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17cdd29d KM |
1 | /** |
2 | * omap-usb-host.c - The USBHS core driver for OMAP EHCI & OHCI | |
3 | * | |
4 | * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com | |
5 | * Author: Keshava Munegowda <keshava_mgowda@ti.com> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 of | |
9 | * the License as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | #include <linux/kernel.h> | |
417e206b | 20 | #include <linux/module.h> |
17cdd29d KM |
21 | #include <linux/types.h> |
22 | #include <linux/slab.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/platform_device.h> | |
25 | #include <linux/clk.h> | |
26 | #include <linux/dma-mapping.h> | |
27 | #include <linux/spinlock.h> | |
13176a89 | 28 | #include <plat/cpu.h> |
17cdd29d | 29 | #include <plat/usb.h> |
1e7fe1a9 | 30 | #include <linux/pm_runtime.h> |
17cdd29d | 31 | |
a6d3a662 | 32 | #define USBHS_DRIVER_NAME "usbhs_omap" |
17cdd29d KM |
33 | #define OMAP_EHCI_DEVICE "ehci-omap" |
34 | #define OMAP_OHCI_DEVICE "ohci-omap3" | |
35 | ||
36 | /* OMAP USBHOST Register addresses */ | |
37 | ||
38 | /* TLL Register Set */ | |
39 | #define OMAP_USBTLL_REVISION (0x00) | |
40 | #define OMAP_USBTLL_SYSCONFIG (0x10) | |
41 | #define OMAP_USBTLL_SYSCONFIG_CACTIVITY (1 << 8) | |
42 | #define OMAP_USBTLL_SYSCONFIG_SIDLEMODE (1 << 3) | |
43 | #define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP (1 << 2) | |
44 | #define OMAP_USBTLL_SYSCONFIG_SOFTRESET (1 << 1) | |
45 | #define OMAP_USBTLL_SYSCONFIG_AUTOIDLE (1 << 0) | |
46 | ||
47 | #define OMAP_USBTLL_SYSSTATUS (0x14) | |
48 | #define OMAP_USBTLL_SYSSTATUS_RESETDONE (1 << 0) | |
49 | ||
50 | #define OMAP_USBTLL_IRQSTATUS (0x18) | |
51 | #define OMAP_USBTLL_IRQENABLE (0x1C) | |
52 | ||
53 | #define OMAP_TLL_SHARED_CONF (0x30) | |
54 | #define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN (1 << 6) | |
55 | #define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN (1 << 5) | |
56 | #define OMAP_TLL_SHARED_CONF_USB_DIVRATION (1 << 2) | |
57 | #define OMAP_TLL_SHARED_CONF_FCLK_REQ (1 << 1) | |
58 | #define OMAP_TLL_SHARED_CONF_FCLK_IS_ON (1 << 0) | |
59 | ||
60 | #define OMAP_TLL_CHANNEL_CONF(num) (0x040 + 0x004 * num) | |
61 | #define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT 24 | |
62 | #define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF (1 << 11) | |
63 | #define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE (1 << 10) | |
64 | #define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE (1 << 9) | |
65 | #define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE (1 << 8) | |
66 | #define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS (1 << 1) | |
67 | #define OMAP_TLL_CHANNEL_CONF_CHANEN (1 << 0) | |
68 | ||
69 | #define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0 0x0 | |
70 | #define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM 0x1 | |
71 | #define OMAP_TLL_FSLSMODE_3PIN_PHY 0x2 | |
72 | #define OMAP_TLL_FSLSMODE_4PIN_PHY 0x3 | |
73 | #define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0 0x4 | |
74 | #define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM 0x5 | |
75 | #define OMAP_TLL_FSLSMODE_3PIN_TLL 0x6 | |
76 | #define OMAP_TLL_FSLSMODE_4PIN_TLL 0x7 | |
77 | #define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0 0xA | |
