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mmc: dw_mmc: add common capabilities to replace caps

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The caps field depends on the mshcN alias ID but for some devices this
is unnecessary as the capabilities are the same for all instances
sharing the same compatible.

Add a common_caps field for this case which updates the host's
capabilities without needing the mshcN alias ID.

Signed-off-by: John Keeping <john@metanate.com>
Tested-by: Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Link: https://lore.kernel.org/r/20211124184603.3897245-2-john@metanate.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
John Keeping 2021-11-24 18:45:59 +00:00 committed by Ulf Hansson
parent e53e97f805
commit 0dc7a3ec30
2 changed files with 6 additions and 0 deletions
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3
drivers/mmc/host/dw_mmc.c
View File

@ -2856,6 +2856,9 @@ static int dw_mci_init_slot_caps(struct dw_mci_slot *slot)
if (host->pdata->pm_caps)
mmc->pm_caps = host->pdata->pm_caps;
if (drv_data)
mmc->caps |= drv_data->common_caps;
if (host->dev->of_node) {
ctrl_id = of_alias_get_id(host->dev->of_node, "mshc");
if (ctrl_id < 0)

3
drivers/mmc/host/dw_mmc.h
View File

@ -550,6 +550,8 @@ struct dw_mci_slot {
* dw_mci driver data - dw-mshc implementation specific driver data.
* @caps: mmc subsystem specified capabilities of the controller(s).
* @num_caps: number of capabilities specified by @caps.
* @common_caps: mmc subsystem specified capabilities applicable to all of
* the controllers
* @init: early implementation specific initialization.
* @set_ios: handle bus specific extensions.
* @parse_dt: parse implementation specific device tree properties.
@ -562,6 +564,7 @@ struct dw_mci_slot {
struct dw_mci_drv_data {
unsigned long *caps;
u32 num_caps;
u32 common_caps;
int (*init)(struct dw_mci *host);
void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios);
int (*parse_dt)(struct dw_mci *host);