diff options
Diffstat (limited to 'drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c')
| -rw-r--r-- | drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c | 2746 |
1 files changed, 2746 insertions, 0 deletions
diff --git a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c new file mode 100644 index 000000000000..3d2913de9a86 --- /dev/null +++ b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c @@ -0,0 +1,2746 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2025 Collabora, Ltd. + * Author: Shreeya Patel <shreeya.patel@collabora.com> + * Author: Dmitry Osipenko <dmitry.osipenko@collabora.com> + * + * Copyright (c) 2021 Rockchip Electronics Co. Ltd. + * Author: Dingxian Wen <shawn.wen@rock-chips.com> + */ + +#include <linux/clk.h> +#include <linux/completion.h> +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/gpio/consumer.h> +#include <linux/hdmi.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/mfd/syscon.h> +#include <linux/math64.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/of_reserved_mem.h> +#include <linux/pinctrl/consumer.h> +#include <linux/platform_device.h> +#include <linux/property.h> +#include <linux/regmap.h> +#include <linux/reset.h> +#include <linux/v4l2-dv-timings.h> +#include <linux/workqueue.h> + +#include <media/cec.h> +#include <media/v4l2-common.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-fh.h> +#include <media/v4l2-ioctl.h> +#include <media/videobuf2-dma-contig.h> +#include <media/videobuf2-v4l2.h> + +#include "snps_hdmirx.h" +#include "snps_hdmirx_cec.h" + +#define EDID_NUM_BLOCKS_MAX 4 +#define EDID_BLOCK_SIZE 128 +#define HDMIRX_PLANE_Y 0 +#define HDMIRX_PLANE_CBCR 1 +#define FILTER_FRAME_CNT 6 + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "debug level (0-3)"); + +enum hdmirx_pix_fmt { + HDMIRX_RGB888 = 0, + HDMIRX_YUV422 = 1, + HDMIRX_YUV444 = 2, + HDMIRX_YUV420 = 3, +}; + +enum ddr_store_fmt { + STORE_RGB888 = 0, + STORE_RGBA_ARGB, + STORE_YUV420_8BIT, + STORE_YUV420_10BIT, + STORE_YUV422_8BIT, + STORE_YUV422_10BIT, + STORE_YUV444_8BIT, + STORE_YUV420_16BIT = 8, + STORE_YUV422_16BIT = 9, +}; + +enum hdmirx_reg_attr { + HDMIRX_ATTR_RW = 0, + HDMIRX_ATTR_RO = 1, + HDMIRX_ATTR_WO = 2, + HDMIRX_ATTR_RE = 3, +}; + +enum { + HDMIRX_RST_A, + HDMIRX_RST_P, + HDMIRX_RST_REF, + HDMIRX_RST_BIU, + HDMIRX_NUM_RST, +}; + +static const char *const pix_fmt_str[] = { + "RGB888", + "YUV422", + "YUV444", + "YUV420", +}; + +struct hdmirx_buffer { + struct vb2_v4l2_buffer vb; + struct list_head queue; + u32 buff_addr[VIDEO_MAX_PLANES]; +}; + +struct hdmirx_stream { + struct snps_hdmirx_dev *hdmirx_dev; + struct video_device vdev; + struct vb2_queue buf_queue; + struct list_head buf_head; + struct hdmirx_buffer *curr_buf; + struct hdmirx_buffer *next_buf; + struct v4l2_pix_format_mplane pixm; + const struct v4l2_format_info *out_finfo; + struct mutex vlock; /* to lock resources associated with video buffer and video device */ + spinlock_t vbq_lock; /* to lock video buffer queue */ + bool stopping; + wait_queue_head_t wq_stopped; + u32 frame_idx; + u32 line_flag_int_cnt; + u32 irq_stat; +}; + +struct snps_hdmirx_dev { + struct device *dev; + struct hdmirx_stream stream; + struct v4l2_device v4l2_dev; + struct v4l2_ctrl_handler hdl; + struct v4l2_ctrl *detect_tx_5v_ctrl; + struct v4l2_ctrl *rgb_range; + struct v4l2_ctrl *content_type; + struct v4l2_dv_timings timings; + struct gpio_desc *detect_5v_gpio; + struct delayed_work delayed_work_hotplug; + struct delayed_work delayed_work_res_change; + struct hdmirx_cec *cec; + struct mutex stream_lock; /* to lock video stream capture */ + struct mutex work_lock; /* to lock the critical section of hotplug event */ + struct reset_control_bulk_data resets[HDMIRX_NUM_RST]; + struct clk_bulk_data *clks; + struct regmap *grf; + struct regmap *vo1_grf; + struct completion cr_write_done; + struct completion timer_base_lock; + struct completion avi_pkt_rcv; + struct dentry *debugfs_dir; + struct v4l2_debugfs_if *infoframes; + enum hdmirx_pix_fmt pix_fmt; + void __iomem *regs; + int hdmi_irq; + int dma_irq; + int det_irq; + bool hpd_trigger_level_high; + bool tmds_clk_ratio; + bool plugged; + int num_clks; + u32 edid_blocks_written; + u32 cur_fmt_fourcc; + u32 color_depth; + spinlock_t rst_lock; /* to lock register access */ + u8 edid[EDID_NUM_BLOCKS_MAX * EDID_BLOCK_SIZE]; +}; + +static const struct v4l2_dv_timings cea640x480 = V4L2_DV_BT_CEA_640X480P59_94; + +static const struct v4l2_dv_timings_cap hdmirx_timings_cap = { + .type = V4L2_DV_BT_656_1120, + .reserved = { 0 }, + V4L2_INIT_BT_TIMINGS(640, 4096, /* min/max width */ + 480, 2160, /* min/max height */ + 20000000, 600000000, /* min/max pixelclock */ + /* standards */ + V4L2_DV_BT_STD_CEA861, + /* capabilities */ + V4L2_DV_BT_CAP_PROGRESSIVE | + V4L2_DV_BT_CAP_INTERLACED) +}; + +static void hdmirx_writel(struct snps_hdmirx_dev *hdmirx_dev, int reg, u32 val) +{ + guard(spinlock_irqsave)(&hdmirx_dev->rst_lock); + + writel(val, hdmirx_dev->regs + reg); +} + +static u32 hdmirx_readl(struct snps_hdmirx_dev *hdmirx_dev, int reg) +{ + guard(spinlock_irqsave)(&hdmirx_dev->rst_lock); + + return readl(hdmirx_dev->regs + reg); +} + +static void hdmirx_reset_dma(struct snps_hdmirx_dev *hdmirx_dev) +{ + guard(spinlock_irqsave)(&hdmirx_dev->rst_lock); + + reset_control_reset(hdmirx_dev->resets[0].rstc); +} + +static void hdmirx_update_bits(struct snps_hdmirx_dev *hdmirx_dev, int reg, + u32 mask, u32 data) +{ + u32 val; + + guard(spinlock_irqsave)(&hdmirx_dev->rst_lock); + + val = readl(hdmirx_dev->regs + reg) & ~mask; + val |= (data & mask); + writel(val, hdmirx_dev->regs + reg); +} + +static int hdmirx_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_SOURCE_CHANGE: + return v4l2_src_change_event_subscribe(fh, sub); + case V4L2_EVENT_CTRL: + return v4l2_ctrl_subscribe_event(fh, sub); + default: + break; + } + + return -EINVAL; +} + +static bool tx_5v_power_present(struct snps_hdmirx_dev *hdmirx_dev) +{ + const unsigned int detection_threshold = 7; + int val, i, cnt = 0; + bool ret; + + for (i = 0; i < 10; i++) { + usleep_range(1000, 1100); + val = gpiod_get_value(hdmirx_dev->detect_5v_gpio); + if (val > 0) + cnt++; + if (cnt >= detection_threshold) + break; + } + + ret = (cnt >= detection_threshold) ? true : false; + v4l2_dbg(3, debug, &hdmirx_dev->v4l2_dev, "%s: %d\n", __func__, ret); + + return ret; +} + +static bool signal_not_lock(struct snps_hdmirx_dev *hdmirx_dev) +{ + u32 mu_status, dma_st10, cmu_st; + + mu_status = hdmirx_readl(hdmirx_dev, MAINUNIT_STATUS); + dma_st10 = hdmirx_readl(hdmirx_dev, DMA_STATUS10); + cmu_st = hdmirx_readl(hdmirx_dev, CMU_STATUS); + + if ((mu_status & TMDSVALID_STABLE_ST) && + (dma_st10 & HDMIRX_LOCK) && + (cmu_st & TMDSQPCLK_LOCKED_ST)) + return false; + + return true; +} + +static void hdmirx_get_timings(struct snps_hdmirx_dev *hdmirx_dev, + struct v4l2_bt_timings *bt) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 hact, vact, htotal, vtotal, fps; + u32 hfp, hs, hbp, vfp, vs, vbp; + u32 val; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS2); + hact = (val >> 16) & 0xffff; + vact = val & 0xffff; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS3); + htotal = (val >> 16) & 0xffff; + vtotal = val & 0xffff; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS4); + hs = (val >> 16) & 0xffff; + vs = val & 0xffff; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS5); + hbp = (val >> 16) & 0xffff; + vbp = val & 0xffff; + + if (hdmirx_dev->pix_fmt == HDMIRX_YUV420) { + htotal *= 2; + hbp *= 2; + hs *= 2; + } + + hfp = htotal - hact - hs - hbp; + vfp = vtotal - vact - vs - vbp; + + fps = div_u64(bt->pixelclock + (htotal * vtotal) / 2, htotal * vtotal); + bt->width = hact; + bt->height = vact; + bt->hfrontporch = hfp; + bt->hsync = hs; + bt->hbackporch = hbp; + bt->vfrontporch = vfp; + bt->vsync = vs; + bt->vbackporch = vbp; + + v4l2_dbg(1, debug, v4l2_dev, "get timings from dma\n"); + v4l2_dbg(1, debug, v4l2_dev, + "act:%ux%u%s, total:%ux%u, fps:%u, pixclk:%llu\n", + bt->width, bt->height, bt->interlaced ? "i" : "p", + htotal, vtotal, fps, bt->pixelclock); + + v4l2_dbg(2, debug, v4l2_dev, + "hfp:%u, hact:%u, hs:%u, hbp:%u, vfp:%u, vact:%u, vs:%u, vbp:%u\n", + bt->hfrontporch, hact, bt->hsync, bt->hbackporch, + bt->vfrontporch, vact, bt->vsync, bt->vbackporch); + + if (bt->interlaced == V4L2_DV_INTERLACED) { + bt->height *= 2; + bt->il_vfrontporch = bt->vfrontporch; + bt->il_vsync = bt->vsync + 1; + bt->il_vbackporch = bt->vbackporch; + } +} + +static bool hdmirx_check_timing_valid(struct v4l2_bt_timings *bt) +{ + /* + * Sanity-check timing values. Some of the values will be outside + * of a valid range till hardware becomes ready to perform capture. + */ + if (bt->width < 100 || bt->width > 5000 || + bt->height < 100 || bt->height > 5000) + return false; + + if (!bt->hsync || bt->hsync > 200 || + !bt->vsync || bt->vsync > 100) + return false; + + /* + * According to the CEA-861, 1280x720p25 Hblank timing is up to 2680, + * and all standard video format timings are less than 3000. + */ + if (!bt->hbackporch || bt->hbackporch > 3000 || + !bt->vbackporch || bt->vbackporch > 3000) + return false; + + if (!bt->hfrontporch || bt->hfrontporch > 3000 || + !bt->vfrontporch || bt->vfrontporch > 3000) + return false; + + return true; +} + +static void hdmirx_toggle_polarity(struct snps_hdmirx_dev *hdmirx_dev) +{ + u32 val = hdmirx_readl(hdmirx_dev, DMA_CONFIG6); + + if (!