78 | #define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM 0xB | |
79 | ||
80 | #define OMAP_TLL_ULPI_FUNCTION_CTRL(num) (0x804 + 0x100 * num) | |
81 | #define OMAP_TLL_ULPI_INTERFACE_CTRL(num) (0x807 + 0x100 * num) | |
82 | #define OMAP_TLL_ULPI_OTG_CTRL(num) (0x80A + 0x100 * num) | |
83 | #define OMAP_TLL_ULPI_INT_EN_RISE(num) (0x80D + 0x100 * num) | |
84 | #define OMAP_TLL_ULPI_INT_EN_FALL(num) (0x810 + 0x100 * num) | |
85 | #define OMAP_TLL_ULPI_INT_STATUS(num) (0x813 + 0x100 * num) | |
86 | #define OMAP_TLL_ULPI_INT_LATCH(num) (0x814 + 0x100 * num) | |
87 | #define OMAP_TLL_ULPI_DEBUG(num) (0x815 + 0x100 * num) | |
88 | #define OMAP_TLL_ULPI_SCRATCH_REGISTER(num) (0x816 + 0x100 * num) | |
89 | ||
90 | #define OMAP_TLL_CHANNEL_COUNT 3 | |
91 | #define OMAP_TLL_CHANNEL_1_EN_MASK (1 << 0) | |
92 | #define OMAP_TLL_CHANNEL_2_EN_MASK (1 << 1) | |
93 | #define OMAP_TLL_CHANNEL_3_EN_MASK (1 << 2) | |
94 | ||
95 | /* UHH Register Set */ | |
96 | #define OMAP_UHH_REVISION (0x00) | |
97 | #define OMAP_UHH_SYSCONFIG (0x10) | |
98 | #define OMAP_UHH_SYSCONFIG_MIDLEMODE (1 << 12) | |
99 | #define OMAP_UHH_SYSCONFIG_CACTIVITY (1 << 8) | |
100 | #define OMAP_UHH_SYSCONFIG_SIDLEMODE (1 << 3) | |
101 | #define OMAP_UHH_SYSCONFIG_ENAWAKEUP (1 << 2) | |
102 | #define OMAP_UHH_SYSCONFIG_SOFTRESET (1 << 1) | |
103 | #define OMAP_UHH_SYSCONFIG_AUTOIDLE (1 << 0) | |
104 | ||
105 | #define OMAP_UHH_SYSSTATUS (0x14) | |
106 | #define OMAP_UHH_HOSTCONFIG (0x40) | |
107 | #define OMAP_UHH_HOSTCONFIG_ULPI_BYPASS (1 << 0) | |
108 | #define OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS (1 << 0) | |
109 | #define OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS (1 << 11) | |
110 | #define OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS (1 << 12) | |
111 | #define OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN (1 << 2) | |
112 | #define OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN (1 << 3) | |
113 | #define OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN (1 << 4) | |
114 | #define OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN (1 << 5) | |
115 | #define OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS (1 << 8) | |
116 | #define OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS (1 << 9) | |
117 | #define OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS (1 << 10) | |
118 | #define OMAP4_UHH_HOSTCONFIG_APP_START_CLK (1 << 31) | |
119 | ||
120 | /* OMAP4-specific defines */ | |
121 | #define OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR (3 << 2) | |
122 | #define OMAP4_UHH_SYSCONFIG_NOIDLE (1 << 2) | |
123 | #define OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR (3 << 4) | |
124 | #define OMAP4_UHH_SYSCONFIG_NOSTDBY (1 << 4) | |
125 | #define OMAP4_UHH_SYSCONFIG_SOFTRESET (1 << 0) | |
126 | ||
127 | #define OMAP4_P1_MODE_CLEAR (3 << 16) | |
128 | #define OMAP4_P1_MODE_TLL (1 << 16) | |
129 | #define OMAP4_P1_MODE_HSIC (3 << 16) | |
130 | #define OMAP4_P2_MODE_CLEAR (3 << 18) | |
131 | #define OMAP4_P2_MODE_TLL (1 << 18) | |
132 | #define OMAP4_P2_MODE_HSIC (3 << 18) | |
133 | ||
134 | #define OMAP_REV2_TLL_CHANNEL_COUNT 2 | |
135 | ||
136 | #define OMAP_UHH_DEBUG_CSR (0x44) | |
137 | ||
138 | /* Values of UHH_REVISION - Note: these are not given in the TRM */ | |
