1126512e3SAnatolij Gustschin /* 2126512e3SAnatolij Gustschin * Setup platform devices needed by the Freescale multi-port host 3126512e3SAnatolij Gustschin * and/or dual-role USB controller modules based on the description 4126512e3SAnatolij Gustschin * in flat device tree. 5126512e3SAnatolij Gustschin * 6126512e3SAnatolij Gustschin * This program is free software; you can redistribute it and/or modify it 7126512e3SAnatolij Gustschin * under the terms of the GNU General Public License as published by the 8126512e3SAnatolij Gustschin * Free Software Foundation; either version 2 of the License, or (at your 9126512e3SAnatolij Gustschin * option) any later version. 10126512e3SAnatolij Gustschin */ 11126512e3SAnatolij Gustschin 12126512e3SAnatolij Gustschin #include <linux/kernel.h> 13126512e3SAnatolij Gustschin #include <linux/platform_device.h> 14126512e3SAnatolij Gustschin #include <linux/fsl_devices.h> 15126512e3SAnatolij Gustschin #include <linux/err.h> 16126512e3SAnatolij Gustschin #include <linux/io.h> 17126512e3SAnatolij Gustschin #include <linux/of_platform.h> 18126512e3SAnatolij Gustschin 19126512e3SAnatolij Gustschin struct fsl_usb2_dev_data { 20126512e3SAnatolij Gustschin char *dr_mode; /* controller mode */ 21126512e3SAnatolij Gustschin char *drivers[3]; /* drivers to instantiate for this mode */ 22126512e3SAnatolij Gustschin enum fsl_usb2_operating_modes op_mode; /* operating mode */ 23126512e3SAnatolij Gustschin }; 24126512e3SAnatolij Gustschin 25126512e3SAnatolij Gustschin struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = { 26126512e3SAnatolij Gustschin { 27126512e3SAnatolij Gustschin .dr_mode = "host", 28126512e3SAnatolij Gustschin .drivers = { "fsl-ehci", NULL, NULL, }, 29126512e3SAnatolij Gustschin .op_mode = FSL_USB2_DR_HOST, 30126512e3SAnatolij Gustschin }, 31126512e3SAnatolij Gustschin { 32126512e3SAnatolij Gustschin .dr_mode = "otg", 33126512e3SAnatolij Gustschin .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", }, 34126512e3SAnatolij Gustschin .op_mode = FSL_USB2_DR_OTG, 35126512e3SAnatolij Gustschin }, 36126512e3SAnatolij Gustschin { 37126512e3SAnatolij Gustschin .dr_mode = "peripheral", 38126512e3SAnatolij Gustschin .drivers = { "fsl-usb2-udc", NULL, NULL, }, 39126512e3SAnatolij Gustschin .op_mode = FSL_USB2_DR_DEVICE, 40126512e3SAnatolij Gustschin }, 41126512e3SAnatolij Gustschin }; 42126512e3SAnatolij Gustschin 43126512e3SAnatolij Gustschin struct fsl_usb2_dev_data * __devinit get_dr_mode_data(struct device_node *np) 44126512e3SAnatolij Gustschin { 45126512e3SAnatolij Gustschin const unsigned char *prop; 46126512e3SAnatolij Gustschin int i; 47126512e3SAnatolij Gustschin 48126512e3SAnatolij Gustschin prop = of_get_property(np, "dr_mode", NULL); 49126512e3SAnatolij Gustschin if (prop) { 50126512e3SAnatolij Gustschin for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) { 51126512e3SAnatolij Gustschin if (!strcmp(prop, dr_mode_data[i].dr_mode)) 52126512e3SAnatolij Gustschin return &dr_mode_data[i]; 53126512e3SAnatolij Gustschin } 54126512e3SAnatolij Gustschin } 55126512e3SAnatolij Gustschin pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n", 56126512e3SAnatolij Gustschin np->full_name); 57126512e3SAnatolij Gustschin return &dr_mode_data[0]; /* mode not specified, use host */ 58126512e3SAnatolij Gustschin } 59126512e3SAnatolij Gustschin 60126512e3SAnatolij Gustschin static enum fsl_usb2_phy_modes __devinit determine_usb_phy(const char *phy_type) 61126512e3SAnatolij Gustschin { 62126512e3SAnatolij Gustschin if (!phy_type) 63126512e3SAnatolij Gustschin return FSL_USB2_PHY_NONE; 64126512e3SAnatolij Gustschin if (!strcasecmp(phy_type, "ulpi")) 65126512e3SAnatolij Gustschin return FSL_USB2_PHY_ULPI; 66126512e3SAnatolij Gustschin if (!strcasecmp(phy_type, "utmi")) 67126512e3SAnatolij Gustschin return FSL_USB2_PHY_UTMI; 68126512e3SAnatolij Gustschin if (!strcasecmp(phy_type, "utmi_wide")) 69126512e3SAnatolij Gustschin return FSL_USB2_PHY_UTMI_WIDE; 70126512e3SAnatolij Gustschin if (!strcasecmp(phy_type, "serial")) 