/**
* struct sdhci_arasan_soc_ctl_map - Map in syscon to corecfg registers
*
- * It's up to the licensee of the Arsan IP block to make these available
- * somewhere if needed. Presumably these will be scattered somewhere that's
- * accessible via the syscon API.
- *
* @baseclkfreq: Where to find corecfg_baseclkfreq
* @clockmultiplier: Where to find corecfg_clockmultiplier
* @hiword_update: If true, use HIWORD_UPDATE to access the syscon
+ *
+ * It's up to the licensee of the Arsan IP block to make these available
+ * somewhere if needed. Presumably these will be scattered somewhere that's
+ * accessible via the syscon API.
*/
struct sdhci_arasan_soc_ctl_map {
struct sdhci_arasan_soc_ctl_field baseclkfreq;
};
/**
- * struct sdhci_arasan_clk_data
+ * struct sdhci_arasan_clk_data - Arasan Controller Clock Data.
+ *
* @sdcardclk_hw: Struct for the clock we might provide to a PHY.
* @sdcardclk: Pointer to normal 'struct clock' for sdcardclk_hw.
* @sampleclk_hw: Struct for the clock we might provide to a PHY.
};
/**
- * struct sdhci_arasan_data
+ * struct sdhci_arasan_data - Arasan Controller Data
+ *
* @host: Pointer to the main SDHCI host structure.
* @clk_ahb: Pointer to the AHB clock
* @phy: Pointer to the generic phy
* @is_phy_on: True if the PHY is on; false if not.
+ * @has_cqe: True if controller has command queuing engine.
* @clk_data: Struct for the Arasan Controller Clock Data.
* @clk_ops: Struct for the Arasan Controller Clock Operations.
* @soc_ctl_base: Pointer to regmap for syscon for soc_ctl registers.
* @soc_ctl_map: Map to get offsets into soc_ctl registers.
+ * @quirks: Arasan deviations from spec.
*/
struct sdhci_arasan_data {
struct sdhci_host *host;
struct regmap *soc_ctl_base;
const struct sdhci_arasan_soc_ctl_map *soc_ctl_map;
- unsigned int quirks; /* Arasan deviations from spec */
+ unsigned int quirks;
/* Controller does not have CD wired and will not function normally without */
#define SDHCI_ARASAN_QUIRK_FORCE_CDTEST BIT(0)
/**
* sdhci_arasan_syscon_write - Write to a field in soc_ctl registers
*
+ * @host: The sdhci_host
+ * @fld: The field to write to
+ * @val: The value to write
+ *
* This function allows writing to fields in sdhci_arasan_soc_ctl_map.
* Note that if a field is specified as not available (shift < 0) then
* this function will silently return an error code. It will be noisy
* and print errors for any other (unexpected) errors.
*
- * @host: The sdhci_host
- * @fld: The field to write to
- * @val: The value to write
+ * Return: 0 on success and error value on error
*/
static int sdhci_arasan_syscon_write(struct sdhci_host *host,
const struct sdhci_arasan_soc_ctl_field *fld,
/**
* sdhci_arasan_suspend - Suspend method for the driver
* @dev: Address of the device structure
- * Returns 0 on success and error value on error
*
* Put the device in a low power state.
+ *
+ * Return: 0 on success and error value on error
*/
static int sdhci_arasan_suspend(struct device *dev)
{
/**
* sdhci_arasan_resume - Resume method for the driver
* @dev: Address of the device structure
- * Returns 0 on success and error value on error
*
* Resume operation after suspend
+ *
+ * Return: 0 on success and error value on error
*/
static int sdhci_arasan_resume(struct device *dev)
{
/**
* sdhci_arasan_sdcardclk_recalc_rate - Return the card clock rate
*
+ * @hw: Pointer to the hardware clock structure.
+ * @parent_rate: The parent rate (should be rate of clk_xin).
+ *
* Return the current actual rate of the SD card clock. This can be used
* to communicate with out PHY.
*
- * @hw: Pointer to the hardware clock structure.
