGNAL_FREE_TIME_RETRY:
+ reg = 0x0;
+ break;
+ case CEC_SIGNAL_FREE_TIME_NEXT_XFER:
+ reg = 0x2;
+ break;
+ case CEC_SIGNAL_FREE_TIME_NEW_INITIATOR:
+ default:
+ reg = 0x1;
+ break;
+ }
+
+ hdmi_writel(dw_dev, len, HDMI_CEC_TX_CNT);
+ hdmi_mask_writel(dw_dev, reg, HDMI_CEC_CTRL,
+ HDMI_CEC_CTRL_FRAME_TYP_OFFSET,
+ HDMI_CEC_CTRL_FRAME_TYP_MASK);
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_CEC_CTRL,
+ HDMI_CEC_CTRL_SEND_OFFSET,
+ HDMI_CEC_CTRL_SEND_MASK);
+ return 0;
+}
+
+static const struct cec_adap_ops dw_hdmi_cec_adap_ops = {
+ .adap_enable = dw_hdmi_cec_adap_enable,
+ .adap_log_addr = dw_hdmi_cec_adap_log_addr,
+ .adap_transmit = dw_hdmi_cec_adap_transmit,
+};
+
+static void dw_hdmi_cec_irq_handler(struct dw_hdmi_dev *dw_dev)
+{
+ u32 cec_ists = dw_hdmi_get_int_val(dw_dev, HDMI_AUD_CEC_ISTS,
+ HDMI_AUD_CEC_IEN);
+
+ dw_hdmi_cec_clear_ints(dw_dev);
+
+ if (cec_ists) {
+ dw_hdmi_cec_tx_raw_status(dw_dev, cec_ists);
+ if (cec_ists & HDMI_AUD_CEC_ISTS_EOM)
+ dw_hdmi_cec_received_msg(dw_dev);
+ }
+}
+#endif
+
+static u8 dw_hdmi_get_curr_vic(struct dw_hdmi_dev *dw_dev, bool *is_hdmi_vic)
+{
+ u8 vic = hdmi_mask_readl(dw_dev, HDMI_PDEC_AVI_PB,
+ HDMI_PDEC_AVI_PB_VID_IDENT_CODE_OFFSET,
+ HDMI_PDEC_AVI_PB_VID_IDENT_CODE_MASK) & 0xff;
+
+ if (!vic) {
+ vic = hdmi_mask_readl(dw_dev, HDMI_PDEC_VSI_PAYLOAD0,
+ HDMI_PDEC_VSI_PAYLOAD0_HDMI_VIC_OFFSET,
+ HDMI_PDEC_VSI_PAYLOAD0_HDMI_VIC_MASK) & 0xff;
+ if (is_hdmi_vic)
+ *is_hdmi_vic = true;
+ } else {
+ if (is_hdmi_vic)
+ *is_hdmi_vic = false;
+ }
+
+ return vic;
+}
+
+static u64 dw_hdmi_get_pixelclk(struct dw_hdmi_dev *dw_dev)
+{
+ u32 rate = hdmi_mask_readl(dw_dev, HDMI_CKM_RESULT,
+ HDMI_CKM_RESULT_CLKRATE_OFFSET,
+ HDMI_CKM_RESULT_CLKRATE_MASK);
+ u32 evaltime = hdmi_mask_readl(dw_dev, HDMI_CKM_EVLTM,
+ HDMI_CKM_EVLTM_EVAL_TIME_OFFSET,
+ HDMI_CKM_EVLTM_EVAL_TIME_MASK);
+ u64 tmp = (u64)rate * (u64)dw_dev->cfg_clk * 1000000;
+
+ do_div(tmp, evaltime);
+ return tmp;
+}
+
+static u32 dw_hdmi_get_colordepth(struct dw_hdmi_dev *dw_dev)
+{
+ u32 dcm = hdmi_mask_readl(dw_dev, HDMI_STS,
+ HDMI_STS_DCM_CURRENT_MODE_OFFSET,
+ HDMI_STS_DCM_CURRENT_MODE_MASK);
+
+ switch (dcm) {
+ case 0x4:
+ return 24;
+ case 0x5:
+ return 30;
+ case 0x6:
+ return 36;
+ case 0x7:
+ return 48;
+ default:
+ return 24;
+ }
+}
+
+static void dw_hdmi_set_input(struct dw_hdmi_dev *dw_dev, u32 input)
+{
+ hdmi_mask_writel(dw_dev, input, HDMI_PHY_CTRL,
+ HDMI_PHY_CTRL_PORTSELECT_OFFSET,
+ HDMI_PHY_CTRL_PORTSELECT_MASK);
+}
+
+static void dw_hdmi_enable_hpd(struct dw_hdmi_dev *dw_dev, u32 input_mask)
+{
+ hdmi_mask_writel(dw_dev, input_mask, HDMI_SETUP_CTRL,
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_OFFSET,
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_MASK);
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_SETUP_CTRL,
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_OFFSET,
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_MASK);
+}
+
+static void dw_hdmi_disable_hpd(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_mask_writel(dw_dev, 0x0, HDMI_SETUP_CTRL,
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_OFFSET,
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_MASK);
+ hdmi_mask_writel(dw_dev, 0x0, HDMI_SETUP_CTRL,
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_OFFSET,
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_MASK);
+}
+
+static void dw_hdmi_enable_scdc(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_SCDC_CONFIG,
+ HDMI_SCDC_CONFIG_POWERPROVIDED_OFFSET,
+ HDMI_SCDC_CONFIG_POWERPROVIDED_MASK);
+}
+
+static void dw_hdmi_disable_scdc(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_mask_writel(dw_dev, 0x0, HDMI_SCDC_CONFIG,
+ HDMI_SCDC_CONFIG_POWERPROVIDED_OFFSET,
+ HDMI_SCDC_CONFIG_POWERPROVIDED_MASK);
+}
+
+static int dw_hdmi_config(struct dw_hdmi_dev *dw_dev, u32 input)
+{
+ int eqret, ret = 0;
+
+ while (1) {
+ /* Give up silently if we are forcing off */
+ if (dw_dev->force_off) {
+ ret = 0;
+ goto out;
+ }
+ /* Give up silently if input has disconnected */
+ if (!has_signal(dw_dev, input)) {
+ ret = 0;
+ goto out;
+ }
+
+ switch (dw_dev->state) {
+ case HDMI_STATE_POWER_OFF:
+ dw_hdmi_disable_ints(dw_dev);
+ dw_hdmi_set_state(dw_dev, HDMI_STATE_PHY_CONFIG);
+ break;
+ case HDMI_STATE_PHY_CONFIG:
+ dw_hdmi_phy_s_power(dw_dev, true);
+ dw_hdmi_phy_config(dw_dev, 8, false, false);
+ dw_hdmi_set_state(dw_dev, HDMI_STATE_EQUALIZER);
+ break;
+ case HDMI_STATE_EQUALIZER:
+ eqret = dw_hdmi_phy_eq_init(dw_dev, 5,
+ dw_dev->phy_eq_force);
+ ret = dw_hdmi_wait_phy_lock_poll(dw_dev);
+
+ /* Do not force equalizer */
+ dw_dev->phy_eq_force = false;
+
+ if (ret || eqret) {
+ if (ret || eqret == -ETIMEDOUT) {
+ /* No TMDSVALID signal:
+ * - force equalizer */
+ dw_dev->phy_eq_force = true;
+ }
+ break;
+ }
+
+ dw_hdmi_set_state(dw_dev, HDMI_STATE_VIDEO_UNSTABLE);
+ break;
+ case HDMI_STATE_VIDEO_UNSTABLE:
+ dw_hdmi_reset_datapath(dw_dev);
+ dw_hdmi_wait_video_stable(dw_dev);
+ dw_hdmi_clear_ints(dw_dev);
+ dw_hdmi_enable_ints(dw_dev);
+ dw_hdmi_set_state(dw_dev, HDMI_STATE_POWER_ON);
+ break;
+ case HDMI_STATE_POWER_ON:
+ break;
+ default:
+ dev_err(dw_dev->dev, "%s called with state (%d)\n",
+ __func__, dw_dev->state);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (dw_dev->state == HDMI_STATE_POWER_ON) {
+ dev_info(dw_dev->dev, "HDMI-RX configured\n");
+ dw_hdmi_event_source_change(dw_dev);
+ return 0;
+ }
+ }
+
+out:
+ dw_hdmi_set_state(dw_dev, HDMI_STATE_POWER_OFF);
+ return ret;
+}
+
+static void dw_hdmi_config_hdcp(struct dw_hdmi_dev *dw_dev)
+{
+ hdmi_mask_writel(dw_dev, 0x0, HDMI_HDCP22_CONTROL,
+ HDMI_HDCP22_CONTROL_OVR_VAL_OFFSET,
+ HDMI_HDCP22_CONTROL_OVR_VAL_MASK);
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_HDCP22_CONTROL,
+ HDMI_HDCP22_CONTROL_OVR_EN_OFFSET,
+ HDMI_HDCP22_CONTROL_OVR_EN_MASK);
+}
+
