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Signed-off-by: Andrey Skvortsov --- drivers/media/i2c/gc2145.c | 117 ++++++++++++++++++++++++++++--------- 1 file changed, 90 insertions(+), 27 deletions(-) diff --git a/drivers/media/i2c/gc2145.c b/drivers/media/i2c/gc2145.c index bef7b0e056a8..9a70b8d504e1 100644 --- a/drivers/media/i2c/gc2145.c +++ b/drivers/media/i2c/gc2145.c @@ -39,6 +39,10 @@ #define GC2145_REG_ANALOG_MODE1 CCI_REG8(0x17) #define GC2145_REG_OUTPUT_FMT CCI_REG8(0x84) #define GC2145_REG_SYNC_MODE CCI_REG8(0x86) +#define GC2145_SYNC_MODE_VSYNC_POL BIT(0) +#define GC2145_SYNC_MODE_HSYNC_POL BIT(1) +#define GC2145_SYNC_MODE_OPCLK_POL BIT(2) +#define GC2145_SYNC_MODE_OPCLK_GATE BIT(3) #define GC2145_SYNC_MODE_COL_SWITCH BIT(4) #define GC2145_SYNC_MODE_ROW_SWITCH BIT(5) #define GC2145_REG_BYPASS_MODE CCI_REG8(0x89) @@ -53,6 +57,12 @@ #define GC2145_REG_GLOBAL_GAIN CCI_REG8(0xb0) #define GC2145_REG_CHIP_ID CCI_REG16(0xf0) #define GC2145_REG_PAD_IO CCI_REG8(0xf2) +#define GC2145_REG_PLL_MODE1 CCI_REG8(0xf7) +#define GC2145_REG_PLL_MODE2 CCI_REG8(0xf8) +#define GC2145_REG_CM_MODE CCI_REG8(0xf9) +#define GC2145_REG_CLK_DIV_MODE CCI_REG8(0xfa) +#define GC2145_REG_ANALOG_PWC CCI_REG8(0xfc) +#define GC2145_REG_PAD_IO CCI_REG8(0xf2) #define GC2145_REG_PAGE_SELECT CCI_REG8(0xfe) /* Page 3 */ #define GC2145_REG_DPHY_ANALOG_MODE1 CCI_REG8(0x01) @@ -598,6 +608,7 @@ struct gc2145 { struct v4l2_subdev sd; struct media_pad pad; + struct v4l2_fwnode_endpoint ep; /* the parsed DT endpoint info */ struct regmap *regmap; struct clk *xclk; @@ -612,6 +623,11 @@ struct gc2145 { const struct gc2145_mode *mode; }; +static inline bool gc2145_is_csi2(const struct gc2145 *gc2145) +{ + return gc2145->ep.bus_type == V4L2_MBUS_CSI2_DPHY; +} + static inline struct gc2145 *to_gc2145(struct v4l2_subdev *_sd) { return container_of(_sd, struct gc2145, sd); @@ -773,6 +789,38 @@ static int gc2145_set_pad_format(struct v4l2_subdev *sd, return 0; } +static int gc2145_config_dvp_mode(struct gc2145 *gc2145, + const struct gc2145_format *gc2145_format) +{ + int ret = 0; + u64 sync_mode; + int flags; + + flags = gc2145->ep.bus.parallel.flags; + + ret = cci_read(gc2145->regmap, GC2145_REG_SYNC_MODE, &sync_mode, NULL); + if (ret) + return ret; + + sync_mode &= ~(GC2145_SYNC_MODE_VSYNC_POL | + GC2145_SYNC_MODE_HSYNC_POL | + GC2145_SYNC_MODE_OPCLK_POL); + + if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) + sync_mode |= GC2145_SYNC_MODE_VSYNC_POL; + + if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) + sync_mode |= GC2145_SYNC_MODE_HSYNC_POL; + + if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) + sync_mode |= GC2145_SYNC_MODE_OPCLK_POL; + + cci_write(gc2145->regmap, GC2145_REG_SYNC_MODE, sync_mode, &ret); + cci_write(gc2145->regmap, GC2145_REG_PAD_IO, 0x0f, &ret); + + return ret; +} + static const struct cci_reg_sequence gc2145_common_mipi_regs[] = { {GC2145_REG_PAGE_SELECT, 0x03}, {GC2145_REG_DPHY_ANALOG_MODE1, GC2145_DPHY_MODE_PHY_CLK_EN | @@ -895,10 +943,13 @@ static int gc2145_start_streaming(struct gc2145 *gc2145, goto err_rpm_put; } - /* Perform MIPI specific