2 * linux/arch/arm/mach-omap2/hsmmc.c
4 * Copyright (C) 2007-2008 Texas Instruments
5 * Copyright (C) 2008 Nokia Corporation
6 * Author: Texas Instruments
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 #include <linux/kernel.h>
13 #include <linux/slab.h>
14 #include <linux/string.h>
15 #include <linux/delay.h>
16 #include <linux/mmc/host.h>
17 #include <linux/platform_data/hsmmc-omap.h>
20 #include "omap_device.h"
25 #if IS_ENABLED(CONFIG_MMC_OMAP_HS)
27 static u16 control_pbias_offset;
28 static u16 control_devconf1_offset;
30 #define HSMMC_NAME_LEN 9
32 static int __init omap_hsmmc_pdata_init(struct omap2_hsmmc_info *c,
33 struct omap_hsmmc_platform_data *mmc)
37 hc_name = kzalloc(HSMMC_NAME_LEN + 1, GFP_KERNEL);
43 snprintf(hc_name, (HSMMC_NAME_LEN + 1), "mmc%islot%i", c->mmc, 1);
51 static int omap_hsmmc_done;
53 void omap_hsmmc_late_init(struct omap2_hsmmc_info *c)
55 struct platform_device *pdev;
67 res = omap_device_register(pdev);
69 pr_err("Could not late init MMC\n");
73 #define MAX_OMAP_MMC_HWMOD_NAME_LEN 16
75 static void __init omap_hsmmc_init_one(struct omap2_hsmmc_info *hsmmcinfo,
78 struct omap_hwmod *oh;
79 struct omap_hwmod *ohs[1];
80 struct omap_device *od;
81 struct platform_device *pdev;
82 char oh_name[MAX_OMAP_MMC_HWMOD_NAME_LEN];
83 struct omap_hsmmc_platform_data *mmc_data;
84 struct omap_hsmmc_dev_attr *mmc_dev_attr;
88 mmc_data = kzalloc(sizeof(*mmc_data), GFP_KERNEL);
92 res = omap_hsmmc_pdata_init(hsmmcinfo, mmc_data);
97 res = snprintf(oh_name, MAX_OMAP_MMC_HWMOD_NAME_LEN,
99 WARN(res >= MAX_OMAP_MMC_HWMOD_NAME_LEN,
100 "String buffer overflow in MMC%d device setup\n", ctrl_nr);
102 oh = omap_hwmod_lookup(oh_name);
104 pr_err("Could not look up %s\n", oh_name);
108 if (oh->dev_attr != NULL) {
109 mmc_dev_attr = oh->dev_attr;
110 mmc_data->controller_flags = mmc_dev_attr->flags;
113 pdev = platform_device_alloc(name, ctrl_nr - 1);
115 pr_err("Could not allocate pdev for %s\n", name);
118 dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id);
120 od = omap_device_alloc(pdev, ohs, 1);
122 pr_err("Could not allocate od for %s\n", name);
126 res = platform_device_add_data(pdev, mmc_data,
127 sizeof(struct omap_hsmmc_platform_data));
129 pr_err("Could not add pdata for %s\n", name);
133 hsmmcinfo->pdev = pdev;
135 res = omap_device_register(pdev);
137 pr_err("Could not register od for %s\n", name);
144 omap_device_delete(od);
147 platform_device_put(pdev);
150 kfree(mmc_data->name);
156 void __init omap_hsmmc_init(struct omap2_hsmmc_info *controllers)
163 if (cpu_is_omap2430()) {
164 control_pbias_offset = OMAP243X_CONTROL_PBIAS_LITE;
165 control_devconf1_offset = OMAP243X_CONTROL_DEVCONF1;
167 control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
168 control_devconf1_offset = OMAP343X_CONTROL_DEVCONF1;
171 for (; controllers->mmc; controllers++)
172 omap_hsmmc_init_one(controllers, controllers->mmc);