+static int __dw_hdmi_power_on(struct dw_hdmi_dev *dw_dev, u32 input)
+{
+ unsigned long flags;
+ int ret;
+
+ ret = dw_hdmi_config(dw_dev, input);
+
+ spin_lock_irqsave(&dw_dev->lock, flags);
+ dw_dev->pending_config = false;
+ spin_unlock_irqrestore(&dw_dev->lock, flags);
+
+ return ret;
+}
+
+static void dw_hdmi_work_handler(struct work_struct *work)
+{
+ struct dw_hdmi_dev *dw_dev = container_of(work, struct dw_hdmi_dev, work);
+
+ __dw_hdmi_power_on(dw_dev, dw_dev->configured_input);
+}
+
+static int dw_hdmi_power_on(struct dw_hdmi_dev *dw_dev, u32 input)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dw_dev->lock, flags);
+ if (dw_dev->pending_config) {
+ spin_unlock_irqrestore(&dw_dev->lock, flags);
+ return 0;
+ }
+
+ INIT_WORK(&dw_dev->work, dw_hdmi_work_handler);
+ dw_dev->configured_input = input;
+ dw_dev->pending_config = true;
+ queue_work(dw_dev->wq, &dw_dev->work);
+ spin_unlock_irqrestore(&dw_dev->lock, flags);
+ return 0;
+}
+
+static void dw_hdmi_power_off(struct dw_hdmi_dev *dw_dev)
+{
+ unsigned long flags;
+
+ dw_dev->force_off = true;
+ flush_workqueue(dw_dev->wq);
+ dw_dev->force_off = false;
+
+ spin_lock_irqsave(&dw_dev->lock, flags);
+ dw_dev->pending_config = false;
+ dw_dev->state = HDMI_STATE_POWER_OFF;
+ spin_unlock_irqrestore(&dw_dev->lock, flags);
+
+ /* Reset variables */
+ dw_dev->phy_eq_force = true;
+
+ /* Send source change event to userspace */
+ dw_hdmi_event_source_change(dw_dev);
+}
+
+static irqreturn_t dw_hdmi_irq_handler(int irq, void *dev_data)
+{
+ struct dw_hdmi_dev *dw_dev = dev_data;
+ u32 hdmi_ists = dw_hdmi_get_int_val(dw_dev, HDMI_ISTS, HDMI_IEN);
+ u32 md_ists = dw_hdmi_get_int_val(dw_dev, HDMI_MD_ISTS, HDMI_MD_IEN);
+
+ dw_hdmi_clear_ints(dw_dev);
+
+ if ((hdmi_ists & HDMI_ISTS_CLK_CHANGE) ||
+ (hdmi_ists & HDMI_ISTS_PLL_LCK_CHG) || md_ists) {
+ dw_hdmi_power_off(dw_dev);
+ if (has_signal(dw_dev, dw_dev->configured_input))
+ dw_hdmi_power_on(dw_dev, dw_dev->configured_input);
+ }
+
+#if IS_ENABLED(CONFIG_VIDEO_DWC_HDMI_RX_CEC)
+ dw_hdmi_cec_irq_handler(dw_dev);
+#endif
+
+ return IRQ_HANDLED;
+}
+
+static void dw_hdmi_detect_tx_5v(struct dw_hdmi_dev *dw_dev)
+{
+ unsigned int input_count = 4; /* TODO: Get from DT node this value */
+ unsigned int old_input = dw_dev->configured_input;
+ unsigned int new_input = old_input;
+ bool pending_config = false, current_on = true;
+ u32 stat = 0;
+ int i;
+
+ if (!has_signal(dw_dev, old_input)) {
+ dw_hdmi_disable_ints(dw_dev);
+ dw_hdmi_power_off(dw_dev);
+ current_on = false;
+ }
+
+ for (i = 0; i < input_count; i++) {
+ bool on = has_signal(dw_dev, i);
+ stat |= on << i;
+
+ if (is_off(dw_dev) && on && !pending_config) {
+ dw_hdmi_power_on(dw_dev, i);
+ dw_hdmi_set_input(dw_dev, i);
+ new_input = i;
+ pending_config = true;
+ }
+ }
+
+ if ((new_input == old_input) && !pending_config && !current_on)
+ dw_hdmi_phy_s_power(dw_dev, false);
+
+ if (stat) {
+ /*
+ * If there are any connected ports enable the HPD and the SCDC
+ * for these ports.
+ */
+ dw_hdmi_enable_scdc(dw_dev);
+ dw_hdmi_enable_hpd(dw_dev, stat);
+ } else {
+ /*
+ * If there are no connected ports disable whole HPD and SCDC
+ * also.
+ */
+ dw_hdmi_disable_hpd(dw_dev);
+ dw_hdmi_disable_scdc(dw_dev);
+ }
+
+ v4l2_ctrl_s_ctrl(dw_dev->detect_tx_5v_ctrl, stat);
+ dev_dbg(dw_dev->dev, "%s: stat=0x%x\n", __func__, stat);
+}
+
+static irqreturn_t dw_hdmi_5v_irq_handler(int irq, void *dev_data)
+{
+ struct dw_hdmi_dev *dw_dev = dev_data;
+
+ dw_hdmi_detect_tx_5v(dw_dev);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t dw_hdmi_5v_hard_irq_handler(int irq, void *dev_data)
+{
+ struct dw_hdmi_dev *dw_dev = dev_data;
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+ dw_hdmi_5v_clear(dw_dev);
+ return IRQ_WAKE_THREAD;
+}
+
+static int dw_hdmi_s_routing(struct v4l2_subdev *sd, u32 input, u32 output,
+ u32 config)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ if (!has_signal(dw_dev, input))
+ return -EINVAL;
+
+ dw_dev->selected_input = input;
+ if (input == dw_dev->configured_input)
+ return 0;
+
+ dw_hdmi_power_off(dw_dev);
+ return dw_hdmi_power_on(dw_dev, input);
+}
+
+static int dw_hdmi_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ *status = 0;
+ if (!has_signal(dw_dev, dw_dev->selected_input))
+ *status |= V4L2_IN_ST_NO_POWER;
+ if (is_off(dw_dev))
+ *status |= V4L2_IN_ST_NO_SIGNAL;
+
+ dev_dbg(dw_dev->dev, "%s: status=0x%x\n", __func__, *status);
+ return 0;
+}
+
+static int dw_hdmi_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parm)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+ /* TODO: Use helper to compute timeperframe */
+ parm->parm.capture.timeperframe.numerator = 1;
+ parm->parm.capture.timeperframe.denominator = 60;
+ return 0;
+}
+
+static int dw_hdmi_s_dv_timings(struct v4l2_subdev *sd,
+ struct v4l2_dv_timings *timings)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+ if (!v4l2_valid_dv_timings(timings, &dw_hdmi_timings_cap, NULL, NULL))
+ return -EINVAL;
+ if (v4l2_match_dv_timings(timings, &dw_dev->timings, 0, false))
+ return 0;
+
+ dw_dev->timings = *timings;
+ return 0;
+}
+
+static int dw_hdmi_g_dv_timings(struct v4l2_subdev *sd,
+ struct v4l2_dv_timings *timings)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+ *timings = dw_dev->timings;
+ return 0;
+}
+
+static int dw_hdmi_query_dv_timings(struct v4l2_subdev *sd,
+ struct v4l2_dv_timings *timings)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+ struct v4l2_bt_timings *bt = &timings->bt;
+ bool is_hdmi_vic;
+ u32 htot, hofs;
+ u32 vtot;
+ u8 vic;
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+ memset(timings, 0, sizeof(*timings));
+
+ timings->type = V4L2_DV_BT_656_1120;
+ bt->width = hdmi_readl(dw_dev, HDMI_MD_HACT_PX);
+ bt->height = hdmi_readl(dw_dev, HDMI_MD_VAL);
+ bt->interlaced = hdmi_readl(dw_dev, HDMI_MD_STS) & HDMI_MD_STS_ILACE ?