71126512e3SAnatolij Gustschin return FSL_USB2_PHY_SERIAL; 72126512e3SAnatolij Gustschin 73126512e3SAnatolij Gustschin return FSL_USB2_PHY_NONE; 74126512e3SAnatolij Gustschin } 75126512e3SAnatolij Gustschin 76126512e3SAnatolij Gustschin struct platform_device * __devinit fsl_usb2_device_register( 77126512e3SAnatolij Gustschin struct platform_device *ofdev, 78126512e3SAnatolij Gustschin struct fsl_usb2_platform_data *pdata, 79126512e3SAnatolij Gustschin const char *name, int id) 80126512e3SAnatolij Gustschin { 81126512e3SAnatolij Gustschin struct platform_device *pdev; 82126512e3SAnatolij Gustschin const struct resource *res = ofdev->resource; 83126512e3SAnatolij Gustschin unsigned int num = ofdev->num_resources; 84126512e3SAnatolij Gustschin int retval; 85126512e3SAnatolij Gustschin 86126512e3SAnatolij Gustschin pdev = platform_device_alloc(name, id); 87126512e3SAnatolij Gustschin if (!pdev) { 88126512e3SAnatolij Gustschin retval = -ENOMEM; 89126512e3SAnatolij Gustschin goto error; 90126512e3SAnatolij Gustschin } 91126512e3SAnatolij Gustschin 92126512e3SAnatolij Gustschin pdev->dev.parent = &ofdev->dev; 93126512e3SAnatolij Gustschin 94126512e3SAnatolij Gustschin pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask; 95126512e3SAnatolij Gustschin pdev->dev.dma_mask = &pdev->archdata.dma_mask; 96126512e3SAnatolij Gustschin *pdev->dev.dma_mask = *ofdev->dev.dma_mask; 97126512e3SAnatolij Gustschin 98126512e3SAnatolij Gustschin retval = platform_device_add_data(pdev, pdata, sizeof(*pdata)); 99126512e3SAnatolij Gustschin if (retval) 100126512e3SAnatolij Gustschin goto error; 101126512e3SAnatolij Gustschin 102126512e3SAnatolij Gustschin if (num) { 103126512e3SAnatolij Gustschin retval = platform_device_add_resources(pdev, res, num); 104126512e3SAnatolij Gustschin if (retval) 105126512e3SAnatolij Gustschin goto error; 106126512e3SAnatolij Gustschin } 107126512e3SAnatolij Gustschin 108126512e3SAnatolij Gustschin retval = platform_device_add(pdev); 109126512e3SAnatolij Gustschin if (retval) 110126512e3SAnatolij Gustschin goto error; 111126512e3SAnatolij Gustschin 112126512e3SAnatolij Gustschin return pdev; 113126512e3SAnatolij Gustschin 114126512e3SAnatolij Gustschin error: 115126512e3SAnatolij Gustschin platform_device_put(pdev); 116126512e3SAnatolij Gustschin return ERR_PTR(retval); 117126512e3SAnatolij Gustschin } 118126512e3SAnatolij Gustschin 119126512e3SAnatolij Gustschin static const struct of_device_id fsl_usb2_mph_dr_of_match[]; 120126512e3SAnatolij Gustschin 121126512e3SAnatolij Gustschin static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) 122126512e3SAnatolij Gustschin { 123126512e3SAnatolij Gustschin struct device_node *np = ofdev->dev.of_node; 124126512e3SAnatolij Gustschin struct platform_device *usb_dev; 125126512e3SAnatolij Gustschin struct fsl_usb2_platform_data data, *pdata; 126126512e3SAnatolij Gustschin struct fsl_usb2_dev_data *dev_data; 127126512e3SAnatolij Gustschin const struct of_device_id *match; 128126512e3SAnatolij Gustschin const unsigned char *prop; 129126512e3SAnatolij Gustschin static unsigned int idx; 130126512e3SAnatolij Gustschin int i; 131126512e3SAnatolij Gustschin 132126512e3SAnatolij Gustschin if (!of_device_is_available(np)) 133126512e3SAnatolij Gustschin return -ENODEV; 134126512e3SAnatolij Gustschin 135126512e3SAnatolij Gustschin match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev); 136126512e3SAnatolij Gustschin if (!match) 137126512e3SAnatolij Gustschin return -ENODEV; 138126512e3SAnatolij Gustschin 139126512e3SAnatolij Gustschin pdata = &data; 140126512e3SAnatolij Gustschin if (match->data) 141126512e3SAnatolij Gustschin memcpy(pdata, match->data, sizeof(data)); 142126512e3SAnatolij Gustschin else 143126512e3SAnatolij Gustschin memset(pdata, 0, sizeof(data)); 144126512e3SAnatolij Gustschin 145126512e3SAnatolij Gustschin dev_data = get_dr_mode_data(np); 146126512e3SAnatolij Gustschin 147126512e3SAnatolij Gustschin if (of_device_is_compatible(np, "fsl-usb2-mph")) { 