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>
20 #include <linux/dma-mapping.h>
22 struct fsl_usb2_dev_data {
23 char *dr_mode; /* controller mode */
24 char *drivers[3]; /* drivers to instantiate for this mode */
25 enum fsl_usb2_operating_modes op_mode; /* operating mode */
28 static struct fsl_usb2_dev_data dr_mode_data[] = {
31 .drivers = { "fsl-ehci", NULL, NULL, },
32 .op_mode = FSL_USB2_DR_HOST,
36 .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
37 .op_mode = FSL_USB2_DR_OTG,
40 .dr_mode = "peripheral",
41 .drivers = { "fsl-usb2-udc", NULL, NULL, },
42 .op_mode = FSL_USB2_DR_DEVICE,
46 static struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np)
48 const unsigned char *prop;
51 prop = of_get_property(np, "dr_mode", NULL);
53 for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) {
54 if (!strcmp(prop, dr_mode_data[i].dr_mode))
55 return &dr_mode_data[i];
58 pr_warn("%pOF: Invalid 'dr_mode' property, fallback to host mode\n",
60 return &dr_mode_data[0]; /* mode not specified, use host */
63 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
66 return FSL_USB2_PHY_NONE;
67 if (!strcasecmp(phy_type, "ulpi"))
68 return FSL_USB2_PHY_ULPI;
69 if (!strcasecmp(phy_type, "utmi"))
70 return FSL_USB2_PHY_UTMI;
71 if (!strcasecmp(phy_type, "utmi_wide"))
72 return FSL_USB2_PHY_UTMI_WIDE;
73 if (!strcasecmp(phy_type, "utmi_dual"))
74 return FSL_USB2_PHY_UTMI_DUAL;
75 if (!strcasecmp(phy_type, "serial"))
76 return FSL_USB2_PHY_SERIAL;
78 return FSL_USB2_PHY_NONE;
81 static struct platform_device *fsl_usb2_device_register(
82 struct platform_device *ofdev,
83 struct fsl_usb2_platform_data *pdata,
84 const char *name, int id)
86 struct platform_device *pdev;
87 const struct resource *res = ofdev->resource;
88 unsigned int num = ofdev->num_resources;
91 pdev = platform_device_alloc(name, id);
97 pdev->dev.parent = &ofdev->dev;
99 pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
101 if (!pdev->dev.dma_mask) {
102 pdev->dev.dma_mask = &ofdev->dev.coherent_dma_mask;
104 retval = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
109 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
114 retval = platform_device_add_resources(pdev, res, num);
119 retval = platform_device_add(pdev);
126 platform_device_put(pdev);
127 return ERR_PTR(retval);
130 static const struct of_device_id fsl_usb2_mph_dr_of_match[];
132 static enum fsl_usb2_controller_ver usb_get_ver_info(struct device_node *np)
134 enum fsl_usb2_controller_ver ver = FSL_USB_VER_NONE;
137 * returns 1 for usb controller version 1.6
138 * returns 2 for usb controller version 2.2
139 * returns 3 for usb controller version 2.4
140 * returns 4 for usb controller version 2.5
141 * returns 0 otherwise
143 if (of_device_is_compatible(np, "fsl-usb2-dr")) {
144 if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6"))
145 ver = FSL_USB_VER_1_6;
146 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2"))
147 ver = FSL_USB_VER_2_2;
148 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4"))
149 ver = FSL_USB_VER_2_4;
150 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.5"))
151 ver = FSL_USB_VER_2_5;
152 else /* for previous controller versions */
153 ver = FSL_USB_VER_OLD;
155 if (ver > FSL_USB_VER_NONE)
159 if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr"))
160 return FSL_USB_VER_OLD;
162 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
163 if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6"))
164 ver = FSL_USB_VER_1_6;
165 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2"))
166 ver = FSL_USB_VER_2_2;
167 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.4"))
168 ver = FSL_USB_VER_2_4;
169 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.5"))
170 ver = FSL_USB_VER_2_5;
171 else /* for previous controller versions */
172 ver = FSL_USB_VER_OLD;
178 static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
180 struct device_node *np = ofdev->dev.of_node;
181 struct platform_device *usb_dev;
182 struct fsl_usb2_platform_data data, *pdata;
183 struct fsl_usb2_dev_data *dev_data;
184 const struct of_device_id *match;
185 const unsigned char *prop;
186 static unsigned int idx;
189 if (!of_device_is_available(np))
192 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
198 memcpy(pdata, match->data, sizeof(data));
200 memset(pdata, 0, sizeof(data));
202 dev_data = get_dr_mode_data(np);
204 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
205 if (of_get_property(np, "port0", NULL))
