diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-22 23:30:48 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-22 23:30:48 -0400 |
commit | 5cc103506289de7ee0a0b526ae0381541990cad4 (patch) | |
tree | ae8a4958e70c6d1295030b40e333dcc007b3c074 /drivers/usb/host/fsl-mph-dr-of.c | |
parent | 73ecf3a6e3f0206bf56a0fefe3b3eda042fb7034 (diff) | |
parent | 92ca0dc5ee022e4c0e488177e1d8865a0778c6c2 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (141 commits)
USB: mct_u232: fix broken close
USB: gadget: amd5536udc.c: fix error path
USB: imx21-hcd - fix off by one resource size calculation
usb: gadget: fix Kconfig warning
usb: r8a66597-udc: Add processing when USB was removed.
mxc_udc: add workaround for ENGcm09152 for i.MX35
USB: ftdi_sio: add device ids for ScienceScope
USB: musb: AM35x: Workaround for fifo read issue
USB: musb: add musb support for AM35x
USB: AM35x: Add musb support
usb: Fix linker errors with CONFIG_PM=n
USB: ohci-sh - use resource_size instead of defining its own resource_len macro
USB: isp1362-hcd - use resource_size instead of defining its own resource_len macro
USB: isp116x-hcd - use resource_size instead of defining its own resource_len macro
USB: xhci: Fix compile error when CONFIG_PM=n
USB: accept some invalid ep0-maxpacket values
USB: xHCI: PCI power management implementation
USB: xHCI: bus power management implementation
USB: xHCI: port remote wakeup implementation
USB: xHCI: port power management implementation
...
Manually fix up (non-data) conflict: the SCSI merge gad renamed the
'hw_sector_size' member to 'physical_block_size', and the USB tree
brought a new use of it.
Diffstat (limited to 'drivers/usb/host/fsl-mph-dr-of.c')
-rw-r--r-- | drivers/usb/host/fsl-mph-dr-of.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c new file mode 100644 index 000000000000..574b99ea0700 --- /dev/null +++ b/drivers/usb/host/fsl-mph-dr-of.c | |||
@@ -0,0 +1,308 @@ | |||
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 | |||
20 | struct 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 | |||
26 | struct 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 | |||
44 | struct 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 | |||
61 | static 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 | |||
77 | struct 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 | |||
115 | error: | ||
116 | platform_device_put(pdev); | ||
117 | return ERR_PTR(retval); | ||
118 | } | ||
119 | |||
120 | static const struct of_device_id fsl_usb2_mph_dr_of_match[]; | ||
121 | |||
122 | static 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 | |||
184 | static int __devexit __unregister_subdev(struct device *dev, void *d) | ||
185 | { | ||
186 | platform_device_unregister(to_platform_device(dev)); | ||
187 | return 0; | ||
188 | } | ||
189 | |||
190 | static 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 | |||
213 | int 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 | |||
253 | static 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 | |||
265 | struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = { | ||
266 | .big_endian_desc = 1, | ||
267 | .big_endian_mmio = 1, | ||
268 | .es = 1, | ||
269 | .le_setup_buf = 1, | ||
270 | .init = fsl_usb2_mpc5121_init, | ||
271 | .exit = fsl_usb2_mpc5121_exit, | ||
272 | }; | ||
273 | #endif /* CONFIG_PPC_MPC512x */ | ||
274 | |||
275 | static const struct of_device_id fsl_usb2_mph_dr_of_match[] = { | ||
276 | { .compatible = "fsl-usb2-mph", }, | ||
277 | { .compatible = "fsl-usb2-dr", }, | ||
278 | #ifdef CONFIG_PPC_MPC512x | ||
279 | { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, }, | ||
280 | #endif | ||
281 | {}, | ||
282 | }; | ||
283 | |||
284 | static struct platform_driver fsl_usb2_mph_dr_driver = { | ||
285 | .driver = { | ||
286 | .name = "fsl-usb2-mph-dr", | ||
287 | .owner = THIS_MODULE, | ||
288 | .of_match_table = fsl_usb2_mph_dr_of_match, | ||
289 | }, | ||
290 | .probe = fsl_usb2_mph_dr_of_probe, | ||
291 | .remove = __devexit_p(fsl_usb2_mph_dr_of_remove), | ||
292 | }; | ||
293 | |||
294 | static int __init fsl_usb2_mph_dr_init(void) | ||
295 | { | ||
296 | return platform_driver_register(&fsl_usb2_mph_dr_driver); | ||
297 | } | ||
298 | module_init(fsl_usb2_mph_dr_init); | ||
299 | |||
300 | static void __exit fsl_usb2_mph_dr_exit(void) | ||
301 | { | ||
302 | platform_driver_unregister(&fsl_usb2_mph_dr_driver); | ||
303 | } | ||
304 | module_exit(fsl_usb2_mph_dr_exit); | ||
305 | |||
306 | MODULE_DESCRIPTION("FSL MPH DR OF devices driver"); | ||
307 | MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>"); | ||
308 | MODULE_LICENSE("GPL"); | ||