Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2018 Mellanox Technologies.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/bitfield.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/mmc/host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/mmc/mmc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "dw_mmc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "dw_mmc-pltfm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define UHS_REG_EXT_SAMPLE_MASK		GENMASK(22, 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define UHS_REG_EXT_DRIVE_MASK		GENMASK(29, 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define BLUEFIELD_UHS_REG_EXT_SAMPLE	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define BLUEFIELD_UHS_REG_EXT_DRIVE	4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static void dw_mci_bluefield_set_ios(struct dw_mci *host, struct mmc_ios *ios)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	u32 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	/* Update the Drive and Sample fields in register UHS_REG_EXT. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	reg = mci_readl(host, UHS_REG_EXT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	reg &= ~UHS_REG_EXT_SAMPLE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	reg |= FIELD_PREP(UHS_REG_EXT_SAMPLE_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 			  BLUEFIELD_UHS_REG_EXT_SAMPLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	reg &= ~UHS_REG_EXT_DRIVE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	reg |= FIELD_PREP(UHS_REG_EXT_DRIVE_MASK, BLUEFIELD_UHS_REG_EXT_DRIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	mci_writel(host, UHS_REG_EXT, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static const struct dw_mci_drv_data bluefield_drv_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	.set_ios		= dw_mci_bluefield_set_ios
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static const struct of_device_id dw_mci_bluefield_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	{ .compatible = "mellanox,bluefield-dw-mshc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	  .data = &bluefield_drv_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) MODULE_DEVICE_TABLE(of, dw_mci_bluefield_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static int dw_mci_bluefield_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	return dw_mci_pltfm_register(pdev, &bluefield_drv_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static struct platform_driver dw_mci_bluefield_pltfm_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	.probe		= dw_mci_bluefield_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	.remove		= dw_mci_pltfm_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	.driver		= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		.name		= "dwmmc_bluefield",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 		.probe_type	= PROBE_PREFER_ASYNCHRONOUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 		.of_match_table	= dw_mci_bluefield_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 		.pm		= &dw_mci_pltfm_pmops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) module_platform_driver(dw_mci_bluefield_pltfm_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) MODULE_DESCRIPTION("BlueField DW Multimedia Card driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) MODULE_AUTHOR("Mellanox Technologies");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) MODULE_LICENSE("GPL v2");