+ V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;
+
+ if (hdmi_readl(dw_dev, HDMI_ISTS) & HDMI_ISTS_VS_POL_ADJ)
+ bt->polarities |= V4L2_DV_VSYNC_POS_POL;
+ if (hdmi_readl(dw_dev, HDMI_ISTS) & HDMI_ISTS_HS_POL_ADJ)
+ bt->polarities |= V4L2_DV_HSYNC_POS_POL;
+
+ bt->pixelclock = dw_hdmi_get_pixelclk(dw_dev);
+
+ /* HTOT = HACT + HFRONT + HSYNC + HBACK */
+ htot = hdmi_mask_readl(dw_dev, HDMI_MD_HT1,
+ HDMI_MD_HT1_HTOT_PIX_OFFSET,
+ HDMI_MD_HT1_HTOT_PIX_MASK);
+ /* HOFS = HSYNC + HBACK */
+ hofs = hdmi_mask_readl(dw_dev, HDMI_MD_HT1,
+ HDMI_MD_HT1_HOFS_PIX_OFFSET,
+ HDMI_MD_HT1_HOFS_PIX_MASK);
+
+ bt->hfrontporch = htot - hofs - bt->width;
+ bt->hsync = hdmi_mask_readl(dw_dev, HDMI_MD_HT0,
+ HDMI_MD_HT0_HS_CLK_OFFSET,
+ HDMI_MD_HT0_HS_CLK_MASK);
+ bt->hbackporch = hofs - bt->hsync;
+
+ /* VTOT = VACT + VFRONT + VSYNC + VBACK */
+ vtot = hdmi_readl(dw_dev, HDMI_MD_VTL);
+
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_MD_VCTRL,
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_OFFSET,
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_MASK);
+ msleep(50); /* Wait for 1 field */
+ bt->vsync = hdmi_readl(dw_dev, HDMI_MD_VOL);
+
+ hdmi_mask_writel(dw_dev, 0x0, HDMI_MD_VCTRL,
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_OFFSET,
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_MASK);
+ msleep(50); /* Wait for 1 field */
+ bt->vbackporch = hdmi_readl(dw_dev, HDMI_MD_VOL);
+ bt->vfrontporch = vtot - bt->height - bt->vsync - bt->vbackporch;
+
+ if (bt->interlaced == V4L2_DV_INTERLACED) {
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_MD_VCTRL,
+ HDMI_MD_VCTRL_V_MODE_OFFSET,
+ HDMI_MD_VCTRL_V_MODE_MASK);
+ msleep(100); /* Wait for 2 fields */
+
+ vtot = hdmi_readl(dw_dev, HDMI_MD_VTL);
+ hdmi_mask_writel(dw_dev, 0x1, HDMI_MD_VCTRL,
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_OFFSET,
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_MASK);
+ msleep(50); /* Wait for 1 field */
+ bt->il_vsync = hdmi_readl(dw_dev, HDMI_MD_VOL);
+
+ hdmi_mask_writel(dw_dev, 0x0, HDMI_MD_VCTRL,
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_OFFSET,
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_MASK);
+ msleep(50);
+ bt->il_vbackporch = hdmi_readl(dw_dev, HDMI_MD_VOL);
+ bt->il_vfrontporch = vtot - bt->height - bt->il_vsync -
+ bt->il_vbackporch;
+
+ hdmi_mask_writel(dw_dev, 0x0, HDMI_MD_VCTRL,
+ HDMI_MD_VCTRL_V_MODE_OFFSET,
+ HDMI_MD_VCTRL_V_MODE_MASK);
+ }
+
+ bt->standards = V4L2_DV_BT_STD_CEA861;
+
+ vic = dw_hdmi_get_curr_vic(dw_dev, &is_hdmi_vic);
+ if (vic) {
+ if (is_hdmi_vic) {
+ bt->flags |= V4L2_DV_FL_HAS_HDMI_VIC;
+ bt->hdmi_vic = vic;
+ bt->cea861_vic = 0;
+ } else {
+ bt->flags |= V4L2_DV_FL_HAS_CEA861_VIC;
+ bt->hdmi_vic = 0;
+ bt->cea861_vic = vic;
+ }
+ }
+
+ return 0;
+}
+
+static int dw_hdmi_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+ if (code->index != 0)
+ return -EINVAL;
+
+ code->code = dw_dev->mbus_code;
+ return 0;
+}
+
+static int dw_hdmi_fill_format(struct dw_hdmi_dev *dw_dev,
+ struct v4l2_mbus_framefmt *format)
+{
+ memset(format, 0, sizeof(*format));
+
+ format->width = dw_dev->timings.bt.width;
+ format->height = dw_dev->timings.bt.height;
+ format->colorspace = V4L2_COLORSPACE_SRGB;
+ format->code = dw_dev->mbus_code;
+ format->field = V4L2_FIELD_NONE;
+ return 0;
+}
+
+static int dw_hdmi_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+ return dw_hdmi_fill_format(dw_dev, &format->format);
+}
+
+static int dw_hdmi_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+ if (format->format.code != dw_dev->mbus_code) {
+ dev_dbg(dw_dev->dev, "invalid format\n");
+ return -EINVAL;
+ }
+
+ return dw_hdmi_get_fmt(sd, cfg, format);
+}
+
+static int dw_hdmi_dv_timings_cap(struct v4l2_subdev *sd,
+ struct v4l2_dv_timings_cap *cap)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+ unsigned int pad = cap->pad;
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+ *cap = dw_hdmi_timings_cap;
+ cap->pad = pad;
+ return 0;
+}
+
+static int dw_hdmi_enum_dv_timings(struct v4l2_subdev *sd,
+ struct v4l2_enum_dv_timings *timings)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ dev_dbg(dw_dev->dev, "%s\n", __func__);
+ return v4l2_enum_dv_timings_cap(timings, &dw_hdmi_timings_cap,
+ NULL, NULL);
+}
+
+static int dw_hdmi_log_status(struct v4l2_subdev *sd)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+ struct v4l2_dv_timings timings;
+
+ v4l2_info(sd, "--- Chip configuration ---\n");
+ v4l2_info(sd, "cfg_clk=%dMHz\n", dw_dev->cfg_clk);
+ v4l2_info(sd, "phy_drv=%s, phy_jtag_addr=0x%x\n",
+ dw_dev->phy_sd ? "present" : "not present",
+ dw_dev->phy_jtag_addr);
+
+ v4l2_info(sd, "--- Chip status ---\n");
+ v4l2_info(sd, "selected_input=%d: signal=%d\n", dw_dev->selected_input,
+ has_signal(dw_dev, dw_dev->selected_input));
+ v4l2_info(sd, "configured_input=%d: signal=%d\n",
+ dw_dev->configured_input,
+ has_signal(dw_dev, dw_dev->configured_input));
+
+ v4l2_info(sd, "--- Video status ---\n");
+ v4l2_info(sd, "type=%s, color_depth=%dbits",
+ hdmi_readl(dw_dev, HDMI_PDEC_STS) &
+ HDMI_PDEC_STS_DVIDET ? "dvi" : "hdmi",
+ dw_hdmi_get_colordepth(dw_dev));
+
+ v4l2_info(sd, "--- Video timings ---\n");
+ if (dw_hdmi_query_dv_timings(sd, &timings))
+ v4l2_info(sd, "No video detected\n");
+ else
+ v4l2_print_dv_timings(sd->name, "Detected format: ",
+ &timings, true);
+ v4l2_print_dv_timings(sd->name, "Configured format: ",
+ &dw_dev->timings, true);
+
+ v4l2_ctrl_subdev_log_status(sd);
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static void dw_hdmi_invalid_register(struct dw_hdmi_dev *dw_dev, u64 reg)
+{
+ dev_err(dw_dev->dev, "register 0x%llx not supported\n", reg);
+ dev_err(dw_dev->dev, "0x0000-0x7fff: Main controller map\n");
+ dev_err(dw_dev->dev, "0x8000-0x80ff: PHY map\n");
+}
+
+static bool dw_hdmi_is_reserved_register(struct dw_hdmi_dev *dw_dev, u32 reg)
+{
+ /*
+ * NOTE: Some of the HDCP registers are write only. This means that
+ * a read from these registers will never return and can block the bus
+ * in some architectures. Disable the read to these registers and also
+ * disable the write as a safety measure because userspace should not
+ * be able to set HDCP registers.
+ */
+ if (reg >= HDMI_HDCP_CTRL && reg <= HDMI_HDCP_STS)
+ return true;
+ if (reg == HDMI_HDCP22_CONTROL)
+ return true;
+ if (reg == HDMI_HDCP22_STATUS)
+ return true;
+ return false;
+}
+
+static int dw_hdmi_g_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ switch (reg->reg >> 15) {
+ case 0: /* Controller core read */
+ if (dw_hdmi_is_reserved_register(dw_dev, reg->reg & 0x7fff))
+ return -EINVAL;
+
+ reg->size = 4;
+ reg->val = hdmi_readl(dw_dev, reg->reg & 0x7fff);
+ return 0;
+ case 1: /* PHY read */
+ if ((reg->reg & ~0xff) != BIT(15))
+ break;
+
+ reg->size = 2;
+ reg->val = dw_hdmi_phy_read(dw_dev, reg->reg & 0xff);
+ return 0;
+ default:
+ break;
+ }
+
+ dw_hdmi_invalid_register(dw_dev, reg->reg);
+ return 0;
+}
+
+static int dw_hdmi_s_register(struct v4l2_subdev *sd,
+ const struct v4l2_dbg_register *reg)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ switch (reg->reg >> 15) {
+ case 0: /* Controller core write */
+ if (dw_hdmi_is_reserved_register(dw_dev, reg->reg & 0x7fff))
+ return -EINVAL;
+
+ hdmi_writel(dw_dev, reg->val & GENMASK(31,0), reg->reg & 0x7fff);
+ return 0;
+ case 1: /* PHY write */
+ if ((reg->reg & ~0xff) != BIT(15))
+ break;
+ dw_hdmi_phy_write(dw_dev, reg->val & 0xffff, reg->reg & 0xff);
+ return 0;
+ default:
+ break;
+ }
+
+ dw_hdmi_invalid_register(dw_dev, reg->reg);
+ return 0;
+}
+#endif
+
+static int dw_hdmi_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
+ struct v4l2_event_subscription *sub)
+{
+ switch (sub->type) {
+ case V4L2_EVENT_SOURCE_CHANGE:
+ return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
+ default:
+ return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
+ }
+}
+
+static int dw_hdmi_registered(struct v4l2_subdev *sd)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+ int ret;
+
+ ret = cec_register_adapter(dw_dev->cec_adap, dw_dev->dev);
+ if (ret) {
+ dev_err(dw_dev->dev, "failed to register CEC adapter\n");
+ cec_delete_adapter(dw_dev->cec_adap);
+ return ret;
+ }
+
+ cec_register_cec_notifier(dw_dev->cec_adap, dw_dev->cec_notifier);
+ dw_dev->registered = true;
+
+ return 0;
+}
+
+static void dw_hdmi_unregistered(struct v4l2_subdev *sd)
+{
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ cec_unregister_adapter(dw_dev->cec_adap);
+ cec_notifier_put(dw_dev->cec_notifier);
+ v4l2_async_notifier_unregister(&dw_dev->v4l2_notifier);
+}
+
+static const struct v4l2_subdev_core_ops dw_hdmi_sd_core_ops = {
+ .log_status = dw_hdmi_log_status,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = dw_hdmi_g_register,
+ .s_register = dw_hdmi_s_register,
+#endif
+ .subscribe_event = dw_hdmi_subscribe_event,
+};
+
+static const struct v4l2_subdev_video_ops dw_hdmi_sd_video_ops = {
+ .s_routing = dw_hdmi_s_routing,
+ .g_input_status = dw_hdmi_g_input_status,
+ .g_parm = dw_hdmi_g_parm,
+ .s_dv_timings = dw_hdmi_s_dv_timings,
+ .g_dv_timings = dw_hdmi_g_dv_timings,
+ .query_dv_timings = dw_hdmi_query_dv_timings,
+};
