Date: Fri, 21 May 2021 16:04:17 GMT From: Emmanuel Vadot <manu@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 03d4e8bb6592 - main - mmc_fdt_helper: Add mmc_fdt_set_power Message-ID: <202105211604.14LG4HsE005137@gitrepo.freebsd.org>
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The branch main has been updated by manu: URL: https://cgit.FreeBSD.org/src/commit/?id=03d4e8bb6592fefab7b17f1d163adba4e35a12c2 commit 03d4e8bb6592fefab7b17f1d163adba4e35a12c2 Author: Emmanuel Vadot <manu@FreeBSD.org> AuthorDate: 2021-05-16 14:18:46 +0000 Commit: Emmanuel Vadot <manu@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, ®_status); + if (rv == 0 && reg_status == REGULATOR_STATUS_ENABLED) + regulator_disable(helper->vmmc_supply); + } + if (helper->vqmmc_supply) { + rv = regulator_status(helper->vqmmc_supply, ®_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, ®_status); + if (rv == 0 && reg_status != REGULATOR_STATUS_ENABLED) + regulator_enable(helper->vmmc_supply); + } + if (helper->vqmmc_supply) { + rv = regulator_status(helper->vqmmc_supply, ®_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
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