139 | #define OMAP_USBHS_REV1 0x00000010 /* OMAP3 */ | |
140 | #define OMAP_USBHS_REV2 0x50700100 /* OMAP4 */ | |
141 | ||
142 | #define is_omap_usbhs_rev1(x) (x->usbhs_rev == OMAP_USBHS_REV1) | |
143 | #define is_omap_usbhs_rev2(x) (x->usbhs_rev == OMAP_USBHS_REV2) | |
144 | ||
145 | #define is_ehci_phy_mode(x) (x == OMAP_EHCI_PORT_MODE_PHY) | |
146 | #define is_ehci_tll_mode(x) (x == OMAP_EHCI_PORT_MODE_TLL) | |
147 | #define is_ehci_hsic_mode(x) (x == OMAP_EHCI_PORT_MODE_HSIC) | |
148 | ||
149 | ||
150 | struct usbhs_hcd_omap { | |
17cdd29d KM |
151 | struct clk *xclk60mhsp1_ck; |
152 | struct clk *xclk60mhsp2_ck; | |
153 | struct clk *utmi_p1_fck; | |
154 | struct clk *usbhost_p1_fck; | |
155 | struct clk *usbtll_p1_fck; | |
156 | struct clk *utmi_p2_fck; | |
157 | struct clk *usbhost_p2_fck; | |
158 | struct clk *usbtll_p2_fck; | |
159 | struct clk *init_60m_fclk; | |
1e7fe1a9 | 160 | struct clk *ehci_logic_fck; |
17cdd29d KM |
161 | |
162 | void __iomem *uhh_base; | |
163 | void __iomem *tll_base; | |
164 | ||
165 | struct usbhs_omap_platform_data platdata; | |
166 | ||
167 | u32 usbhs_rev; | |
168 | spinlock_t lock; | |
17cdd29d KM |
169 | }; |
170 | /*-------------------------------------------------------------------------*/ | |
171 | ||
172 | const char usbhs_driver_name[] = USBHS_DRIVER_NAME; | |
cbb8c220 | 173 | static u64 usbhs_dmamask = DMA_BIT_MASK(32); |
17cdd29d KM |
174 | |
175 | /*-------------------------------------------------------------------------*/ | |
176 | ||
177 | static inline void usbhs_write(void __iomem *base, u32 reg, u32 val) | |
178 | { | |
179 | __raw_writel(val, base + reg); | |
180 | } | |
181 | ||
182 | static inline u32 usbhs_read(void __iomem *base, u32 reg) | |
183 | { | |
184 | return __raw_readl(base + reg); | |
185 | } | |
186 | ||
187 | static inline void usbhs_writeb(void __iomem *base, u8 reg, u8 val) | |
188 | { | |
189 | __raw_writeb(val, base + reg); | |
190 | } | |
191 | ||
192 | static inline u8 usbhs_readb(void __iomem *base, u8 reg) | |
193 | { | |
194 | return __raw_readb(base + reg); | |
195 | } | |
196 | ||
197 | /*-------------------------------------------------------------------------*/ | |
198 | ||
199 | static struct platform_device *omap_usbhs_alloc_child(const char *name, | |
200 | struct resource *res, int num_resources, void *pdata, | |
201 | size_t pdata_size, struct device *dev) | |
202 | { | |
203 | struct platform_device *child; | |
204 | int ret; | |
205 | ||
206 | child = platform_device_alloc(name, 0); | |
207 | ||
208 | if (!child) { | |
209 | dev_err(dev, "platform_device_alloc %s failed\n", name); | |
210 | goto err_end; | |
211 | } | |
212 | ||
213 | ret = platform_device_add_resources(child, res, num_resources); | |
214 | if (ret) { | |
215 | dev_err(dev, "platform_device_add_resources failed\n"); | |
216 | goto err_alloc; | |
217 | } | |
218 | ||
219 | ret = platform_device_add_data(child, pdata, pdata_size); | |
220 | if (ret) { | |
221 | dev_err(dev, "platform_device_add_data failed\n"); | |
222 | goto err_alloc; | |
223 | } | |
224 | ||
225 | child->dev.dma_mask = &usbhs_dmamask; | |
cbb8c220 | 226 | dma_set_coherent_mask(&child->dev, DMA_BIT_MASK(32)); |
17cdd29d KM |
227 | child->dev.parent = dev; |
228 | ||
229 | ret = platform_device_add(child); | |
230 | if (ret) { | |