+
+static const struct v4l2_subdev_pad_ops dw_hdmi_sd_pad_ops = {
+ .enum_mbus_code = dw_hdmi_enum_mbus_code,
+ .get_fmt = dw_hdmi_get_fmt,
+ .set_fmt = dw_hdmi_set_fmt,
+ .dv_timings_cap = dw_hdmi_dv_timings_cap,
+ .enum_dv_timings = dw_hdmi_enum_dv_timings,
+};
+
+static const struct v4l2_subdev_ops dw_hdmi_sd_ops = {
+ .core = &dw_hdmi_sd_core_ops,
+ .video = &dw_hdmi_sd_video_ops,
+ .pad = &dw_hdmi_sd_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops dw_hdmi_internal_ops = {
+ .registered = dw_hdmi_registered,
+ .unregistered = dw_hdmi_unregistered,
+};
+
+static int dw_hdmi_v4l2_notify_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *subdev, struct v4l2_async_subdev *asd)
+{
+ struct dw_hdmi_dev *dw_dev = notifier_to_dw_dev(notifier);
+
+ if (dw_dev->phy_async_sd.match.fwnode.fwnode == dev_fwnode(subdev->dev)) {
+ dev_dbg(dw_dev->dev, "found new subdev '%s'\n", subdev->name);
+ dw_dev->phy_sd = subdev;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static void dw_hdmi_v4l2_notify_unbind(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *subdev, struct v4l2_async_subdev *asd)
+{
+ struct dw_hdmi_dev *dw_dev = notifier_to_dw_dev(notifier);
+
+ if (dw_dev->phy_sd == subdev) {
+ dev_dbg(dw_dev->dev, "unbinding '%s'\n", subdev->name);
+ dw_dev->phy_sd = NULL;
+ }
+}
+
+static const struct v4l2_async_notifier_operations dw_hdmi_notifier_ops = {
+ .bound = dw_hdmi_v4l2_notify_bound,
+ .unbind = dw_hdmi_v4l2_notify_unbind,
+};
+
+static int dw_hdmi_v4l2_init_notifier(struct dw_hdmi_dev *dw_dev)
+{
+ struct v4l2_async_subdev **subdevs = NULL;
+ struct device_node *child = NULL;
+
+ subdevs = devm_kzalloc(dw_dev->dev, sizeof(*subdevs), GFP_KERNEL);
+ if (!subdevs)
+ return -ENOMEM;
+
+ child = dw_hdmi_get_phy_of_node(dw_dev, NULL);
+ if (!child)
+ return -EINVAL;
+
+ dw_dev->phy_async_sd.match.fwnode.fwnode = of_fwnode_handle(child);
+ dw_dev->phy_async_sd.match_type = V4L2_ASYNC_MATCH_FWNODE;
+
+ subdevs[0] = &dw_dev->phy_async_sd;
+ dw_dev->v4l2_notifier.num_subdevs = 1;
+ dw_dev->v4l2_notifier.subdevs = subdevs;
+ dw_dev->v4l2_notifier.ops = &dw_hdmi_notifier_ops;
+ return 0;
+}
+
+static int dw_hdmi_parse_notifier(struct dw_hdmi_dev *dw_dev)
+{
+#if IS_ENABLED(CONFIG_VIDEO_DWC_HDMI_RX_CEC)
+ struct device_node *notifier, *np = dw_dev->of_node;
+
+ /* Notifier device parsing */
+ notifier = of_parse_phandle(np, "edid-phandle", 0);
+ if (!notifier && dw_dev->dev->parent)
+ notifier = dw_dev->dev->parent->of_node;
+
+ if (!notifier) {
+ dev_err(dw_dev->dev, "missing edid-phandle in DT\n");
+ return -EINVAL;
+ }
+
+ dw_dev->notifier_pdev = of_find_device_by_node(notifier);
+ if (!dw_dev->notifier_pdev)
+ return -EPROBE_DEFER;
+
+ return 0;
+#else
+ return 0;
+#endif
+}
+
+static int dw_hdmi_parse_dt(struct dw_hdmi_dev *dw_dev)
+{
+ struct device_node *phy_node, *np = dw_dev->of_node;
+ u32 tmp;
+ int ret;
+
+ if (!np) {
+ dev_err(dw_dev->dev, "missing DT node\n");
+ return -EINVAL;
+ }
+
+ /* PHY properties parsing */
+ phy_node = dw_hdmi_get_phy_of_node(dw_dev, NULL);
+ of_property_read_u32(phy_node, "reg", &tmp);
+
+ dw_dev->phy_jtag_addr = tmp & 0xff;
+ if (!dw_dev->phy_jtag_addr) {
+ dev_err(dw_dev->dev, "missing phy jtag address in DT\n");
+ return -EINVAL;
+ }
+
+ /* Get config clock value */
+ dw_dev->clk = devm_clk_get(dw_dev->dev, "cfg");
+ if (IS_ERR(dw_dev->clk)) {
+ dev_err(dw_dev->dev, "failed to get cfg clock\n");
+ return PTR_ERR(dw_dev->clk);
+ }
+
+ ret = clk_prepare_enable(dw_dev->clk);
+ if (ret) {
+ dev_err(dw_dev->dev, "failed to enable cfg clock\n");
+ return ret;
+ }
+
+ dw_dev->cfg_clk = clk_get_rate(dw_dev->clk) / 1000000U;
+ if (!dw_dev->cfg_clk) {
+ dev_err(dw_dev->dev, "invalid cfg clock frequency\n");
+ ret = -EINVAL;
+ goto err_clk;
+ }
+
+ ret = dw_hdmi_parse_notifier(dw_dev);
+ if (ret)
+ goto err_clk;
+
+ return 0;
+
+err_clk:
+ clk_disable_unprepare(dw_dev->clk);
+ return ret;
+}
+
+static int dw_hdmi_rx_probe(struct platform_device *pdev)
+{
+ const struct v4l2_dv_timings timings_def = HDMI_DEFAULT_TIMING;
+ struct dw_hdmi_rx_pdata *pdata = pdev->dev.platform_data;
+ struct device *dev = &pdev->dev;
+ struct v4l2_ctrl_handler *hdl;
+ struct dw_hdmi_dev *dw_dev;
+ struct v4l2_subdev *sd;
+ struct resource *res;
+ int ret, irq;
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ dw_dev = devm_kzalloc(dev, sizeof(*dw_dev), GFP_KERNEL);
+ if (!dw_dev)
+ return -ENOMEM;
+
+ if (!pdata) {
+ dev_err(dev, "missing platform data\n");
+ return -EINVAL;
+ }
+
+ dw_dev->dev = dev;
+ dw_dev->config = pdata;
+ dw_dev->state = HDMI_STATE_NO_INIT;
+ dw_dev->of_node = dev->of_node;
+ spin_lock_init(&dw_dev->lock);
+
+ ret = dw_hdmi_parse_dt(dw_dev);
+ if (ret)
+ return ret;
+
+ /* Deferred work */
+ dw_dev->wq = create_singlethread_workqueue(DW_HDMI_RX_DRVNAME);
+ if (!dw_dev->wq) {
+ dev_err(dev, "failed to create workqueue\n");
+ return -ENOMEM;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ dw_dev->regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(dw_dev->regs)) {
+ dev_err(dev, "failed to remap resource\n");
+ ret = PTR_ERR(dw_dev->regs);
+ goto err_wq;
+ }
+
+ /* Disable HPD as soon as posssible */
+ dw_hdmi_disable_hpd(dw_dev);
+ /* Prevent HDCP from tampering video */
+ dw_hdmi_config_hdcp(dw_dev);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ ret = irq;
+ goto err_wq;
+ }
+
+ ret = devm_request_threaded_irq(dev, irq, NULL, dw_hdmi_irq_handler,
+ IRQF_ONESHOT, DW_HDMI_RX_DRVNAME, dw_dev);
+ if (ret)
+ goto err_wq;
+
+ /* V4L2 initialization */
+ sd = &dw_dev->sd;
+ v4l2_subdev_init(sd, &dw_hdmi_sd_ops);
+ strlcpy(sd->name, dev_name(dev), sizeof(sd->name));
+ sd->dev = dev;
+ sd->internal_ops = &dw_hdmi_internal_ops;
+ sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ /* Control handlers */
+ hdl = &dw_dev->hdl;
+ v4l2_ctrl_handler_init(hdl, 1);
+ dw_dev->detect_tx_5v_ctrl = v4l2_ctrl_new_std(hdl, NULL,
+ V4L2_CID_DV_RX_POWER_PRESENT, 0, BIT(4) - 1, 0, 0);
+
+ sd->ctrl_handler = hdl;
+ if (hdl->error) {
+ ret = hdl->error;
+ goto err_hdl;
+ }
+
+ /* Wait for ctrl handler register before requesting 5v interrupt */
+ irq = platform_get_irq(pdev, 1);
+ if (irq < 0) {
+ ret = irq;
+ goto err_hdl;
+ }
+
+ ret = devm_request_threaded_irq(dev, irq, dw_hdmi_5v_hard_irq_handler,
+ dw_hdmi_5v_irq_handler, IRQF_ONESHOT,
+ DW_HDMI_RX_DRVNAME "-5v-handler", dw_dev);
+ if (ret)
+ goto err_hdl;
+
+ /* Notifier for subdev binding */
+ ret = dw_hdmi_v4l2_init_notifier(dw_dev);
+ if (ret) {
+ dev_err(dev, "failed to init v4l2 notifier\n");
+ goto err_hdl;
+ }
+
+ /* PHY loading */
+ ret = dw_hdmi_phy_init(dw_dev);
+ if (ret)
+ goto err_hdl;
+
+ /* CEC */
+#if IS_ENABLED(CONFIG_VIDEO_DWC_HDMI_RX_CEC)
+ dw_dev->cec_adap = cec_allocate_adapter(&dw_hdmi_cec_adap_ops,
+ dw_dev, dev_name(dev), CEC_CAP_DEFAULTS,
+ HDMI_CEC_MAX_LOG_ADDRS);
+ ret = PTR_ERR_OR_ZERO(dw_dev->cec_adap);
+ if (ret) {
+ dev_err(dev, "failed to allocate CEC adapter\n");
+ goto err_cec;
+ }
+
+ dw_dev->cec_notifier = cec_notifier_get(&dw_dev->notifier_pdev->dev);
+ if (!dw_dev->cec_notifier) {
+ dev_err(dev, "failed to allocate CEC notifier\n");
+ ret = -ENOMEM;
+ goto err_cec;
+ }
+
+ dev_info(dev, "CEC is enabled\n");
+#else
+ dev_info(dev, "CEC is disabled\n");
+#endif
+
+ ret = v4l2_async_register_subdev(sd);
+ if (ret) {
+ dev_err(dev, "failed to register subdev\n");
+ goto err_cec;
+ }
+
+ ret = v4l2_async_subdev_notifier_register(sd, &dw_dev->v4l2_notifier);
+ if (ret) {
+ dev_err(dev, "failed to register notifier\n");
+ goto err_subdev;
+ }
+
+ /* Fill initial format settings */
+ dw_dev->timings = timings_def;
+ dw_dev->mbus_code = MEDIA_BUS_FMT_BGR888_1X24;
+
+ dev_set_drvdata(dev, sd);
+ dw_dev->state = HDMI_STATE_POWER_OFF;
+ dw_hdmi_detect_tx_5v(dw_dev);
+ dev_dbg(dev, "driver probed\n");
+ return 0;
+
+err_subdev:
+ v4l2_async_unregister_subdev(sd);
+err_cec:
+ cec_delete_adapter(dw_dev->cec_adap);
+ dw_hdmi_phy_exit(dw_dev);
+err_hdl:
+ v4l2_ctrl_handler_free(hdl);
+err_wq:
+ destroy_workqueue(dw_dev->wq);
+ return ret;
+}
+
+static int dw_hdmi_rx_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+ dw_hdmi_disable_ints(dw_dev);
+ dw_hdmi_disable_hpd(dw_dev);
+ dw_hdmi_disable_scdc(dw_dev);
+ dw_hdmi_power_off(dw_dev);
+ dw_hdmi_phy_s_power(dw_dev, false);
+ flush_workqueue(dw_dev->wq);
+ destroy_workqueue(dw_dev->wq);
+ dw_hdmi_phy_exit(dw_dev);
+ v4l2_async_notifier_unregister(&dw_dev->v4l2_notifier);
+ v4l2_async_unregister_subdev(sd);
+ v4l2_ctrl_handler_free(sd->ctrl_handler);
+ clk_disable_unprepare(dw_dev->clk);
+ dev_dbg(dev, "driver removed\n");
+ return 0;
+}
+
+static const struct of_device_id dw_hdmi_rx_id[] = {
+ { .compatible = "snps,dw-hdmi-rx" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, dw_hdmi_rx_id);
+
+static struct platform_driver dw_hdmi_rx_driver = {
+ .probe = dw_hdmi_rx_probe,
+ .remove = dw_hdmi_rx_remove,
+ .driver = {
+ .name = DW_HDMI_RX_DRVNAME,
+ .of_match_table = dw_hdmi_rx_id,
+ }
+};
+module_platform_driver(dw_hdmi_rx_driver);
new file mode 100644
@@ -0,0 +1,419 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+// Copyright (c) 2017 Synopsys, Inc. and/or its affiliates.
