diff options
Diffstat (limited to 'drivers/mmc/host/mmci.h')
| -rw-r--r-- | drivers/mmc/host/mmci.h | 81 |
1 files changed, 80 insertions, 1 deletions
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index f91cdf7f6dae..517591d219e9 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -195,8 +195,86 @@ #define MMCI_PINCTRL_STATE_OPENDRAIN "opendrain" struct clk; -struct variant_data; struct dma_chan; +struct mmci_host; + +/** + * struct variant_data - MMCI variant-specific quirks + * @clkreg: default value for MCICLOCK register + * @clkreg_enable: enable value for MMCICLOCK register + * @clkreg_8bit_bus_enable: enable value for 8 bit bus + * @clkreg_neg_edge_enable: enable value for inverted data/cmd output + * @datalength_bits: number of bits in the MMCIDATALENGTH register + * @fifosize: number of bytes that can be written when MMCI_TXFIFOEMPTY + * is asserted (likewise for RX) + * @fifohalfsize: number of bytes that can be written when MCI_TXFIFOHALFEMPTY + * is asserted (likewise for RX) + * @data_cmd_enable: enable value for data commands. + * @st_sdio: enable ST specific SDIO logic + * @st_clkdiv: true if using a ST-specific clock divider algorithm + * @datactrl_mask_ddrmode: ddr mode mask in datactrl register. + * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register + * @blksz_datactrl4: true if Block size is at b4..b16 position in datactrl + * register + * @datactrl_mask_sdio: SDIO enable mask in datactrl register + * @pwrreg_powerup: power up value for MMCIPOWER register + * @f_max: maximum clk frequency supported by the controller. + * @signal_direction: input/out direction of bus signals can be indicated + * @pwrreg_clkgate: MMCIPOWER register must be used to gate the clock + * @busy_detect: true if the variant supports busy detection on DAT0. + * @busy_dpsm_flag: bitmask enabling busy detection in the DPSM + * @busy_detect_flag: bitmask identifying the bit in the MMCISTATUS register + * indicating that the card is busy + * @busy_detect_mask: bitmask identifying the bit in the MMCIMASK0 to mask for + * getting busy end detection interrupts + * @pwrreg_nopower: bits in MMCIPOWER don't controls ext. power supply + * @explicit_mclk_control: enable explicit mclk control in driver. + * @qcom_fifo: enables qcom specific fifo pio read logic. + * @qcom_dml: enables qcom specific dma glue for dma transfers. + * @reversed_irq_handling: handle data irq before cmd irq. + * @mmcimask1: true if variant have a MMCIMASK1 register. + * @start_err: bitmask identifying the STARTBITERR bit inside MMCISTATUS + * register. + * @opendrain: bitmask identifying the OPENDRAIN bit inside MMCIPOWER register + */ +struct variant_data { + unsigned int clkreg; + unsigned int clkreg_enable; + unsigned int clkreg_8bit_bus_enable; + unsigned int clkreg_neg_edge_enable; + unsigned int datalength_bits; + unsigned int fifosize; + unsigned int fifohalfsize; + unsigned int data_cmd_enable; + unsigned int datactrl_mask_ddrmode; + unsigned int datactrl_mask_sdio; + bool st_sdio; + bool st_clkdiv; + bool blksz_datactrl16; + bool blksz_datactrl4; + u32 pwrreg_powerup; + u32 f_max; + bool signal_direction; + bool pwrreg_clkgate; + bool busy_detect; + u32 busy_dpsm_flag; + u32 busy_detect_flag; + u32 busy_detect_mask; + bool pwrreg_nopower; + bool explicit_mclk_control; + bool qcom_fifo; + bool qcom_dml; + bool reversed_irq_handling; + bool mmcimask1; + u32 start_err; + u32 opendrain; + void (*init)(struct mmci_host *host); +}; + +/* mmci variant callbacks */ +struct mmci_host_ops { + void (*dma_setup)(struct mmci_host *host); +}; struct mmci_host_next { struct dma_async_tx_descriptor *dma_desc; @@ -228,6 +306,7 @@ struct mmci_host { u32 mask1_reg; bool vqmmc_enabled; struct mmci_platform_data *plat; + struct mmci_host_ops *ops; struct variant_data *variant; struct pinctrl *pinctrl; struct pinctrl_state *pins_default; |