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12#include <linux/kernel.h>
13#include <linux/platform_device.h>
14#include <linux/fsl_devices.h>
15#include <linux/err.h>
16#include <linux/io.h>
17#include <linux/of_platform.h>
18#include <linux/clk.h>
19#include <linux/module.h>
20
21struct fsl_usb2_dev_data {
22 char *dr_mode;
23 char *drivers[3];
24 enum fsl_usb2_operating_modes op_mode;
25};
26
27static struct fsl_usb2_dev_data dr_mode_data[] = {
28 {
29 .dr_mode = "host",
30 .drivers = { "fsl-ehci", NULL, NULL, },
31 .op_mode = FSL_USB2_DR_HOST,
32 },
33 {
34 .dr_mode = "otg",
35 .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
36 .op_mode = FSL_USB2_DR_OTG,
37 },
38 {
39 .dr_mode = "peripheral",
40 .drivers = { "fsl-usb2-udc", NULL, NULL, },
41 .op_mode = FSL_USB2_DR_DEVICE,
42 },
43};
44
45static struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np)
46{
47 const unsigned char *prop;
48 int i;
49
50 prop = of_get_property(np, "dr_mode", NULL);
51 if (prop) {
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];
55 }
56 }
57 pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n",
58 np->full_name);
59 return &dr_mode_data[0];
60}
61
62static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
63{
64 if (!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, "utmi_dual"))
73 return FSL_USB2_PHY_UTMI_DUAL;
74 if (!strcasecmp(phy_type, "serial"))
75 return FSL_USB2_PHY_SERIAL;
76
77 return FSL_USB2_PHY_NONE;
78}
79
80static struct platform_device *fsl_usb2_device_register(
81 struct platform_device *ofdev,
82 struct fsl_usb2_platform_data *pdata,
83 const char *name, int id)
84{
85 struct platform_device *pdev;
86 const struct resource *res = ofdev->resource;
87 unsigned int num = ofdev->num_resources;
88 int retval;
89
90 pdev = platform_device_alloc(name, id);
91 if (!pdev) {
92 retval = -ENOMEM;
93 goto error;
94 }
95
96 pdev->dev.parent = &ofdev->dev;
97
98 pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
99 *pdev->dev.dma_mask = *ofdev->dev.dma_mask;
100
101 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
102 if (retval)
103 goto error;
104
105 if (num) {
106 retval = platform_device_add_resources(pdev, res, num);
107 if (retval)
108 goto error;
109 }
110
111 retval = platform_device_add(pdev);
112 if (retval)
113 goto error;
114
115 return pdev;
116
117error:
118 platform_device_put(pdev);
119 return ERR_PTR(retval);
120}
121
122static const struct of_device_id fsl_usb2_mph_dr_of_match[];
123
124static enum fsl_usb2_controller_ver usb_get_ver_info(struct device_node *np)
125{
126 enum fsl_usb2_controller_ver ver = FSL_USB_VER_NONE;
127
128
129
130
131
132
133
134
135 if (of_device_is_compatible(np, "fsl-usb2-dr")) {
136 if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6"))
137 ver = FSL_USB_VER_1_6;
138 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2"))
139 ver = FSL_USB_VER_2_2;
140 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4"))
141 ver = FSL_USB_VER_2_4;
142 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.5"))
143 ver = FSL_USB_VER_2_5;
144 else
145 ver = FSL_USB_VER_OLD;
146
147 if (ver > FSL_USB_VER_NONE)
148 return ver;
149 }
150
151 if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr"))
152 return FSL_USB_VER_OLD;
153
154 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
155 if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6"))
156 ver = FSL_USB_VER_1_6;
157 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2"))
158 ver = FSL_USB_VER_2_2;
159 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.4"))
160 ver = FSL_USB_VER_2_4;
161 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.5"))
162 ver = FSL_USB_VER_2_5;
163 else
164 ver = FSL_USB_VER_OLD;
165 }
166
167 return ver;
168}
169
170static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
171{
172 struct device_node *np = ofdev->dev.of_node;
173 struct platform_device *usb_dev;
174 struct fsl_usb2_platform_data data, *pdata;
175 struct fsl_usb2_dev_data *dev_data;
176 const struct of_device_id *match;
177 const unsigned char *prop;
178 static unsigned int idx;
179 int i;
180
181 if (!of_device_is_available(np))
182 return -ENODEV;
183
184 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
185 if (!match)
186 return -ENODEV;
187
188 pdata = &data;
189 if (match->data)
190 memcpy(pdata, match->data, sizeof(data));
191 else
192 memset(pdata, 0, sizeof(data));
193
194 dev_data = get_dr_mode_data(np);
195
196 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
