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> 18230f7edeSAnatolij Gustschin #include <linux/clk.h> 19126512e3SAnatolij Gustschin 20126512e3SAnatolij Gustschin struct fsl_usb2_dev_data { 21126512e3SAnatolij Gustschin char *dr_mode; /* controller mode */ 22126512e3SAnatolij Gustschin char *drivers[3]; /* drivers to instantiate for this mode */ 23126512e3SAnatolij Gustschin enum fsl_usb2_operating_modes op_mode; /* operating mode */ 24126512e3SAnatolij Gustschin }; 25126512e3SAnatolij Gustschin 26126512e3SAnatolij Gustschin struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = { 27126512e3SAnatolij Gustschin { 28126512e3SAnatolij Gustschin .dr_mode = "host", 29126512e3SAnatolij Gustschin .drivers = { "fsl-ehci", NULL, NULL, }, 30126512e3SAnatolij Gustschin .op_mode = FSL_USB2_DR_HOST, 31126512e3SAnatolij Gustschin }, 32126512e3SAnatolij Gustschin { 33126512e3SAnatolij Gustschin .dr_mode = "otg", 34126512e3SAnatolij Gustschin .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", }, 35126512e3SAnatolij Gustschin .op_mode = FSL_USB2_DR_OTG, 36126512e3SAnatolij Gustschin }, 37126512e3SAnatolij Gustschin { 38126512e3SAnatolij Gustschin .dr_mode = "peripheral", 39126512e3SAnatolij Gustschin .drivers = { "fsl-usb2-udc", NULL, NULL, }, 40126512e3SAnatolij Gustschin .op_mode = FSL_USB2_DR_DEVICE, 41126512e3SAnatolij Gustschin }, 42126512e3SAnatolij Gustschin }; 43126512e3SAnatolij Gustschin 44126512e3SAnatolij Gustschin struct fsl_usb2_dev_data * __devinit get_dr_mode_data(struct device_node *np) 45126512e3SAnatolij Gustschin { 46126512e3SAnatolij Gustschin const unsigned char *prop; 47126512e3SAnatolij Gustschin int i; 48126512e3SAnatolij Gustschin 49126512e3SAnatolij Gustschin prop = of_get_property(np, "dr_mode", NULL); 50126512e3SAnatolij Gustschin if (prop) { 51126512e3SAnatolij Gustschin for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) { 52126512e3SAnatolij Gustschin if (!strcmp(prop, dr_mode_data[i].dr_mode)) 53126512e3SAnatolij Gustschin return &dr_mode_data[i]; 54126512e3SAnatolij Gustschin } 55126512e3SAnatolij Gustschin } 56126512e3SAnatolij Gustschin pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n", 57126512e3SAnatolij Gustschin np->full_name); 58126512e3SAnatolij Gustschin return &dr_mode_data[0]; /* mode not specified, use host */ 59126512e3SAnatolij Gustschin } 60126512e3SAnatolij Gustschin 61126512e3SAnatolij Gustschin static enum fsl_usb2_phy_modes __devinit determine_usb_phy(const char *phy_type) 62126512e3SAnatolij Gustschin { 63126512e3SAnatolij Gustschin if (!phy_type) 64126512e3SAnatolij Gustschin return FSL_USB2_PHY_NONE; 65126512e3SAnatolij Gustschin if (!strcasecmp(phy_type, "ulpi")) 66126512e3SAnatolij Gustschin return FSL_USB2_PHY_ULPI; 67126512e3SAnatolij Gustschin if (!strcasecmp(phy_type, "utmi")) 68126512e3SAnatolij Gustschin return FSL_USB2_PHY_UTMI; 69126512e3SAnatolij Gustschin if (!strcasecmp(phy_type, "utmi_wide")) 70126512e3SAnatolij Gustschin return FSL_USB2_PHY_UTMI_WIDE; 71126512e3SAnatolij Gustschin if (!strcasecmp(phy_type, "serial")) 72126512e3SAnatolij Gustschin return FSL_USB2_PHY_SERIAL; 73126512e3SAnatolij Gustschin 74126512e3SAnatolij Gustschin return FSL_USB2_PHY_NONE; 75126512e3SAnatolij Gustschin } 76126512e3SAnatolij Gustschin 77126512e3SAnatolij