+// Synopsys DesignWare HDMI Receiver controller driver
+
+#ifndef __DW_HDMI_RX_H__
+#define __DW_HDMI_RX_H__
+
+#include <linux/bitops.h>
+
+/* id_hdmi Registers */
+#define HDMI_SETUP_CTRL 0x0000
+#define HDMI_PLL_LCK_STS 0x0030
+#define HDMI_CKM_EVLTM 0x0094
+#define HDMI_CKM_RESULT 0x009c
+#define HDMI_STS 0x00bc
+
+/* id_hdcp_1_4 Registers */
+#define HDMI_HDCP_CTRL 0x00c0
+#define HDMI_HDCP_SETTINGS 0x00c4
+#define HDMI_HDCP_SEED 0x00c8
+#define HDMI_HDCP_BKSV1 0x00cc
+#define HDMI_HDCP_BKSV0 0x00d0
+#define HDMI_HDCP_KIDX 0x00d4
+#define HDMI_HDCP_KEY1 0x00d8
+#define HDMI_HDCP_KEY0 0x00dc
+#define HDMI_HDCP_DBG 0x00e0
+#define HDMI_HDCP_AKSV1 0x00e4
+#define HDMI_HDCP_AKSV0 0x00e8
+#define HDMI_HDCP_AN1 0x00ec
+#define HDMI_HDCP_AN0 0x00f0
+#define HDMI_HDCP_EESS_WOO 0x00f4
+#define HDMI_HDCP_I2C_TIMEOUT 0x00f8
+#define HDMI_HDCP_STS 0x00fc
+
+/* id_mode_detection Registers */
+#define HDMI_MD_HT0 0x0148
+#define HDMI_MD_HT1 0x014c
+#define HDMI_MD_HACT_PX 0x0150
+#define HDMI_MD_VCTRL 0x0158
+#define HDMI_MD_VOL 0x0164
+#define HDMI_MD_VAL 0x0168
+#define HDMI_MD_VTL 0x0170
+#define HDMI_MD_STS 0x0180
+
+/* id_phy_configuration Registers */
+#define HDMI_PHY_CTRL 0x02c0
+#define HDMI_PHY_JTAG_CONF 0x02ec
+#define HDMI_PHY_JTAG_TAP_TCLK 0x02f0
+#define HDMI_PHY_JTAG_TAP_IN 0x02f4
+#define HDMI_PHY_JTAG_TAP_OUT 0x02f8
+#define HDMI_PHY_JTAG_ADDR 0x02fc
+
+/* id_packet_decoder Registers */
+#define HDMI_PDEC_STS 0x0360
+#define HDMI_PDEC_VSI_PAYLOAD0 0x0368
+#define HDMI_PDEC_AVI_PB 0x03a4
+
+/* id_hdmi_2_0 Registers */
+#define HDMI_SCDC_CONFIG 0x0808
+#define HDMI_HDCP22_CONTROL 0x081c
+#define HDMI_HDCP22_STATUS 0x08fc
+
+/* id_audio_and_cec_interrupt Registers */
+#define HDMI_AUD_CEC_IEN_CLR 0x0f90
+#define HDMI_AUD_CEC_IEN_SET 0x0f94
+#define HDMI_AUD_CEC_ISTS 0x0f98
+#define HDMI_AUD_CEC_IEN 0x0f9c
+#define HDMI_AUD_CEC_ICLR 0x0fa0
+#define HDMI_AUD_CEC_ISET 0x0fa4
+
+/* id_mode_detection_interrupt Registers */
+#define HDMI_MD_IEN_CLR 0x0fc0
+#define HDMI_MD_IEN_SET 0x0fc4
+#define HDMI_MD_ISTS 0x0fc8
+#define HDMI_MD_IEN 0x0fcc
+#define HDMI_MD_ICLR 0x0fd0
+#define HDMI_MD_ISET 0x0fd4
+
+/* id_hdmi_interrupt Registers */
+#define HDMI_IEN_CLR 0x0fd8
+#define HDMI_IEN_SET 0x0fdc
+#define HDMI_ISTS 0x0fe0
+#define HDMI_IEN 0x0fe4
+#define HDMI_ICLR 0x0fe8
+#define HDMI_ISET 0x0fec
+
+/* id_dmi Registers */
+#define HDMI_DMI_SW_RST 0x0ff0
+
+/* id_cec Registers */
+#define HDMI_CEC_CTRL 0x1f00
+#define HDMI_CEC_MASK 0x1f08
+#define HDMI_CEC_ADDR_L 0x1f14
+#define HDMI_CEC_ADDR_H 0x1f18
+#define HDMI_CEC_TX_CNT 0x1f1c
+#define HDMI_CEC_RX_CNT 0x1f20
+#define HDMI_CEC_TX_DATA(i) (0x1f40 + ((i) * 4))
+#define HDMI_CEC_TX_DATA_MAX 16
+#define HDMI_CEC_RX_DATA(i) (0x1f80 + ((i) * 4))
+#define HDMI_CEC_RX_DATA_MAX 16
+#define HDMI_CEC_LOCK 0x1fc0
+#define HDMI_CEC_WAKEUPCTRL 0x1fc4
+
+/* id_cbus Registers */
+#define HDMI_CBUSIOCTRL 0x3020
+
+enum {
+ /* SETUP_CTRL field values */
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_MASK = GENMASK(27,24),
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_OFFSET = 24,
+ HDMI_SETUP_CTRL_HDMIBUS_RESET_OVR_EN_MASK = BIT(21),
+ HDMI_SETUP_CTRL_HDMIBUS_RESET_OVR_EN_OFFSET = 21,
+ HDMI_SETUP_CTRL_BUS_RESET_OVR_MASK = BIT(20),
+ HDMI_SETUP_CTRL_BUS_RESET_OVR_OFFSET = 20,
+ HDMI_SETUP_CTRL_HDMI_RESET_OVR_MASK = BIT(19),
+ HDMI_SETUP_CTRL_HDMI_RESET_OVR_OFFSET = 19,
+ HDMI_SETUP_CTRL_PON_RESET_OVR_MASK = BIT(18),
+ HDMI_SETUP_CTRL_PON_RESET_OVR_OFFSET = 18,
+ HDMI_SETUP_CTRL_RESET_OVR_MASK = BIT(17),
+ HDMI_SETUP_CTRL_RESET_OVR_OFFSET = 17,
+ HDMI_SETUP_CTRL_RESET_OVR_EN_MASK = BIT(16),
+ HDMI_SETUP_CTRL_RESET_OVR_EN_OFFSET = 16,
+ HDMI_SETUP_CTRL_EQ_OSM_OVR_MASK = BIT(15),
+ HDMI_SETUP_CTRL_EQ_OSM_OVR_OFFSET = 15,
+ HDMI_SETUP_CTRL_EQ_OSM_OVR_EN_MASK = BIT(14),
+ HDMI_SETUP_CTRL_EQ_OSM_OVR_EN_OFFSET = 14,
+ HDMI_SETUP_CTRL_NOWAIT_ACTIVITY_MASK = BIT(13),
+ HDMI_SETUP_CTRL_NOWAIT_ACTIVITY_OFFSET = 13,
+ HDMI_SETUP_CTRL_EQ_CAL_TIME_MASK = GENMASK(12,7),
+ HDMI_SETUP_CTRL_EQ_CAL_TIME_OFFSET = 7,
+ HDMI_SETUP_CTRL_USE_PLL_LOCK_MASK = BIT(6),
+ HDMI_SETUP_CTRL_USE_PLL_LOCK_OFFSET = 6,
+ HDMI_SETUP_CTRL_FORCE_STATE_MASK = BIT(5),
+ HDMI_SETUP_CTRL_FORCE_STATE_OFFSET = 5,
+ HDMI_SETUP_CTRL_TARGET_STATE_MASK = GENMASK(4,1),
+ HDMI_SETUP_CTRL_TARGET_STATE_OFFSET = 1,
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_MASK = BIT(0),
+ HDMI_SETUP_CTRL_HOT_PLUG_DETECT_OFFSET = 0,
+ /* PLL_LCK_STS field values */
+ HDMI_PLL_LCK_STS_PLL_LOCKED = BIT(0),
+ /* CKM_EVLTM field values */
+ HDMI_CKM_EVLTM_LOCK_HYST_MASK = GENMASK(21,20),
+ HDMI_CKM_EVLTM_LOCK_HYST_OFFSET = 20,
+ HDMI_CKM_EVLTM_CLK_HYST_MASK = GENMASK(18,16),
+ HDMI_CKM_EVLTM_CLK_HYST_OFFSET = 16,
+ HDMI_CKM_EVLTM_EVAL_TIME_MASK = GENMASK(15,4),
+ HDMI_CKM_EVLTM_EVAL_TIME_OFFSET = 4,
+ HDMI_CKM_EVLTM_CLK_MEAS_INPUT_SRC_MASK = BIT(0),
+ HDMI_CKM_EVLTM_CLK_MEAS_INPUT_SRC_OFFSET = 0,
+ /* CKM_RESULT field values */
+ HDMI_CKM_RESULT_CLOCK_IN_RANGE = BIT(17),
+ HDMI_CKM_RESULT_FREQ_LOCKED = BIT(16),
+ HDMI_CKM_RESULT_CLKRATE_MASK = GENMASK(15,0),
+ HDMI_CKM_RESULT_CLKRATE_OFFSET = 0,
+ /* STS field values */
+ HDMI_STS_DCM_CURRENT_MODE_MASK = GENMASK(31,28),
+ HDMI_STS_DCM_CURRENT_MODE_OFFSET = 28,
