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 static struct fsl_usb2_dev_data dr_mode_data[] = {
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 static struct fsl_usb2_dev_data *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 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 static struct platform_device *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 = *ofdev->dev.dma_mask;
99 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
104 retval = platform_device_add_resources(pdev, res, num);
109 retval = platform_device_add(pdev);
116 platform_device_put(pdev);
117 return ERR_PTR(retval);
120 static const struct of_device_id fsl_usb2_mph_dr_of_match[];
122 static int usb_get_ver_info(struct device_node *np)
127 * returns 1 for usb controller version 1.6
128 * returns 2 for usb controller version 2.2
129 * returns 3 for usb controller version 2.4
130 * returns 4 for usb controller version 2.5
131 * returns 0 otherwise
133 if (of_device_is_compatible(np, "fsl-usb2-dr")) {
134 if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6"))
135 ver = FSL_USB_VER_1_6;
136 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2"))
137 ver = FSL_USB_VER_2_2;
138 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4"))
139 ver = FSL_USB_VER_2_4;
140 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.5"))
141 ver = FSL_USB_VER_2_5;
142 else /* for previous controller versions */
143 ver = FSL_USB_VER_OLD;
149 if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr"))
150 return FSL_USB_VER_OLD;
152 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
153 if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6"))
154 ver = FSL_USB_VER_1_6;
155 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2"))
156 ver = FSL_USB_VER_2_2;
157 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.4"))
158 ver = FSL_USB_VER_2_4;
159 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.5"))
160 ver = FSL_USB_VER_2_5;
161 else /* for previous controller versions */
162 ver = FSL_USB_VER_OLD;
168 static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
170 struct device_node *np = ofdev->dev.of_node;
171 struct platform_device *usb_dev;
172 struct fsl_usb2_platform_data data, *pdata;
173 struct fsl_usb2_dev_data *dev_data;
174 const struct of_device_id *match;
175 const unsigned char *prop;
176 static unsigned int idx;
179 if (!of_device_is_available(np))
182 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
188 memcpy(pdata, match->data, sizeof(data));
190 memset(pdata, 0, sizeof(data));
192 dev_data = get_dr_mode_data(np);
194 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
195 if (of_get_property(np, "port0", NULL))
196 pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
198 if (of_get_property(np, "port1", NULL))
199 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
201 pdata->operating_mode = FSL_USB2_MPH_HOST;
203 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
204 pdata->invert_drvvbus = 1;
206 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
207 pdata->invert_pwr_fault = 1;
209 /* setup mode selected in the device tree */
210 pdata->operating_mode = dev_data->op_mode;
213 prop = of_get_property(np, "phy_type", NULL);
214 pdata->phy_mode = determine_usb_phy(prop);
215 pdata->controller_ver = usb_get_ver_info(np);
217 if (pdata->have_sysif_regs) {
218 if (pdata->controller_ver < 0) {
219 dev_warn(&ofdev->dev, "Could not get controller version\n");
224 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
225 if (!dev_data->drivers[i])
227 usb_dev = fsl_usb2_device_register(ofdev, pdata,
228 dev_data->drivers[i], idx);
229 if (IS_ERR(usb_dev)) {
230 dev_err(&ofdev->dev, "Can't register usb device\n");
231 return PTR_ERR(usb_dev);
238 static int __unregister_subdev(struct device *dev, void *d)
240 platform_device_unregister(to_platform_device(dev));
244 static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
246 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
250 #ifdef CONFIG_PPC_MPC512x
252 #define USBGENCTRL 0x200 /* NOTE: big endian */
253 #define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */
254 #define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/
255 #define GC_PPP (1 << 3) /* Inv. Port Power Polarity */
256 #define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */
257 #define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */
258 #define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */
260 #define ISIPHYCTRL 0x204 /* NOTE: big endian */
261 #define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */
262 #define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */
263 #define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */
264 #define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */
265 #define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */
267 int fsl_usb2_mpc5121_init(struct platform_device *pdev)
269 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
273 clk = devm_clk_get(pdev->dev.parent, "ipg");
275 dev_err(&pdev->dev, "failed to get clk\n");
278 err = clk_prepare_enable(clk);
280 dev_err(&pdev->dev, "failed to enable clk\n");
285 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
288 if (pdata->invert_drvvbus)
291 if (pdata->invert_pwr_fault)
294 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
295 out_be32(pdata->regs + USBGENCTRL, reg);
300 static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
302 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
307 clk_disable_unprepare(pdata->clk);
310 static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
311 .big_endian_desc = 1,
312 .big_endian_mmio = 1,
314 .have_sysif_regs = 0,
316 .init = fsl_usb2_mpc5121_init,
317 .exit = fsl_usb2_mpc5121_exit,
319 #endif /* CONFIG_PPC_MPC512x */
321 static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
322 .have_sysif_regs = 1,
325 static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
326 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
327 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
328 #ifdef CONFIG_PPC_MPC512x
329 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
334 static struct platform_driver fsl_usb2_mph_dr_driver = {
336 .name = "fsl-usb2-mph-dr",
337 .of_match_table = fsl_usb2_mph_dr_of_match,
339 .probe = fsl_usb2_mph_dr_of_probe,
340 .remove = fsl_usb2_mph_dr_of_remove,
343 module_platform_driver(fsl_usb2_mph_dr_driver);
345 MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
347 MODULE_LICENSE("GPL");