Gustschin struct platform_device * __devinit fsl_usb2_device_register( 78126512e3SAnatolij Gustschin struct platform_device *ofdev, 79126512e3SAnatolij Gustschin struct fsl_usb2_platform_data *pdata, 80126512e3SAnatolij Gustschin const char *name, int id) 81126512e3SAnatolij Gustschin { 82126512e3SAnatolij Gustschin struct platform_device *pdev; 83126512e3SAnatolij Gustschin const struct resource *res = ofdev->resource; 84126512e3SAnatolij Gustschin unsigned int num = ofdev->num_resources; 85126512e3SAnatolij Gustschin int retval; 86126512e3SAnatolij Gustschin 87126512e3SAnatolij Gustschin pdev = platform_device_alloc(name, id); 88126512e3SAnatolij Gustschin if (!pdev) { 89126512e3SAnatolij Gustschin retval = -ENOMEM; 90126512e3SAnatolij Gustschin goto error; 91126512e3SAnatolij Gustschin } 92126512e3SAnatolij Gustschin 93126512e3SAnatolij Gustschin pdev->dev.parent = &ofdev->dev; 94126512e3SAnatolij Gustschin 95126512e3SAnatolij Gustschin pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask; 96126512e3SAnatolij Gustschin pdev->dev.dma_mask = &pdev->archdata.dma_mask; 97126512e3SAnatolij Gustschin *pdev->dev.dma_mask = *ofdev->dev.dma_mask; 98126512e3SAnatolij Gustschin 99126512e3SAnatolij Gustschin retval = platform_device_add_data(pdev, pdata, sizeof(*pdata)); 100126512e3SAnatolij Gustschin if (retval) 101126512e3SAnatolij Gustschin goto error; 102126512e3SAnatolij Gustschin 103126512e3SAnatolij Gustschin if (num) { 104126512e3SAnatolij Gustschin retval = platform_device_add_resources(pdev, res, num); 105126512e3SAnatolij Gustschin if (retval) 106126512e3SAnatolij Gustschin goto error; 107126512e3SAnatolij Gustschin } 108126512e3SAnatolij Gustschin 109126512e3SAnatolij Gustschin retval = platform_device_add(pdev); 110126512e3SAnatolij Gustschin if (retval) 111126512e3SAnatolij Gustschin goto error; 112126512e3SAnatolij Gustschin 113126512e3SAnatolij Gustschin return pdev; 114126512e3SAnatolij Gustschin 115126512e3SAnatolij Gustschin error: 116126512e3SAnatolij Gustschin platform_device_put(pdev); 117126512e3SAnatolij Gustschin return ERR_PTR(retval); 118126512e3SAnatolij Gustschin } 119126512e3SAnatolij Gustschin 120126512e3SAnatolij Gustschin static const struct of_device_id fsl_usb2_mph_dr_of_match[]; 121126512e3SAnatolij Gustschin 122126512e3SAnatolij Gustschin static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) 123126512e3SAnatolij Gustschin { 124126512e3SAnatolij Gustschin struct device_node *np = ofdev->dev.of_node; 125126512e3SAnatolij Gustschin struct platform_device *usb_dev; 126126512e3SAnatolij Gustschin struct fsl_usb2_platform_data data, *pdata; 127126512e3SAnatolij Gustschin struct fsl_usb2_dev_data *dev_data; 128126512e3SAnatolij Gustschin const struct of_device_id *match; 129126512e3SAnatolij Gustschin const unsigned char *prop; 130126512e3SAnatolij Gustschin static unsigned int idx; 131126512e3SAnatolij Gustschin int i; 132126512e3SAnatolij Gustschin 133126512e3SAnatolij Gustschin if (!of_device_is_available(np)) 134126512e3SAnatolij Gustschin return -ENODEV; 135126512e3SAnatolij Gustschin 136126512e3SAnatolij Gustschin match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev); 137126512e3SAnatolij Gustschin if (!match) 138126512e3SAnatolij Gustschin return -ENODEV; 