231 | dev_err(dev, "platform_device_add failed\n"); | |
232 | goto err_alloc; | |
233 | } | |
234 | ||
235 | return child; | |
236 | ||
237 | err_alloc: | |
238 | platform_device_put(child); | |
239 | ||
240 | err_end: | |
241 | return NULL; | |
242 | } | |
243 | ||
244 | static int omap_usbhs_alloc_children(struct platform_device *pdev) | |
245 | { | |
246 | struct device *dev = &pdev->dev; | |
247 | struct usbhs_hcd_omap *omap; | |
248 | struct ehci_hcd_omap_platform_data *ehci_data; | |
249 | struct ohci_hcd_omap_platform_data *ohci_data; | |
250 | struct platform_device *ehci; | |
251 | struct platform_device *ohci; | |
252 | struct resource *res; | |
253 | struct resource resources[2]; | |
254 | int ret; | |
255 | ||
256 | omap = platform_get_drvdata(pdev); | |
257 | ehci_data = omap->platdata.ehci_data; | |
258 | ohci_data = omap->platdata.ohci_data; | |
259 | ||
260 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ehci"); | |
261 | if (!res) { | |
262 | dev_err(dev, "EHCI get resource IORESOURCE_MEM failed\n"); | |
263 | ret = -ENODEV; | |
264 | goto err_end; | |
265 | } | |
266 | resources[0] = *res; | |
267 | ||
268 | res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ehci-irq"); | |
269 | if (!res) { | |
270 | dev_err(dev, " EHCI get resource IORESOURCE_IRQ failed\n"); | |
271 | ret = -ENODEV; | |
272 | goto err_end; | |
273 | } | |
274 | resources[1] = *res; | |
275 | ||
276 | ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, ehci_data, | |
277 | sizeof(*ehci_data), dev); | |
278 | ||
279 | if (!ehci) { | |
280 | dev_err(dev, "omap_usbhs_alloc_child failed\n"); | |
d910774f | 281 | ret = -ENOMEM; |
17cdd29d KM |
282 | goto err_end; |
283 | } | |
284 | ||
285 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ohci"); | |
286 | if (!res) { | |
287 | dev_err(dev, "OHCI get resource IORESOURCE_MEM failed\n"); | |
288 | ret = -ENODEV; | |
289 | goto err_ehci; | |
290 | } | |
291 | resources[0] = *res; | |
292 | ||
293 | res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ohci-irq"); | |
294 | if (!res) { | |
295 | dev_err(dev, "OHCI get resource IORESOURCE_IRQ failed\n"); | |
296 | ret = -ENODEV; | |
297 | goto err_ehci; | |
298 | } | |
299 | resources[1] = *res; | |
300 | ||
301 | ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, ohci_data, | |
302 | sizeof(*ohci_data), dev); | |
303 | if (!ohci) { | |
304 | dev_err(dev, "omap_usbhs_alloc_child failed\n"); | |
d910774f | 305 | ret = -ENOMEM; |
17cdd29d KM |
306 | goto err_ehci; |
307 | } | |
308 | ||
309 | return 0; | |
310 | ||
311 | err_ehci: | |
d910774f | 312 | platform_device_unregister(ehci); |
17cdd29d KM |
313 | |
314 | err_end: | |
315 | return ret; | |
316 | } | |
317 | ||
17cdd29d KM |
318 | static bool is_ohci_port(enum usbhs_omap_port_mode pmode) |
319 | { | |
320 | switch (pmode) { | |
321 | case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: | |
322 | case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: | |
323 | case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: | |
324 | case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: | |
325 | case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: | |
326 | case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: | |
327 | case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: | |