(val & (VSYNC_TOGGLE_EN | HSYNC_TOGGLE_EN))) { + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, + VSYNC_TOGGLE_EN | HSYNC_TOGGLE_EN, + VSYNC_TOGGLE_EN | HSYNC_TOGGLE_EN); + hdmirx_update_bits(hdmirx_dev, VIDEO_CONFIG2, + VPROC_VSYNC_POL_OVR_VALUE | + VPROC_VSYNC_POL_OVR_EN | + VPROC_HSYNC_POL_OVR_VALUE | + VPROC_HSYNC_POL_OVR_EN, + VPROC_VSYNC_POL_OVR_EN | + VPROC_HSYNC_POL_OVR_EN); + return; + } + + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, + VSYNC_TOGGLE_EN | HSYNC_TOGGLE_EN, 0); + + hdmirx_update_bits(hdmirx_dev, VIDEO_CONFIG2, + VPROC_VSYNC_POL_OVR_VALUE | + VPROC_VSYNC_POL_OVR_EN | + VPROC_HSYNC_POL_OVR_VALUE | + VPROC_HSYNC_POL_OVR_EN, 0); +} + +/* + * When querying DV timings during preview, if the DMA's timing is stable, + * we retrieve the timings directly from the DMA. However, if the current + * resolution is negative, obtaining the timing from CTRL may require a + * change in the sync polarity, potentially leading to DMA errors. + */ +static int hdmirx_get_detected_timings(struct snps_hdmirx_dev *hdmirx_dev, + struct v4l2_dv_timings *timings) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_bt_timings *bt = &timings->bt; + u32 val, tmdsqpclk_freq, pix_clk; + unsigned int num_retries = 0; + u32 field_type, deframer_st; + u64 tmp_data, tmds_clk; + bool is_dvi_mode; + int ret; + + mutex_lock(&hdmirx_dev->work_lock); +retry: + memset(timings, 0, sizeof(struct v4l2_dv_timings)); + timings->type = V4L2_DV_BT_656_1120; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS11); + field_type = (val & HDMIRX_TYPE_MASK) >> 7; + + if (field_type & BIT(0)) + bt->interlaced = V4L2_DV_INTERLACED; + else + bt->interlaced = V4L2_DV_PROGRESSIVE; + + deframer_st = hdmirx_readl(hdmirx_dev, DEFRAMER_STATUS); + is_dvi_mode = !(deframer_st & OPMODE_STS_MASK); + + tmdsqpclk_freq = hdmirx_readl(hdmirx_dev, CMU_TMDSQPCLK_FREQ); + tmds_clk = tmdsqpclk_freq * 4 * 1000; + tmp_data = tmds_clk * 24; + do_div(tmp_data, hdmirx_dev->color_depth); + pix_clk = tmp_data; + bt->pixelclock = pix_clk; + + if (hdmirx_dev->pix_fmt == HDMIRX_YUV420) + bt->pixelclock *= 2; + + hdmirx_get_timings(hdmirx_dev, bt); + + v4l2_dbg(2, debug, v4l2_dev, "tmds_clk:%llu, pix_clk:%d\n", tmds_clk, pix_clk); + v4l2_dbg(1, debug, v4l2_dev, "interlace:%d, fmt:%d, color:%d, mode:%s\n", + bt->interlaced, hdmirx_dev->pix_fmt, + hdmirx_dev->color_depth, + is_dvi_mode ? "dvi" : "hdmi"); + v4l2_dbg(2, debug, v4l2_dev, "deframer_st:%#x\n", deframer_st); + + /* + * Timing will be invalid until it's latched by HW or if signal's + * polarity doesn't match. + */ + if (!hdmirx_check_timing_valid(bt)) { + if (num_retries++ < 20) { + if (num_retries == 10) + hdmirx_toggle_polarity(hdmirx_dev); + + usleep_range(10 * 1000, 10 * 1100); + goto retry; + } + + ret = -ERANGE; + } else { + ret = 0; + } + + mutex_unlock(&hdmirx_dev->work_lock); + + return ret; +} + +static bool port_no_link(struct snps_hdmirx_dev *hdmirx_dev) +{ + return !tx_5v_power_present(hdmirx_dev); +} + +static int hdmirx_query_dv_timings(struct file *file, void *_fh, + struct v4l2_dv_timings *timings) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + int ret; + + if (port_no_link(hdmirx_dev)) { + v4l2_err(v4l2_dev, "%s: port has no link\n", __func__); + return -ENOLINK; + } + + if (signal_not_lock(hdmirx_dev)) { + v4l2_err(v4l2_dev, "%s: signal is not locked\n", __func__); + return -ENOLCK; + } + + ret = hdmirx_get_detected_timings(hdmirx_dev, timings); + if (ret) + return ret; + + if (debug) + v4l2_print_dv_timings(hdmirx_dev->v4l2_dev.name, + "query_dv_timings: ", timings, false); + + if (!v4l2_valid_dv_timings(timings, &hdmirx_timings_cap, NULL, NULL)) { + v4l2_dbg(1, debug, v4l2_dev, "%s: timings out of range\n", __func__); + return -ERANGE; + } + + return 0; +} + +static void hdmirx_hpd_ctrl(struct snps_hdmirx_dev *hdmirx_dev, bool en) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(1, debug, v4l2_dev, "%s: %sable, hpd_trigger_level_high:%d\n", + __func__, en ? "en" : "dis", hdmirx_dev->hpd_trigger_level_high); + + hdmirx_update_bits(hdmirx_dev, SCDC_CONFIG, HPDLOW, en ? 0 : HPDLOW); + hdmirx_writel(hdmirx_dev, CORE_CONFIG, + hdmirx_dev->hpd_trigger_level_high ? en : !en); + + /* 100ms delay as per HDMI spec */ + if (!en) + msleep(100); +} + +static void hdmirx_write_edid_data(struct snps_hdmirx_dev *hdmirx_dev, + u8 *edid, unsigned int num_blocks) +{ + static u8 data[EDID_NUM_BLOCKS_MAX * EDID_BLOCK_SIZE]; + unsigned int edid_len = num_blocks * EDID_BLOCK_SIZE; + unsigned int i; + + cec_s_phys_addr_from_edid(hdmirx_dev->cec->adap, + (const struct edid *)edid); + + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG11, + EDID_READ_EN_MASK | + EDID_WRITE_EN_MASK | + EDID_SLAVE_ADDR_MASK, + EDID_READ_EN(0) | + EDID_WRITE_EN(1) | + EDID_SLAVE_ADDR(0x50)); + for (i = 0; i < edid_len; i++) + hdmirx_writel(hdmirx_dev, DMA_CONFIG10, edid[i]); + + /* read out for debug */ + if (debug >= 2) { + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG11, + EDID_READ_EN_MASK | + EDID_WRITE_EN_MASK, + EDID_READ_EN(1) | + EDID_WRITE_EN(0)); + + for (i = 0; i < edid_len; i++) + data[i] = hdmirx_readl(hdmirx_dev, DMA_STATUS14); + + print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, data, + edid_len, false); + } + + /* + * Must set EDID_READ_EN & EDID_WRITE_EN bit to 0, + * when the read/write edid operation is completed. Otherwise, it + * will affect the reading and writing of other registers. + */ + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG11, + EDID_READ_EN_MASK | EDID_WRITE_EN_MASK, + EDID_READ_EN(0) | EDID_WRITE_EN(0)); +} + +static void hdmirx_write_edid(struct snps_hdmirx_dev *hdmirx_dev, + struct v4l2_edid *edid) +{ + memset(edid->reserved, 0, sizeof(edid->reserved)); + memset(hdmirx_dev->edid, 0, sizeof(hdmirx_dev->edid)); + + hdmirx_write_edid_data(hdmirx_dev, edid->edid, edid->blocks); + + hdmirx_dev->edid_blocks_written = edid->blocks; + memcpy(hdmirx_dev->edid, edid->edid, edid->blocks * EDID_BLOCK_SIZE); +} + +/* + * Before clearing interrupt, we need to read the interrupt status. + */ +static inline void hdmirx_clear_interrupt(struct snps_hdmirx_dev *hdmirx_dev, + u32 reg, u32 val) +{ + /* (interrupt status register) = (interrupt clear register) - 0x8 */ + hdmirx_readl(hdmirx_dev, reg - 0x8); + hdmirx_writel(hdmirx_dev, reg, val); +} + +static void hdmirx_interrupts_setup(struct snps_hdmirx_dev *hdmirx_dev, bool en) +{ + v4l2_dbg(1, debug, &hdmirx_dev->v4l2_dev, "%s: %sable\n", + __func__, en ? "en" : "dis"); + + disable_irq(hdmirx_dev->hdmi_irq); + + /* Note: In DVI mode, it needs to be written twice to take effect. */ + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, AVPUNIT_0_INT_CLEAR, 0xffffffff); + + if (en) { + hdmirx_update_bits(hdmirx_dev, MAINUNIT_0_INT_MASK_N, + TMDSQPCLK_OFF_CHG | TMDSQPCLK_LOCKED_CHG, + TMDSQPCLK_OFF_CHG | TMDSQPCLK_LOCKED_CHG); + hdmirx_update_bits(hdmirx_dev, MAINUNIT_2_INT_MASK_N, + TMDSVALID_STABLE_CHG, TMDSVALID_STABLE_CHG); + hdmirx_update_bits(hdmirx_dev, AVPUNIT_0_INT_MASK_N, + CED_DYN_CNT_CH2_IRQ | + CED_DYN_CNT_CH1_IRQ | + CED_DYN_CNT_CH0_IRQ, + CED_DYN_CNT_CH2_IRQ | + CED_DYN_CNT_CH1_IRQ | + CED_DYN_CNT_CH0_IRQ); + } else { + hdmirx_writel(hdmirx_dev, MAINUNIT_0_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, MAINUNIT_2_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, AVPUNIT_0_INT_MASK_N, 0); + } + + enable_irq(hdmirx_dev->hdmi_irq); +} + +static void hdmirx_plugout(struct snps_hdmirx_dev *hdmirx_dev) +{ + if (!hdmirx_dev->plugged) + return; + + hdmirx_update_bits(hdmirx_dev, SCDC_CONFIG, POWERPROVIDED, 0); + hdmirx_interrupts_setup(hdmirx_dev, false); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, HDMIRX_DMA_EN, 0); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG4, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN, 0); + hdmirx_reset_dma(hdmirx_dev); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, HDMI_DISABLE | PHY_RESET | + PHY_PDDQ, HDMI_DISABLE); + hdmirx_writel(hdmirx_dev, PHYCREG_CONFIG0, 0x0); + cancel_delayed_work(&hdmirx_dev->delayed_work_res_change); + + /* will be NULL on driver removal */ + if (hdmirx_dev->rgb_range) + v4l2_ctrl_s_ctrl(hdmirx_dev->rgb_range, V4L2_DV_RGB_RANGE_AUTO); + + if (hdmirx_dev->content_type) + v4l2_ctrl_s_ctrl(hdmirx_dev->content_type, + V4L2_DV_IT_CONTENT_TYPE_NO_ITC); + + hdmirx_dev->plugged = false; +} + +static int hdmirx_set_edid(struct file *file, void *fh, struct v4l2_edid *edid) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + u16 phys_addr; + int err; + + if (edid->pad) + return -EINVAL; + + if (edid->start_block) + return -EINVAL; + + if (edid->blocks > EDID_NUM_BLOCKS_MAX) { + edid->blocks = EDID_NUM_BLOCKS_MAX; + return -E2BIG; + } + + if (edid->blocks) { + phys_addr = cec_get_edid_phys_addr(edid->edid, + edid->blocks * EDID_BLOCK_SIZE, + NULL); + + err = v4l2_phys_addr_validate(phys_addr, &phys_addr, NULL); + if (err) + return err; + } + + /* + * Touching HW registers in parallel with plugin/out handlers + * will bring hardware into a bad state. + */ + mutex_lock(&hdmirx_dev->work_lock); + + hdmirx_hpd_ctrl(hdmirx_dev, false); + + if (edid->blocks) { + hdmirx_write_edid(hdmirx_dev, edid); + hdmirx_hpd_ctrl(hdmirx_dev, true); + } else { + cec_phys_addr_invalidate(hdmirx_dev->cec->adap); + hdmirx_dev->edid_blocks_written = 0; + } + + mutex_unlock(&hdmirx_dev->work_lock); + + return 0; +} + +static int hdmirx_get_edid(struct file *file, void *fh, struct v4l2_edid *edid) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + memset(edid->reserved, 0, sizeof(edid->reserved)); + + if (edid->pad) + return -EINVAL; + + if (!edid->start_block && !edid->blocks) { + edid->blocks = hdmirx_dev->edid_blocks_written; + return 0; + } + + if (!hdmirx_dev->edid_blocks_written) + return -ENODATA; + + if (edid->start_block >= hdmirx_dev->edid_blocks_written || !edid->blocks) + return -EINVAL; + + if (edid->start_block + edid->blocks > hdmirx_dev->edid_blocks_written) + edid->blocks = hdmirx_dev->edid_blocks_written - edid->start_block; + + memcpy(edid->edid, hdmirx_dev->edid, edid->blocks * EDID_BLOCK_SIZE); + + v4l2_dbg(1, debug, v4l2_dev, "%s: read EDID:\n", __func__); + if (debug > 0) + print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, + edid->edid, edid->blocks * EDID_BLOCK_SIZE, false); + + return 0; +} + +static int hdmirx_g_parm(struct file *file, void *priv, + struct v4l2_streamparm *parm) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + + if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) + return -EINVAL; + + parm->parm.capture.timeperframe = v4l2_calc_timeperframe(&hdmirx_dev->timings); + + return 0; +} + +static int hdmirx_dv_timings_cap(struct file *file, void *fh, + struct v4l2_dv_timings_cap *cap) +{ + *cap = hdmirx_timings_cap; + return 0; +} + +static int hdmirx_enum_dv_timings(struct file *file, void *_fh, + struct v4l2_enum_dv_timings *timings) +{ + return v4l2_enum_dv_timings_cap(timings, &hdmirx_timings_cap, NULL, NULL); +} + +static void hdmirx_scdc_init(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_update_bits(hdmirx_dev, I2C_SLAVE_CONFIG1, + I2C_SDA_OUT_HOLD_VALUE_QST_MASK | + I2C_SDA_IN_HOLD_VALUE_QST_MASK, + I2C_SDA_OUT_HOLD_VALUE_QST(0x80) | + I2C_SDA_IN_HOLD_VALUE_QST(0x15)); + hdmirx_update_bits(hdmirx_dev, SCDC_REGBANK_CONFIG0, + SCDC_SINKVERSION_QST_MASK, + SCDC_SINKVERSION_QST(1)); +} + +static int wait_reg_bit_status(struct snps_hdmirx_dev *hdmirx_dev, u32 reg, + u32 bit_mask, u32 expect_val, bool is_grf, + u32 ms) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 i, val; + + for (i = 0; i < ms; i++) { + if (is_grf) + regmap_read(hdmirx_dev->grf, reg, &val); + else + val = hdmirx_readl(hdmirx_dev, reg); + + if ((val & bit_mask) == expect_val) { + v4l2_dbg(2, debug, v4l2_dev, + "%s: i:%d, time: %dms\n", __func__, i, ms); + break; + } + usleep_range(1000, 1010); + } + + if (i == ms) + return -1; + + return 0; +} + +static int hdmirx_phy_register_write(struct snps_hdmirx_dev *hdmirx_dev, + u32 phy_reg, u32 val) +{ + struct device *dev = hdmirx_dev->dev; + + reinit_completion(&hdmirx_dev->cr_write_done); + /* clear irq status */ + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + /* en irq */ + hdmirx_update_bits(hdmirx_dev, MAINUNIT_2_INT_MASK_N, + PHYCREG_CR_WRITE_DONE, PHYCREG_CR_WRITE_DONE); + /* write phy reg addr */ + hdmirx_writel(hdmirx_dev, PHYCREG_CONFIG1, phy_reg); + /* write phy reg val */ + hdmirx_writel(hdmirx_dev, PHYCREG_CONFIG2, val); + /* config write enable */ + hdmirx_writel(hdmirx_dev, PHYCREG_CONTROL, PHYCREG_CR_PARA_WRITE_P); + + if (!wait_for_completion_timeout(&hdmirx_dev->cr_write_done, + msecs_to_jiffies(20))) { + dev_err(dev, "%s wait cr write done failed\n", __func__); + return -1; + } + + return 0; +} + +static void hdmirx_tmds_clk_ratio_config(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 val; + + val = hdmirx_readl(hdmirx_dev, SCDC_REGBANK_STATUS1); + v4l2_dbg(3, debug, v4l2_dev, "%s: scdc_regbank_st:%#x\n", __func__, val); + hdmirx_dev->tmds_clk_ratio = (val & SCDC_TMDSBITCLKRATIO) > 0; + + if (hdmirx_dev->tmds_clk_ratio) { + v4l2_dbg(3, debug, v4l2_dev, "%s: HDMITX greater than 3.4Gbps\n", __func__); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, + TMDS_CLOCK_RATIO, TMDS_CLOCK_RATIO); + } else { + v4l2_dbg(3, debug, v4l2_dev, "%s: HDMITX less than 3.4Gbps\n", __func__); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, + TMDS_CLOCK_RATIO, 0); + } +} + +static void hdmirx_phy_config(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct device *dev = hdmirx_dev->dev; + + hdmirx_clear_interrupt(hdmirx_dev, SCDC_INT_CLEAR, 0xffffffff); + hdmirx_update_bits(hdmirx_dev, SCDC_INT_MASK_N, SCDCTMDSCCFG_CHG, + SCDCTMDSCCFG_CHG); + /* cr_para_clk 24M */ + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, REFFREQ_SEL_MASK, REFFREQ_SEL(0)); + /* rx data width 40bit valid */ + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, RXDATA_WIDTH, RXDATA_WIDTH); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, PHY_RESET, PHY_RESET); + usleep_range(100, 110); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, PHY_RESET, 0); + usleep_range(100, 110); + /* select cr para interface */ + hdmirx_writel(hdmirx_dev, PHYCREG_CONFIG0, 0x3); + + if (wait_reg_bit_status(hdmirx_dev, SYS_GRF_SOC_STATUS1, + HDMIRXPHY_SRAM_INIT_DONE, + HDMIRXPHY_SRAM_INIT_DONE, true, 10)) + dev_err(dev, "%s: phy SRAM init failed\n", __func__); + + regmap_write(hdmirx_dev->grf, SYS_GRF_SOC_CON1, + (HDMIRXPHY_SRAM_EXT_LD_DONE << 16) | + HDMIRXPHY_SRAM_EXT_LD_DONE); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 2); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 3); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 2); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 2); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 3); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 2); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 0); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 1); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 0); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 0); + + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_3_REG, + CDR_SETTING_BOUNDARY_3_DEFAULT); + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_4_REG, + CDR_SETTING_BOUNDARY_4_DEFAULT); + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_5_REG, + CDR_SETTING_BOUNDARY_5_DEFAULT); + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_6_REG, + CDR_SETTING_BOUNDARY_6_DEFAULT); + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_7_REG, + CDR_SETTING_BOUNDARY_7_DEFAULT); + + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, PHY_PDDQ, 0); + if (wait_reg_bit_status(hdmirx_dev, PHY_STATUS, PDDQ_ACK, 0, false, 10)) + dev_err(dev, "%s: wait pddq ack failed\n", __func__); + + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, HDMI_DISABLE, 0); + if (wait_reg_bit_status(hdmirx_dev, PHY_STATUS, HDMI_DISABLE_ACK, 0, + false, 50)) + dev_err(dev, "%s: wait hdmi disable ack failed\n", __func__); + + hdmirx_tmds_clk_ratio_config(hdmirx_dev); +} + +static void hdmirx_controller_init(struct snps_hdmirx_dev *hdmirx_dev) +{ + const unsigned long iref_clk_freq_hz = 428571429; + struct device *dev = hdmirx_dev->dev; + + reinit_completion(&hdmirx_dev->timer_base_lock); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + /* en irq */ + hdmirx_update_bits(hdmirx_dev, MAINUNIT_0_INT_MASK_N, + TIMER_BASE_LOCKED_IRQ, TIMER_BASE_LOCKED_IRQ); + /* write irefclk freq */ + hdmirx_writel(hdmirx_dev, GLOBAL_TIMER_REF_BASE, iref_clk_freq_hz); + + if (!wait_for_completion_timeout(&hdmirx_dev->timer_base_lock, + msecs_to_jiffies(20))) + dev_err(dev, "%s wait timer base lock failed\n", __func__); + + hdmirx_update_bits(hdmirx_dev, CMU_CONFIG0, + TMDSQPCLK_STABLE_FREQ_MARGIN_MASK | + AUDCLK_STABLE_FREQ_MARGIN_MASK, + TMDSQPCLK_STABLE_FREQ_MARGIN(2) | + AUDCLK_STABLE_FREQ_MARGIN(1)); + hdmirx_update_bits(hdmirx_dev, DESCRAND_EN_CONTROL, + SCRAMB_EN_SEL_QST_MASK, SCRAMB_EN_SEL_QST(1)); + hdmirx_update_bits(hdmirx_dev, CED_CONFIG, + CED_VIDDATACHECKEN_QST | + CED_DATAISCHECKEN_QST | + CED_GBCHECKEN_QST | + CED_CTRLCHECKEN_QST | + CED_CHLOCKMAXER_QST_MASK, + CED_VIDDATACHECKEN_QST | + CED_GBCHECKEN_QST | + CED_CTRLCHECKEN_QST | + CED_CHLOCKMAXER_QST(0x10)); + hdmirx_update_bits(hdmirx_dev, DEFRAMER_CONFIG0, + VS_REMAPFILTER_EN_QST | VS_FILTER_ORDER_QST_MASK, + VS_REMAPFILTER_EN_QST | VS_FILTER_ORDER_QST(0x3)); +} + +static void hdmirx_get_colordepth(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 val, color_depth_reg; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS11); + color_depth_reg = (val & HDMIRX_COLOR_DEPTH_MASK) >> 3; + + switch (color_depth_reg) { + case 0x4: + hdmirx_dev->color_depth = 24; + break; + case 0x5: + hdmirx_dev->color_depth = 30; + break; + case 0x6: + hdmirx_dev->color_depth = 36; + break; + case 0x7: + hdmirx_dev->color_depth = 48; + break; + default: + hdmirx_dev->color_depth = 24; + break; + } + + v4l2_dbg(1, debug, v4l2_dev, "%s: color_depth: %d, reg_val:%d\n", + __func__, hdmirx_dev->color_depth, color_depth_reg); +} + +static void hdmirx_get_pix_fmt(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 val; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS11); + hdmirx_dev->pix_fmt = val & HDMIRX_FORMAT_MASK; + + switch (hdmirx_dev->pix_fmt) { + case HDMIRX_RGB888: + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_BGR24; + break; + case HDMIRX_YUV422: + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_NV16; + break; + case HDMIRX_YUV444: + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_NV24; + break; + case HDMIRX_YUV420: + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_NV12; + break; + default: + v4l2_err(v4l2_dev, + "%s: err pix_fmt: %d, set RGB888 as default\n", + __func__, hdmirx_dev->pix_fmt); + hdmirx_dev->pix_fmt = HDMIRX_RGB888; + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_BGR24; + break; + } + + v4l2_dbg(1, debug, v4l2_dev, "%s: pix_fmt: %s\n", __func__, + pix_fmt_str[hdmirx_dev->pix_fmt]); +} + +static void hdmirx_read_avi_infoframe(struct