139126512e3SAnatolij Gustschin 140126512e3SAnatolij Gustschin pdata = &data; 141126512e3SAnatolij Gustschin if (match->data) 142126512e3SAnatolij Gustschin memcpy(pdata, match->data, sizeof(data)); 143126512e3SAnatolij Gustschin else 144126512e3SAnatolij Gustschin memset(pdata, 0, sizeof(data)); 145126512e3SAnatolij Gustschin 146126512e3SAnatolij Gustschin dev_data = get_dr_mode_data(np); 147126512e3SAnatolij Gustschin 148126512e3SAnatolij Gustschin if (of_device_is_compatible(np, "fsl-usb2-mph")) { 149126512e3SAnatolij Gustschin if (of_get_property(np, "port0", NULL)) 150126512e3SAnatolij Gustschin pdata->port_enables |= FSL_USB2_PORT0_ENABLED; 151126512e3SAnatolij Gustschin 152126512e3SAnatolij Gustschin if (of_get_property(np, "port1", NULL)) 153126512e3SAnatolij Gustschin pdata->port_enables |= FSL_USB2_PORT1_ENABLED; 154126512e3SAnatolij Gustschin 155126512e3SAnatolij Gustschin pdata->operating_mode = FSL_USB2_MPH_HOST; 156126512e3SAnatolij Gustschin } else { 157230f7edeSAnatolij Gustschin if (of_get_property(np, "fsl,invert-drvvbus", NULL)) 158230f7edeSAnatolij Gustschin pdata->invert_drvvbus = 1; 159230f7edeSAnatolij Gustschin 160230f7edeSAnatolij Gustschin if (of_get_property(np, "fsl,invert-pwr-fault", NULL)) 161230f7edeSAnatolij Gustschin pdata->invert_pwr_fault = 1; 162230f7edeSAnatolij Gustschin 163126512e3SAnatolij Gustschin /* setup mode selected in the device tree */ 164126512e3SAnatolij Gustschin pdata->operating_mode = dev_data->op_mode; 165126512e3SAnatolij Gustschin } 166126512e3SAnatolij Gustschin 167126512e3SAnatolij Gustschin prop = of_get_property(np, "phy_type", NULL); 168126512e3SAnatolij Gustschin pdata->phy_mode = determine_usb_phy(prop); 169126512e3SAnatolij Gustschin 170126512e3SAnatolij Gustschin for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) { 171126512e3SAnatolij Gustschin if (!dev_data->drivers[i]) 172126512e3SAnatolij Gustschin continue; 173126512e3SAnatolij Gustschin usb_dev = fsl_usb2_device_register(ofdev, pdata, 174126512e3SAnatolij Gustschin dev_data->drivers[i], idx); 175126512e3SAnatolij Gustschin if (IS_ERR(usb_dev)) { 176126512e3SAnatolij Gustschin dev_err(&ofdev->dev, "Can't register usb device\n"); 177126512e3SAnatolij Gustschin return PTR_ERR(usb_dev); 178126512e3SAnatolij Gustschin } 179126512e3SAnatolij Gustschin } 180126512e3SAnatolij Gustschin idx++; 181126512e3SAnatolij Gustschin return 0; 182126512e3SAnatolij Gustschin } 183126512e3SAnatolij Gustschin 184126512e3SAnatolij Gustschin static int __devexit __unregister_subdev(struct device *dev, void *d) 185126512e3SAnatolij Gustschin { 186126512e3SAnatolij Gustschin platform_device_unregister(to_platform_device(dev)); 187126512e3SAnatolij Gustschin return 0; 188126512e3SAnatolij Gustschin } 189126512e3SAnatolij Gustschin 190126512e3SAnatolij Gustschin static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev) 191126512e3SAnatolij Gustschin { 192126512e3SAnatolij Gustschin device_for_each_child(&ofdev->dev, NULL, __unregister_subdev); 193126512e3SAnatolij Gustschin return 0; 194126512e3SAnatolij Gustschin } 195126512e3SAnatolij Gustschin 196230f7edeSAnatolij Gustschin #ifdef CONFIG_PPC_MPC512x 197230f7edeSAnatolij Gustschin 198230f7edeSAnatolij Gustschin #define USBGENCTRL 0x200 /* NOTE: big endian */ 