- * @parent_rate The parent rate (should be rate of clk_xin).
- * Returns the card clock rate.
+ * Return: The card clock rate.
*/
static unsigned long sdhci_arasan_sdcardclk_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
-
{
struct sdhci_arasan_clk_data *clk_data =
container_of(hw, struct sdhci_arasan_clk_data, sdcardclk_hw);
/**
* sdhci_arasan_sampleclk_recalc_rate - Return the sampling clock rate
*
+ * @hw: Pointer to the hardware clock structure.
+ * @parent_rate: The parent rate (should be rate of clk_xin).
+ *
* Return the current actual rate of the sampling clock. This can be used
* to communicate with out PHY.
*
- * @hw: Pointer to the hardware clock structure.
- * @parent_rate The parent rate (should be rate of clk_xin).
- * Returns the sample clock rate.
+ * Return: The sample clock rate.
*/
static unsigned long sdhci_arasan_sampleclk_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
-
{
struct sdhci_arasan_clk_data *clk_data =
container_of(hw, struct sdhci_arasan_clk_data, sampleclk_hw);
/**
* sdhci_zynqmp_sdcardclk_set_phase - Set the SD Output Clock Tap Delays
*
+ * @hw: Pointer to the hardware clock structure.
+ * @degrees: The clock phase shift between 0 - 359.
+ *
* Set the SD Output Clock Tap Delays for Output path
*
- * @hw: Pointer to the hardware clock structure.
- * @degrees The clock phase shift between 0 - 359.
* Return: 0 on success and error value on error
*/
static int sdhci_zynqmp_sdcardclk_set_phase(struct clk_hw *hw, int degrees)
-
{
struct sdhci_arasan_clk_data *clk_data =
container_of(hw, struct sdhci_arasan_clk_data, sdcardclk_hw);
/**
* sdhci_zynqmp_sampleclk_set_phase - Set the SD Input Clock Tap Delays
*
+ * @hw: Pointer to the hardware clock structure.
+ * @degrees: The clock phase shift between 0 - 359.
+ *
* Set the SD Input Clock Tap Delays for Input path
*
- * @hw: Pointer to the hardware clock structure.
- * @degrees The clock phase shift between 0 - 359.
* Return: 0 on success and error value on error
*/
static int sdhci_zynqmp_sampleclk_set_phase(struct clk_hw *hw, int degrees)
-
{
struct sdhci_arasan_clk_data *clk_data =
container_of(hw, struct sdhci_arasan_clk_data, sampleclk_hw);
/**
* sdhci_versal_sdcardclk_set_phase - Set the SD Output Clock Tap Delays
*
+ * @hw: Pointer to the hardware clock structure.
+ * @degrees: The clock phase shift between 0 - 359.
+ *
* Set the SD Output Clock Tap Delays for Output path
*
- * @hw: Pointer to the hardware clock structure.
- * @degrees The clock phase shift between 0 - 359.
* Return: 0 on success and error value on error
*/
static int sdhci_versal_sdcardclk_set_phase(struct clk_hw *hw, int degrees)
/**
* sdhci_versal_sampleclk_set_phase - Set the SD Input Clock Tap Delays
*
+ * @hw: Pointer to the hardware clock structure.
+ * @degrees: The clock phase shift between 0 - 359.
+ *
* Set the SD Input Clock Tap Delays for Input path
*
- * @hw: Pointer to the hardware clock structure.
- * @degrees The clock phase shift between 0 - 359.
* Return: 0 on success and error value on error
*/
static int sdhci_versal_sampleclk_set_phase(struct clk_hw *hw, int degrees)
/**
* sdhci_arasan_update_clockmultiplier - Set corecfg_clockmultiplier
*
+ * @host: The sdhci_host
+ * @value: The value to write
+ *
* The corecfg_clockmultiplier is supposed to contain clock multiplier
* value of programmable clock generator.
*
* - The value of corecfg_clockmultiplier should sync with that of corresponding
* value reading from sdhci_capability_register. So this function is called
* once at probe time and never called again.