snps_hdmirx_dev *hdmirx_dev, + u8 *aviif) +{ + unsigned int i, b, itr = 0; + u32 val; + + aviif[itr++] = HDMI_INFOFRAME_TYPE_AVI; + val = hdmirx_readl(hdmirx_dev, PKTDEC_AVIIF_PH2_1); + aviif[itr++] = val & 0xff; + aviif[itr++] = (val >> 8) & 0xff; + + for (i = 0; i < 7; i++) { + val = hdmirx_readl(hdmirx_dev, PKTDEC_AVIIF_PB3_0 + 4 * i); + + for (b = 0; b < 4; b++) + aviif[itr++] = (val >> (8 * b)) & 0xff; + } +} + +static void hdmirx_get_avi_infoframe(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + union hdmi_infoframe frame = {}; + u8 aviif[3 + 7 * 4]; + int err; + + hdmirx_read_avi_infoframe(hdmirx_dev, aviif); + + err = hdmi_infoframe_unpack(&frame, aviif, sizeof(aviif)); + if (err) { + v4l2_err(v4l2_dev, "failed to unpack AVI infoframe\n"); + return; + } + + v4l2_ctrl_s_ctrl(hdmirx_dev->rgb_range, frame.avi.quantization_range); + + if (frame.avi.itc) + v4l2_ctrl_s_ctrl(hdmirx_dev->content_type, + frame.avi.content_type); + else + v4l2_ctrl_s_ctrl(hdmirx_dev->content_type, + V4L2_DV_IT_CONTENT_TYPE_NO_ITC); +} + +static ssize_t +hdmirx_debugfs_if_read(u32 type, void *priv, struct file *filp, + char __user *ubuf, size_t count, loff_t *ppos) +{ + struct snps_hdmirx_dev *hdmirx_dev = priv; + u8 aviif[V4L2_DEBUGFS_IF_MAX_LEN] = {}; + int len; + + if (type != V4L2_DEBUGFS_IF_AVI) + return 0; + + hdmirx_read_avi_infoframe(hdmirx_dev, aviif); + + len = aviif[2] + 4; + if (len > V4L2_DEBUGFS_IF_MAX_LEN) + len = -ENOENT; + else + len = simple_read_from_buffer(ubuf, count, ppos, aviif, len); + + return len < 0 ? 0 : len; +} + +static void hdmirx_format_change(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct hdmirx_stream *stream = &hdmirx_dev->stream; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + static const struct v4l2_event ev_src_chg = { + .type = V4L2_EVENT_SOURCE_CHANGE, + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, + }; + + hdmirx_get_pix_fmt(hdmirx_dev); + hdmirx_get_colordepth(hdmirx_dev); + hdmirx_get_avi_infoframe(hdmirx_dev); + + v4l2_dbg(1, debug, v4l2_dev, "%s: queue res_chg_event\n", __func__); + v4l2_event_queue(&stream->vdev, &ev_src_chg); +} + +static void hdmirx_set_ddr_store_fmt(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + enum ddr_store_fmt store_fmt; + u32 dma_cfg1; + + switch (hdmirx_dev->pix_fmt) { + case HDMIRX_RGB888: + store_fmt = STORE_RGB888; + break; + case HDMIRX_YUV444: + store_fmt = STORE_YUV444_8BIT; + break; + case HDMIRX_YUV422: + store_fmt = STORE_YUV422_8BIT; + break; + case HDMIRX_YUV420: + store_fmt = STORE_YUV420_8BIT; + break; + default: + store_fmt = STORE_RGB888; + break; + } + + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG1, + DDR_STORE_FORMAT_MASK, DDR_STORE_FORMAT(store_fmt)); + dma_cfg1 = hdmirx_readl(hdmirx_dev, DMA_CONFIG1); + v4l2_dbg(1, debug, v4l2_dev, "%s: pix_fmt: %s, DMA_CONFIG1:%#x\n", + __func__, pix_fmt_str[hdmirx_dev->pix_fmt], dma_cfg1); +} + +static void hdmirx_dma_config(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_set_ddr_store_fmt(hdmirx_dev); + + /* Note: uv_swap, rb can not swap, doc err */ + if (hdmirx_dev->cur_fmt_fourcc != V4L2_PIX_FMT_NV16) + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, RB_SWAP_EN, RB_SWAP_EN); + else + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, RB_SWAP_EN, 0); + + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG7, + LOCK_FRAME_NUM_MASK, + LOCK_FRAME_NUM(2)); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG1, + UV_WID_MASK | Y_WID_MASK | ABANDON_EN, + UV_WID(1) | Y_WID(2) | ABANDON_EN); +} + +static void hdmirx_submodule_init(struct snps_hdmirx_dev *hdmirx_dev) +{ + /* Note: if not config HDCP2_CONFIG, there will be some errors; */ + hdmirx_update_bits(hdmirx_dev, HDCP2_CONFIG, + HDCP2_SWITCH_OVR_VALUE | + HDCP2_SWITCH_OVR_EN, + HDCP2_SWITCH_OVR_EN); + hdmirx_scdc_init(hdmirx_dev); + hdmirx_controller_init(hdmirx_dev); +} + +static int hdmirx_enum_input(struct file *file, void *priv, + struct v4l2_input *input) +{ + if (input->index > 0) + return -EINVAL; + + input->type = V4L2_INPUT_TYPE_CAMERA; + input->std = 0; + strscpy(input->name, "HDMI IN", sizeof(input->name)); + input->capabilities = V4L2_IN_CAP_DV_TIMINGS; + + return 0; +} + +static int hdmirx_get_input(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int hdmirx_set_input(struct file *file, void *priv, unsigned int i) +{ + if (i) + return -EINVAL; + return 0; +} + +static void hdmirx_set_fmt(struct hdmirx_stream *stream, + struct v4l2_pix_format_mplane *pixm, bool try) +{ + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_bt_timings *bt = &hdmirx_dev->timings.bt; + const struct v4l2_format_info *finfo; + unsigned int imagesize = 0; + unsigned int i; + + memset(&pixm->plane_fmt[0], 0, sizeof(struct v4l2_plane_pix_format)); + finfo = v4l2_format_info(pixm->pixelformat); + if (!finfo) { + finfo = v4l2_format_info(V4L2_PIX_FMT_BGR24); + v4l2_dbg(1, debug, v4l2_dev, + "%s: set_fmt:%#x not supported, use def_fmt:%x\n", + __func__, pixm->pixelformat, finfo->format); + } + + if (!bt->width || !bt->height) + v4l2_dbg(1, debug, v4l2_dev, "%s: invalid resolution:%#xx%#x\n", + __func__, bt->width, bt->height); + + pixm->pixelformat = finfo->format; + pixm->width = bt->width; + pixm->height = bt->height; + pixm->num_planes = finfo->mem_planes; + pixm->quantization = V4L2_QUANTIZATION_DEFAULT; + pixm->colorspace = V4L2_COLORSPACE_SRGB; + pixm->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; + + if (bt->interlaced == V4L2_DV_INTERLACED) + pixm->field = V4L2_FIELD_INTERLACED_TB; + else + pixm->field = V4L2_FIELD_NONE; + + memset(pixm->reserved, 0, sizeof(pixm->reserved)); + + v4l2_fill_pixfmt_mp(pixm, finfo->format, pixm->width, pixm->height); + + for (i = 0; i < finfo->comp_planes; i++) { + struct v4l2_plane_pix_format *plane_fmt; + int width, height, bpl, size, bpp = 0; + const unsigned int hw_align = 64; + + if (!i) { + width = pixm->width; + height = pixm->height; + } else { + width = pixm->width / finfo->hdiv; + height = pixm->height / finfo->vdiv; + } + + switch (finfo->format) { + case V4L2_PIX_FMT_NV24: + case V4L2_PIX_FMT_NV16: + case V4L2_PIX_FMT_NV12: + case V4L2_PIX_FMT_BGR24: + bpp = finfo->bpp[i]; + break; + default: + v4l2_dbg(1, debug, v4l2_dev, + "fourcc: %#x is not supported\n", + finfo->format); + break; + } + + bpl = ALIGN(width * bpp, hw_align); + size = bpl * height; + imagesize += size; + + if (finfo->mem_planes > i) { + /* Set bpl and size for each mplane */ + plane_fmt = pixm->plane_fmt + i; + plane_fmt->bytesperline = bpl; + plane_fmt->sizeimage = size; + } + + v4l2_dbg(1, debug, v4l2_dev, + "C-Plane %u size: %d, Total imagesize: %d\n", + i, size, imagesize); + } + + /* Convert to non-MPLANE format as we want to unify non-MPLANE and MPLANE */ + if (finfo->mem_planes == 1) + pixm->plane_fmt[0].sizeimage = imagesize; + + if (!try) { + stream->out_finfo = finfo; + stream->pixm = *pixm; + v4l2_dbg(1, debug, v4l2_dev, + "%s: req(%d, %d), out(%d, %d), fmt:%#x\n", __func__, + pixm->width, pixm->height, stream->pixm.width, + stream->pixm.height, finfo->format); + } +} + +static int hdmirx_enum_fmt_vid_cap_mplane(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + + if (f->index >= 1) + return -EINVAL; + + f->pixelformat = hdmirx_dev->cur_fmt_fourcc; + + return 0; +} + +static int hdmirx_s_fmt_vid_cap_mplane(struct file *file, + void *priv, struct v4l2_format *f) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + if (vb2_is_busy(&stream->buf_queue)) { + v4l2_err(v4l2_dev, "%s: queue busy\n", __func__); + return -EBUSY; + } + + hdmirx_set_fmt(stream, &f->fmt.pix_mp, false); + + return 0; +} + +static int hdmirx_g_fmt_vid_cap_mplane(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_pix_format_mplane pixm = {}; + + pixm.pixelformat = hdmirx_dev->cur_fmt_fourcc; + hdmirx_set_fmt(stream, &pixm, true); + f->fmt.pix_mp = pixm; + + return 0; +} + +static int hdmirx_g_dv_timings(struct file *file, void *_fh, + struct v4l2_dv_timings *timings) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 dma_cfg1; + + *timings = hdmirx_dev->timings; + dma_cfg1 = hdmirx_readl(hdmirx_dev, DMA_CONFIG1); + v4l2_dbg(1, debug, v4l2_dev, "%s: pix_fmt: %s, DMA_CONFIG1:%#x\n", + __func__, pix_fmt_str[hdmirx_dev->pix_fmt], dma_cfg1); + + return 0; +} + +static int hdmirx_s_dv_timings(struct file *file, void *_fh, + struct v4l2_dv_timings *timings) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + if (!timings) + return -EINVAL; + + if (debug) + v4l2_print_dv_timings(hdmirx_dev->v4l2_dev.name, + "s_dv_timings: ", timings, false); + + if (!v4l2_valid_dv_timings(timings, &hdmirx_timings_cap, NULL, NULL)) { + v4l2_dbg(1, debug, v4l2_dev, + "%s: timings out of range\n", __func__); + return -ERANGE; + } + + /* Check if the timings are part of the CEA-861 timings. */ + v4l2_find_dv_timings_cap(timings, &hdmirx_timings_cap, 0, NULL, NULL); + + if (v4l2_match_dv_timings(&hdmirx_dev->timings, timings, 0, false)) { + v4l2_dbg(1, debug, v4l2_dev, "%s: no change\n", __func__); + return 0; + } + + /* + * Changing the timings implies a format change, which is not allowed + * while buffers for use with streaming have already been allocated. + */ + if (vb2_is_busy(&stream->buf_queue)) + return -EBUSY; + + hdmirx_dev->timings = *timings; + /* Update the internal format */ + hdmirx_set_fmt(stream, &stream->pixm, false); + + return 0; +} + +static int hdmirx_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct device *dev = stream->hdmirx_dev->dev; + + strscpy(cap->driver, dev->driver->name, sizeof(cap->driver)); + strscpy(cap->card, dev->driver->name, sizeof(cap->card)); + + return 0; +} + +static int hdmirx_queue_setup(struct vb2_queue *queue, + unsigned int *num_buffers, + unsigned int *num_planes, + unsigned int sizes[], + struct device *alloc_ctxs[]) +{ + struct hdmirx_stream *stream = vb2_get_drv_priv(queue); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + const struct v4l2_pix_format_mplane *pixm = NULL; + const struct v4l2_format_info *out_finfo; + u32 i; + + pixm = &stream->pixm; + out_finfo = stream->out_finfo; + + if (!out_finfo) { + v4l2_err(v4l2_dev, "%s: out_fmt not set\n", __func__); + return -EINVAL; + } + + if (*num_planes) { + if (*num_planes != pixm->num_planes) + return -EINVAL; + + for (i = 0; i < *num_planes; i++) + if (sizes[i] < pixm->plane_fmt[i].sizeimage) + return -EINVAL; + return 0; + } + + *num_planes = out_finfo->mem_planes; + + for (i = 0; i < out_finfo->mem_planes; i++) + sizes[i] = pixm->plane_fmt[i].sizeimage; + + v4l2_dbg(1, debug, v4l2_dev, "%s: count %d, size %d\n", + v4l2_type_names[queue->type], *num_buffers, sizes[0]); + + return 0; +} + +/* + * The vb2_buffer are stored in hdmirx_buffer, in order to unify + * mplane buffer and none-mplane buffer. + */ +static void hdmirx_buf_queue(struct vb2_buffer *vb) +{ + const struct v4l2_pix_format_mplane *pixm; + const struct v4l2_format_info *out_finfo; + struct hdmirx_buffer *hdmirx_buf; + struct vb2_v4l2_buffer *vbuf; + struct hdmirx_stream *stream; + struct vb2_queue *queue; + unsigned long flags; + unsigned int i; + + vbuf = to_vb2_v4l2_buffer(vb); + hdmirx_buf = container_of(vbuf, struct hdmirx_buffer, vb); + queue = vb->vb2_queue; + stream = vb2_get_drv_priv(queue); + pixm = &stream->pixm; + out_finfo = stream->out_finfo; + + memset(hdmirx_buf->buff_addr, 0, sizeof(hdmirx_buf->buff_addr)); + + /* + * If mplanes > 1, every c-plane has its own m-plane, + * otherwise, multiple c-planes are in the same m-plane + */ + for (i = 0; i < out_finfo->mem_planes; i++) + hdmirx_buf->buff_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i); + + if (out_finfo->mem_planes == 1) { + if (out_finfo->comp_planes == 1) { + hdmirx_buf->buff_addr[HDMIRX_PLANE_CBCR] = + hdmirx_buf->buff_addr[HDMIRX_PLANE_Y]; + } else { + for (i = 0; i < out_finfo->comp_planes - 1; i++) + hdmirx_buf->buff_addr[i + 1] = + hdmirx_buf->buff_addr[i] + + pixm->plane_fmt[i].bytesperline * + pixm->height; + } + } + + spin_lock_irqsave(&stream->vbq_lock, flags); + list_add_tail(&hdmirx_buf->queue, &stream->buf_head); + spin_unlock_irqrestore(&stream->vbq_lock, flags); +} + +static void return_all_buffers(struct hdmirx_stream *stream, + enum vb2_buffer_state state) +{ + struct hdmirx_buffer *buf, *tmp; + unsigned long flags; + + spin_lock_irqsave(&stream->vbq_lock, flags); + if (stream->curr_buf) + list_add_tail(&stream->curr_buf->queue, &stream->buf_head); + if (stream->next_buf && stream->next_buf != stream->curr_buf) + list_add_tail(&stream->next_buf->queue, &stream->buf_head); + stream->curr_buf = NULL; + stream->next_buf = NULL; + + list_for_each_entry_safe(buf, tmp, &stream->buf_head, queue) { + list_del(&buf->queue); + vb2_buffer_done(&buf->vb.vb2_buf, state); + } + spin_unlock_irqrestore(&stream->vbq_lock, flags); +} + +static void hdmirx_stop_streaming(struct vb2_queue *queue) +{ + struct hdmirx_stream *stream = vb2_get_drv_priv(queue); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + int ret; + + v4l2_dbg(1, debug, v4l2_dev, "stream start stopping\n"); + mutex_lock(&hdmirx_dev->stream_lock); + WRITE_ONCE(stream->stopping, true); + + /* wait last irq to return the buffer */ + ret = wait_event_timeout(stream->wq_stopped, !stream->stopping, + msecs_to_jiffies(500)); + if (!ret) + v4l2_dbg(1, debug, v4l2_dev, "%s: timeout waiting last irq\n", + __func__); + + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, HDMIRX_DMA_EN, 0); + return_all_buffers(stream, VB2_BUF_STATE_ERROR); + mutex_unlock(&hdmirx_dev->stream_lock); + v4l2_dbg(1, debug, v4l2_dev, "stream stopping finished\n"); +} + +static int hdmirx_start_streaming(struct vb2_queue *queue, unsigned int count) +{ + struct hdmirx_stream *stream = vb2_get_drv_priv(queue); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_dv_timings timings = hdmirx_dev->timings; + struct v4l2_bt_timings *bt = &timings.bt; + unsigned long lock_flags = 0; + int line_flag; + + mutex_lock(&hdmirx_dev->stream_lock); + stream->frame_idx = 0; + stream->line_flag_int_cnt = 0; + stream->curr_buf = NULL; + stream->next_buf = NULL; + stream->irq_stat = 0; + + WRITE_ONCE(stream->stopping, false); + + spin_lock_irqsave(&stream->vbq_lock, lock_flags); + if (!stream->curr_buf) { + if (!list_empty(&stream->buf_head)) { + stream->curr_buf = list_first_entry(&stream->buf_head, + struct hdmirx_buffer, + queue); + list_del(&stream->curr_buf->queue); + } else { + stream->curr_buf = NULL; + } + } + spin_unlock_irqrestore(&stream->vbq_lock, lock_flags); + + if (!stream->curr_buf) { + mutex_unlock(&hdmirx_dev->stream_lock); + return -ENOMEM; + } + + v4l2_dbg(2, debug, v4l2_dev, + "%s: start_stream cur_buf y_addr:%#x, uv_addr:%#x\n", + __func__, stream->curr_buf->buff_addr[HDMIRX_PLANE_Y], + stream->curr_buf->buff_addr[HDMIRX_PLANE_CBCR]); + hdmirx_writel(hdmirx_dev, DMA_CONFIG2, + stream->curr_buf->buff_addr[HDMIRX_PLANE_Y]); + hdmirx_writel(hdmirx_dev, DMA_CONFIG3, + stream->curr_buf->buff_addr[HDMIRX_PLANE_CBCR]); + + if (bt->height) { + if (bt->interlaced == V4L2_DV_INTERLACED) + line_flag = bt->height / 4; + else + line_flag = bt->height / 2; + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG7, + LINE_FLAG_NUM_MASK, + LINE_FLAG_NUM(line_flag)); + } else { + v4l2_err(v4l2_dev, "invalid BT timing height=%d\n", bt->height); + } + + hdmirx_writel(hdmirx_dev, DMA_CONFIG5, 0xffffffff); + hdmirx_writel(hdmirx_dev, CED_DYN_CONTROL, 0x1); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG4, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, HDMIRX_DMA_EN, HDMIRX_DMA_EN); + v4l2_dbg(1, debug, v4l2_dev, "%s: enable dma", __func__); + mutex_unlock(&hdmirx_dev->stream_lock); + + return 0; +} + +/* vb2 queue */ +static const struct vb2_ops hdmirx_vb2_ops = { + .queue_setup = hdmirx_queue_setup, + .buf_queue = hdmirx_buf_queue, + .stop_streaming = hdmirx_stop_streaming, + .start_streaming = hdmirx_start_streaming, +}; + +static int hdmirx_init_vb2_queue(struct vb2_queue *q, + struct hdmirx_stream *stream, + enum v4l2_buf_type buf_type) +{ + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + + q->type = buf_type; + q->io_modes = VB2_MMAP | VB2_DMABUF; + q->drv_priv = stream; + q->ops = &hdmirx_vb2_ops; + q->mem_ops = &vb2_dma_contig_memops; + q->buf_struct_size = sizeof(struct hdmirx_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->lock = &stream->vlock; + q->dev = hdmirx_dev->dev; + q->min_queued_buffers = 1; + + return vb2_queue_init(q); +} + +/* video device */ +static const struct v4l2_ioctl_ops hdmirx_v4l2_ioctl_ops = { + .vidioc_querycap = hdmirx_querycap, + .vidioc_try_fmt_vid_cap_mplane = hdmirx_g_fmt_vid_cap_mplane, + .vidioc_s_fmt_vid_cap_mplane = hdmirx_s_fmt_vid_cap_mplane, + .vidioc_g_fmt_vid_cap_mplane = hdmirx_g_fmt_vid_cap_mplane, + .vidioc_enum_fmt_vid_cap = hdmirx_enum_fmt_vid_cap_mplane, + + .vidioc_s_dv_timings = hdmirx_s_dv_timings, + .vidioc_g_dv_timings = hdmirx_g_dv_timings, + .vidioc_enum_dv_timings = hdmirx_enum_dv_timings, + .vidioc_query_dv_timings = hdmirx_query_dv_timings, + .vidioc_dv_timings_cap = hdmirx_dv_timings_cap, + .vidioc_enum_input = hdmirx_enum_input, + .vidioc_g_input = hdmirx_get_input, + .vidioc_s_input = hdmirx_set_input, + .vidioc_g_edid = hdmirx_get_edid, + .vidioc_s_edid = hdmirx_set_edid, + .vidioc_g_parm = hdmirx_g_parm, + + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = hdmirx_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static const struct v4l2_file_operations hdmirx_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .unlocked_ioctl = video_ioctl2, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, +}; + +static int hdmirx_register_stream_vdev(struct hdmirx_stream *stream) +{ + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct video_device *vdev = &stream->vdev; + int ret; + + strscpy(vdev->name, "stream_hdmirx", sizeof(vdev->name)); + INIT_LIST_HEAD(&stream->buf_head); + spin_lock_init(&stream->vbq_lock); + mutex_init(&stream->vlock); + init_waitqueue_head(&stream->wq_stopped); + stream->curr_buf = NULL; + stream->next_buf = NULL; + + vdev->ioctl_ops = &hdmirx_v4l2_ioctl_ops; + vdev->release = video_device_release_empty; + vdev->fops = &hdmirx_fops; + vdev->minor = -1; + vdev->v4l2_dev = v4l2_dev; + vdev->lock = &stream->vlock; + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | + V4L2_CAP_STREAMING; + vdev->vfl_dir = VFL_DIR_RX; + + video_set_drvdata(vdev, stream); + + hdmirx_init_vb2_queue(&stream->buf_queue, stream, + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE); + vdev->queue = &stream->buf_queue; + + ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); + if (ret < 0) { + v4l2_err(v4l2_dev, "video_register_device failed: %d\n", ret); + return ret; + } + + return 0; +} + +static void process_signal_change(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, HDMIRX_DMA_EN, 0); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG4, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN, 0); + hdmirx_reset_dma(hdmirx_dev); + queue_delayed_work(system_unbound_wq, + &hdmirx_dev->delayed_work_res_change, + msecs_to_jiffies(50)); +} + +static