Loading...
1/*
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>
18#include <linux/clk.h>
19
20struct fsl_usb2_dev_data {
21 char *dr_mode; /* controller mode */
22 char *drivers[3]; /* drivers to instantiate for this mode */
23 enum fsl_usb2_operating_modes op_mode; /* operating mode */
24};
25
26struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = {
27 {
28 .dr_mode = "host",
29 .drivers = { "fsl-ehci", NULL, NULL, },
30 .op_mode = FSL_USB2_DR_HOST,
31 },
32 {
33 .dr_mode = "otg",
34 .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
35 .op_mode = FSL_USB2_DR_OTG,
36 },
37 {
38 .dr_mode = "peripheral",
39 .drivers = { "fsl-usb2-udc", NULL, NULL, },
40 .op_mode = FSL_USB2_DR_DEVICE,
41 },
42};
43
44struct fsl_usb2_dev_data * __devinit get_dr_mode_data(struct device_node *np)
45{
46 const unsigned char *prop;
47 int i;
48
49 prop = of_get_property(np, "dr_mode", NULL);
50 if (prop) {
51 for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) {
52 if (!strcmp(prop, dr_mode_data[i].dr_mode))
53 return &dr_mode_data[i];
54 }
55 }
56 pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n",
57 np->full_name);
58 return &dr_mode_data[0]; /* mode not specified, use host */
59}
60
61static enum fsl_usb2_phy_modes __devinit determine_usb_phy(const char *phy_type)
62{
63 if (!phy_type)
64 return FSL_USB2_PHY_NONE;
65 if (!strcasecmp(phy_type, "ulpi"))
66 return FSL_USB2_PHY_ULPI;
67 if (!strcasecmp(phy_type, "utmi"))
68 return FSL_USB2_PHY_UTMI;
69 if (!strcasecmp(phy_type, "utmi_wide"))
70 return FSL_USB2_PHY_UTMI_WIDE;
71 if (!strcasecmp(phy_type, "serial"))
72 return FSL_USB2_PHY_SERIAL;
73
74 return FSL_USB2_PHY_NONE;
75}
76
77struct platform_device * __devinit fsl_usb2_device_register(
78 struct platform_device *ofdev,
79 struct fsl_usb2_platform_data *pdata,
80 const char *name, int id)
81{
82 struct platform_device *pdev;
83 const struct resource *res = ofdev->resource;
84 unsigned int num = ofdev->num_resources;
85 int retval;
86
87 pdev = platform_device_alloc(name, id);
88 if (!pdev) {
89 retval = -ENOMEM;
90 goto error;
91 }
92
93 pdev->dev.parent = &ofdev->dev;
94
95 pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
96 pdev->dev.dma_mask = &pdev->archdata.dma_mask;
97 *pdev->dev.dma_mask = *ofdev->dev.dma_mask;
98
99 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
100 if (retval)
101 goto error;
102
103 if (num) {
104 retval = platform_device_add_resources(pdev, res, num);
105 if (retval)
106 goto error;
107 }
108
109 retval = platform_device_add(pdev);
110 if (retval)
111 goto error;
112
113 return pdev;
114
115error:
116 platform_device_put(pdev);
117 return ERR_PTR(retval);
118}
119
120static const struct of_device_id fsl_usb2_mph_dr_of_match[];
121
122static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
123{
124 struct device_node *np = ofdev->dev.of_node;
125 struct platform_device *usb_dev;
126 struct fsl_usb2_platform_data data, *pdata;
127 struct fsl_usb2_dev_data *dev_data;
128 const struct of_device_id *match;
129 const unsigned char *prop;
130 static unsigned int idx;
131 int i;
132
133 if (!of_device_is_available(np))
134 return -ENODEV;
135
136 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
137 if (!match)
138 return -ENODEV;
139
140 pdata = &data;
141 if (match->data)
142 memcpy(pdata, match->data, sizeof(data));
143 else
144 memset(pdata, 0, sizeof(data));
145
146 dev_data = get_dr_mode_data(np);
147
148 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
149 if (of_get_property(np, "port0", NULL))
150 pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
151
152 if (of_get_property(np, "port1", NULL))
153 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
154
155 pdata->operating_mode = FSL_USB2_MPH_HOST;
156 } else {
157 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
158 pdata->invert_drvvbus = 1;
159
160 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
161 pdata->invert_pwr_fault = 1;
162
163 /* setup mode selected in the device tree */
164 pdata->operating_mode = dev_data->op_mode;
165 }
166
167 prop = of_get_property(np, "phy_type", NULL);
168 pdata->phy_mode = determine_usb_phy(prop);
169
170 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
171 if (!dev_data->drivers[i])
172 continue;
173 usb_dev = fsl_usb2_device_register(ofdev, pdata,
174 dev_data->drivers[i], idx);
175 if (IS_ERR(usb_dev)) {
176 dev_err(&ofdev->dev, "Can't register usb device\n");
177 return PTR_ERR(usb_dev);
178 }
179 }
180 idx++;
181 return 0;
182}
183
184static int __devexit __unregister_subdev(struct device *dev, void *d)
185{
186 platform_device_unregister(to_platform_device(dev));
187 return 0;
188}
189
190static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
191{
192 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
193 return 0;
194}
195
196#ifdef CONFIG_PPC_MPC512x
197
198#define USBGENCTRL 0x200 /* NOTE: big endian */
199#define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */
200#define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/
201#define GC_PPP (1 << 3) /* Inv. Port Power Polarity */
202#define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */
203#define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */
204#define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */
205
206#define ISIPHYCTRL 0x204 /* NOTE: big endian */
207#define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */
208#define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */
209#define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */
210#define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */
211#define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */
212
213int fsl_usb2_mpc5121_init(struct platform_device *pdev)
214{
215 struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
216 struct clk *clk;
217 char clk_name[10];
218 int base, clk_num;
219
220 base = pdev->resource->start & 0xf000;
221 if (base == 0x3000)
222 clk_num = 1;
223 else if (base == 0x4000)
224 clk_num = 2;
225 else
226 return -ENODEV;
227
228 snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num);
229 clk = clk_get(&pdev->dev, clk_name);
230 if (IS_ERR(clk)) {
231 dev_err(&pdev->dev, "failed to get clk\n");
232 return PTR_ERR(clk);
233 }
234
235 clk_enable(clk);
236 pdata->clk = clk;
237
238 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
239 u32 reg = 0;
240
241 if (pdata->invert_drvvbus)
242 reg |= GC_PPP;
243
244 if (pdata->invert_pwr_fault)
245 reg |= GC_PFP;
246
247 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
248 out_be32(pdata->regs + USBGENCTRL, reg);
249 }
250 return 0;
251}
252
253static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
254{
255 struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
256
257 pdata->regs = NULL;
258
259 if (pdata->clk) {
260 clk_disable(pdata->clk);
261 clk_put(pdata->clk);
262 }
263}
264
265static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
266 .big_endian_desc = 1,
267 .big_endian_mmio = 1,
268 .es = 1,
269 .have_sysif_regs = 0,
270 .le_setup_buf = 1,
271 .init = fsl_usb2_mpc5121_init,
272 .exit = fsl_usb2_mpc5121_exit,
273};
274#endif /* CONFIG_PPC_MPC512x */
275
276static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
277 .have_sysif_regs = 1,
278};
279
280static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
281 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
282 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
283#ifdef CONFIG_PPC_MPC512x
284 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
285#endif
286 {},
287};
288
289static struct platform_driver fsl_usb2_mph_dr_driver = {
290 .driver = {
291 .name = "fsl-usb2-mph-dr",
292 .owner = THIS_MODULE,
293 .of_match_table = fsl_usb2_mph_dr_of_match,
294 },
295 .probe = fsl_usb2_mph_dr_of_probe,
296 .remove = __devexit_p(fsl_usb2_mph_dr_of_remove),
297};
298
299static int __init fsl_usb2_mph_dr_init(void)
300{
301 return platform_driver_register(&fsl_usb2_mph_dr_driver);
302}
303module_init(fsl_usb2_mph_dr_init);
304
305static void __exit fsl_usb2_mph_dr_exit(void)
306{
307 platform_driver_unregister(&fsl_usb2_mph_dr_driver);
308}
309module_exit(fsl_usb2_mph_dr_exit);
310
311MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
312MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
313MODULE_LICENSE("GPL");
1/*
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>
18#include <linux/clk.h>
19#include <linux/module.h>
20
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
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]; /* mode not specified, use host */
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, "serial"))
73 return FSL_USB2_PHY_SERIAL;
74
75 return FSL_USB2_PHY_NONE;
76}
77
78static 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)
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 = *ofdev->dev.dma_mask;
98
99 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
100 if (retval)
101 goto error;
102
103 if (num) {
104 retval = platform_device_add_resources(pdev, res, num);
105 if (retval)
106 goto error;
107 }
108
109 retval = platform_device_add(pdev);
110 if (retval)
111 goto error;
112
113 return pdev;
114
115error:
116 platform_device_put(pdev);
117 return ERR_PTR(retval);
118}
119
120static const struct of_device_id fsl_usb2_mph_dr_of_match[];
121
122static int usb_get_ver_info(struct device_node *np)
123{
124 int ver = -1;
125
126 /*
127 * returns 1 for usb controller version 1.6
128 * returns 2 for usb controller version 2.2
129 * returns 0 otherwise
130 */
131 if (of_device_is_compatible(np, "fsl-usb2-dr")) {
132 if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6"))
133 ver = FSL_USB_VER_1_6;
134 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2"))
135 ver = FSL_USB_VER_2_2;
136 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4"))
137 ver = FSL_USB_VER_2_4;
138 else /* for previous controller versions */
139 ver = FSL_USB_VER_OLD;
140
141 if (ver > -1)
142 return ver;
143 }
144
145 if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr"))
146 return FSL_USB_VER_OLD;
147
148 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
149 if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6"))
150 ver = FSL_USB_VER_1_6;
151 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2"))
152 ver = FSL_USB_VER_2_2;
153 else /* for previous controller versions */
154 ver = FSL_USB_VER_OLD;
155 }
156
157 return ver;
158}
159
160static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
161{