328 | case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: | |
329 | case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: | |
330 | case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: | |
331 | return true; | |
332 | ||
333 | default: | |
334 | return false; | |
335 | } | |
336 | } | |
337 | ||
338 | /* | |
339 | * convert the port-mode enum to a value we can use in the FSLSMODE | |
340 | * field of USBTLL_CHANNEL_CONF | |
341 | */ | |
342 | static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode) | |
343 | { | |
344 | switch (mode) { | |
345 | case OMAP_USBHS_PORT_MODE_UNUSED: | |
346 | case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: | |
347 | return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0; | |
348 | ||
349 | case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: | |
350 | return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM; | |
351 | ||
352 | case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: | |
353 | return OMAP_TLL_FSLSMODE_3PIN_PHY; | |
354 | ||
355 | case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: | |
356 | return OMAP_TLL_FSLSMODE_4PIN_PHY; | |
357 | ||
358 | case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: | |
359 | return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0; | |
360 | ||
361 | case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: | |
362 | return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM; | |
363 | ||
364 | case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: | |
365 | return OMAP_TLL_FSLSMODE_3PIN_TLL; | |
366 | ||
367 | case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: | |
368 | return OMAP_TLL_FSLSMODE_4PIN_TLL; | |
369 | ||
370 | case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: | |
371 | return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0; | |
372 | ||
373 | case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: | |
374 | return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM; | |
375 | default: | |
376 | pr_warning("Invalid port mode, using default\n"); | |
377 | return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0; | |
378 | } | |
379 | } | |
380 | ||
381 | static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count) | |
382 | { | |
383 | struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); | |
384 | struct usbhs_omap_platform_data *pdata = dev->platform_data; | |
385 | unsigned reg; | |
386 | int i; | |
387 | ||
388 | /* Program Common TLL register */ | |
389 | reg = usbhs_read(omap->tll_base, OMAP_TLL_SHARED_CONF); | |
390 | reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON | |
391 | | OMAP_TLL_SHARED_CONF_USB_DIVRATION); | |
392 | reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN; | |
393 | reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN; | |
394 | ||
395 | usbhs_write(omap->tll_base, OMAP_TLL_SHARED_CONF, reg); | |
396 | ||
397 | /* Enable channels now */ | |
398 | for (i = 0; i < tll_channel_count; i++) { | |
399 | reg = usbhs_read(omap->tll_base, | |
400 | OMAP_TLL_CHANNEL_CONF(i)); | |
401 | ||
402 | if (is_ohci_port(pdata->port_mode[i])) { | |
403 | reg |= ohci_omap3_fslsmode(pdata->port_mode[i]) | |
404 | << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT; | |
405 | reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS; | |