void avpunit_0_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + if (status & (CED_DYN_CNT_CH2_IRQ | + CED_DYN_CNT_CH1_IRQ | + CED_DYN_CNT_CH0_IRQ)) { + process_signal_change(hdmirx_dev); + v4l2_dbg(2, debug, v4l2_dev, "%s: avp0_st:%#x\n", + __func__, status); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, AVPUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_writel(hdmirx_dev, AVPUNIT_0_INT_FORCE, 0x0); +} + +static void avpunit_1_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + if (status & DEFRAMER_VSYNC_THR_REACHED_IRQ) { + v4l2_dbg(2, debug, v4l2_dev, + "Vertical Sync threshold reached interrupt %#x", status); + hdmirx_update_bits(hdmirx_dev, AVPUNIT_1_INT_MASK_N, + DEFRAMER_VSYNC_THR_REACHED_MASK_N, 0); + *handled = true; + } +} + +static void mainunit_0_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(2, debug, v4l2_dev, "mu0_st:%#x\n", status); + if (status & TIMER_BASE_LOCKED_IRQ) { + hdmirx_update_bits(hdmirx_dev, MAINUNIT_0_INT_MASK_N, + TIMER_BASE_LOCKED_IRQ, 0); + complete(&hdmirx_dev->timer_base_lock); + *handled = true; + } + + if (status & TMDSQPCLK_OFF_CHG) { + process_signal_change(hdmirx_dev); + v4l2_dbg(2, debug, v4l2_dev, "%s: TMDSQPCLK_OFF_CHG\n", __func__); + *handled = true; + } + + if (status & TMDSQPCLK_LOCKED_CHG) { + process_signal_change(hdmirx_dev); + v4l2_dbg(2, debug, v4l2_dev, "%s: TMDSQPCLK_LOCKED_CHG\n", __func__); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_writel(hdmirx_dev, MAINUNIT_0_INT_FORCE, 0x0); +} + +static void mainunit_2_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(2, debug, v4l2_dev, "mu2_st:%#x\n", status); + if (status & PHYCREG_CR_WRITE_DONE) { + hdmirx_update_bits(hdmirx_dev, MAINUNIT_2_INT_MASK_N, + PHYCREG_CR_WRITE_DONE, 0); + complete(&hdmirx_dev->cr_write_done); + *handled = true; + } + + if (status & TMDSVALID_STABLE_CHG) { + process_signal_change(hdmirx_dev); + v4l2_dbg(2, debug, v4l2_dev, "%s: TMDSVALID_STABLE_CHG\n", __func__); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + hdmirx_writel(hdmirx_dev, MAINUNIT_2_INT_FORCE, 0x0); +} + +static void pkt_2_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(2, debug, v4l2_dev, "%s: pk2_st:%#x\n", __func__, status); + if (status & PKTDEC_AVIIF_RCV_IRQ) { + hdmirx_update_bits(hdmirx_dev, PKT_2_INT_MASK_N, + PKTDEC_AVIIF_RCV_IRQ, 0); + complete(&hdmirx_dev->avi_pkt_rcv); + v4l2_dbg(2, debug, v4l2_dev, "%s: AVIIF_RCV_IRQ\n", __func__); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, PKT_2_INT_CLEAR, 0xffffffff); +} + +static void scdc_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(2, debug, v4l2_dev, "%s: scdc_st:%#x\n", __func__, status); + if (status & SCDCTMDSCCFG_CHG) { + hdmirx_tmds_clk_ratio_config(hdmirx_dev); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, SCDC_INT_CLEAR, 0xffffffff); +} + +static irqreturn_t hdmirx_hdmi_irq_handler(int irq, void *dev_id) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_id; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 mu0_st, mu2_st, pk2_st, scdc_st, avp1_st, avp0_st; + u32 mu0_mask, mu2_mask, pk2_mask, scdc_mask, avp1_msk, avp0_msk; + bool handled = false; + + mu0_mask = hdmirx_readl(hdmirx_dev, MAINUNIT_0_INT_MASK_N); + mu2_mask = hdmirx_readl(hdmirx_dev, MAINUNIT_2_INT_MASK_N); + pk2_mask = hdmirx_readl(hdmirx_dev, PKT_2_INT_MASK_N); + scdc_mask = hdmirx_readl(hdmirx_dev, SCDC_INT_MASK_N); + mu0_st = hdmirx_readl(hdmirx_dev, MAINUNIT_0_INT_STATUS); + mu2_st = hdmirx_readl(hdmirx_dev, MAINUNIT_2_INT_STATUS); + pk2_st = hdmirx_readl(hdmirx_dev, PKT_2_INT_STATUS); + scdc_st = hdmirx_readl(hdmirx_dev, SCDC_INT_STATUS); + avp0_st = hdmirx_readl(hdmirx_dev, AVPUNIT_0_INT_STATUS); + avp1_st = hdmirx_readl(hdmirx_dev, AVPUNIT_1_INT_STATUS); + avp0_msk = hdmirx_readl(hdmirx_dev, AVPUNIT_0_INT_MASK_N); + avp1_msk = hdmirx_readl(hdmirx_dev, AVPUNIT_1_INT_MASK_N); + mu0_st &= mu0_mask; + mu2_st &= mu2_mask; + pk2_st &= pk2_mask; + avp1_st &= avp1_msk; + avp0_st &= avp0_msk; + scdc_st &= scdc_mask; + + if (avp0_st) + avpunit_0_int_handler(hdmirx_dev, avp0_st, &handled); + if (avp1_st) + avpunit_1_int_handler(hdmirx_dev, avp1_st, &handled); + if (mu0_st) + mainunit_0_int_handler(hdmirx_dev, mu0_st, &handled); + if (mu2_st) + mainunit_2_int_handler(hdmirx_dev, mu2_st, &handled); + if (pk2_st) + pkt_2_int_handler(hdmirx_dev, pk2_st, &handled); + if (scdc_st) + scdc_int_handler(hdmirx_dev, scdc_st, &handled); + + if (!handled) { + v4l2_dbg(2, debug, v4l2_dev, "%s: hdmi irq not handled", __func__); + v4l2_dbg(2, debug, v4l2_dev, + "avp0:%#x, avp1:%#x, mu0:%#x, mu2:%#x, pk2:%#x, scdc:%#x\n", + avp0_st, avp1_st, mu0_st, mu2_st, pk2_st, scdc_st); + } + + v4l2_dbg(2, debug, v4l2_dev, "%s: en_fiq", __func__); + + return handled ? IRQ_HANDLED : IRQ_NONE; +} + +static void hdmirx_vb_done(struct hdmirx_stream *stream, + struct vb2_v4l2_buffer *vb_done) +{ + const struct v4l2_format_info *finfo = stream->out_finfo; + u32 i; + + /* Dequeue a filled buffer */ + for (i = 0; i < finfo->mem_planes; i++) { + vb2_set_plane_payload(&vb_done->vb2_buf, i, + stream->pixm.plane_fmt[i].sizeimage); + } + + vb_done->vb2_buf.timestamp = ktime_get_ns(); + vb2_buffer_done(&vb_done->vb2_buf, VB2_BUF_STATE_DONE); +} + +static void dma_idle_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + bool *handled) +{ + struct hdmirx_stream *stream = &hdmirx_dev->stream; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_dv_timings timings = hdmirx_dev->timings; + struct v4l2_bt_timings *bt = &timings.bt; + struct vb2_v4l2_buffer *vb_done = NULL; + + if (!(stream->irq_stat) && !(stream->irq_stat & LINE_FLAG_INT_EN)) + v4l2_dbg(1, debug, v4l2_dev, + "%s: last time have no line_flag_irq\n", __func__); + + /* skip first frames that are expected to come out zeroed from DMA */ + if (stream->line_flag_int_cnt <= FILTER_FRAME_CNT) + goto DMA_IDLE_OUT; + + if (bt->interlaced != V4L2_DV_INTERLACED || + !(stream->line_flag_int_cnt % 2)) { + if (stream->next_buf) { + if (stream->curr_buf) + vb_done = &stream->curr_buf->vb; + + if (vb_done) { + vb_done->vb2_buf.timestamp = ktime_get_ns(); + vb_done->sequence = stream->frame_idx; + + if (bt->interlaced) + vb_done->field = V4L2_FIELD_INTERLACED_TB; + else + vb_done->field = V4L2_FIELD_NONE; + + hdmirx_vb_done(stream, vb_done); + stream->frame_idx++; + if (stream->frame_idx == 30) + v4l2_dbg(1, debug, v4l2_dev, + "rcv frames\n"); + } + + stream->curr_buf = NULL; + if (stream->next_buf) { + stream->curr_buf = stream->next_buf; + stream->next_buf = NULL; + } + } else { + v4l2_dbg(3, debug, v4l2_dev, + "%s: next_buf NULL, skip vb_done\n", __func__); + } + } + +DMA_IDLE_OUT: + *handled = true; +} + +static void line_flag_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + bool *handled) +{ + struct hdmirx_stream *stream = &hdmirx_dev->stream; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_dv_timings timings = hdmirx_dev->timings; + struct v4l2_bt_timings *bt = &timings.bt; + u32 dma_cfg6; + + stream->line_flag_int_cnt++; + if (!(stream->irq_stat) && !(stream->irq_stat & HDMIRX_DMA_IDLE_INT)) + v4l2_dbg(1, debug, v4l2_dev, + "%s: last have no dma_idle_irq\n", __func__); + dma_cfg6 = hdmirx_readl(hdmirx_dev, DMA_CONFIG6); + if (!(dma_cfg6 & HDMIRX_DMA_EN)) { + v4l2_dbg(2, debug, v4l2_dev, "%s: dma not on\n", __func__); + goto LINE_FLAG_OUT; + } + + if (stream->line_flag_int_cnt <= FILTER_FRAME_CNT) + goto LINE_FLAG_OUT; + + if (bt->interlaced != V4L2_DV_INTERLACED || + !(stream->line_flag_int_cnt % 2)) { + if (!stream->next_buf) { + spin_lock(&stream->vbq_lock); + if (!list_empty(&stream->buf_head)) { + stream->next_buf = list_first_entry(&stream->buf_head, + struct hdmirx_buffer, + queue); + list_del(&stream->next_buf->queue); + } else { + stream->next_buf = NULL; + } + spin_unlock(&stream->vbq_lock); + + if (stream->next_buf) { + hdmirx_writel(hdmirx_dev, DMA_CONFIG2, + stream->next_buf->buff_addr[HDMIRX_PLANE_Y]); + hdmirx_writel(hdmirx_dev, DMA_CONFIG3, + stream->next_buf->buff_addr[HDMIRX_PLANE_CBCR]); + } else { + v4l2_dbg(3, debug, v4l2_dev, + "%s: no buffer is available\n", __func__); + } + } + } else { + v4l2_dbg(3, debug, v4l2_dev, "%s: interlace:%d, line_flag_int_cnt:%d\n", + __func__, bt->interlaced, stream->line_flag_int_cnt); + } + +LINE_FLAG_OUT: + *handled = true; +} + +static irqreturn_t hdmirx_dma_irq_handler(int irq, void *dev_id) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_id; + struct hdmirx_stream *stream = &hdmirx_dev->stream; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 dma_stat1, dma_stat13; + bool handled = false; + + dma_stat1 = hdmirx_readl(hdmirx_dev, DMA_STATUS1); + dma_stat13 = hdmirx_readl(hdmirx_dev, DMA_STATUS13); + v4l2_dbg(3, debug, v4l2_dev, "dma_irq st1:%#x, st13:%d\n", + dma_stat1, dma_stat13); + + if (READ_ONCE(stream->stopping)) { + v4l2_dbg(1, debug, v4l2_dev, "%s: stop stream\n", __func__); + hdmirx_writel(hdmirx_dev, DMA_CONFIG5, 0xffffffff); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG4, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN, 0); + WRITE_ONCE(stream->stopping, false); + wake_up(&stream->wq_stopped); + return IRQ_HANDLED; + } + + if (dma_stat1 & HDMIRX_DMA_IDLE_INT) + dma_idle_int_handler(hdmirx_dev, &handled); + + if (dma_stat1 & LINE_FLAG_INT_EN) + line_flag_int_handler(hdmirx_dev, &handled); + + if (!handled) + v4l2_dbg(3, debug, v4l2_dev, + "%s: dma irq not handled, dma_stat1:%#x\n", + __func__, dma_stat1); + + stream->irq_stat = dma_stat1; + hdmirx_writel(hdmirx_dev, DMA_CONFIG5, 