blob: 9037035ad1e46034137a875572b99f6a4e41a985 [file] [log] [blame]
Anatolij Gustschin126512e2010-09-28 20:55:20 +02001/*
2 * Setup platform devices needed by the Freescale multi-port host
3 * and/or dual-role USB controller modules based on the description
4 * in flat device tree.
5 *
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.
10 */
11
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>
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +020018#include <linux/clk.h>
Paul Gortmaker6eb0de82011-07-03 16:09:31 -040019#include <linux/module.h>
Anatolij Gustschin126512e2010-09-28 20:55:20 +020020
21struct 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 */
25};
26
27struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = {
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
45struct fsl_usb2_dev_data * __devinit 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]; /* mode not specified, use host */
60}
61
62static enum fsl_usb2_phy_modes __devinit 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, "serial"))
73 return FSL_USB2_PHY_SERIAL;
74
75 return FSL_USB2_PHY_NONE;
76}
77
78struct 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)
82{
83 struct platform_device *pdev;
84 const struct resource *res = ofdev->resource;
85 unsigned int num = ofdev->num_resources;
86 int retval;
87
88 pdev = platform_device_alloc(name, id);
89 if (!pdev) {
90 retval = -ENOMEM;
91 goto error;
92 }
93
94 pdev->dev.parent = &ofdev->dev;
95
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;
99
100 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
101 if (retval)
102 goto error;
103
104 if (num) {
105 retval = platform_device_add_resources(pdev, res, num);
106 if (retval)
107 goto error;
108 }
109
110 retval = platform_device_add(pdev);
111 if (retval)
112 goto error;
113
114 return pdev;
115
116error:
117 platform_device_put(pdev);
118 return ERR_PTR(retval);
119}
120
121static const struct of_device_id fsl_usb2_mph_dr_of_match[];
122
123static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
124{
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;
132 int i;
133
134 if (!of_device_is_available(np))
135 return -ENODEV;
136
137 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
138 if (!match)
139 return -ENODEV;
140
141 pdata = &data;
142 if (match->data)
143 memcpy(pdata, match->data, sizeof(data));
144 else
145 memset(pdata, 0, sizeof(data));
146
147 dev_data = get_dr_mode_data(np);
148
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;
152
153 if (of_get_property(np, "port1", NULL))
154 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
155
156 pdata->operating_mode = FSL_USB2_MPH_HOST;
157 } else {
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200158 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
159 pdata->invert_drvvbus = 1;
160
161 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
162 pdata->invert_pwr_fault = 1;
163
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200164 /* setup mode selected in the device tree */
165 pdata->operating_mode = dev_data->op_mode;
166 }
167
168 prop = of_get_property(np, "phy_type", NULL);
169 pdata->phy_mode = determine_usb_phy(prop);
170
171 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
172 if (!dev_data->drivers[i])
173 continue;
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);
179 }
180 }
181 idx++;
182 return 0;
183}
184
185static int __devexit __unregister_subdev(struct device *dev, void *d)
186{
187 platform_device_unregister(to_platform_device(dev));
188 return 0;
189}
190
191static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
192{
193 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
194 return 0;
195}
196
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200197#ifdef CONFIG_PPC_MPC512x
198
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 */
206
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 */
213
214int fsl_usb2_mpc5121_init(struct platform_device *pdev)
215{
216 struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
217 struct clk *clk;
218 char clk_name[10];
219 int base, clk_num;
220
221 base = pdev->resource->start & 0xf000;
222 if (base == 0x3000)
223 clk_num = 1;
224 else if (base == 0x4000)
225 clk_num = 2;
226 else
227 return -ENODEV;
228
229 snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num);
230 clk = clk_get(&pdev->dev, clk_name);
231 if (IS_ERR(clk)) {
232 dev_err(&pdev->dev, "failed to get clk\n");
233 return PTR_ERR(clk);
234 }
235
236 clk_enable(clk);
237 pdata->clk = clk;
238
239 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
240 u32 reg = 0;
241
242 if (pdata->invert_drvvbus)
243 reg |= GC_PPP;
244
245 if (pdata->invert_pwr_fault)
246 reg |= GC_PFP;
247
248 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
249 out_be32(pdata->regs + USBGENCTRL, reg);
250 }
251 return 0;
252}
253
254static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
255{
256 struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
257
258 pdata->regs = NULL;
259
260 if (pdata->clk) {
261 clk_disable(pdata->clk);
262 clk_put(pdata->clk);
263 }
264}
265
Peter Tysercc604dd2011-01-10 17:34:14 -0600266static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200267 .big_endian_desc = 1,
268 .big_endian_mmio = 1,
269 .es = 1,
Peter Tysercc604dd2011-01-10 17:34:14 -0600270 .have_sysif_regs = 0,
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200271 .le_setup_buf = 1,
272 .init = fsl_usb2_mpc5121_init,
273 .exit = fsl_usb2_mpc5121_exit,
274};
275#endif /* CONFIG_PPC_MPC512x */
276
Peter Tysercc604dd2011-01-10 17:34:14 -0600277static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
278 .have_sysif_regs = 1,
279};
280
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200281static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
Peter Tysercc604dd2011-01-10 17:34:14 -0600282 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
283 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200284#ifdef CONFIG_PPC_MPC512x
285 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
286#endif
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200287 {},
288};
289
290static struct platform_driver fsl_usb2_mph_dr_driver = {
291 .driver = {
292 .name = "fsl-usb2-mph-dr",
293 .owner = THIS_MODULE,
294 .of_match_table = fsl_usb2_mph_dr_of_match,
295 },
296 .probe = fsl_usb2_mph_dr_of_probe,
297 .remove = __devexit_p(fsl_usb2_mph_dr_of_remove),
298};
299
300static int __init fsl_usb2_mph_dr_init(void)
301{
302 return platform_driver_register(&fsl_usb2_mph_dr_driver);
303}
304module_init(fsl_usb2_mph_dr_init);
305
306static void __exit fsl_usb2_mph_dr_exit(void)
307{
308 platform_driver_unregister(&fsl_usb2_mph_dr_driver);
309}
310module_exit(fsl_usb2_mph_dr_exit);
311
312MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
313MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
314MODULE_LICENSE("GPL");