Commit 98b5ce4c authored by Al Cooper's avatar Al Cooper Committed by Ulf Hansson
Browse files

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: default avatarAl Cooper <alcooperx@gmail.com>
Link: https://lore.kernel.org/r/20210602192758.38735-2-alcooperx@gmail.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 09a8ec9a

drivers/mmc/host/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -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

drivers/mmc/host/sdhci-iproc.c

+30 −0
Original line number Diff line number Diff line
@@ -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);

drivers/mmc/host/sdhci.h

+2 −0
Original line number Diff line number Diff line
@@ -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