diff options
Diffstat (limited to 'drivers/mmc')
97 files changed, 1303 insertions, 1076 deletions
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index ec21388311db..2436eb4996a4 100644 --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only # # MMC subsystem configuration # diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index 26ab7af4e0f9..3ea0126a9a72 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only # # Makefile for the kernel mmc device drivers. # diff --git a/drivers/mmc/core/Kconfig b/drivers/mmc/core/Kconfig index 2f38a7ad07e0..c12fe13e4b14 100644 --- a/drivers/mmc/core/Kconfig +++ b/drivers/mmc/core/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only # # MMC core configuration # diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h index eef301452406..7bd392d55cfa 100644 --- a/drivers/mmc/core/card.h +++ b/drivers/mmc/core/card.h @@ -1,11 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Private header for the mmc subsystem * * Copyright (C) 2016 Linaro Ltd * * Author: Ulf Hansson <ulf.hansson@linaro.org> - * - * License terms: GNU General Public License (GPL) version 2 */ #ifndef _MMC_CORE_CARD_H diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 3a4402a79904..6a51f7a06ce7 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -363,11 +363,11 @@ int mmc_of_parse_voltage(struct device_node *np, u32 *mask) int num_ranges, i; voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges); - num_ranges = num_ranges / sizeof(*voltage_ranges) / 2; if (!voltage_ranges) { pr_debug("%pOF: voltage-ranges unspecified\n", np); return 0; } + num_ranges = num_ranges / sizeof(*voltage_ranges) / 2; if (!num_ranges) { pr_err("%pOF: voltage-ranges empty\n", np); return -EINVAL; @@ -429,8 +429,6 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev) if (mmc_gpio_alloc(host)) { put_device(&host->class_dev); - ida_simple_remove(&mmc_host_ida, host->index); - kfree(host); return NULL; } diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index c5208fb312ae..74e4364bc9fb 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * linux/drivers/mmc/core/mmc_ops.h * * Copyright 2006-2007 Pierre Ossman - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. */ #include <linux/slab.h> @@ -184,11 +180,7 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) if (err) break; - /* if we're just probing, do a single pass */ - if (ocr == 0) - break; - - /* otherwise wait until reset completes */ + /* wait until reset completes */ if (mmc_host_is_spi(host)) { if (!(cmd.resp[0] & R1_SPI_IDLE)) break; @@ -200,6 +192,16 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) err = -ETIMEDOUT; mmc_delay(10); + + /* + * According to eMMC specification v5.1 section 6.4.3, we + * should issue CMD1 repeatedly in the idle state until + * the eMMC is ready. Otherwise some eMMC devices seem to enter + * the inactive mode after mmc_init_card() issued CMD0 when + * the eMMC device is busy. + */ + if (!ocr && !mmc_host_is_spi(host)) + cmd.arg = cmd.resp[0] | BIT(30); } if (rocr && !mmc_host_is_spi(host)) diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h index 018a5e3f66d6..8f2f9475716d 100644 --- a/drivers/mmc/core/mmc_ops.h +++ b/drivers/mmc/core/mmc_ops.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * linux/drivers/mmc/core/mmc_ops.h * * Copyright 2006-2007 Pierre Ossman - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. */ #ifndef _MMC_MMC_OPS_H diff --git a/drivers/mmc/core/mmc_test.c b/drivers/mmc/core/mmc_test.c index eabb1cab1765..b27df2d2b5ae 100644 --- a/drivers/mmc/core/mmc_test.c +++ b/drivers/mmc/core/mmc_test.c @@ -1,10 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2007-2008 Pierre Ossman - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. */ #include <linux/mmc/core.h> diff --git a/drivers/mmc/core/pwrseq.c b/drivers/mmc/core/pwrseq.c index e3ad30fa8307..ef675f364bf0 100644 --- a/drivers/mmc/core/pwrseq.c +++ b/drivers/mmc/core/pwrseq.c @@ -1,10 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014 Linaro Ltd * * Author: Ulf Hansson <ulf.hansson@linaro.org> * - * License terms: GNU General Public License (GPL) version 2 - * * MMC power sequence management */ #include <linux/kernel.h> diff --git a/drivers/mmc/core/pwrseq.h b/drivers/mmc/core/pwrseq.h index 819386f4ec61..f3bb103db9ad 100644 --- a/drivers/mmc/core/pwrseq.h +++ b/drivers/mmc/core/pwrseq.h @@ -1,9 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2014 Linaro Ltd * * Author: Ulf Hansson <ulf.hansson@linaro.org> - * - * License terms: GNU General Public License (GPL) version 2 */ #ifndef _MMC_CORE_PWRSEQ_H #define _MMC_CORE_PWRSEQ_H diff --git a/drivers/mmc/core/pwrseq_emmc.c b/drivers/mmc/core/pwrseq_emmc.c index efb8a7965dd4..f6dde9edd7a3 100644 --- a/drivers/mmc/core/pwrseq_emmc.c +++ b/drivers/mmc/core/pwrseq_emmc.c @@ -1,10 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2015, Samsung Electronics Co., Ltd. * * Author: Marek Szyprowski <m.szyprowski@samsung.com> * - * License terms: GNU General Public License (GPL) version 2 - * * Simple eMMC hardware reset provider */ #include <linux/delay.h> @@ -30,19 +29,14 @@ struct mmc_pwrseq_emmc { #define to_pwrseq_emmc(p) container_of(p, struct mmc_pwrseq_emmc, pwrseq) -static void __mmc_pwrseq_emmc_reset(struct mmc_pwrseq_emmc *pwrseq) -{ - gpiod_set_value(pwrseq->reset_gpio, 1); - udelay(1); - gpiod_set_value(pwrseq->reset_gpio, 0); - udelay(200); -} - static void mmc_pwrseq_emmc_reset(struct mmc_host *host) { struct mmc_pwrseq_emmc *pwrseq = to_pwrseq_emmc(host->pwrseq); - __mmc_pwrseq_emmc_reset(pwrseq); + gpiod_set_value_cansleep(pwrseq->reset_gpio, 1); + udelay(1); + gpiod_set_value_cansleep(pwrseq->reset_gpio, 0); + udelay(200); } static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this, @@ -50,8 +44,11 @@ static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this, { struct mmc_pwrseq_emmc *pwrseq = container_of(this, struct mmc_pwrseq_emmc, reset_nb); + gpiod_set_value(pwrseq->reset_gp |