0xffffffff); + + return IRQ_HANDLED; +} + +static int hdmirx_wait_signal_lock(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 mu_status, scdc_status, dma_st10, cmu_st; + u32 i; + + for (i = 0; i < 300; i++) { + mu_status = hdmirx_readl(hdmirx_dev, MAINUNIT_STATUS); + scdc_status = hdmirx_readl(hdmirx_dev, SCDC_REGBANK_STATUS3); + dma_st10 = hdmirx_readl(hdmirx_dev, DMA_STATUS10); + cmu_st = hdmirx_readl(hdmirx_dev, CMU_STATUS); + + if ((mu_status & TMDSVALID_STABLE_ST) && + (dma_st10 & HDMIRX_LOCK) && + (cmu_st & TMDSQPCLK_LOCKED_ST)) + break; + + if (!tx_5v_power_present(hdmirx_dev)) { + v4l2_dbg(1, debug, v4l2_dev, + "%s: HDMI pull out, return\n", __func__); + return -1; + } + + hdmirx_tmds_clk_ratio_config(hdmirx_dev); + } + + if (i == 300) { + v4l2_err(v4l2_dev, "%s: signal not lock, tmds_clk_ratio:%d\n", + __func__, hdmirx_dev->tmds_clk_ratio); + v4l2_err(v4l2_dev, "%s: mu_st:%#x, scdc_st:%#x, dma_st10:%#x\n", + __func__, mu_status, scdc_status, dma_st10); + return -1; + } + + v4l2_dbg(1, debug, v4l2_dev, "%s: signal lock ok, i:%d\n", __func__, i); + hdmirx_writel(hdmirx_dev, GLOBAL_SWRESET_REQUEST, DATAPATH_SWRESETREQ); + + reinit_completion(&hdmirx_dev->avi_pkt_rcv); + hdmirx_clear_interrupt(hdmirx_dev, PKT_2_INT_CLEAR, 0xffffffff); + hdmirx_update_bits(hdmirx_dev, PKT_2_INT_MASK_N, + PKTDEC_AVIIF_RCV_IRQ, PKTDEC_AVIIF_RCV_IRQ); + + if (!wait_for_completion_timeout(&hdmirx_dev->avi_pkt_rcv, + msecs_to_jiffies(300))) { + v4l2_err(v4l2_dev, "%s wait avi_pkt_rcv failed\n", __func__); + hdmirx_update_bits(hdmirx_dev, PKT_2_INT_MASK_N, + PKTDEC_AVIIF_RCV_IRQ, 0); + } + + msleep(50); + hdmirx_format_change(hdmirx_dev); + + return 0; +} + +static void hdmirx_plugin(struct snps_hdmirx_dev *hdmirx_dev) +{ + if (hdmirx_dev->plugged) + return; + + hdmirx_submodule_init(hdmirx_dev); + hdmirx_update_bits(hdmirx_dev, SCDC_CONFIG, POWERPROVIDED, + POWERPROVIDED); + hdmirx_phy_config(hdmirx_dev); + hdmirx_interrupts_setup(hdmirx_dev, true); + + hdmirx_dev->plugged = true; +} + +static void hdmirx_delayed_work_hotplug(struct work_struct *work) +{ + struct snps_hdmirx_dev *hdmirx_dev; + bool plugin; + + hdmirx_dev = container_of(work, struct snps_hdmirx_dev, + delayed_work_hotplug.work); + + mutex_lock(&hdmirx_dev->work_lock); + plugin = tx_5v_power_present(hdmirx_dev); + v4l2_ctrl_s_ctrl(hdmirx_dev->detect_tx_5v_ctrl, plugin); + v4l2_dbg(1, debug, &hdmirx_dev->v4l2_dev, "%s: plugin:%d\n", + __func__, plugin); + + hdmirx_plugout(hdmirx_dev); + + if (plugin) + hdmirx_plugin(hdmirx_dev); + + mutex_unlock(&hdmirx_dev->work_lock); +} + +static void hdmirx_delayed_work_res_change(struct work_struct *work) +{ + struct snps_hdmirx_dev *hdmirx_dev; + bool plugin; + + hdmirx_dev = container_of(work, struct snps_hdmirx_dev, + delayed_work_res_change.work); + + mutex_lock(&hdmirx_dev->work_lock); + plugin = tx_5v_power_present(hdmirx_dev); + v4l2_dbg(1, debug, &hdmirx_dev->v4l2_dev, "%s: plugin:%d\n", + __func__, plugin); + if (plugin) { + hdmirx_interrupts_setup(hdmirx_dev, false); + hdmirx_submodule_init(hdmirx_dev); + hdmirx_update_bits(hdmirx_dev, SCDC_CONFIG, POWERPROVIDED, + POWERPROVIDED); + hdmirx_phy_config(hdmirx_dev); + + if (hdmirx_wait_signal_lock(hdmirx_dev)) { + hdmirx_plugout(hdmirx_dev); + queue_delayed_work(system_unbound_wq, + &hdmirx_dev->delayed_work_hotplug, + msecs_to_jiffies(200)); + } else { + hdmirx_dma_config(hdmirx_dev); + hdmirx_interrupts_setup(hdmirx_dev, true); + } + } + mutex_unlock(&hdmirx_dev->work_lock); +} + +static irqreturn_t hdmirx_5v_det_irq_handler(int irq, void *dev_id) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_id; + u32 val; + + val = gpiod_get_value(hdmirx_dev->detect_5v_gpio); + v4l2_dbg(3, debug, &hdmirx_dev->v4l2_dev, "%s: 5v:%d\n", __func__, val); + + queue_delayed_work(system_unbound_wq, + &hdmirx_dev->delayed_work_hotplug, + msecs_to_jiffies(10)); + + return IRQ_HANDLED; +} + +static const struct hdmirx_cec_ops hdmirx_cec_ops = { + .write = hdmirx_writel, + .read = hdmirx_readl, +}; + +static void devm_hdmirx_of_reserved_mem_device_release(void *dev) +{ + of_reserved_mem_device_release(dev); +} + +static int hdmirx_parse_dt(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct device *dev = hdmirx_dev->dev; + int ret; + + hdmirx_dev->num_clks = devm_clk_bulk_get_all(dev, &hdmirx_dev->clks); + if (hdmirx_dev->num_clks < 1) + return -ENODEV; + + hdmirx_dev->resets[HDMIRX_RST_A].id = "axi"; + hdmirx_dev->resets[HDMIRX_RST_P].id = "apb"; + hdmirx_dev->resets[HDMIRX_RST_REF].id = "ref"; + hdmirx_dev->resets[HDMIRX_RST_BIU].id = "biu"; + + ret = devm_reset_control_bulk_get_exclusive(dev, HDMIRX_NUM_RST, + hdmirx_dev->resets); + if (ret < 0) { + dev_err(dev, "failed to get reset controls\n"); + return ret; + } + + hdmirx_dev->detect_5v_gpio = + devm_gpiod_get_optional(dev, "hpd", GPIOD_IN); + + if (IS_ERR(hdmirx_dev->detect_5v_gpio)) { + dev_err(dev, "failed to get hdmirx hot plug detection gpio\n"); + return PTR_ERR(hdmirx_dev->detect_5v_gpio); + } + + hdmirx_dev->grf = syscon_regmap_lookup_by_phandle(dev->of_node, + "rockchip,grf"); + if (IS_ERR(hdmirx_dev->grf)) { + dev_err(dev, "failed to get rockchip,grf\n"); + return PTR_ERR(hdmirx_dev->grf); + } + + hdmirx_dev->vo1_grf = syscon_regmap_lookup_by_phandle(dev->of_node, + "rockchip,vo1-grf"); + if (IS_ERR(hdmirx_dev->vo1_grf)) { + dev_err(dev, "failed to get rockchip,vo1-grf\n"); + return PTR_ERR(hdmirx_dev->vo1_grf); + } + + if (!device_property_read_bool(dev, "hpd-is-active-low")) + hdmirx_dev->hpd_trigger_level_high = true; + + ret = of_reserved_mem_device_init(dev); + if (ret) { + dev_warn(dev, "no reserved memory for HDMIRX, use default CMA\n"); + } else { + ret = devm_add_action_or_reset(dev, + devm_hdmirx_of_reserved_mem_device_release, + dev); + if (ret) + return ret; + } + + return 0; +} + +static void hdmirx_disable_all_interrupts(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_writel(hdmirx_dev, MAINUNIT_0_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, MAINUNIT_1_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, MAINUNIT_2_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, AVPUNIT_0_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, AVPUNIT_1_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, PKT_0_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, PKT_1_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, PKT_2_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, SCDC_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, CEC_INT_MASK_N, 0); + + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_1_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, AVPUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, AVPUNIT_1_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, PKT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, PKT_1_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, PKT_2_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, SCDC_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, HDCP_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, HDCP_1_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, CEC_INT_CLEAR, 0xffffffff); +} + +static void hdmirx_init(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, PHY_RESET | PHY_PDDQ, 0); + + regmap_write(hdmirx_dev->vo1_grf, VO1_GRF_VO1_CON2, + (HDMIRX_SDAIN_MSK | HDMIRX_SCLIN_MSK) | + ((HDMIRX_SDAIN_MSK | HDMIRX_SCLIN_MSK) << 16)); + /* + * Some interrupts are enabled by default, so we disable + * all interrupts and clear interrupts status first. + */ + hdmirx_disable_all_interrupts(hdmirx_dev); +} + +/* hdmi-4k-300mhz EDID produced by v4l2-ctl tool */ +static u8 __maybe_unused edid_default[] = { + 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, + 0x31, 0xd8, 0x34, 0x12, 0x00, 0x00, 0x00, 0x00, + 0x22, 0x1a, 0x01, 0x03, 0x80, 0x60, 0x36, 0x78, + 0x0f, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, + 0x0f, 0x50, 0x54, 0x2f, 0xcf, 0x00, 0x31, 0x59, + 0x45, 0x59, 0x81, 0x80, 0x81, 0x40, 0x90, 0x40, + 0x95, 0x00, 0xa9, 0x40, 0xb3, 0x00, 0x04, 0x74, + 0x00, 0x30, 0xf2, 0x70, 0x5a, 0x80, 0xb0, 0x58, + 0x8a, 0x00, 0xc0, 0x1c, 0x32, 0x00, 0x00, 0x1e, + 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, 0x55, 0x18, + 0x87, 0x1e, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, + 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x68, + 0x64, 0x6d, 0x69, 0x2d, 0x34, 0x6b, 0x2d, 0x33, + 0x30, 0x30, 0x0a, 0x20, 0x00, 0x00, 0x00, 0x10, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xc5, + + 0x02, 0x03, 0x40, 0xf1, 0x4f, 0x5f, 0x5e, 0x5d, + 0x10, 0x1f, 0x04, 0x13, 0x22, 0x21, 0x20, 0x05, + 0x14, 0x02, 0x11, 0x01, 0x23, 0x09, 0x07, 0x07, + 0x83, 0x01, 0x00, 0x00, 0x6d, 0x03, 0x0c, 0x00, + 0x10, 0x00, 0x00, 0x3c, 0x21, 0x00, 0x60, 0x01, + 0x02, 0x03, 0x67, 0xd8, 0x5d, 0xc4, 0x01, 0x00, + 0x00, 0x00, 0xe2, 0x00, 0xca, 0xe3, 0x05, 0x00, + 0x00, 0xe3, 0x06, 0x01, 0x00, 0xe2, 0x0d, 0x5f, + 0xa3, 0x66, 0x00, 0xa0, 0xf0, 0x70, 0x1f, 0x80, + 0x30, 0x20, 0x35, 0x00, 0xc0, 0x1c, 0x32, 0x00, + 0x00, 0x1e, 0x1a, 0x36, 0x80, 0xa0, 0x70, 0x38, + 0x1f, 0x40, 0x30, 0x20, 0x35, 0x00, 0xc0, 0x1c, + 0x32, 0x00, 0x00, 0x1a, 0x1a, 0x1d, 0x00, 0x80, + 0x51, 0xd0, 0x1c, 0x20, 0x40, 0x80, 0x35, 0x00, + 0xc0, 0x1c, 0x32, 0x00, 0x00, 0x1c, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa1, +}; + +static void hdmirx_load_default_edid(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_edid def_edid = {}; + + hdmirx_hpd_ctrl(hdmirx_dev, false); + + if (!IS_ENABLED(CONFIG_VIDEO_SYNOPSYS_HDMIRX_LOAD_DEFAULT_EDID)) + return; + + /* disable hpd and write edid */ + def_edid.blocks = sizeof(edid_default) / EDID_BLOCK_SIZE; + def_edid.edid = edid_default; + + hdmirx_write_edid(hdmirx_dev, &def_edid); + hdmirx_hpd_ctrl(hdmirx_dev, true); +} + +static int hdmirx_disable(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + hdmirx_plugout(hdmirx_dev); + hdmirx_hpd_ctrl(hdmirx_dev, false); + + clk_bulk_disable_unprepare(hdmirx_dev->num_clks, hdmirx_dev->clks); + + v4l2_dbg(2, debug, v4l2_dev, "%s: suspend\n", __func__); + + return pinctrl_pm_select_sleep_state(dev); +} + +static int hdmirx_enable(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + int ret; + + v4l2_dbg(2, debug, v4l2_dev, "%s: resume\n", __func__); + ret = pinctrl_pm_select_default_state(dev); + if (ret < 0) + return ret; + + ret = clk_bulk_prepare_enable(hdmirx_dev->num_clks, hdmirx_dev->clks); + if (ret) { + dev_err(dev, "failed to enable hdmirx bulk clks: %d\n", ret); + return ret; + } + + reset_control_bulk_assert(HDMIRX_NUM_RST, hdmirx_dev->resets); + usleep_range(150, 160); + reset_control_bulk_deassert(HDMIRX_NUM_RST, hdmirx_dev->resets); + usleep_range(150, 160); + + return 0; +} + +static void hdmirx_disable_irq(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + + disable_irq(hdmirx_dev->det_irq); + disable_irq(hdmirx_dev->dma_irq); + disable_irq(hdmirx_dev->hdmi_irq); + + cancel_delayed_work_sync(&hdmirx_dev->delayed_work_hotplug); + cancel_delayed_work_sync(&hdmirx_dev->delayed_work_res_change); +} + +static void hdmirx_enable_irq(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + + enable_irq(hdmirx_dev->hdmi_irq); + enable_irq(hdmirx_dev->dma_irq); + enable_irq(hdmirx_dev->det_irq); + + queue_delayed_work(system_unbound_wq, + &hdmirx_dev->delayed_work_hotplug, + msecs_to_jiffies(110)); +} + +static __maybe_unused int hdmirx_suspend(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + + hdmirx_disable_irq(dev); + + /* TODO store CEC HW state */ + disable_irq(hdmirx_dev->cec->irq); + + return hdmirx_disable(dev); +} + +static __maybe_unused int hdmirx_resume(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + int ret = hdmirx_enable(dev); + + if (ret) + return ret; + + if (hdmirx_dev->edid_blocks_written) { + hdmirx_write_edid_data(hdmirx_dev, hdmirx_dev->edid, + hdmirx_dev->edid_blocks_written); + hdmirx_hpd_ctrl(hdmirx_dev, true); + } + + /* TODO restore CEC HW state */ + enable_irq(hdmirx_dev->cec->irq); + + hdmirx_enable_irq(dev); + + return 0; +} + +static const struct dev_pm_ops snps_hdmirx_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(hdmirx_suspend, hdmirx_resume) +}; + +static int hdmirx_setup_irq(struct snps_hdmirx_dev *hdmirx_dev, + struct platform_device *pdev) +{ + struct device *dev = hdmirx_dev->dev; + int ret, irq; + + irq = platform_get_irq_byname(pdev, "hdmi"); + if (irq < 0) { + dev_err_probe(dev, irq, "failed to get hdmi irq\n"); + return irq; + } + + irq_set_status_flags(irq, IRQ_NOAUTOEN); + + hdmirx_dev->hdmi_irq = irq; + ret = devm_request_irq(dev, irq, hdmirx_hdmi_irq_handler, 0, + "rk_hdmirx-hdmi", hdmirx_dev); + if (ret) { + dev_err_probe(dev, ret, "failed to request hdmi irq\n"); + return ret; + } + + irq = platform_get_irq_byname(pdev, "dma"); + if (irq < 0) { + dev_err_probe(dev, irq, "failed to get dma irq\n"); + return irq; + } + + irq_set_status_flags(irq, IRQ_NOAUTOEN); + + hdmirx_dev->dma_irq = irq; + ret = devm_request_threaded_irq(dev, irq, NULL, hdmirx_dma_irq_handler, + IRQF_ONESHOT, "rk_hdmirx-dma", + hdmirx_dev); + if (ret) { + dev_err_probe(dev, ret, "failed to request dma irq\n"); + return ret; + } + + irq = gpiod_to_irq(hdmirx_dev->detect_5v_gpio); + if (irq < 0) { + dev_err_probe(dev, irq, "failed to get hdmirx-5v irq\n"); + return irq; + } + + irq_set_status_flags(irq, IRQ_NOAUTOEN); + + hdmirx_dev->det_irq = irq; + ret = devm_request_irq(dev, irq, hdmirx_5v_det_irq_handler, + IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, + "rk_hdmirx-5v", hdmirx_dev); + if (ret) { + dev_err_probe(dev, ret, "failed to request hdmirx-5v irq\n"); + return ret; + } + + return 0; +} + +static int hdmirx_register_cec(struct snps_hdmirx_dev *hdmirx_dev, + struct platform_device *pdev) +{ + struct device *dev = hdmirx_dev->dev; + struct hdmirx_cec_data cec_data; + int irq; + + irq = platform_get_irq_byname(pdev, "cec"); + if (irq < 0) { + dev_err_probe(dev, irq, "failed to get cec irq\n"); + return irq; + } + + cec_data.hdmirx = hdmirx_dev; + cec_data.dev = hdmirx_dev->dev; + cec_data.ops = &hdmirx_cec_ops; + cec_data.irq = irq; + + hdmirx_dev->cec = snps_hdmirx_cec_register(&cec_data); + if (IS_ERR(hdmirx_dev->cec)) + return dev_err_probe(dev, PTR_ERR(hdmirx_dev->cec), + "failed to register cec\n"); + + return 0; +} + +static int hdmirx_probe(struct platform_device *pdev) +{ + struct snps_hdmirx_dev *hdmirx_dev; + struct device *dev = &pdev->dev; + struct v4l2_ctrl_handler *hdl; + struct hdmirx_stream *stream; + struct v4l2_device *v4l2_dev; + int ret; + + hdmirx_dev = devm_kzalloc(dev, sizeof(*hdmirx_dev), GFP_KERNEL); + if (!hdmirx_dev) + return -ENOMEM; + + /* + * RK3588 HDMIRX SoC integration doesn't use IOMMU and can + * address only first 32bit of the physical address space. + */ + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); + if (ret) + return ret; + + hdmirx_dev->dev = dev; + dev_set_drvdata(dev, hdmirx_dev); + + ret = hdmirx_parse_dt(hdmirx_dev); + if (ret) + return ret; + + ret = hdmirx_setup_irq(hdmirx_dev, pdev); + if (ret) + return ret; + + hdmirx_dev->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(hdmirx_dev->regs)) + return dev_err_probe(dev, PTR_ERR(hdmirx_dev->regs), + "failed to remap regs resource\n"); + + mutex_init(&hdmirx_dev->stream_lock); + mutex_init(&hdmirx_dev->work_lock); + spin_lock_init(&hdmirx_dev->rst_lock); + + init_completion(&hdmirx_dev->cr_write_done); + init_completion(&hdmirx_dev->timer_base_lock); + init_completion(&hdmirx_dev->avi_pkt_rcv); + + INIT_DELAYED_WORK(&hdmirx_dev->delayed_work_hotplug, + hdmirx_delayed_work_hotplug); + INIT_DELAYED_WORK(&hdmirx_dev->delayed_work_res_change, + hdmirx_delayed_work_res_change); + + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_BGR24; + hdmirx_dev->timings = cea640x480; + + hdmirx_enable(dev); + hdmirx_init(hdmirx_dev); + + v4l2_dev = &hdmirx_dev->v4l2_dev; + strscpy(v4l2_dev->name, dev_name(dev), sizeof(v4l2_dev->name)); + + hdl = &hdmirx_dev->hdl; + v4l2_ctrl_handler_init(hdl, 3); + + hdmirx_dev->detect_tx_5v_ctrl = v4l2_ctrl_new_std(hdl, NULL, + V4L2_CID_DV_RX_POWER_PRESENT, + 0, 1, 0, 0); + + hdmirx_dev->rgb_range = v4l2_ctrl_new_std_menu(hdl, NULL, + V4L2_CID_DV_RX_RGB_RANGE, + V4L2_DV_RGB_RANGE_FULL, 0, + V4L2_DV_RGB_RANGE_AUTO); + + hdmirx_dev->rgb_range->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + hdmirx_dev->content_type = + v4l2_ctrl_new_std_menu(hdl, NULL, V4L2_CID_DV_RX_IT_CONTENT_TYPE, + V4L2_DV_IT_CONTENT_TYPE_NO_ITC, 0, + V4L2_DV_IT_CONTENT_TYPE_NO_ITC); + + if (hdl->error) { + ret = hdl->error; + dev_err_probe(dev, ret, "v4l2 ctrl handler init failed\n"); + goto err_pm; + } + hdmirx_dev->v4l2_dev.ctrl_handler = hdl; + + ret = v4l2_device_register(dev, &hdmirx_dev->v4l2_dev); + if (ret < 0) { + dev_err_probe(dev, ret, "v4l2 device registration failed\n"); + goto err_hdl; + } + + stream = &hdmirx_dev->stream; + stream->hdmirx_dev = hdmirx_dev; + ret = hdmirx_register_stream_vdev(stream); + if (ret < 0) { + dev_err_probe(dev, ret, "video device registration failed\n"); + goto err_unreg_v4l2_dev; + } + + ret = hdmirx_register_cec(hdmirx_dev, pdev); + if (ret) + goto err_unreg_video_dev; + + hdmirx_load_default_edid(hdmirx_dev); + + hdmirx_enable_irq(dev); + + hdmirx_dev->debugfs_dir = debugfs_create_dir(hdmirx_dev->v4l2_dev.name, + v4l2_debugfs_root()); + + hdmirx_dev->infoframes = v4l2_debugfs_if_alloc(hdmirx_dev->debugfs_dir, + V4L2_DEBUGFS_IF_AVI, hdmirx_dev, + hdmirx_debugfs_if_read); + + return 0; + +err_unreg_video_dev: + vb2_video_unregister_device(&hdmirx_dev->stream.vdev); +err_unreg_v4l2_dev: + v4l2_device_unregister(&hdmirx_dev->v4l2_dev); +err_hdl: + v4l2_ctrl_handler_free(&hdmirx_dev->hdl); +err_pm: + hdmirx_disable(dev); + + return ret; +} + +static void hdmirx_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + + v4l2_debugfs_if_free(hdmirx_dev->infoframes); + debugfs_remove_recursive(hdmirx_dev->debugfs_dir); + + snps_hdmirx_cec_unregister(hdmirx_dev->cec); + + hdmirx_disable_irq(dev); + + vb2_video_unregister_device(&hdmirx_dev->stream.vdev); + v4l2_ctrl_handler_free(&hdmirx_dev->hdl); + v4l2_device_unregister(&hdmirx_dev->v4l2_dev); + + /* touched by hdmirx_disable()->hdmirx_plugout() */ + hdmirx_dev->rgb_range = NULL; + hdmirx_dev->content_type = NULL; + + hdmirx_disable(dev); + + reset_control_bulk_assert(HDMIRX_NUM_RST, hdmirx_dev->resets); +} + +static const struct of_device_id hdmirx_id[] = { + { .compatible = "rockchip,rk3588-hdmirx-ctrler" }, + { } +}; +MODULE_DEVICE_TABLE(of, hdmirx_id); + +static struct platform_driver hdmirx_driver = { + .probe = hdmirx_probe, + .remove = hdmirx_remove, + .driver = { + .name = "snps_hdmirx", + .of_match_table = hdmirx_id, + .pm = &snps_hdmirx_pm_ops, + } +}; +module_platform_driver(hdmirx_driver); + +MODULE_DESCRIPTION("Synopsys HDMI Receiver Driver"); +MODULE_AUTHOR("Dingxian Wen <shawn.wen@rock-chips.com>"); +MODULE_AUTHOR("Shreeya Patel <shreeya.patel@collabora.com>"); +MODULE_AUTHOR("Dmitry Osipenko <dmitry.osipenko@collabora.com>"); +MODULE_LICENSE("GPL"); |