- *
- * @host: The sdhci_host
*/
static void sdhci_arasan_update_clockmultiplier(struct sdhci_host *host,
u32 value)
/**
* sdhci_arasan_update_baseclkfreq - Set corecfg_baseclkfreq
*
+ * @host: The sdhci_host
+ *
* The corecfg_baseclkfreq is supposed to contain the MHz of clk_xin. This
* function can be used to make that happen.
*
* - It's assumed that clk_xin is not dynamic and that we use the SDHCI divider
* to achieve lower clock rates. That means that this function is called once
* at probe time and never called again.
- *
- * @host: The sdhci_host
*/
static void sdhci_arasan_update_baseclkfreq(struct sdhci_host *host)
{
/**
* arasan_dt_parse_clk_phases - Read Clock Delay values from DT
*
- * Called at initialization to parse the values of Clock Delays.
- *
* @dev: Pointer to our struct device.
* @clk_data: Pointer to the Clock Data structure
+ *
+ * Called at initialization to parse the values of Clock Delays.
*/
static void arasan_dt_parse_clk_phases(struct device *dev,
struct sdhci_arasan_clk_data *clk_data)
/**
* sdhci_arasan_register_sdcardclk - Register the sdcardclk for a PHY to use
*
+ * @sdhci_arasan: Our private data structure.
+ * @clk_xin: Pointer to the functional clock
+ * @dev: Pointer to our struct device.
+ *
* Some PHY devices need to know what the actual card clock is. In order for
* them to find out, we'll provide a clock through the common clock framework
* for them to query.
*
- * @sdhci_arasan: Our private data structure.
- * @clk_xin: Pointer to the functional clock
- * @dev: Pointer to our struct device.
- * Returns 0 on success and error value on error
+ * Return: 0 on success and error value on error
*/
static int
sdhci_arasan_register_sdcardclk(struct sdhci_arasan_data *sdhci_arasan,
/**
* sdhci_arasan_register_sampleclk - Register the sampleclk for a PHY to use
*
+ * @sdhci_arasan: Our private data structure.
+ * @clk_xin: Pointer to the functional clock
+ * @dev: Pointer to our struct device.
+ *
* Some PHY devices need to know what the actual card clock is. In order for
* them to find out, we'll provide a clock through the common clock framework
* for them to query.
*
- * @sdhci_arasan: Our private data structure.
- * @clk_xin: Pointer to the functional clock
- * @dev: Pointer to our struct device.
- * Returns 0 on success and error value on error
+ * Return: 0 on success and error value on error
*/
static int
sdhci_arasan_register_sampleclk(struct sdhci_arasan_data *sdhci_arasan,
/**
* sdhci_arasan_unregister_sdclk - Undoes sdhci_arasan_register_sdclk()
*
+ * @dev: Pointer to our struct device.
+ *
* Should be called any time we're exiting and sdhci_arasan_register_sdclk()
* returned success.
- *
- * @dev: Pointer to our struct device.
*/
static void sdhci_arasan_unregister_sdclk(struct device *dev)
{
/**
* sdhci_arasan_register_sdclk - Register the sdcardclk for a PHY to use
*
+ * @sdhci_arasan: Our private data structure.
+ * @clk_xin: Pointer to the functional clock
+ * @dev: Pointer to our struct device.
+ *
* Some PHY devices need to know what the actual card clock is. In order for
* them to find out, we'll provide a clock through the common clock framework
* for them to query.
* to create nice clean device tree bindings and later (if needed) we can try
* re-architecting SDHCI if we see some benefit to it.
*
- * @sdhci_arasan: Our private data structure.
- * @clk_xin: Pointer to the functional clock
- * @dev: Pointer to our struct device.
- * Returns 0 on success and error value on error
+ * Return: 0 on success and error value on error
*/
static int sdhci_arasan_register_sdclk(struct sdhci_arasan_data *sdhci_arasan,
struct clk *clk_xin,
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