206 pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
208 if (of_get_property(np, "port1", NULL))
209 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
211 pdata->operating_mode = FSL_USB2_MPH_HOST;
213 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
214 pdata->invert_drvvbus = 1;
216 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
217 pdata->invert_pwr_fault = 1;
219 /* setup mode selected in the device tree */
220 pdata->operating_mode = dev_data->op_mode;
223 prop = of_get_property(np, "phy_type", NULL);
224 pdata->phy_mode = determine_usb_phy(prop);
225 pdata->controller_ver = usb_get_ver_info(np);
227 /* Activate Erratum by reading property in device tree */
228 pdata->has_fsl_erratum_a007792 =
229 of_property_read_bool(np, "fsl,usb-erratum-a007792");
230 pdata->has_fsl_erratum_a005275 =
231 of_property_read_bool(np, "fsl,usb-erratum-a005275");
232 pdata->has_fsl_erratum_a005697 =
233 of_property_read_bool(np, "fsl,usb_erratum-a005697");
236 * Determine whether phy_clk_valid needs to be checked
237 * by reading property in device tree
239 pdata->check_phy_clk_valid =
240 of_property_read_bool(np, "phy-clk-valid");
242 if (pdata->have_sysif_regs) {
243 if (pdata->controller_ver == FSL_USB_VER_NONE) {
244 dev_warn(&ofdev->dev, "Could not get controller version\n");
249 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
250 if (!dev_data->drivers[i])
252 usb_dev = fsl_usb2_device_register(ofdev, pdata,
253 dev_data->drivers[i], idx);
254 if (IS_ERR(usb_dev)) {
255 dev_err(&ofdev->dev, "Can't register usb device\n");
256 return PTR_ERR(usb_dev);
263 static int __unregister_subdev(struct device *dev, void *d)
265 platform_device_unregister(to_platform_device(dev));
269 static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
271 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
275 #ifdef CONFIG_PPC_MPC512x
277 #define USBGENCTRL 0x200 /* NOTE: big endian */
278 #define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */
279 #define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/
280 #define GC_PPP (1 << 3) /* Inv. Port Power Polarity */
281 #define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */
282 #define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */
283 #define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */
285 #define ISIPHYCTRL 0x204 /* NOTE: big endian */
286 #define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */
287 #define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */
288 #define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */
289 #define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */
290 #define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */
292 int fsl_usb2_mpc5121_init(struct platform_device *pdev)
294 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
298 clk = devm_clk_get(pdev->dev.parent, "ipg");
300 dev_err(&pdev->dev, "failed to get clk\n");
303 err = clk_prepare_enable(clk);
305 dev_err(&pdev->dev, "failed to enable clk\n");
310 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
313 if (pdata->invert_drvvbus)
316 if (pdata->invert_pwr_fault)
319 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
320 out_be32(pdata->regs + USBGENCTRL, reg);
325 static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
327 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
332 clk_disable_unprepare(pdata->clk);
335 static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
336 .big_endian_desc = 1,
337 .big_endian_mmio = 1,
339 .have_sysif_regs = 0,
341 .init = fsl_usb2_mpc5121_init,
342 .exit = fsl_usb2_mpc5121_exit,
344 #endif /* CONFIG_PPC_MPC512x */
346 static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
347 .have_sysif_regs = 1,
350 static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
351 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
352 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
353 #ifdef CONFIG_PPC_MPC512x
354 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
358 MODULE_DEVICE_TABLE(of, fsl_usb2_mph_dr_of_match);
360 static struct platform_driver fsl_usb2_mph_dr_driver = {
362 .name = "fsl-usb2-mph-dr",
363 .of_match_table = fsl_usb2_mph_dr_of_match,
365 .probe = fsl_usb2_mph_dr_of_probe,
366 .remove = fsl_usb2_mph_dr_of_remove,
369 module_platform_driver(fsl_usb2_mph_dr_driver);
371 MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
372 MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
373 MODULE_LICENSE("GPL");