configuration */ - ret = gc2145_config_mipi_mode(gc2145, gc2145_format); + /* Perform interface specific configuration */ + if (gc2145_is_csi2(gc2145)) + ret = gc2145_config_mipi_mode(gc2145, gc2145_format); + else + ret = gc2145_config_dvp_mode(gc2145, gc2145_format); if (ret) { - dev_err(&client->dev, "%s failed to write mipi conf\n", + dev_err(&client->dev, "%s failed to write interface conf\n", __func__); goto err_rpm_put; } @@ -924,6 +975,9 @@ static void gc2145_stop_streaming(struct gc2145 *gc2145) GC2145_CSI2_MODE_EN | GC2145_CSI2_MODE_MIPI_EN, 0, &ret); cci_write(gc2145->regmap, GC2145_REG_PAGE_SELECT, 0x00, &ret); + + /* Disable dvp streaming */ + cci_write(gc2145->regmap, GC2145_REG_PAD_IO, 0x00, &ret); if (ret) dev_err(&client->dev, "%s failed to write regs\n", __func__); @@ -1233,9 +1287,8 @@ static int gc2145_init_controls(struct gc2145 *gc2145) static int gc2145_check_hwcfg(struct device *dev) { struct fwnode_handle *endpoint; - struct v4l2_fwnode_endpoint ep_cfg = { - .bus_type = V4L2_MBUS_CSI2_DPHY - }; + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct gc2145 *gc2145 = to_gc2145(sd); int ret; endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); @@ -1244,36 +1297,46 @@ static int gc2145_check_hwcfg(struct device *dev) return -EINVAL; } - ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg); + ret = v4l2_fwnode_endpoint_parse(endpoint, &gc2145->ep); fwnode_handle_put(endpoint); if (ret) return ret; - /* Check the number of MIPI CSI2 data lanes */ - if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) { - dev_err(dev, "only 2 data lanes are currently supported\n"); - ret = -EINVAL; - goto out; - } + switch (gc2145->ep.bus_type) { + case V4L2_MBUS_CSI2_DPHY: + /* Check the link frequency set in device tree */ + if (!gc2145->ep.nr_of_link_frequencies) { + dev_err(dev, "link-frequencies property not found in DT\n"); + ret = -EINVAL; + goto out; + } + + /* Check the number of MIPI CSI2 data lanes */ + if (gc2145->ep.bus.mipi_csi2.num_data_lanes != 2) { + dev_err(dev, "only 2 data lanes are currently supported\n"); + ret = -EINVAL; + goto out; + } + + if (gc2145->ep.nr_of_link_frequencies != 3 || + gc2145->ep.link_frequencies[0] != GC2145_640_480_LINKFREQ || + gc2145->ep.link_frequencies[1] != GC2145_1280_720_LINKFREQ || + gc2145->ep.link_frequencies[2] != GC2145_1600_1200_LINKFREQ) { + dev_err(dev, "Invalid link-frequencies provided\n"); + ret = -EINVAL; + goto out; + } + break; - /* Check the link frequency set in device tree */ - if (!ep_cfg.nr_of_link_frequencies) { - dev_err(dev, "link-frequency property not found in DT\n"); + case V4L2_MBUS_PARALLEL: + break; + default: + dev_err(dev, "unsupported bus type %u\n", + gc2145->ep.bus_type); ret = -EINVAL; goto out; } - - if (ep_cfg.nr_of_link_frequencies != 3 || - ep_cfg.link_frequencies[0] != GC2145_640_480_LINKFREQ || - ep_cfg.link_frequencies[1] != GC2145_1280_720_LINKFREQ || - ep_cfg.link_frequencies[2] != GC2145_1600_1200_LINKFREQ) { - dev_err(dev, "Invalid link-frequencies provided\n"); - ret = -EINVAL; - } - out: - v4l2_fwnode_endpoint_free(&ep_cfg); - return ret; }