diff options
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_hdmi.h')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_hdmi.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi.h b/drivers/gpu/drm/sun4i/sun4i_hdmi.h index a1f8cba251a2..b685ee11623d 100644 --- a/drivers/gpu/drm/sun4i/sun4i_hdmi.h +++ b/drivers/gpu/drm/sun4i/sun4i_hdmi.h @@ -14,6 +14,7 @@ #include <drm/drm_connector.h> #include <drm/drm_encoder.h> +#include <linux/regmap.h> #include <media/cec-pin.h> @@ -58,16 +59,24 @@ #define SUN4I_HDMI_PAD_CTRL0_TXEN BIT(23) #define SUN4I_HDMI_PAD_CTRL1_REG 0x204 +#define SUN4I_HDMI_PAD_CTRL1_UNKNOWN BIT(24) /* set on A31 */ #define SUN4I_HDMI_PAD_CTRL1_AMP_OPT BIT(23) #define SUN4I_HDMI_PAD_CTRL1_AMPCK_OPT BIT(22) #define SUN4I_HDMI_PAD_CTRL1_EMP_OPT BIT(20) #define SUN4I_HDMI_PAD_CTRL1_EMPCK_OPT BIT(19) +#define SUN4I_HDMI_PAD_CTRL1_PWSCK BIT(18) +#define SUN4I_HDMI_PAD_CTRL1_PWSDT BIT(17) #define SUN4I_HDMI_PAD_CTRL1_REG_DEN BIT(15) #define SUN4I_HDMI_PAD_CTRL1_REG_DENCK BIT(14) #define SUN4I_HDMI_PAD_CTRL1_REG_EMP(n) (((n) & 7) << 10) #define SUN4I_HDMI_PAD_CTRL1_HALVE_CLK BIT(6) #define SUN4I_HDMI_PAD_CTRL1_REG_AMP(n) (((n) & 7) << 3) +/* These bits seem to invert the TMDS data channels */ +#define SUN4I_HDMI_PAD_CTRL1_INVERT_R BIT(2) +#define SUN4I_HDMI_PAD_CTRL1_INVERT_G BIT(1) +#define SUN4I_HDMI_PAD_CTRL1_INVERT_B BIT(0) + #define SUN4I_HDMI_PLL_CTRL_REG 0x208 #define SUN4I_HDMI_PLL_CTRL_PLL_EN BIT(31) #define SUN4I_HDMI_PLL_CTRL_BWS BIT(30) @@ -152,21 +161,106 @@ #define SUN4I_HDMI_DDC_FIFO_SIZE 16 +/* A31 specific */ +#define SUN6I_HDMI_DDC_CTRL_REG 0x500 +#define SUN6I_HDMI_DDC_CTRL_RESET BIT(31) +#define SUN6I_HDMI_DDC_CTRL_START_CMD BIT(27) +#define SUN6I_HDMI_DDC_CTRL_SDA_ENABLE BIT(6) +#define SUN6I_HDMI_DDC_CTRL_SCL_ENABLE BIT(4) +#define SUN6I_HDMI_DDC_CTRL_ENABLE BIT(0) + +#define SUN6I_HDMI_DDC_CMD_REG 0x508 +#define SUN6I_HDMI_DDC_CMD_BYTE_COUNT(count) ((count) << 16) +/* command types in lower 3 bits are the same as sun4i */ + +#define SUN6I_HDMI_DDC_ADDR_REG 0x50c +#define SUN6I_HDMI_DDC_ADDR_SEGMENT(seg) (((seg) & 0xff) << 24) +#define SUN6I_HDMI_DDC_ADDR_EDDC(addr) (((addr) & 0xff) << 16) +#define SUN6I_HDMI_DDC_ADDR_OFFSET(off) (((off) & 0xff) << 8) +#define SUN6I_HDMI_DDC_ADDR_SLAVE(addr) (((addr) & 0xff) << 1) + +#define SUN6I_HDMI_DDC_INT_STATUS_REG 0x514 +#define SUN6I_HDMI_DDC_INT_STATUS_TIMEOUT BIT(8) +/* lower 8 bits are the same as sun4i */ + +#define SUN6I_HDMI_DDC_FIFO_CTRL_REG 0x518 +#define SUN6I_HDMI_DDC_FIFO_CTRL_CLEAR BIT(15) +/* lower 9 bits are the same as sun4i */ + +#define SUN6I_HDMI_DDC_CLK_REG 0x520 +/* DDC CLK bit fields are the same, but the formula is not */ + +#define SUN6I_HDMI_DDC_FIFO_DATA_REG 