406 | } else if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_TLL) { | |
407 | ||
408 | /* Disable AutoIdle, BitStuffing and use SDR Mode */ | |
409 | reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE | |
410 | | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF | |
411 | | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE); | |
412 | ||
17cdd29d KM |
413 | } else |
414 | continue; | |
415 | ||
416 | reg |= OMAP_TLL_CHANNEL_CONF_CHANEN; | |
417 | usbhs_write(omap->tll_base, | |
418 | OMAP_TLL_CHANNEL_CONF(i), reg); | |
419 | ||
420 | usbhs_writeb(omap->tll_base, | |
421 | OMAP_TLL_ULPI_SCRATCH_REGISTER(i), 0xbe); | |
422 | } | |
423 | } | |
424 | ||
1e7fe1a9 | 425 | static int usbhs_runtime_resume(struct device *dev) |
17cdd29d KM |
426 | { |
427 | struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); | |
428 | struct usbhs_omap_platform_data *pdata = &omap->platdata; | |
1e7fe1a9 KM |
429 | unsigned long flags; |
430 | ||
431 | dev_dbg(dev, "usbhs_runtime_resume\n"); | |
17cdd29d | 432 | |
17cdd29d KM |
433 | if (!pdata) { |
434 | dev_dbg(dev, "missing platform_data\n"); | |
d11536e4 | 435 | return -ENODEV; |
17cdd29d KM |
436 | } |
437 | ||
438 | spin_lock_irqsave(&omap->lock, flags); | |
17cdd29d | 439 | |
1e7fe1a9 KM |
440 | if (omap->ehci_logic_fck && !IS_ERR(omap->ehci_logic_fck)) |
441 | clk_enable(omap->ehci_logic_fck); | |
442 | ||
443 | if (is_ehci_tll_mode(pdata->port_mode[0])) { | |
444 | clk_enable(omap->usbhost_p1_fck); | |
445 | clk_enable(omap->usbtll_p1_fck); | |
446 | } | |
447 | if (is_ehci_tll_mode(pdata->port_mode[1])) { | |
448 | clk_enable(omap->usbhost_p2_fck); | |
449 | clk_enable(omap->usbtll_p2_fck); | |
450 | } | |
451 | clk_enable(omap->utmi_p1_fck); | |
452 | clk_enable(omap->utmi_p2_fck); | |
453 | ||
454 | spin_unlock_irqrestore(&omap->lock, flags); | |
455 | ||
456 | return 0; | |
457 | } | |
458 | ||
459 | static int usbhs_runtime_suspend(struct device *dev) | |
460 | { | |
461 | struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); | |
462 | struct usbhs_omap_platform_data *pdata = &omap->platdata; | |
463 | unsigned long flags; | |
464 | ||
465 | dev_dbg(dev, "usbhs_runtime_suspend\n"); | |
466 | ||
467 | if (!pdata) { | |
468 | dev_dbg(dev, "missing platform_data\n"); | |
469 | return -ENODEV; | |
470 | } | |
471 | ||
472 | spin_lock_irqsave(&omap->lock, flags); | |
473 | ||
474 | if (is_ehci_tll_mode(pdata->port_mode[0])) { | |
475 | clk_disable(omap->usbhost_p1_fck); | |
476 | clk_disable(omap->usbtll_p1_fck); | |
477 | } | |
478 | if (is_ehci_tll_mode(pdata->port_mode[1])) { | |
479 | clk_disable(omap->usbhost_p2_fck); | |
480 | clk_disable(omap->usbtll_p2_fck); | |
481 | } | |
482 | clk_disable(omap->utmi_p2_fck); | |
483 | clk_disable(omap->utmi_p1_fck); | |
484 | ||
485 | if (omap->ehci_logic_fck && !IS_ERR(omap->ehci_logic_fck)) | |
486 | clk_disable(omap->ehci_logic_fck); | |
487 | ||
488 | spin_unlock_irqrestore(&omap->lock, flags); | |
489 | ||
490 | return 0; | |
491 | } | |
492 | ||
493 | static void omap_usbhs_init(struct device *dev) | |
494 | { | |
495 | struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); | |
496 | struct usbhs_omap_platform_data *pdata = &omap->platdata; | |
497 | unsigned long flags; | |
498 | unsigned reg; | |
499 | ||