+ HDMI_STS_DCM_LAST_PIXEL_PHASE_STS_MASK = GENMASK(27,24),
+ HDMI_STS_DCM_LAST_PIXEL_PHASE_STS_OFFSET = 24,
+ HDMI_STS_DCM_PHASE_DIFF_CNT_MASK = GENMASK(23,16),
+ HDMI_STS_DCM_PH_DIFF_CNT_OVERFL = BIT(15),
+ HDMI_STS_DCM_GCP_ZERO_FIELDS_PASS = BIT(14),
+ HDMI_STS_CTL3_STS = BIT(13),
+ HDMI_STS_CTL2_STS = BIT(12),
+ HDMI_STS_CTL1_STS = BIT(11),
+ HDMI_STS_CTL0_STS = BIT(10),
+ HDMI_STS_VS_POL_ADJ_STS = BIT(9),
+ HDMI_STS_HS_POL_ADJ_STS = BIT(8),
+ HDMI_STS_RES_OVERLOAD_STS = BIT(7),
+ HDMI_STS_DCM_CURRENT_PP_MASK = GENMASK(3,0),
+ HDMI_STS_DCM_CURRENT_PP_OFFSET = 0,
+ /* HDCP_CTRL field values */
+ HDMI_HDCP_CTRL_ENDISLOCK_MASK = BIT(25),
+ HDMI_HDCP_CTRL_ENDISLOCK_OFFSET = 25,
+ HDMI_HDCP_CTRL_ENABLE_MASK = BIT(24),
+ HDMI_HDCP_CTRL_ENABLE_OFFSET = 24,
+ HDMI_HDCP_CTRL_FREEZE_HDCP_FSM_MASK = BIT(21),
+ HDMI_HDCP_CTRL_FREEZE_HDCP_FSM_OFFSET = 21,
+ HDMI_HDCP_CTRL_FREEZE_HDCP_STATE_MASK = GENMASK(20,15),
+ HDMI_HDCP_CTRL_FREEZE_HDCP_STATE_OFFSET = 15,
+ HDMI_HDCP_CTRL_VID_DE_MASK = BIT(14),
+ HDMI_HDCP_CTRL_VID_DE_OFFSET = 14,
+ HDMI_HDCP_CTRL_SEL_AVMUTE_MASK = GENMASK(11,10),
+ HDMI_HDCP_CTRL_SEL_AVMUTE_OFFSET = 10,
+ HDMI_HDCP_CTRL_CTL_MASK = GENMASK(9,8),
+ HDMI_HDCP_CTRL_CTL_OFFSET = 8,
+ HDMI_HDCP_CTRL_RI_RATE_MASK = GENMASK(7,6),
+ HDMI_HDCP_CTRL_RI_RATE_OFFSET = 6,
+ HDMI_HDCP_CTRL_HDMI_MODE_ENABLE_MASK = BIT(2),
+ HDMI_HDCP_CTRL_HDMI_MODE_ENABLE_OFFSET = 2,
+ HDMI_HDCP_CTRL_KEY_DECRYPT_ENABLE_MASK = BIT(1),
+ HDMI_HDCP_CTRL_KEY_DECRYPT_ENABLE_OFFSET = 1,
+ HDMI_HDCP_CTRL_ENC_EN_MASK = BIT(0),
+ HDMI_HDCP_CTRL_ENC_EN_OFFSET = 0,
+ /* HDCP_SEED field values */
+ HDMI_HDCP_SEED_KEY_DECRYPT_SEED_MASK = GENMASK(15,0),
+ HDMI_HDCP_SEED_KEY_DECRYPT_SEED_OFFSET = 0,
+ /* HDCP_STS field values */
+ HDMI_HDCP_STS_ENC_STATE = BIT(9),
+ HDMI_HDCP_STS_AUTH_START = BIT(8),
+ HDMI_HDCP_STS_KEY_WR_OK = BIT(0),
+ /* MD_HT0 field values */
+ HDMI_MD_HT0_HTOT32_CLK_MASK = GENMASK(31,16),
+ HDMI_MD_HT0_HTOT32_CLK_OFFSET = 16,
+ HDMI_MD_HT0_HS_CLK_MASK = GENMASK(15,0),
+ HDMI_MD_HT0_HS_CLK_OFFSET = 0,
+ /* MD_HT1 field values */
+ HDMI_MD_HT1_HTOT_PIX_MASK = GENMASK(31,16),
+ HDMI_MD_HT1_HTOT_PIX_OFFSET = 16,
+ HDMI_MD_HT1_HOFS_PIX_MASK = GENMASK(15,0),
+ HDMI_MD_HT1_HOFS_PIX_OFFSET = 0,
+ /* MD_VCTRL field values */
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_MASK = BIT(4),
+ HDMI_MD_VCTRL_V_OFFS_LIN_MODE_OFFSET = 4,
+ HDMI_MD_VCTRL_V_EDGE_MASK = BIT(1),
+ HDMI_MD_VCTRL_V_EDGE_OFFSET = 1,
+ HDMI_MD_VCTRL_V_MODE_MASK = BIT(0),
+ HDMI_MD_VCTRL_V_MODE_OFFSET = 0,
+ /* MD_STS field values */
+ HDMI_MD_STS_ILACE = BIT(3),
+ HDMI_MD_STS_DE_ACTIVITY = BIT(2),
+ HDMI_MD_STS_VS_ACT = BIT(1),
+ HDMI_MD_STS_HS_ACT = BIT(0),
+ /* PHY_CTRL field values */
+ HDMI_PHY_CTRL_SVSRETMODEZ_MASK = BIT(6),
+ HDMI_PHY_CTRL_SVSRETMODEZ_OFFSET = 6,
+ HDMI_PHY_CTRL_CFGCLKFREQ_MASK = GENMASK(5,4),
+ HDMI_PHY_CTRL_CFGCLKFREQ_OFFSET = 4,
+ HDMI_PHY_CTRL_PORTSELECT_MASK = GENMASK(3,2),
+ HDMI_PHY_CTRL_PORTSELECT_OFFSET = 2,
+ HDMI_PHY_CTRL_PDDQ_MASK = BIT(1),
+ HDMI_PHY_CTRL_PDDQ_OFFSET = 1,
+ HDMI_PHY_CTRL_RESET_MASK = BIT(0),
+ HDMI_PHY_CTRL_RESET_OFFSET = 0,
+ /* PHY_JTAG_TAP_IN field values */
+ HDMI_PHY_JTAG_TAP_IN_TMS = BIT(4),
+ HDMI_PHY_JTAG_TAP_IN_TDI = BIT(0),
+ /* PDEC_STS field values */
+ HDMI_PDEC_STS_DRM_CKS_CHG = BIT(31),
+ HDMI_PDEC_STS_DRM_RCV = BIT(30),
+ HDMI_PDEC_STS_NTSCVBI_CKS_CHG = BIT(29),
+ HDMI_PDEC_STS_DVIDET = BIT(28),
+ HDMI_PDEC_STS_VSI_CKS_CHG = BIT(27),
+ HDMI_PDEC_STS_GMD_CKS_CHG = BIT(26),
+ HDMI_PDEC_STS_AIF_CKS_CHG = BIT(25),
+ HDMI_PDEC_STS_AVI_CKS_CHG = BIT(24),
+ HDMI_PDEC_STS_ACR_N_CHG = BIT(23),
+ HDMI_PDEC_STS_ACR_CTS_CHG = BIT(22),
+ HDMI_PDEC_STS_GCP_AV_MUTE_CHG = BIT(21),
+ HDMI_PDEC_STS_GMD_RCV = BIT(20),
+ HDMI_PDEC_STS_AIF_RCV = BIT(19),
+ HDMI_PDEC_STS_AVI_RCV = BIT(18),
+ HDMI_PDEC_STS_ACR_RCV = BIT(17),
+ HDMI_PDEC_STS_GCP_RCV = BIT(16),
+ HDMI_PDEC_STS_VSI_RCV = BIT(15),
+ HDMI_PDEC_STS_AMP_RCV = BIT(14),
+ HDMI_PDEC_STS_NTSCVBI_RCV = BIT(13),
+ HDMI_PDEC_STS_OBA_LAYOUT = BIT(12),
+ HDMI_PDEC_STS_AUDS_LAYOUT = BIT(11),
+ HDMI_PDEC_STS_PD_FIFO_NEW_ENTRY = BIT(8),
+ HDMI_PDEC_STS_PD_FIFO_OVERFL = BIT(4),
+ HDMI_PDEC_STS_PD_FIFO_UNDERFL = BIT(3),
+ HDMI_PDEC_STS_PD_FIFO_TH_START_PASS = BIT(2),
+ HDMI_PDEC_STS_PD_FIFO_TH_MAX_PASS = BIT(1),
+ HDMI_PDEC_STS_PD_FIFO_TH_MIN_PASS = BIT(0),
+ /* PDEC_VSI_PAYLOAD0 field values */
+ HDMI_PDEC_VSI_PAYLOAD0_HDMI_VIC_MASK = GENMASK(15,8),
+ HDMI_PDEC_VSI_PAYLOAD0_HDMI_VIC_OFFSET = 8,
+ /* PDEC_AVI_PB field values */
+ HDMI_PDEC_AVI_PB_VID_IDENT_CODE_MASK = GENMASK(31,24),
+ HDMI_PDEC_AVI_PB_VID_IDENT_CODE_OFFSET = 24,
+ HDMI_PDEC_AVI_PB_IT_CONTENT = BIT(23),
+ HDMI_PDEC_AVI_PB_EXT_COLORIMETRY_MASK = GENMASK(22,20),
+ HDMI_PDEC_AVI_PB_EXT_COLORIMETRY_OFFSET = 20,
+ HDMI_PDEC_AVI_PB_RGB_QUANT_RANGE_MASK = GENMASK(19,18),
+ HDMI_PDEC_AVI_PB_RGB_QUANT_RANGE_OFFSET = 18,
+ HDMI_PDEC_AVI_PB_NON_UNIF_SCALE_MASK = GENMASK(17,16),
+ HDMI_PDEC_AVI_PB_NON_UNIF_SCALE_OFFSET = 16,
+ HDMI_PDEC_AVI_PB_COLORIMETRY_MASK = GENMASK(15,14),
+ HDMI_PDEC_AVI_PB_COLORIMETRY_OFFSET = 14,
+ HDMI_PDEC_AVI_PB_PIC_ASPECT_RAT_MASK = GENMASK(13,12),
+ HDMI_PDEC_AVI_PB_PIC_ASPECT_RAT_OFFSET = 12,
+ HDMI_PDEC_AVI_PB_ACT_ASPECT_RAT_MASK = GENMASK(11,8),