197 if (of_get_property(np, "port0", NULL))
198 pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
199
200 if (of_get_property(np, "port1", NULL))
201 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
202
203 pdata->operating_mode = FSL_USB2_MPH_HOST;
204 } else {
205 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
206 pdata->invert_drvvbus = 1;
207
208 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
209 pdata->invert_pwr_fault = 1;
210
211
212 pdata->operating_mode = dev_data->op_mode;
213 }
214
215 prop = of_get_property(np, "phy_type", NULL);
216 pdata->phy_mode = determine_usb_phy(prop);
217 pdata->controller_ver = usb_get_ver_info(np);
218
219
220 if (of_get_property(np, "fsl,usb-erratum-a007792", NULL))
221 pdata->has_fsl_erratum_a007792 = 1;
222 else
223 pdata->has_fsl_erratum_a007792 = 0;
224 if (of_get_property(np, "fsl,usb-erratum-a005275", NULL))
225 pdata->has_fsl_erratum_a005275 = 1;
226 else
227 pdata->has_fsl_erratum_a005275 = 0;
228
229
230
231
232
233 if (of_get_property(np, "phy-clk-valid", NULL))
234 pdata->check_phy_clk_valid = 1;
235 else
236 pdata->check_phy_clk_valid = 0;
237
238 if (pdata->have_sysif_regs) {
239 if (pdata->controller_ver == FSL_USB_VER_NONE) {
240 dev_warn(&ofdev->dev, "Could not get controller version\n");
241 return -ENODEV;
242 }
243 }
244
245 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
246 if (!dev_data->drivers[i])
247 continue;
248 usb_dev = fsl_usb2_device_register(ofdev, pdata,
249 dev_data->drivers[i], idx);
250 if (IS_ERR(usb_dev)) {
251 dev_err(&ofdev->dev, "Can't register usb device\n");
252 return PTR_ERR(usb_dev);
253 }
254 }
255 idx++;
256 return 0;
257}
258
259static int __unregister_subdev(struct device *dev, void *d)
260{
261 platform_device_unregister(to_platform_device(dev));
262 return 0;
263}
264
265static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
266{
267 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
268 return 0;
269}
270
271#ifdef CONFIG_PPC_MPC512x
272
273#define USBGENCTRL 0x200
274#define GC_WU_INT_CLR (1 << 5)
275#define GC_ULPI_SEL (1 << 4)
276#define GC_PPP (1 << 3)
277#define GC_PFP (1 << 2)
278#define GC_WU_ULPI_EN (1 << 1)
279#define GC_WU_IE (1 << 1)
280
281#define ISIPHYCTRL 0x204
282#define PHYCTRL_PHYE (1 << 4)
283#define PHYCTRL_BSENH (1 << 3)
284#define PHYCTRL_BSEN (1 << 2)
285#define PHYCTRL_LSFE (1 << 1)
286#define PHYCTRL_PXE (1 << 0)
287
288int fsl_usb2_mpc5121_init(struct platform_device *pdev)
289{
290 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
291 struct clk *clk;
292 int err;
293
294 clk = devm_clk_get(pdev->dev.parent, "ipg");
295 if (IS_ERR(clk)) {
296 dev_err(&pdev->dev, "failed to get clk\n");
297 return PTR_ERR(clk);
298 }
299 err = clk_prepare_enable(clk);
300 if (err) {
301 dev_err(&pdev->dev, "failed to enable clk\n");
302 return err;
303 }
304 pdata->clk = clk;
305
306 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
307 u32 reg = 0;
308
309 if (pdata->invert_drvvbus)
310 reg |= GC_PPP;
311
312 if (pdata->invert_pwr_fault)
313 reg |= GC_PFP;
314
315 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
316 out_be32(pdata->regs + USBGENCTRL, reg);
317 }
318 return 0;
319}
320
321static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
322{
323 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
324
325 pdata->regs = NULL;
326
327 if (pdata->clk)
328 clk_disable_unprepare(pdata->clk);
329}
330
331static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
332 .big_endian_desc = 1,
333 .big_endian_mmio = 1,
334 .es = 1,
335 .have_sysif_regs = 0,
336 .le_setup_buf = 1,
337 .init = fsl_usb2_mpc5121_init,
338 .exit = fsl_usb2_mpc5121_exit,
339};
340#endif
341
342static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
343 .have_sysif_regs = 1,
344};
345
346static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
347 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
348 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
349#ifdef CONFIG_PPC_MPC512x
350 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
351#endif
352 {},
353};
354
355static struct platform_driver fsl_usb2_mph_dr_driver = {
356 .driver = {
357 .name = "fsl-usb2-mph-dr",
358 .of_match_table = fsl_usb2_mph_dr_of_match,
359 },
360 .probe = fsl_usb2_mph_dr_of_probe,
361 .remove = fsl_usb2_mph_dr_of_remove,
362};
363
364module_platform_driver(fsl_usb2_mph_dr_driver);
365
366MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
367MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
368MODULE_LICENSE("GPL");
369
