Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Synopsys DesignWare Multimedia Card Interface driver |
| 3 | * |
| 4 | * Copyright (C) 2009 NXP Semiconductors |
| 5 | * Copyright (C) 2009, 2010 Imagination Technologies Ltd. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
Thierry Reding | a3e2cd7 | 2013-01-21 11:09:11 +0100 | [diff] [blame] | 13 | #include <linux/err.h> |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 14 | #include <linux/interrupt.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/io.h> |
| 17 | #include <linux/irq.h> |
| 18 | #include <linux/platform_device.h> |
| 19 | #include <linux/slab.h> |
| 20 | #include <linux/mmc/host.h> |
| 21 | #include <linux/mmc/mmc.h> |
| 22 | #include <linux/mmc/dw_mmc.h> |
Thomas Abraham | c91eab4 | 2012-09-17 18:16:40 +0000 | [diff] [blame] | 23 | #include <linux/of.h> |
Addy Ke | f629ba2 | 2014-07-31 14:01:38 +0800 | [diff] [blame] | 24 | #include <linux/clk.h> |
Thomas Abraham | c91eab4 | 2012-09-17 18:16:40 +0000 | [diff] [blame] | 25 | |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 26 | #include "dw_mmc.h" |
Jingoo Han | 7725a52 | 2013-08-06 10:54:07 +0900 | [diff] [blame] | 27 | #include "dw_mmc-pltfm.h" |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 28 | |
Dinh Nguyen | ec1e5d7 | 2014-02-17 20:31:01 -0600 | [diff] [blame] | 29 | static void dw_mci_pltfm_prepare_command(struct dw_mci *host, u32 *cmdr) |
Heiko Stübner | c73e41c | 2013-06-27 11:55:35 -0400 | [diff] [blame] | 30 | { |
| 31 | *cmdr |= SDMMC_CMD_USE_HOLD_REG; |
| 32 | } |
| 33 | |
Dinh Nguyen | ec1e5d7 | 2014-02-17 20:31:01 -0600 | [diff] [blame] | 34 | static const struct dw_mci_drv_data socfpga_drv_data = { |
| 35 | .prepare_command = dw_mci_pltfm_prepare_command, |
Heiko Stübner | c73e41c | 2013-06-27 11:55:35 -0400 | [diff] [blame] | 36 | }; |
| 37 | |
Andrew Bresticker | 4d7c07c | 2014-11-13 10:50:21 -0800 | [diff] [blame] | 38 | static const struct dw_mci_drv_data pistachio_drv_data = { |
| 39 | .prepare_command = dw_mci_pltfm_prepare_command, |
| 40 | }; |
| 41 | |
Thomas Abraham | 800d78b | 2012-09-17 18:16:42 +0000 | [diff] [blame] | 42 | int dw_mci_pltfm_register(struct platform_device *pdev, |
Andy Shevchenko | bcc8766 | 2013-06-05 12:24:10 +0300 | [diff] [blame] | 43 | const struct dw_mci_drv_data *drv_data) |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 44 | { |
| 45 | struct dw_mci *host; |
| 46 | struct resource *regs; |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 47 | |
Thomas Abraham | bb8bdc7 | 2012-09-17 18:16:36 +0000 | [diff] [blame] | 48 | host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL); |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 49 | if (!host) |
| 50 | return -ENOMEM; |
| 51 | |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 52 | host->irq = platform_get_irq(pdev, 0); |
Thomas Abraham | bb8bdc7 | 2012-09-17 18:16:36 +0000 | [diff] [blame] | 53 | if (host->irq < 0) |
| 54 | return host->irq; |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 55 | |
Thomas Abraham | 800d78b | 2012-09-17 18:16:42 +0000 | [diff] [blame] | 56 | host->drv_data = drv_data; |
Thomas Abraham | 4a90920 | 2012-09-17 18:16:35 +0000 | [diff] [blame] | 57 | host->dev = &pdev->dev; |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 58 | host->irq_flags = 0; |
| 59 | host->pdata = pdev->dev.platform_data; |
Andy Shevchenko | bcc8766 | 2013-06-05 12:24:10 +0300 | [diff] [blame] | 60 | |
| 61 | regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Shawn Lin | 3fc7eae | 2015-09-16 14:41:23 +0800 | [diff] [blame] | 62 | /* Get registers' physical base address */ |
| 63 | host->phy_regs = (void *)(regs->start); |
Thierry Reding | a3e2cd7 | 2013-01-21 11:09:11 +0100 | [diff] [blame] | 64 | host->regs = devm_ioremap_resource(&pdev->dev, regs); |
| 65 | if (IS_ERR(host->regs)) |
| 66 | return PTR_ERR(host->regs); |
Thomas Abraham | bb8bdc7 | 2012-09-17 18:16:36 +0000 | [diff] [blame] | 67 | |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 68 | platform_set_drvdata(pdev, host); |
Andy Shevchenko | dd36980 | 2013-06-05 12:24:11 +0300 | [diff] [blame] | 69 | return dw_mci_probe(host); |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 70 | } |
