diff options
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 112 |
1 files changed, 92 insertions, 20 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c index 5ab811cda00e..114cbe60b3e6 100644 --- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c +++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c @@ -20,9 +20,11 @@ #include <linux/clk.h> #include <linux/component.h> #include <linux/iopoll.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/regmap.h> +#include <linux/reset.h> #include "sun4i_backend.h" #include "sun4i_crtc.h" @@ -268,6 +270,60 @@ static const struct cec_pin_ops sun4i_hdmi_cec_pin_ops = { }; #endif +#define SUN4I_HDMI_PAD_CTRL1_MASK (GENMASK(24, 7) | GENMASK(5, 0)) +#define SUN4I_HDMI_PLL_CTRL_MASK (GENMASK(31, 8) | GENMASK(3, 0)) + +static const struct sun4i_hdmi_variant sun5i_variant = { + .pad_ctrl0_init_val = SUN4I_HDMI_PAD_CTRL0_TXEN | + SUN4I_HDMI_PAD_CTRL0_CKEN | + SUN4I_HDMI_PAD_CTRL0_PWENG | + SUN4I_HDMI_PAD_CTRL0_PWEND | + SUN4I_HDMI_PAD_CTRL0_PWENC | + SUN4I_HDMI_PAD_CTRL0_LDODEN | + SUN4I_HDMI_PAD_CTRL0_LDOCEN | + SUN4I_HDMI_PAD_CTRL0_BIASEN, + .pad_ctrl1_init_val = SUN4I_HDMI_PAD_CTRL1_REG_AMP(6) | + SUN4I_HDMI_PAD_CTRL1_REG_EMP(2) | + SUN4I_HDMI_PAD_CTRL1_REG_DENCK | + SUN4I_HDMI_PAD_CTRL1_REG_DEN | + SUN4I_HDMI_PAD_CTRL1_EMPCK_OPT | + SUN4I_HDMI_PAD_CTRL1_EMP_OPT | + SUN4I_HDMI_PAD_CTRL1_AMPCK_OPT | + SUN4I_HDMI_PAD_CTRL1_AMP_OPT, + .pll_ctrl_init_val = SUN4I_HDMI_PLL_CTRL_VCO_S(8) | + SUN4I_HDMI_PLL_CTRL_CS(7) | + SUN4I_HDMI_PLL_CTRL_CP_S(15) | + SUN4I_HDMI_PLL_CTRL_S(7) | + SUN4I_HDMI_PLL_CTRL_VCO_GAIN(4) | + SUN4I_HDMI_PLL_CTRL_SDIV2 | + SUN4I_HDMI_PLL_CTRL_LDO2_EN | + SUN4I_HDMI_PLL_CTRL_LDO1_EN | + SUN4I_HDMI_PLL_CTRL_HV_IS_33 | + SUN4I_HDMI_PLL_CTRL_BWS | + SUN4I_HDMI_PLL_CTRL_PLL_EN, + + .ddc_clk_reg = REG_FIELD(SUN4I_HDMI_DDC_CLK_REG, 0, 6), + .ddc_clk_pre_divider = 2, + .ddc_clk_m_offset = 1, + + .field_ddc_en = REG_FIELD(SUN4I_HDMI_DDC_CTRL_REG, 31, 31), + .field_ddc_start = REG_FIELD(SUN4I_HDMI_DDC_CTRL_REG, 30, 30), + .field_ddc_reset = REG_FIELD(SUN4I_HDMI_DDC_CTRL_REG, 0, 0), + .field_ddc_addr_reg = REG_FIELD(SUN4I_HDMI_DDC_ADDR_REG, 0, 31), + .field_ddc_slave_addr = REG_FIELD(SUN4I_HDMI_DDC_ADDR_REG, 0, 6), + .field_ddc_int_status = REG_FIELD(SUN4I_HDMI_DDC_INT_STATUS_REG, 0, 8), + .field_ddc_fifo_clear = REG_FIELD(SUN4I_HDMI_DDC_FIFO_CTRL_REG, 31, 31), + .field_ddc_fifo_rx_thres = REG_FIELD(SUN4I_HDMI_DDC_FIFO_CTRL_REG, 4, 7), + .field_ddc_fifo_tx_thres = REG_FIELD(SUN4I_HDMI_DDC_FIFO_CTRL_REG, 0, 3), + .field_ddc_byte_count = REG_FIELD(SUN4I_HDMI_DDC_BYTE_COUNT_REG, 0, 9), + .field_ddc_cmd = REG_FIELD(SUN4I_HDMI_DDC_CMD_REG, 0, 2), + .field_ddc_sda_en = REG_FIELD(SUN4I_HDMI_DDC_LINE_CTRL_REG, 9, 9), + .field_ddc_sck_en = REG_FIELD(SUN4I_HDMI_DDC_LINE_CTRL_REG, 8, 8), + + .ddc_fifo_reg = SUN4I_HDMI_DDC_FIFO_DATA_REG, + .ddc_fifo_has_dir = true, +}; + static const struct regmap_config sun4i_hdmi_regmap_config = { .reg_bits = 32, .val_bits = 32, @@ -293,6 +349,10 @@ static int sun4i_hdmi_bind(struct device *dev, struct device *master, hdmi->dev = dev; hdmi->drv = drv; + hdmi->variant = of_device_get_match_data(dev); + if (!hdmi->variant) + return -EINVAL; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); hdmi->base = devm_ioremap_resource(dev, res); if (IS_ERR(hdmi->base)) { @@ -300,10 +360,25 @@ static int sun4i_hdmi_bind(struct device *dev, struct device *master, return PTR_ERR(hdmi->base); } + if (hdmi->variant->has_reset_control) { + hdmi->reset = devm_reset_control_get(dev, NULL); + if (IS_ERR(hdmi->reset)) { + dev_err(dev, "Couldn't get the HDMI reset control\n"); + return PTR_ERR(hdmi->reset); + } + + ret = reset_control_deassert(hdmi->reset); + if (ret) { + dev_err(dev, "Couldn't deassert HDMI reset\n"); + return ret; + } + } + hdmi->bus_clk = devm_clk_get(dev, "ahb"); if (IS_ERR(hdmi->bus_clk)) { dev_err(dev, "Couldn't get the HDMI bus clock\n"); - return PTR_ERR(hdmi->bus_clk); + ret = PTR_ERR(hdmi->bus_clk); + goto err_assert_reset; } clk_prepare_enable(hdmi->bus_clk); @@ -342,12 +417,19 @@ static int sun4i_hdmi_bind(struct device *dev, struct device *master, goto err_disable_mod_clk; } + if (hdmi->variant->has_ddc_parent_clk) { + hdmi->ddc_parent_clk = devm_clk_get(dev, "ddc"); + if (IS_ERR(hdmi->ddc_parent_clk)) { + dev_err(dev, "Couldn't get the HDMI DDC clock\n"); + return PTR_ERR(hdmi->ddc_parent_clk); + } + } else { + hdmi->ddc_parent_clk = hdmi->tmds_clk; + } + writel(SUN4I_HDMI_CTRL_ENABLE, hdmi->base + SUN4I_HDMI_CTRL_REG); - writel(SUN4I_HDMI_PAD_CTRL0_TXEN | SUN4I_HDMI_PAD_CTRL0_CKEN | - SUN4I_HDMI_PAD_CTRL0_PWENG | SUN4I_HDMI_PAD_CTRL0_PWEND | - SUN4I_HDMI_PAD_CTRL0_PWENC | SUN4I_HDMI_PAD_CTRL0_LDODEN | - SUN4I_HDMI_PAD_CTRL0_LDOCEN | SUN4I_HDMI_PAD_CTRL0_BIASEN, + writel(hdmi->variant->pad_ctrl0_init_val, hdmi->base + SUN4I_HDMI_PAD_CTRL0_REG); /* @@ -357,24 +439,12 @@ static int sun4i_hdmi_bind(struct device *dev, struct device *master, */ reg = readl(hdmi->base + SUN4I_HDMI_PAD_CTRL1_REG); reg &= SUN4I_HDMI_PAD_CTRL1_HALVE_CLK; - reg |= SUN4I_HDMI_PAD_CTRL1_REG_AMP(6) | - SUN4I_HDMI_PAD_CTRL1_REG_EMP(2) | - SUN4I_HDMI_PAD_CTRL1_REG_DENCK | - SUN4I_HDMI_PAD_CTRL1_REG_DEN | - SUN4I_HDMI_PAD_CTRL1_EMPCK_OPT | - SUN4I_HDMI_PAD_CTRL1_EMP_OPT | - SUN4I_HDMI_PAD_CTRL1_AMPCK_OPT | - SUN4I_HDMI_PAD_CTRL1_AMP_OPT; + reg |= hdmi->variant->pad_ctrl1_init_val; writel(reg, hdmi->base + SUN4I_HDMI_PAD_CTRL1_REG); reg = readl(hdmi->base + SUN4I_HDMI_PLL_CTRL_REG); reg &= SUN4I_HDMI_PLL_CTRL_DIV_MASK; - reg |= SUN4I_HDMI_PLL_CTRL_VCO_S(8) | SUN4I_HDMI_PLL_CTRL_CS(7) | - SUN4I_HDMI_PLL_CTRL_CP_S(15) | SUN4I_HDMI_PLL_CTRL_S(7) | - SUN4I_HDMI_PLL_CTRL_VCO_GAIN(4) | SUN4I_HDMI_PLL_CTRL_SDIV2 | - SUN4I_HDMI_PLL_CTRL_LDO2_EN | SUN4I_HDMI_PLL_CTRL_LDO1_EN | - SUN4I_HDMI_PLL_CTRL_HV_IS_33 | SUN4I_HDMI_PLL_CTRL_BWS | - SUN4I_HDMI_PLL_CTRL_PLL_EN; + reg |= hdmi->variant->pll_ctrl_init_val; writel(reg, hdmi->base + SUN4I_HDMI_PLL_CTRL_REG); ret = sun4i_hdmi_i2c_create(dev, hdmi); @@ -444,6 +514,8 @@ err_disable_mod_clk: clk_disable_unprepare(hdmi->mod_clk); err_disable_bus_clk: clk_disable_unprepare(hdmi->bus_clk); +err_assert_reset: + reset_control_assert(hdmi->reset); return ret; } @@ -478,7 +550,7 @@ static int sun4i_hdmi_remove(struct platform_device *pdev) } static const struct of_device_id sun4i_hdmi_of_table[] = { - { .compatible = "allwinner,sun5i-a10s-hdmi" }, + { .compatible = "allwinner,sun5i-a10s-hdmi", .data = &sun5i_variant, }, { } }; MODULE_DEVICE_TABLE(of, sun4i_hdmi_of_table); |