git: 03d4e8bb6592 - main - mmc_fdt_helper: Add mmc_fdt_set_power

[Emmanuel Vadot]

The branch main has been updated by manu:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=03d4e8bb6592fefab7b17f1d163adba4e35a12c2

commit 03d4e8bb6592fefab7b17f1d163adba4e35a12c2
Author:     Emmanuel Vadot <m...@freebsd.org>
AuthorDate: 2021-05-16 14:18:46 +0000
Commit:     Emmanuel Vadot <m...@freebsd.org>
CommitDate: 2021-05-21 15:38:05 +0000

    mmc_fdt_helper: Add mmc_fdt_set_power
    
    This helper can be used to enable/disable the regulator and starting
    the power sequence of sd/sdio/eMMC cards.
    
    Sponsored by:   Diablotin Systems
    Differential Revision:  https://reviews.freebsd.org/D30291
---
 sys/dev/mmc/mmc_fdt_helpers.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 sys/dev/mmc/mmc_fdt_helpers.h |  1 +
 2 files changed, 43 insertions(+)

diff --git a/sys/dev/mmc/mmc_fdt_helpers.c b/sys/dev/mmc/mmc_fdt_helpers.c
index e544f3c4ac08..4e8a1730d240 100644
--- a/sys/dev/mmc/mmc_fdt_helpers.c
+++ b/sys/dev/mmc/mmc_fdt_helpers.c
@@ -45,6 +45,8 @@ __FBSDID("$FreeBSD$");
 #include <dev/extres/regulator/regulator.h>
 #endif
 
+#include "mmc_pwrseq_if.h"
+
 static inline void
 mmc_fdt_parse_sd_speed(phandle_t node, struct mmc_host *host)
 {
@@ -423,3 +425,43 @@ mmc_fdt_gpio_get_readonly(struct mmc_fdt_helper *helper)
 
        return (pinstate ^ (helper->props & MMC_PROP_WP_INVERTED));
 }
+
+void
+mmc_fdt_set_power(struct mmc_fdt_helper *helper, enum mmc_power_mode 
power_mode)
+{
+       int reg_status;
+       int rv;
+
+       switch (power_mode) {
+       case power_on:
+               break;
+       case power_off:
+               if (helper->vmmc_supply) {
+                       rv = regulator_status(helper->vmmc_supply, &reg_status);
+                       if (rv == 0 && reg_status == REGULATOR_STATUS_ENABLED)
+                               regulator_disable(helper->vmmc_supply);
+               }
+               if (helper->vqmmc_supply) {
+                       rv = regulator_status(helper->vqmmc_supply, 
&reg_status);
+                       if (rv == 0 && reg_status == REGULATOR_STATUS_ENABLED)
+                               regulator_disable(helper->vqmmc_supply);
+               }
+               if (helper->mmc_pwrseq)
+                       MMC_PWRSEQ_SET_POWER(helper->mmc_pwrseq, false);
+               break;
+       case power_up:
+               if (helper->vmmc_supply) {
+                       rv = regulator_status(helper->vmmc_supply, &reg_status);
+                       if (rv == 0 && reg_status != REGULATOR_STATUS_ENABLED)
+                               regulator_enable(helper->vmmc_supply);
+               }
+               if (helper->vqmmc_supply) {
+                       rv = regulator_status(helper->vqmmc_supply, 
&reg_status);
+                       if (rv == 0 && reg_status != REGULATOR_STATUS_ENABLED)
+                               regulator_enable(helper->vqmmc_supply);
+               }
+               if (helper->mmc_pwrseq)
+                       MMC_PWRSEQ_SET_POWER(helper->mmc_pwrseq, true);
+               break;
+       }
+}
diff --git a/sys/dev/mmc/mmc_fdt_helpers.h b/sys/dev/mmc/mmc_fdt_helpers.h
index c6e2175690ee..e6d6f3fbfd84 100644
--- a/sys/dev/mmc/mmc_fdt_helpers.h
+++ b/sys/dev/mmc/mmc_fdt_helpers.h
@@ -74,5 +74,6 @@ int mmc_fdt_gpio_setup(device_t dev, phandle_t node, struct 
mmc_fdt_helper *help
 void mmc_fdt_gpio_teardown(struct mmc_fdt_helper *helper);
 bool mmc_fdt_gpio_get_present(struct mmc_fdt_helper *helper);
 bool mmc_fdt_gpio_get_readonly(struct mmc_fdt_helper *helper);
+void mmc_fdt_set_power(struct mmc_fdt_helper *helper, enum mmc_power_mode 
power_mode);
 
 #endif
_______________________________________________
dev-commits-src-main@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/dev-commits-src-main
To unsubscribe, send any mail to "dev-commits-src-main-unsubscr...@freebsd.org"