162 struct device_node *np = ofdev->dev.of_node;
163 struct platform_device *usb_dev;
164 struct fsl_usb2_platform_data data, *pdata;
165 struct fsl_usb2_dev_data *dev_data;
166 const struct of_device_id *match;
167 const unsigned char *prop;
168 static unsigned int idx;
169 int i;
170
171 if (!of_device_is_available(np))
172 return -ENODEV;
173
174 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
175 if (!match)
176 return -ENODEV;
177
178 pdata = &data;
179 if (match->data)
180 memcpy(pdata, match->data, sizeof(data));
181 else
182 memset(pdata, 0, sizeof(data));
183
184 dev_data = get_dr_mode_data(np);
185
186 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
187 if (of_get_property(np, "port0", NULL))
188 pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
189
190 if (of_get_property(np, "port1", NULL))
191 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
192
193 pdata->operating_mode = FSL_USB2_MPH_HOST;
194 } else {
195 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
196 pdata->invert_drvvbus = 1;
197
198 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
199 pdata->invert_pwr_fault = 1;
200
201 /* setup mode selected in the device tree */
202 pdata->operating_mode = dev_data->op_mode;
203 }
204
205 prop = of_get_property(np, "phy_type", NULL);
206 pdata->phy_mode = determine_usb_phy(prop);
207 pdata->controller_ver = usb_get_ver_info(np);
208
209 if (pdata->have_sysif_regs) {
210 if (pdata->controller_ver < 0) {
211 dev_warn(&ofdev->dev, "Could not get controller version\n");
212 return -ENODEV;
213 }
214 }
215
216 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
217 if (!dev_data->drivers[i])
218 continue;
219 usb_dev = fsl_usb2_device_register(ofdev, pdata,
220 dev_data->drivers[i], idx);
221 if (IS_ERR(usb_dev)) {
222 dev_err(&ofdev->dev, "Can't register usb device\n");
223 return PTR_ERR(usb_dev);
224 }
225 }
226 idx++;
227 return 0;
228}
229
230static int __unregister_subdev(struct device *dev, void *d)
231{
232 platform_device_unregister(to_platform_device(dev));
233 return 0;
234}
235
236static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
237{
238 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
239 return 0;
240}
241
242#ifdef CONFIG_PPC_MPC512x
243
244#define USBGENCTRL 0x200 /* NOTE: big endian */
245#define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */
246#define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/
247#define GC_PPP (1 << 3) /* Inv. Port Power Polarity */
248#define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */
249#define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */
250#define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */
251
252#define ISIPHYCTRL 0x204 /* NOTE: big endian */
253#define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */
254#define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */
255#define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */
256#define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */
257#define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */
258
259int fsl_usb2_mpc5121_init(struct platform_device *pdev)
260{
261 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
262 struct clk *clk;
263 int err;
264
265 clk = devm_clk_get(pdev->dev.parent, "ipg");
266 if (IS_ERR(clk)) {
267 dev_err(&pdev->dev, "failed to get clk\n");
268 return PTR_ERR(clk);
269 }
270 err = clk_prepare_enable(clk);
271 if (err) {
272 dev_err(&pdev->dev, "failed to enable clk\n");
273 return err;
274 }
275 pdata->clk = clk;
276
277 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
278 u32 reg = 0;
279
280 if (pdata->invert_drvvbus)
281 reg |= GC_PPP;
282
283 if (pdata->invert_pwr_fault)
284 reg |= GC_PFP;
285
286 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
287 out_be32(pdata->regs + USBGENCTRL, reg);
288 }
289 return 0;
290}
291
292static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
293{
294 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
295
296 pdata->regs = NULL;
297
298 if (pdata->clk)
299 clk_disable_unprepare(pdata->clk);
300}
301
302static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
303 .big_endian_desc = 1,
304 .big_endian_mmio = 1,
305 .es = 1,
306 .have_sysif_regs = 0,
307 .le_setup_buf = 1,
308 .init = fsl_usb2_mpc5121_init,
309 .exit = fsl_usb2_mpc5121_exit,
310};
311#endif /* CONFIG_PPC_MPC512x */
312
313static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
314 .have_sysif_regs = 1,
315};
316
317static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
318 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
319 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
320#ifdef CONFIG_PPC_MPC512x
321 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
322#endif
323 {},
324};
325
326static struct platform_driver fsl_usb2_mph_dr_driver = {
327 .driver = {
328 .name = "fsl-usb2-mph-dr",
329 .owner = THIS_MODULE,
330 .of_match_table = fsl_usb2_mph_dr_of_match,
331 },
332 .probe = fsl_usb2_mph_dr_of_probe,
333 .remove = fsl_usb2_mph_dr_of_remove,
334};
335
336module_platform_driver(fsl_usb2_mph_dr_driver);
337
338MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
339MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
340MODULE_LICENSE("GPL");