2 * Setup platform devices needed by the Freescale multi-port host
3 * and/or dual-role USB controller modules based on the description
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
12 #include <linux/kernel.h>
13 #include <linux/platform_device.h>
14 #include <linux/fsl_devices.h>
15 #include <linux/err.h>
17 #include <linux/of_platform.h>
18 #include <linux/clk.h>
20 struct fsl_usb2_dev_data {
21 char *dr_mode; /* controller mode */
22 char *drivers[3]; /* drivers to instantiate for this mode */
23 enum fsl_usb2_operating_modes op_mode; /* operating mode */
26 struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = {
29 .drivers = { "fsl-ehci", NULL, NULL, },
30 .op_mode = FSL_USB2_DR_HOST,
34 .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
35 .op_mode = FSL_USB2_DR_OTG,
38 .dr_mode = "peripheral",
39 .drivers = { "fsl-usb2-udc", NULL, NULL, },
40 .op_mode = FSL_USB2_DR_DEVICE,
44 struct fsl_usb2_dev_data * __devinit get_dr_mode_data(struct device_node *np)
46 const unsigned char *prop;
49 prop = of_get_property(np, "dr_mode", NULL);
51 for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) {
52 if (!strcmp(prop, dr_mode_data[i].dr_mode))
53 return &dr_mode_data[i];
56 pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n",
58 return &dr_mode_data[0]; /* mode not specified, use host */
61 static enum fsl_usb2_phy_modes __devinit determine_usb_phy(const char *phy_type)
64 return FSL_USB2_PHY_NONE;
65 if (!strcasecmp(phy_type, "ulpi"))
66 return FSL_USB2_PHY_ULPI;
67 if (!strcasecmp(phy_type, "utmi"))
68 return FSL_USB2_PHY_UTMI;
69 if (!strcasecmp(phy_type, "utmi_wide"))
70 return FSL_USB2_PHY_UTMI_WIDE;
71 if (!strcasecmp(phy_type, "serial"))
72 return FSL_USB2_PHY_SERIAL;
74 return FSL_USB2_PHY_NONE;
77 struct platform_device * __devinit fsl_usb2_device_register(
78 struct platform_device *ofdev,
79 struct fsl_usb2_platform_data *pdata,
80 const char *name, int id)
82 struct platform_device *pdev;
83 const struct resource *res = ofdev->resource;
84 unsigned int num = ofdev->num_resources;
87 pdev = platform_device_alloc(name, id);
93 pdev->dev.parent = &ofdev->dev;
95 pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
96 *pdev->dev.dma_mask = *ofdev->dev.dma_mask;
98 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
103 retval = platform_device_add_resources(pdev, res, num);
108 retval = platform_device_add(pdev);
115 platform_device_put(pdev);
116 return ERR_PTR(retval);
119 static const struct of_device_id fsl_usb2_mph_dr_of_match[];
121 static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
123 struct device_node *np = ofdev->dev.of_node;
124 struct platform_device *usb_dev;
125 struct fsl_usb2_platform_data data, *pdata;
126 struct fsl_usb2_dev_data *dev_data;
127 const struct of_device_id *match;
128 const unsigned char *prop;
129 static unsigned int idx;
132 if (!of_device_is_available(np))
135 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
141 memcpy(pdata, match->data, sizeof(data));
143 memset(pdata, 0, sizeof(data));
145 dev_data = get_dr_mode_data(np);
147 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
148 if (of_get_property(np, "port0", NULL))
149 pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
151 if (of_get_property(np, "port1", NULL))
152 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
154 pdata->operating_mode = FSL_USB2_MPH_HOST;
156 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
157 pdata->invert_drvvbus = 1;
159 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
160 pdata->invert_pwr_fault = 1;
162 /* setup mode selected in the device tree */
163 pdata->operating_mode = dev_data->op_mode;
166 prop = of_get_property(np, "phy_type", NULL);
167 pdata->phy_mode = determine_usb_phy(prop);
169 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
170 if (!dev_data->drivers[i])
172 usb_dev = fsl_usb2_device_register(ofdev, pdata,
173 dev_data->drivers[i], idx);
174 if (IS_ERR(usb_dev)) {
175 dev_err(&ofdev->dev, "Can't register usb device\n");
176 return PTR_ERR(usb_dev);
183 static int __devexit __unregister_subdev(struct device *dev, void *d)
185 platform_device_unregister(to_platform_device(dev));
189 static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
191 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
195 #ifdef CONFIG_PPC_MPC512x
197 #define USBGENCTRL 0x200 /* NOTE: big endian */
198 #define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */
199 #define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/
200 #define GC_PPP (1 << 3) /* Inv. Port Power Polarity */
201 #define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */
202 #define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */
203 #define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */
205 #define ISIPHYCTRL 0x204 /* NOTE: big endian */
206 #define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */
207 #define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */
208 #define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */
209 #define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */
210 #define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */
212 int fsl_usb2_mpc5121_init(struct platform_device *pdev)
214 struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
219 base = pdev->resource->start & 0xf000;
222 else if (base == 0x4000)
227 snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num);
228 clk = clk_get(&pdev->dev, clk_name);
230 dev_err(&pdev->dev, "failed to get clk\n");
237 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
240 if (pdata->invert_drvvbus)
243 if (pdata->invert_pwr_fault)
246 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
247 out_be32(pdata->regs + USBGENCTRL, reg);
252 static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
254 struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
259 clk_disable(pdata->clk);
264 static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
265 .big_endian_desc = 1,
266 .big_endian_mmio = 1,
268 .have_sysif_regs = 0,
270 .init = fsl_usb2_mpc5121_init,
271 .exit = fsl_usb2_mpc5121_exit,
273 #endif /* CONFIG_PPC_MPC512x */
275 static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
276 .have_sysif_regs = 1,
279 static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
280 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
281 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
282 #ifdef CONFIG_PPC_MPC512x
283 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
288 static struct platform_driver fsl_usb2_mph_dr_driver = {
290 .name = "fsl-usb2-mph-dr",
291 .owner = THIS_MODULE,
292 .of_match_table = fsl_usb2_mph_dr_of_match,
294 .probe = fsl_usb2_mph_dr_of_probe,
295 .remove = __devexit_p(fsl_usb2_mph_dr_of_remove),
298 static int __init fsl_usb2_mph_dr_init(void)
300 return platform_driver_register(&fsl_usb2_mph_dr_driver);
302 module_init(fsl_usb2_mph_dr_init);
304 static void __exit fsl_usb2_mph_dr_exit(void)
306 platform_driver_unregister(&fsl_usb2_mph_dr_driver);
308 module_exit(fsl_usb2_mph_dr_exit);
310 MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
311 MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
312 MODULE_LICENSE("GPL");