+ HDMI_PDEC_AVI_PB_ACT_ASPECT_RAT_OFFSET = 8,
+ HDMI_PDEC_AVI_PB_VIDEO_FORMAT_MASK = GENMASK(7,5),
+ HDMI_PDEC_AVI_PB_VIDEO_FORMAT_OFFSET = 5,
+ HDMI_PDEC_AVI_PB_ACT_INFO_PRESENT = BIT(4),
+ HDMI_PDEC_AVI_PB_BAR_INFO_VALID_MASK = GENMASK(3,2),
+ HDMI_PDEC_AVI_PB_BAR_INFO_VALID_OFFSET = 2,
+ HDMI_PDEC_AVI_PB_SCAN_INFO_MASK = GENMASK(1,0),
+ HDMI_PDEC_AVI_PB_SCAN_INFO_OFFSET = 0,
+ /* SCDC_CONFIG field values */
+ HDMI_SCDC_CONFIG_HPDLOW_MASK = BIT(1),
+ HDMI_SCDC_CONFIG_HPDLOW_OFFSET = 1,
+ HDMI_SCDC_CONFIG_POWERPROVIDED_MASK = BIT(0),
+ HDMI_SCDC_CONFIG_POWERPROVIDED_OFFSET = 0,
+ /* HDCP22_CONTROL field values */
+ HDMI_HDCP22_CONTROL_CD_OVR_VAL_MASK = GENMASK(23,20),
+ HDMI_HDCP22_CONTROL_CD_OVR_VAL_OFFSET = 20,
+ HDMI_HDCP22_CONTROL_CD_OVR_EN_MASK = BIT(16),
+ HDMI_HDCP22_CONTROL_CD_OVR_EN_OFFSET = 16,
+ HDMI_HDCP22_CONTROL_HPD_MASK = BIT(12),
+ HDMI_HDCP22_CONTROL_HPD_OFFSET = 12,
+ HDMI_HDCP22_CONTROL_PKT_ERR_OVR_VAL_MASK = BIT(9),
+ HDMI_HDCP22_CONTROL_PKT_ERR_OVR_VAL_OFFSET= 9,
+ HDMI_HDCP22_CONTROL_PKT_ERR_OVR_EN_MASK = BIT(8),
+ HDMI_HDCP22_CONTROL_PKT_ERR_OVR_EN_OFFSET = 8,
+ HDMI_HDCP22_CONTROL_AVMUTE_OVR_VAL_MASK = BIT(5),
+ HDMI_HDCP22_CONTROL_AVMUTE_OVR_VAL_OFFSET = 5,
+ HDMI_HDCP22_CONTROL_AVMUTE_OVR_EN_MASK = BIT(4),
+ HDMI_HDCP22_CONTROL_AVMUTE_OVR_EN_OFFSET = 4,
+ HDMI_HDCP22_CONTROL_OVR_VAL_MASK = BIT(2),
+ HDMI_HDCP22_CONTROL_OVR_VAL_OFFSET = 2,
+ HDMI_HDCP22_CONTROL_OVR_EN_MASK = BIT(1),
+ HDMI_HDCP22_CONTROL_OVR_EN_OFFSET = 1,
+ HDMI_HDCP22_CONTROL_SWITCH_LCK_MASK = BIT(0),
+ HDMI_HDCP22_CONTROL_SWITCH_LCK_OFFSET = 0,
+ /* AUD_CEC_ISTS field values */
+ HDMI_AUD_CEC_ISTS_WAKEUPCTRL = BIT(22),
+ HDMI_AUD_CEC_ISTS_ERROR_FOLL = BIT(21),
+ HDMI_AUD_CEC_ISTS_ERROR_INIT = BIT(20),
+ HDMI_AUD_CEC_ISTS_ARBLST = BIT(19),
+ HDMI_AUD_CEC_ISTS_NACK = BIT(18),
+ HDMI_AUD_CEC_ISTS_EOM = BIT(17),
+ HDMI_AUD_CEC_ISTS_DONE = BIT(16),
+ HDMI_AUD_CEC_ISTS_SCK_STABLE = BIT(1),
+ HDMI_AUD_CEC_ISTS_CTSN_CNT = BIT(0),
+ /* MD_ISTS field values */
+ HDMI_MD_ISTS_VOFS_LIN = BIT(11),
+ HDMI_MD_ISTS_VTOT_LIN = BIT(10),
+ HDMI_MD_ISTS_VACT_LIN = BIT(9),
+ HDMI_MD_ISTS_VS_CLK = BIT(8),
+ HDMI_MD_ISTS_VTOT_CLK = BIT(7),
+ HDMI_MD_ISTS_HACT_PIX = BIT(6),
+ HDMI_MD_ISTS_HS_CLK = BIT(5),
+ HDMI_MD_ISTS_HTOT32_CLK = BIT(4),
+ HDMI_MD_ISTS_ILACE = BIT(3),
+ HDMI_MD_ISTS_DE_ACTIVITY = BIT(2),
+ HDMI_MD_ISTS_VS_ACT = BIT(1),
+ HDMI_MD_ISTS_HS_ACT = BIT(0),
+ /* ISTS field values */
+ HDMI_ISTS_I2CMP_ARBLOST = BIT(30),
+ HDMI_ISTS_I2CMPNACK = BIT(29),
+ HDMI_ISTS_I2CMPDONE = BIT(28),
+ HDMI_ISTS_VS_THR_REACHED = BIT(27),
+ HDMI_ISTS_VSYNC_ACT_EDGE = BIT(26),
+ HDMI_ISTS_AKSV_RCV = BIT(25),
+ HDMI_ISTS_PLL_CLOCK_GATED = BIT(24),
+ HDMI_ISTS_DESER_MISAL = BIT(23),
+ HDMI_ISTS_CDSENSE_CHG = BIT(22),
+ HDMI_ISTS_CEAVID_EMPTY = BIT(21),
+ HDMI_ISTS_CEAVID_FULL = BIT(20),
+ HDMI_ISTS_SCDCTMDSCFGCHANGE = BIT(19),
+ HDMI_ISTS_SCDCSCSTATUSCHANGE = BIT(18),
+ HDMI_ISTS_SCDCCFGCHANGE = BIT(17),
+ HDMI_ISTS_DCM_CURRENT_MODE_CHG = BIT(16),
+ HDMI_ISTS_DCM_PH_DIFF_CNT_OVERFL = BIT(15),
+ HDMI_ISTS_DCM_GCP_ZERO_FIELDS_PASS = BIT(14),
+ HDMI_ISTS_CTL3_CHANGE = BIT(13),
+ HDMI_ISTS_CTL2_CHANGE = BIT(12),
+ HDMI_ISTS_CTL1_CHANGE = BIT(11),
+ HDMI_ISTS_CTL0_CHANGE = BIT(10),
+ HDMI_ISTS_VS_POL_ADJ = BIT(9),
+ HDMI_ISTS_HS_POL_ADJ = BIT(8),
+ HDMI_ISTS_RES_OVERLOAD = BIT(7),
+ HDMI_ISTS_CLK_CHANGE = BIT(6),
+ HDMI_ISTS_PLL_LCK_CHG = BIT(5),
+ HDMI_ISTS_EQGAIN_DONE = BIT(4),
+ HDMI_ISTS_OFFSCAL_DONE = BIT(3),
+ HDMI_ISTS_RESCAL_DONE = BIT(2),
+ HDMI_ISTS_ACT_CHANGE = BIT(1),
+ HDMI_ISTS_STATE_REACHED = BIT(0),
+ /* DMI_SW_RST field values */
+ HDMI_DMI_SW_RST_TMDS = BIT(16),
+ HDMI_DMI_SW_RST_HDCP = BIT(8),
+ HDMI_DMI_SW_RST_VID = BIT(7),
+ HDMI_DMI_SW_RST_PIXEL = BIT(6),
+ HDMI_DMI_SW_RST_CEC = BIT(5),
+ HDMI_DMI_SW_RST_AUD = BIT(4),
+ HDMI_DMI_SW_RST_BUS = BIT(3),
+ HDMI_DMI_SW_RST_HDMI = BIT(2),
+ HDMI_DMI_SW_RST_MODET = BIT(1),
+ HDMI_DMI_SW_RST_MAIN = BIT(0),
+ /* CEC_CTRL field values */
+ HDMI_CEC_CTRL_STANDBY_MASK = BIT(4),
+ HDMI_CEC_CTRL_STANDBY_OFFSET = 4,
+ HDMI_CEC_CTRL_BC_NACK_MASK = BIT(3),
+ HDMI_CEC_CTRL_BC_NACK_OFFSET = 3,
+ HDMI_CEC_CTRL_FRAME_TYP_MASK = GENMASK(2,1),
+ HDMI_CEC_CTRL_FRAME_TYP_OFFSET = 1,
+ HDMI_CEC_CTRL_SEND_MASK = BIT(0),
+ HDMI_CEC_CTRL_SEND_OFFSET = 0,
+ /* CEC_MASK field values */
+ HDMI_CEC_MASK_WAKEUP_MASK = BIT(6),
+ HDMI_CEC_MASK_WAKEUP_OFFSET = 6,
+ HDMI_CEC_MASK_ERROR_FLOW_MASK = BIT(5),
+ HDMI_CEC_MASK_ERROR_FLOW_OFFSET = 5,
+ HDMI_CEC_MASK_ERROR_INITITATOR_MASK = BIT(4),
+ HDMI_CEC_MASK_ERROR_INITITATOR_OFFSET = 4,
+ HDMI_CEC_MASK_ARB_LOST_MASK = BIT(3),
+ HDMI_CEC_MASK_ARB_LOST_OFFSET = 3,
+ HDMI_CEC_MASK_NACK_MASK = BIT(2),
+ HDMI_CEC_MASK_NACK_OFFSET = 2,
+ HDMI_CEC_MASK_EOM_MASK = BIT(1),
+ HDMI_CEC_MASK_EOM_OFFSET = 1,
+ HDMI_CEC_MASK_DONE_MASK = BIT(0),
+ HDMI_CEC_MASK_DONE_OFFSET = 0,
+ /* CBUSIOCTRL field values */
+ HDMI_CBUSIOCTRL_DATAPATH_CBUSZ_MASK = BIT(24),
+ HDMI_CBUSIOCTRL_DATAPATH_CBUSZ_OFFSET = 24,
+ HDMI_CBUSIOCTRL_SVSRETMODEZ_MASK = BIT(16),
+ HDMI_CBUSIOCTRL_SVSRETMODEZ_OFFSET = 16,
+ HDMI_CBUSIOCTRL_PDDQ_MASK = BIT(8),
+ HDMI_CBUSIOCTRL_PDDQ_OFFSET = 8,
+ HDMI_CBUSIOCTRL_RESET_MASK = BIT(0),
+ HDMI_CBUSIOCTRL_RESET_OFFSET = 0,
+};
+