199230f7edeSAnatolij Gustschin #define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */ 200230f7edeSAnatolij Gustschin #define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/ 201230f7edeSAnatolij Gustschin #define GC_PPP (1 << 3) /* Inv. Port Power Polarity */ 202230f7edeSAnatolij Gustschin #define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */ 203230f7edeSAnatolij Gustschin #define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */ 204230f7edeSAnatolij Gustschin #define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */ 205230f7edeSAnatolij Gustschin 206230f7edeSAnatolij Gustschin #define ISIPHYCTRL 0x204 /* NOTE: big endian */ 207230f7edeSAnatolij Gustschin #define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */ 208230f7edeSAnatolij Gustschin #define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */ 209230f7edeSAnatolij Gustschin #define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */ 210230f7edeSAnatolij Gustschin #define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */ 211230f7edeSAnatolij Gustschin #define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */ 212230f7edeSAnatolij Gustschin 213230f7edeSAnatolij Gustschin int fsl_usb2_mpc5121_init(struct platform_device *pdev) 214230f7edeSAnatolij Gustschin { 215230f7edeSAnatolij Gustschin struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; 216230f7edeSAnatolij Gustschin struct clk *clk; 217230f7edeSAnatolij Gustschin char clk_name[10]; 218230f7edeSAnatolij Gustschin int base, clk_num; 219230f7edeSAnatolij Gustschin 220230f7edeSAnatolij Gustschin base = pdev->resource->start & 0xf000; 221230f7edeSAnatolij Gustschin if (base == 0x3000) 222230f7edeSAnatolij Gustschin clk_num = 1; 223230f7edeSAnatolij Gustschin else if (base == 0x4000) 224230f7edeSAnatolij Gustschin clk_num = 2; 225230f7edeSAnatolij Gustschin else 226230f7edeSAnatolij Gustschin return -ENODEV; 227230f7edeSAnatolij Gustschin 228230f7edeSAnatolij Gustschin snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num); 229230f7edeSAnatolij Gustschin clk = clk_get(&pdev->dev, clk_name); 230230f7edeSAnatolij Gustschin if (IS_ERR(clk)) { 231230f7edeSAnatolij Gustschin dev_err(&pdev->dev, "failed to get clk\n"); 232230f7edeSAnatolij Gustschin return PTR_ERR(clk); 233230f7edeSAnatolij Gustschin } 234230f7edeSAnatolij Gustschin 235230f7edeSAnatolij Gustschin clk_enable(clk); 236230f7edeSAnatolij Gustschin pdata->clk = clk; 237230f7edeSAnatolij Gustschin 238230f7edeSAnatolij Gustschin if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) { 239230f7edeSAnatolij Gustschin u32 reg = 0; 240230f7edeSAnatolij Gustschin 241230f7edeSAnatolij Gustschin if (pdata->invert_drvvbus) 242230f7edeSAnatolij Gustschin reg |= GC_PPP; 243230f7edeSAnatolij Gustschin 244230f7edeSAnatolij Gustschin if (pdata->invert_pwr_fault) 245230f7edeSAnatolij Gustschin reg |= GC_PFP; 246230f7edeSAnatolij Gustschin 247230f7edeSAnatolij Gustschin out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE); 248230f7edeSAnatolij Gustschin out_be32(pdata->regs + USBGENCTRL, reg); 249230f7edeSAnatolij Gustschin } 250230f7edeSAnatolij Gustschin return 0; 251230f7edeSAnatolij Gustschin } 252230f7edeSAnatolij Gustschin 253230f7edeSAnatolij Gustschin static void fsl_usb2_mpc5121_exit(struct