148126512e3SAnatolij Gustschin if (of_get_property(np, "port0", NULL)) 149126512e3SAnatolij Gustschin pdata->port_enables |= FSL_USB2_PORT0_ENABLED; 150126512e3SAnatolij Gustschin 151126512e3SAnatolij Gustschin if (of_get_property(np, "port1", NULL)) 152126512e3SAnatolij Gustschin pdata->port_enables |= FSL_USB2_PORT1_ENABLED; 153126512e3SAnatolij Gustschin 154126512e3SAnatolij Gustschin pdata->operating_mode = FSL_USB2_MPH_HOST; 155126512e3SAnatolij Gustschin } else { 156126512e3SAnatolij Gustschin /* setup mode selected in the device tree */ 157126512e3SAnatolij Gustschin pdata->operating_mode = dev_data->op_mode; 158126512e3SAnatolij Gustschin } 159126512e3SAnatolij Gustschin 160126512e3SAnatolij Gustschin prop = of_get_property(np, "phy_type", NULL); 161126512e3SAnatolij Gustschin pdata->phy_mode = determine_usb_phy(prop); 162126512e3SAnatolij Gustschin 163126512e3SAnatolij Gustschin for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) { 164126512e3SAnatolij Gustschin if (!dev_data->drivers[i]) 165126512e3SAnatolij Gustschin continue; 166126512e3SAnatolij Gustschin usb_dev = fsl_usb2_device_register(ofdev, pdata, 167126512e3SAnatolij Gustschin dev_data->drivers[i], idx); 168126512e3SAnatolij Gustschin if (IS_ERR(usb_dev)) { 169126512e3SAnatolij Gustschin dev_err(&ofdev->dev, "Can't register usb device\n"); 170126512e3SAnatolij Gustschin return PTR_ERR(usb_dev); 171126512e3SAnatolij Gustschin } 172126512e3SAnatolij Gustschin } 173126512e3SAnatolij Gustschin idx++; 174126512e3SAnatolij Gustschin return 0; 175126512e3SAnatolij Gustschin } 176126512e3SAnatolij Gustschin 177126512e3SAnatolij Gustschin static int __devexit __unregister_subdev(struct device *dev, void *d) 178126512e3SAnatolij Gustschin { 179126512e3SAnatolij Gustschin platform_device_unregister(to_platform_device(dev)); 180126512e3SAnatolij Gustschin return 0; 181126512e3SAnatolij Gustschin } 182126512e3SAnatolij Gustschin 183126512e3SAnatolij Gustschin static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev) 184126512e3SAnatolij Gustschin { 185126512e3SAnatolij Gustschin device_for_each_child(&ofdev->dev, NULL, __unregister_subdev); 186126512e3SAnatolij Gustschin return 0; 187126512e3SAnatolij Gustschin } 188126512e3SAnatolij Gustschin 189126512e3SAnatolij Gustschin static const struct of_device_id fsl_usb2_mph_dr_of_match[] = { 190126512e3SAnatolij Gustschin { .compatible = "fsl-usb2-mph", }, 191126512e3SAnatolij Gustschin { .compatible = "fsl-usb2-dr", }, 192126512e3SAnatolij Gustschin {}, 193126512e3SAnatolij Gustschin }; 194126512e3SAnatolij Gustschin 195126512e3SAnatolij Gustschin static struct platform_driver fsl_usb2_mph_dr_driver = { 196126512e3SAnatolij Gustschin .driver = { 197126512e3SAnatolij Gustschin .name = "fsl-usb2-mph-dr", 198126512e3SAnatolij Gustschin .owner = THIS_MODULE, 199126512e3SAnatolij Gustschin .of_match_table = fsl_usb2_mph_dr_of_match, 200126512e3SAnatolij Gustschin }, 201126512e3SAnatolij Gustschin .probe = fsl_usb2_mph_dr_of_probe, 202126512e3SAnatolij Gustschin .remove = __devexit_p(fsl_usb2_mph_dr_of_remove), 203126512e3SAnatolij Gustschin }; 204126512e3SAnatolij Gustschin 205126512e3SAnatolij Gustschin static int __init fsl_usb2_mph_dr_init(void) 206126512e3SAnatolij Gustschin { 207126512e3SAnatolij Gustschin return platform_driver_register(&fsl_usb2_mph_dr_driver); 208126512e3SAnatolij Gustschin } 209126512e3SAnatolij Gustschin module_init(fsl_usb2_mph_dr_init); 210126512e3SAnatolij Gustschin 211126512e3SAnatolij Gustschin static void __exit fsl_usb2_mph_dr_exit(void) 212126512e3SAnatolij Gustschin { 213126512e3SAnatolij Gustschin platform_driver_unregister(&fsl_usb2_mph_dr_driver); 214126512e3SAnatolij Gustschin } 215126512e3SAnatolij Gustschin module_exit(fsl_usb2_mph_dr_exit); 216126512e3SAnatolij Gustschin 217126512e3SAnatolij Gustschin MODULE_DESCRIPTION("FSL MPH DR OF devices driver"); 218126512e3SAnatolij Gustschin MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>"); 219126512e3SAnatolij Gustschin MODULE_LICENSE("GPL"); 220