From 98b5ce4c08ca85727888fdbd362d574bcfa18e3c Mon Sep 17 00:00:00 2001 From: Al Cooper Date: Wed, 2 Jun 2021 15:27:58 -0400 Subject: [PATCH] mmc: sdhci-iproc: Add support for the legacy sdhci controller on the BCM7211 Add support for the legacy Arasan sdhci controller on the BCM7211 and related SoC's. This includes adding a .shutdown callback to increase the power savings during S5. Signed-off-by: Al Cooper Link: https://lore.kernel.org/r/20210602192758.38735-2-alcooperx@gmail.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/Kconfig | 2 +- drivers/mmc/host/sdhci-iproc.c | 30 ++++++++++++++++++++++++++++++ drivers/mmc/host/sdhci.h | 2 ++ 3 files changed, 33 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index a4d4c757eea0..561184fa7eb9 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -412,7 +412,7 @@ config MMC_SDHCI_MILBEAUT config MMC_SDHCI_IPROC tristate "SDHCI support for the BCM2835 & iProc SD/MMC Controller" - depends on ARCH_BCM2835 || ARCH_BCM_IPROC || COMPILE_TEST + depends on ARCH_BCM2835 || ARCH_BCM_IPROC || ARCH_BRCMSTB || COMPILE_TEST depends on MMC_SDHCI_PLTFM depends on OF || ACPI default ARCH_BCM_IPROC diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c index ddeaf8e1f72f..cce390fe9cf3 100644 --- a/drivers/mmc/host/sdhci-iproc.c +++ b/drivers/mmc/host/sdhci-iproc.c @@ -286,11 +286,35 @@ static const struct sdhci_iproc_data bcm2711_data = { .mmc_caps = MMC_CAP_3_3V_DDR, }; +static const struct sdhci_pltfm_data sdhci_bcm7211a0_pltfm_data = { + .quirks = SDHCI_QUIRK_MISSING_CAPS | + SDHCI_QUIRK_BROKEN_TIMEOUT_VAL | + SDHCI_QUIRK_BROKEN_DMA | + SDHCI_QUIRK_BROKEN_ADMA, + .ops = &sdhci_iproc_ops, +}; + +#define BCM7211A0_BASE_CLK_MHZ 100 +static const struct sdhci_iproc_data bcm7211a0_data = { + .pdata = &sdhci_bcm7211a0_pltfm_data, + .caps = ((BCM7211A0_BASE_CLK_MHZ / 2) << SDHCI_TIMEOUT_CLK_SHIFT) | + (BCM7211A0_BASE_CLK_MHZ << SDHCI_CLOCK_BASE_SHIFT) | + ((0x2 << SDHCI_MAX_BLOCK_SHIFT) + & SDHCI_MAX_BLOCK_MASK) | + SDHCI_CAN_VDD_330 | + SDHCI_CAN_VDD_180 | + SDHCI_CAN_DO_SUSPEND | + SDHCI_CAN_DO_HISPD, + .caps1 = SDHCI_DRIVER_TYPE_C | + SDHCI_DRIVER_TYPE_D, +}; + static const struct of_device_id sdhci_iproc_of_match[] = { { .compatible = "brcm,bcm2835-sdhci", .data = &bcm2835_data }, { .compatible = "brcm,bcm2711-emmc2", .data = &bcm2711_data }, { .compatible = "brcm,sdhci-iproc-cygnus", .data = &iproc_cygnus_data}, { .compatible = "brcm,sdhci-iproc", .data = &iproc_data }, + { .compatible = "brcm,bcm7211a0-sdhci", .data = &bcm7211a0_data }, { } }; MODULE_DEVICE_TABLE(of, sdhci_iproc_of_match); @@ -384,6 +408,11 @@ static int sdhci_iproc_probe(struct platform_device *pdev) return ret; } +static void sdhci_iproc_shutdown(struct platform_device *pdev) +{ + sdhci_pltfm_suspend(&pdev->dev); +} + static struct platform_driver sdhci_iproc_driver = { .driver = { .name = "sdhci-iproc", @@ -394,6 +423,7 @@ static struct platform_driver sdhci_iproc_driver = { }, .probe = sdhci_iproc_probe, .remove = sdhci_pltfm_unregister, + .shutdown = sdhci_iproc_shutdown, }; module_platform_driver(sdhci_iproc_driver); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 0770c036e2ff..c35ed4be75b7 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -201,8 +201,10 @@ #define SDHCI_CAPABILITIES 0x40 #define SDHCI_TIMEOUT_CLK_MASK GENMASK(5, 0) +#define SDHCI_TIMEOUT_CLK_SHIFT 0 #define SDHCI_TIMEOUT_CLK_UNIT 0x00000080 #define SDHCI_CLOCK_BASE_MASK GENMASK(13, 8) +#define SDHCI_CLOCK_BASE_SHIFT 8 #define SDHCI_CLOCK_V3_BASE_MASK GENMASK(15, 8) #define SDHCI_MAX_BLOCK_MASK 0x00030000 #define SDHCI_MAX_BLOCK_SHIFT 16