Thomas Abraham | 17403f2 | 2012-09-17 18:16:41 +0000 | [diff] [blame] | 71 | EXPORT_SYMBOL_GPL(dw_mci_pltfm_register); |
| 72 | |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 73 | #ifdef CONFIG_PM_SLEEP |
| 74 | /* |
| 75 | * TODO: we should probably disable the clock to the card in the suspend path. |
| 76 | */ |
| 77 | static int dw_mci_pltfm_suspend(struct device *dev) |
| 78 | { |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 79 | struct dw_mci *host = dev_get_drvdata(dev); |
| 80 | |
Andy Shevchenko | dd36980 | 2013-06-05 12:24:11 +0300 | [diff] [blame] | 81 | return dw_mci_suspend(host); |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | static int dw_mci_pltfm_resume(struct device *dev) |
| 85 | { |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 86 | struct dw_mci *host = dev_get_drvdata(dev); |
| 87 | |
Andy Shevchenko | dd36980 | 2013-06-05 12:24:11 +0300 | [diff] [blame] | 88 | return dw_mci_resume(host); |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 89 | } |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 90 | #endif /* CONFIG_PM_SLEEP */ |
| 91 | |
Thomas Abraham | 17403f2 | 2012-09-17 18:16:41 +0000 | [diff] [blame] | 92 | SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume); |
| 93 | EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops); |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 94 | |
Thomas Abraham | c91eab4 | 2012-09-17 18:16:40 +0000 | [diff] [blame] | 95 | static const struct of_device_id dw_mci_pltfm_match[] = { |
| 96 | { .compatible = "snps,dw-mshc", }, |
Dinh Nguyen | ec1e5d7 | 2014-02-17 20:31:01 -0600 | [diff] [blame] | 97 | { .compatible = "altr,socfpga-dw-mshc", |
| 98 | .data = &socfpga_drv_data }, |
Andrew Bresticker | 4d7c07c | 2014-11-13 10:50:21 -0800 | [diff] [blame] | 99 | { .compatible = "img,pistachio-dw-mshc", |
| 100 | .data = &pistachio_drv_data }, |
Thomas Abraham | c91eab4 | 2012-09-17 18:16:40 +0000 | [diff] [blame] | 101 | {}, |
| 102 | }; |
| 103 | MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match); |
| 104 | |
Heiko Stübner | b177a53 | 2013-06-13 10:57:01 +0200 | [diff] [blame] | 105 | static int dw_mci_pltfm_probe(struct platform_device *pdev) |
| 106 | { |
Heiko Stübner | c73e41c | 2013-06-27 11:55:35 -0400 | [diff] [blame] | 107 | const struct dw_mci_drv_data *drv_data = NULL; |
| 108 | const struct of_device_id *match; |
| 109 | |
| 110 | if (pdev->dev.of_node) { |
| 111 | match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node); |
| 112 | drv_data = match->data; |
| 113 | } |
| 114 | |
| 115 | return dw_mci_pltfm_register(pdev, drv_data); |
Heiko Stübner | b177a53 | 2013-06-13 10:57:01 +0200 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | int dw_mci_pltfm_remove(struct platform_device *pdev) |
| 119 | { |
| 120 | struct dw_mci *host = platform_get_drvdata(pdev); |
| 121 | |
| 122 | dw_mci_remove(host); |
| 123 | return 0; |
| 124 | } |
| 125 | EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove); |
| 126 | |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 127 | static struct platform_driver dw_mci_pltfm_driver = { |
Andy Shevchenko | 49480cf | 2012-10-03 16:26:37 +0300 | [diff] [blame] | 128 | .probe = dw_mci_pltfm_probe, |
Greg Kroah-Hartman | 4e608e4 | 2012-12-21 15:05:47 -0800 | [diff] [blame] | 129 | .remove = dw_mci_pltfm_remove, |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 130 | .driver = { |
| 131 | .name = "dw_mmc", |
Sachin Kamat | cf109bc | 2014-02-25 15:18:23 +0530 | [diff] [blame] | 132 | .of_match_table = dw_mci_pltfm_match, |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 133 | .pm = &dw_mci_pltfm_pmops, |
| 134 | }, |
| 135 | }; |
| 136 | |
Andy Shevchenko | 49480cf | 2012-10-03 16:26:37 +0300 | [diff] [blame] | 137 | module_platform_driver(dw_mci_pltfm_driver); |
Shashidhar Hiremath | 62ca803 | 2012-01-13 16:04:57 +0530 | [diff] [blame] | 138 | |
| 139 | MODULE_DESCRIPTION("DW Multimedia Card Interface driver"); |
| 140 | MODULE_AUTHOR("NXP Semiconductor VietNam"); |
| 141 | MODULE_AUTHOR("Imagination Technologies Ltd"); |
| 142 | MODULE_LICENSE("GPL v2"); |