platform_device *pdev) 254230f7edeSAnatolij Gustschin { 255230f7edeSAnatolij Gustschin struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; 256230f7edeSAnatolij Gustschin 257230f7edeSAnatolij Gustschin pdata->regs = NULL; 258230f7edeSAnatolij Gustschin 259230f7edeSAnatolij Gustschin if (pdata->clk) { 260230f7edeSAnatolij Gustschin clk_disable(pdata->clk); 261230f7edeSAnatolij Gustschin clk_put(pdata->clk); 262230f7edeSAnatolij Gustschin } 263230f7edeSAnatolij Gustschin } 264230f7edeSAnatolij Gustschin 265cc604dddSPeter Tyser static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = { 266230f7edeSAnatolij Gustschin .big_endian_desc = 1, 267230f7edeSAnatolij Gustschin .big_endian_mmio = 1, 268230f7edeSAnatolij Gustschin .es = 1, 269cc604dddSPeter Tyser .have_sysif_regs = 0, 270230f7edeSAnatolij Gustschin .le_setup_buf = 1, 271230f7edeSAnatolij Gustschin .init = fsl_usb2_mpc5121_init, 272230f7edeSAnatolij Gustschin .exit = fsl_usb2_mpc5121_exit, 273230f7edeSAnatolij Gustschin }; 274230f7edeSAnatolij Gustschin #endif /* CONFIG_PPC_MPC512x */ 275230f7edeSAnatolij Gustschin 276cc604dddSPeter Tyser static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = { 277cc604dddSPeter Tyser .have_sysif_regs = 1, 278cc604dddSPeter Tyser }; 279cc604dddSPeter Tyser 280126512e3SAnatolij Gustschin static const struct of_device_id fsl_usb2_mph_dr_of_match[] = { 281cc604dddSPeter Tyser { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, }, 282cc604dddSPeter Tyser { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, }, 283230f7edeSAnatolij Gustschin #ifdef CONFIG_PPC_MPC512x 284230f7edeSAnatolij Gustschin { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, }, 285230f7edeSAnatolij Gustschin #endif 286126512e3SAnatolij Gustschin {}, 287126512e3SAnatolij Gustschin }; 288126512e3SAnatolij Gustschin 289126512e3SAnatolij Gustschin static struct platform_driver fsl_usb2_mph_dr_driver = { 290126512e3SAnatolij Gustschin .driver = { 291126512e3SAnatolij Gustschin .name = "fsl-usb2-mph-dr", 292126512e3SAnatolij Gustschin .owner = THIS_MODULE, 293126512e3SAnatolij Gustschin .of_match_table = fsl_usb2_mph_dr_of_match, 294126512e3SAnatolij Gustschin }, 295126512e3SAnatolij Gustschin .probe = fsl_usb2_mph_dr_of_probe, 296126512e3SAnatolij Gustschin .remove = __devexit_p(fsl_usb2_mph_dr_of_remove), 297126512e3SAnatolij Gustschin }; 298126512e3SAnatolij Gustschin 299126512e3SAnatolij Gustschin static int __init fsl_usb2_mph_dr_init(void) 300126512e3SAnatolij Gustschin { 301126512e3SAnatolij Gustschin return platform_driver_register(&fsl_usb2_mph_dr_driver); 302126512e3SAnatolij Gustschin } 303126512e3SAnatolij Gustschin module_init(fsl_usb2_mph_dr_init); 304126512e3SAnatolij Gustschin 305126512e3SAnatolij Gustschin static void __exit fsl_usb2_mph_dr_exit(void) 306126512e3SAnatolij Gustschin { 307126512e3SAnatolij Gustschin platform_driver_unregister(&fsl_usb2_mph_dr_driver); 308126512e3SAnatolij Gustschin } 309126512e3SAnatolij Gustschin module_exit(fsl_usb2_mph_dr_exit); 310126512e3SAnatolij Gustschin 311126512e3SAnatolij Gustschin MODULE_DESCRIPTION("FSL MPH DR OF devices driver"); 312126512e3SAnatolij Gustschin MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>"); 313126512e3SAnatolij Gustschin MODULE_LICENSE("GPL"); 314