0x580 + enum sun4i_hdmi_pkt_type { SUN4I_HDMI_PKT_AVI = 2, SUN4I_HDMI_PKT_END = 15, }; +struct sun4i_hdmi_variant { + bool has_ddc_parent_clk; + bool has_reset_control; + + u32 pad_ctrl0_init_val; + u32 pad_ctrl1_init_val; + u32 pll_ctrl_init_val; + + struct reg_field ddc_clk_reg; + u8 ddc_clk_pre_divider; + u8 ddc_clk_m_offset; + + u8 tmds_clk_div_offset; + + /* Register fields for I2C adapter */ + struct reg_field field_ddc_en; + struct reg_field field_ddc_start; + struct reg_field field_ddc_reset; + struct reg_field field_ddc_addr_reg; + struct reg_field field_ddc_slave_addr; + struct reg_field field_ddc_int_mask; + struct reg_field field_ddc_int_status; + struct reg_field field_ddc_fifo_clear; + struct reg_field field_ddc_fifo_rx_thres; + struct reg_field field_ddc_fifo_tx_thres; + struct reg_field field_ddc_byte_count; + struct reg_field field_ddc_cmd; + struct reg_field field_ddc_sda_en; + struct reg_field field_ddc_sck_en; + + /* DDC FIFO register offset */ + u32 ddc_fifo_reg; + + /* + * DDC FIFO threshold boundary conditions + * + * This is used to cope with the threshold boundary condition + * being slightly different on sun5i and sun6i. + * + * On sun5i the threshold is exclusive, i.e. does not include, + * the value of the threshold. ( > for RX; < for TX ) + * On sun6i the threshold is inclusive, i.e. includes, the + * value of the threshold. ( >= for RX; <= for TX ) + */ + bool ddc_fifo_thres_incl; + + bool ddc_fifo_has_dir; +}; + struct sun4i_hdmi { struct drm_connector connector; struct drm_encoder encoder; struct device *dev; void __iomem *base; + struct regmap *regmap; + + /* Reset control */ + struct reset_control *reset; /* Parent clocks */ struct clk *bus_clk; struct clk *mod_clk; + struct clk *ddc_parent_clk; struct clk *pll0_clk; struct clk *pll1_clk; @@ -176,10 +270,28 @@ struct sun4i_hdmi { struct i2c_adapter *i2c; + /* Regmap fields for I2C adapter */ + struct regmap_field *field_ddc_en; + struct regmap_field *field_ddc_start; + struct regmap_field *field_ddc_reset; + struct regmap_field *field_ddc_addr_reg; + struct regmap_field *field_ddc_slave_addr; + struct regmap_field *field_ddc_int_mask; + struct regmap_field *field_ddc_int_status; + struct regmap_field *field_ddc_fifo_clear; + struct regmap_field *field_ddc_fifo_rx_thres; + struct regmap_field *field_ddc_fifo_tx_thres; + struct regmap_field *field_ddc_byte_count; + struct regmap_field *field_ddc_cmd; + struct regmap_field *field_ddc_sda_en; + struct regmap_field *field_ddc_sck_en; + struct sun4i_drv *drv; bool hdmi_monitor; struct cec_adapter *cec_adap; + + const struct sun4i_hdmi_variant *variant; }; int sun4i_ddc_create(struct sun4i_hdmi *hdmi, struct clk *clk); |