500 | dev_dbg(dev, "starting TI HSUSB Controller\n"); | |
501 | ||
502 | pm_runtime_get_sync(dev); | |
503 | spin_lock_irqsave(&omap->lock, flags); | |
17cdd29d | 504 | |
17cdd29d KM |
505 | omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION); |
506 | dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev); | |
507 | ||
17cdd29d KM |
508 | reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG); |
509 | /* setup ULPI bypass and burst configurations */ | |
510 | reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN | |
511 | | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN | |
512 | | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN); | |
513 | reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK; | |
514 | reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN; | |
515 | ||
516 | if (is_omap_usbhs_rev1(omap)) { | |
517 | if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED) | |
518 | reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS; | |
519 | if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED) | |
520 | reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS; | |
521 | if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED) | |
522 | reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS; | |
523 | ||
524 | /* Bypass the TLL module for PHY mode operation */ | |
525 | if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) { | |
526 | dev_dbg(dev, "OMAP3 ES version <= ES2.1\n"); | |
527 | if (is_ehci_phy_mode(pdata->port_mode[0]) || | |
528 | is_ehci_phy_mode(pdata->port_mode[1]) || | |
529 | is_ehci_phy_mode(pdata->port_mode[2])) | |
530 | reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; | |
531 | else | |
532 | reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; | |
533 | } else { | |
534 | dev_dbg(dev, "OMAP3 ES version > ES2.1\n"); | |
535 | if (is_ehci_phy_mode(pdata->port_mode[0])) | |
536 | reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; | |
537 | else | |
538 | reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; | |
539 | if (is_ehci_phy_mode(pdata->port_mode[1])) | |
540 | reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; | |
541 | else | |
542 | reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; | |
543 | if (is_ehci_phy_mode(pdata->port_mode[2])) | |
544 | reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; | |
545 | else | |
546 | reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; | |
547 | } | |
548 | } else if (is_omap_usbhs_rev2(omap)) { | |
549 | /* Clear port mode fields for PHY mode*/ | |
550 | reg &= ~OMAP4_P1_MODE_CLEAR; | |
551 | reg &= ~OMAP4_P2_MODE_CLEAR; | |
552 | ||
17cdd29d KM |
553 | if (is_ehci_tll_mode(pdata->port_mode[0]) || |
554 | (is_ohci_port(pdata->port_mode[0]))) | |
555 | reg |= OMAP4_P1_MODE_TLL; | |
556 | else if (is_ehci_hsic_mode(pdata->port_mode[0])) | |
557 | reg |= OMAP4_P1_MODE_HSIC; | |
558 | ||
559 | if (is_ehci_tll_mode(pdata->port_mode[1]) || | |
560 | (is_ohci_port(pdata->port_mode[1]))) | |
561 | reg |= OMAP4_P2_MODE_TLL; | |
562 | else if (is_ehci_hsic_mode(pdata->port_mode[1])) | |
563 | reg |= OMAP4_P2_MODE_HSIC; | |
564 | } | |
565 | ||
566 | usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg); | |
567 | dev_dbg(dev, "UHH setup done, uhh_hostconfig=%x\n", reg); | |
568 | ||
569 | if (is_ehci_tll_mode(pdata->port_mode[0]) || | |
