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>
19 #include <linux/module.h>
21 struct fsl_usb2_dev_data {
22 char *dr_mode; /* controller mode */
23 char *drivers[3]; /* drivers to instantiate for this mode */
24 enum fsl_usb2_operating_modes op_mode; /* operating mode */
27 struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = {
30 .drivers = { "fsl-ehci", NULL, NULL, },
31 .op_mode = FSL_USB2_DR_HOST,
35 .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
36 .op_mode = FSL_USB2_DR_OTG,
39 .dr_mode = "peripheral",
40 .drivers = { "fsl-usb2-udc", NULL, NULL, },
41 .op_mode = FSL_USB2_DR_DEVICE,
45 struct fsl_usb2_dev_data * __devinit get_dr_mode_data(struct device_node *np)
47 const unsigned char *prop;
50 prop = of_get_property(np, "dr_mode", NULL);
52 for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) {
53 if (!strcmp(prop, dr_mode_data[i].dr_mode))
54 return &dr_mode_data[i];
57 pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n",
59 return &dr_mode_data[0]; /* mode not specified, use host */
62 static enum fsl_usb2_phy_modes __devinit determine_usb_phy(const char *phy_type)
65 return FSL_USB2_PHY_NONE;
66 if (!strcasecmp(phy_type, "ulpi"))
67 return FSL_USB2_PHY_ULPI;
68 if (!strcasecmp(phy_type, "utmi"))
69 return FSL_USB2_PHY_UTMI;
70 if (!strcasecmp(phy_type, "utmi_wide"))
71 return FSL_USB2_PHY_UTMI_WIDE;
72 if (!strcasecmp(phy_type, "serial"))
73 return FSL_USB2_PHY_SERIAL;
75 return FSL_USB2_PHY_NONE;
78 struct platform_device * __devinit fsl_usb2_device_register(
79 struct platform_device *ofdev,
80 struct fsl_usb2_platform_data *pdata,
81 const char *name, int id)
83 struct platform_device *pdev;
84 const struct resource *res = ofdev->resource;
85 unsigned int num = ofdev->num_resources;
88 pdev = platform_device_alloc(name, id);
94 pdev->dev.parent = &ofdev->dev;
96 pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
97 pdev->dev.dma_mask = &pdev->archdata.dma_mask;
98 *pdev->dev.dma_mask = *ofdev->dev.dma_mask;
100 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
105 retval = platform_device_add_resources(pdev, res, num);
110 retval = platform_device_add(pdev);
117 platform_device_put(pdev);
118 return ERR_PTR(retval);
121 static const struct of_device_id fsl_usb2_mph_dr_of_match[];
123 static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
125 struct device_node *np = ofdev->dev.of_node;
126 struct platform_device *usb_dev;
127 struct fsl_usb2_platform_data data, *pdata;
128 struct fsl_usb2_dev_data *dev_data;
129 const struct of_device_id *match;
130 const unsigned char *prop;
131 static unsigned int idx;
134 if (!of_device_is_available(np))
137 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
143 memcpy(pdata, match->data, sizeof(data));
145 memset(pdata, 0, sizeof(data));
147 dev_data = get_dr_mode_data(np);
149 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
150 if (of_get_property(np, "port0", NULL))
151 pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
153 if (of_get_property(np, "port1", NULL))
154 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
156 pdata->operating_mode = FSL_USB2_MPH_HOST;
158 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
159 pdata->invert_drvvbus = 1;
161 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
162 pdata->invert_pwr_fault = 1;
164 /* setup mode selected in the device tree */
165 pdata->operating_mode = dev_data->op_mode;
168 prop = of_get_property(np, "phy_type", NULL);
169 pdata->phy_mode = determine_usb_phy(prop);
171 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
172 if (!dev_data->drivers[i])
174 usb_dev = fsl_usb2_device_register(ofdev, pdata,
175 dev_data->drivers[i], idx);
176 if (IS_ERR(usb_dev)) {
177 dev_err(&ofdev->dev, "Can't register usb device\n");
178 return PTR_ERR(usb_dev);
185 static int __devexit __unregister_subdev(struct device *dev, void *d)
187 platform_device_unregister(to_platform_device(dev));
191 static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
193 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
197 #ifdef CONFIG_PPC_MPC512x
199 #define USBGENCTRL 0x200 /* NOTE: big endian */
200 #define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */
201 #define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/
202 #define GC_PPP (1 << 3) /* Inv. Port Power Polarity */
203 #define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */
204 #define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */
205 #define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */
207 #define ISIPHYCTRL 0x204 /* NOTE: big endian */
208 #define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */
209 #define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */
210 #define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */
211 #define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */
212 #define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */
214 int fsl_usb2_mpc5121_init(struct platform_device *pdev)
216 struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
221 base = pdev->resource->start & 0xf000;
224 else if (base == 0x4000)
229 snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num);
230 clk = clk_get(&pdev->dev, clk_name);
232 dev_err(&pdev->dev, "failed to get clk\n");
239 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
242 if (pdata->invert_drvvbus)
245 if (pdata->invert_pwr_fault)
248 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
249 out_be32(pdata->regs + USBGENCTRL, reg);
254 static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
256 struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
261 clk_disable(pdata->clk);
266 static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
267 .big_endian_desc = 1,
268 .big_endian_mmio = 1,
270 .have_sysif_regs = 0,
272 .init = fsl_usb2_mpc5121_init,
273 .exit = fsl_usb2_mpc5121_exit,
275 #endif /* CONFIG_PPC_MPC512x */
277 static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
278 .have_sysif_regs = 1,
281 static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
282 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
283 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
284 #ifdef CONFIG_PPC_MPC512x
285 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
290 static struct platform_driver fsl_usb2_mph_dr_driver = {
292 .name = "fsl-usb2-mph-dr",
293 .owner = THIS_MODULE,
294 .of_match_table = fsl_usb2_mph_dr_of_match,
296 .probe = fsl_usb2_mph_dr_of_probe,
297 .remove = __devexit_p(fsl_usb2_mph_dr_of_remove),
300 static int __init fsl_usb2_mph_dr_init(void)
302 return platform_driver_register(&fsl_usb2_mph_dr_driver);
304 module_init(fsl_usb2_mph_dr_init);
306 static void __exit fsl_usb2_mph_dr_exit(void)
308 platform_driver_unregister(&fsl_usb2_mph_dr_driver);
310 module_exit(fsl_usb2_mph_dr_exit);
312 MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
313 MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
314 MODULE_LICENSE("GPL");