+#endif /* __DW_HDMI_RX_H__ */
new file mode 100644
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+// Copyright (c) 2017 Synopsys, Inc. and/or its affiliates.
+// Synopsys DesignWare HDMI Receiver controller platform data
+
+#ifndef __DW_HDMI_RX_PDATA_H__
+#define __DW_HDMI_RX_PDATA_H__
+
+#define DW_HDMI_RX_DRVNAME "dw-hdmi-rx"
+
+/* Notify events */
+#define DW_HDMI_NOTIFY_IS_OFF 1
+#define DW_HDMI_NOTIFY_INPUT_CHANGED 2
+#define DW_HDMI_NOTIFY_AUDIO_CHANGED 3
+#define DW_HDMI_NOTIFY_IS_STABLE 4
+
+/**
+ * struct dw_hdmi_rx_pdata - Platform Data configuration for HDMI receiver.
+ *
+ * @dw_5v_status: 5v status callback. Shall return the status of the given
+ * input, i.e. shall be true if a cable is connected to the specified input.
+ *
+ * @dw_5v_clear: 5v clear callback. Shall clear the interrupt associated with
+ * the 5v sense controller.
+ *
+ * @dw_5v_arg: Argument to be used with the 5v sense callbacks.
+ *
+ * @dw_zcal_reset: Impedance calibration reset callback. Shall be called when
+ * the impedance calibration needs to be restarted. This is used by phy driver
+ * only.
+ *
+ * @dw_zcal_done: Impedance calibration status callback. Shall return true if
+ * the impedance calibration procedure has ended. This is used by phy driver
+ * only.
+ *
+ * @dw_zcal_arg: Argument to be used with the ZCAL calibration callbacks.
+ */
+struct dw_hdmi_rx_pdata {
+ /* 5V sense interface */
+ bool (*dw_5v_status)(void __iomem *regs, int input);
+ void (*dw_5v_clear)(void __iomem *regs);
+ void __iomem *dw_5v_arg;
+ /* Zcal interface */
+ void (*dw_zcal_reset)(void __iomem *regs);
+ bool (*dw_zcal_done)(void __iomem *regs);
+ void __iomem *dw_zcal_arg;
+};
+
+#endif /* __DW_HDMI_RX_PDATA_H__ */
This is an initial submission for the Synopsys DesignWare HDMI RX Controller Driver. This driver interacts with a phy driver so that a communication between them is created and a video pipeline is configured. The controller + phy pipeline can then be integrated into a fully featured system that can be able to receive video up to 4k@60Hz with deep color 48bit RGB, depending on the platform. Although, this initial version does not yet handle deep color modes. This driver was implemented as a standard V4L2 subdevice and its main features are: - Internal state machine that reconfigures phy until the video is not stable - JTAG communication with phy - Inter-module communication with phy driver - Debug write/read ioctls Some notes: - RX sense controller (cable connection/disconnection) must be handled by the platform wrapper as this is not integrated into the controller RTL - The same goes for EDID ROM's - ZCAL calibration is needed only in FPGA platforms, in ASIC this is not needed - The state machine is not an ideal solution as it creates a kthread but it is needed because some sources might not be very stable at sending the video (i.e. we must react accordingly). Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: Joao Pinto <jpinto@synopsys.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Hans Verkuil <hans.verkuil@cisco.com> Cc: Sylwester Nawrocki <snawrocki@kernel.org> Cc: Sakari Ailus <sakari.ailus@iki.fi> Cc: Philippe Ombredanne <pombredanne@nexb.com> --- Changes from v9: - Use SPDX License ID (Philippe) - Use LOW_DRIVE CEC error (Hans) - Fill bt->il_* fields (Hans) - Fix format->field to NONE (Hans) - Drop a left-over comment (Hans) - Use CEC_CAP_DEFAULTS (Hans) Changes from v8: - Incorporate Sakari's work on ASYNC subdevs Changes from v6: - edid-phandle now also looks for parent node (Sylwester) - Fix kbuild build warnings Changes from v5: - Removed HDCP 1.4 support (Hans) - Removed some CEC debug messages (Hans) - Add s_dv_timings callback (Hans) - Add V4L2_CID_DV_RX_POWER_PRESENT ctrl (Hans) Changes from v4: - Add flag V4L2_SUBDEV_FL_HAS_DEVNODE (Sylwester) - Remove some comments and change some messages to dev_dbg (Sylwester) - Use v4l2_async_subnotifier_register() (Sylwester) Changes from v3: - Use v4l2 async API (Sylwester) - Do not block waiting for phy - Do not use busy waiting delays (Sylwester) - Simplify dw_hdmi_power_on (Sylwester) - Use clock API (Sylwester) - Use compatible string (Sylwester) - Minor fixes (Sylwester) Changes from v2: - Address review comments from Hans regarding CEC - Use CEC notifier - Enable SCDC Changes from v1: - Add support for CEC - Correct typo errors - Correctly detect interlaced video modes - Correct VIC parsing Changes from RFC: - Add support for HDCP 1.4 - Fixup HDMI_VIC not being parsed (Hans) - Send source change signal when powering off (Hans) - Add a "wait stable delay" - Detect interlaced video modes (Hans) - Restrain g/s_register from reading/writing to HDCP regs (Hans) --- drivers/media/platform/dwc/Kconfig | 15 + drivers/media/platform/dwc/Makefile | 1 + drivers/media/platform/dwc/dw-hdmi-rx.c | 1840 +++++++++++++++++++++++++++++++ drivers/media/platform/dwc/dw-hdmi-rx.h | 419 +++++++ include/media/dwc/dw-hdmi-rx-pdata.h | 48 + 5 files changed, 2323 insertions(+) create mode 100644 drivers/media/platform/dwc/dw-hdmi-rx.c create mode 100644 drivers/media/platform/dwc/dw-hdmi-rx.h create mode 100644 include/media/dwc/dw-hdmi-rx-pdata.h