570 | is_ehci_tll_mode(pdata->port_mode[1]) || | |
571 | is_ehci_tll_mode(pdata->port_mode[2]) || | |
572 | (is_ohci_port(pdata->port_mode[0])) || | |
573 | (is_ohci_port(pdata->port_mode[1])) || | |
574 | (is_ohci_port(pdata->port_mode[2]))) { | |
575 | ||
576 | /* Enable UTMI mode for required TLL channels */ | |
577 | if (is_omap_usbhs_rev2(omap)) | |
578 | usbhs_omap_tll_init(dev, OMAP_REV2_TLL_CHANNEL_COUNT); | |
579 | else | |
580 | usbhs_omap_tll_init(dev, OMAP_TLL_CHANNEL_COUNT); | |
581 | } | |
582 | ||
d11536e4 | 583 | spin_unlock_irqrestore(&omap->lock, flags); |
1e7fe1a9 KM |
584 | pm_runtime_put_sync(dev); |
585 | } | |
586 | ||
1e7fe1a9 KM |
587 | |
588 | /** | |
589 | * usbhs_omap_probe - initialize TI-based HCDs | |
590 | * | |
591 | * Allocates basic resources for this USB host controller. | |
592 | */ | |
593 | static int __devinit usbhs_omap_probe(struct platform_device *pdev) | |
17cdd29d | 594 | { |
1e7fe1a9 KM |
595 | struct device *dev = &pdev->dev; |
596 | struct usbhs_omap_platform_data *pdata = dev->platform_data; | |
597 | struct usbhs_hcd_omap *omap; | |
598 | struct resource *res; | |
599 | int ret = 0; | |
600 | int i; | |
17cdd29d | 601 | |
1e7fe1a9 KM |
602 | if (!pdata) { |
603 | dev_err(dev, "Missing platform data\n"); | |
604 | ret = -ENOMEM; | |
605 | goto end_probe; | |
606 | } | |
17cdd29d | 607 | |
1e7fe1a9 KM |
608 | omap = kzalloc(sizeof(*omap), GFP_KERNEL); |
609 | if (!omap) { | |
610 | dev_err(dev, "Memory allocation failed\n"); | |
611 | ret = -ENOMEM; | |
612 | goto end_probe; | |
613 | } | |
17cdd29d | 614 | |
1e7fe1a9 | 615 | spin_lock_init(&omap->lock); |
17cdd29d | 616 | |
1e7fe1a9 KM |
617 | for (i = 0; i < OMAP3_HS_USB_PORTS; i++) |
618 | omap->platdata.port_mode[i] = pdata->port_mode[i]; | |
619 | ||
620 | omap->platdata.ehci_data = pdata->ehci_data; | |
621 | omap->platdata.ohci_data = pdata->ohci_data; | |
17cdd29d | 622 | |
1e7fe1a9 | 623 | pm_runtime_enable(dev); |
17cdd29d | 624 | |
17cdd29d | 625 | |
1e7fe1a9 KM |
626 | for (i = 0; i < OMAP3_HS_USB_PORTS; i++) |
627 | if (is_ehci_phy_mode(i) || is_ehci_tll_mode(i) || | |
628 | is_ehci_hsic_mode(i)) { | |
629 | omap->ehci_logic_fck = clk_get(dev, "ehci_logic_fck"); | |
630 | if (IS_ERR(omap->ehci_logic_fck)) { | |
631 | ret = PTR_ERR(omap->ehci_logic_fck); | |
632 | dev_warn(dev, "ehci_logic_fck failed:%d\n", | |
633 | ret); | |
634 | } | |
635 | break; | |
636 | } | |
17cdd29d | 637 | |
1e7fe1a9 KM |
638 | omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk"); |
639 | if (IS_ERR(omap->utmi_p1_fck)) { | |
640 | ret = PTR_ERR(omap->utmi_p1_fck); | |
641 | dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret); | |
642 | goto err_end; | |
17cdd29d KM |
643 | } |
644 | ||
1e7fe1a9 KM |
645 | omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck"); |
646 | if (IS_ERR(omap->xclk60mhsp1_ck)) { | |
647 | ret = PTR_ERR(omap->xclk60mhsp1_ck); | |
648 | dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret); | |
649 | goto err_utmi_p1_fck; | |
650 | } | |
17cdd29d | 651 | |
1e7fe1a9 KM |
652 | omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk"); |
653 | if (IS_ERR(omap->utmi_p2_fck)) { | |
654 | ret = PTR_ERR(omap->utmi_p2_fck); | |
655 | dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret); | |
656 | goto err_xclk60mhsp1_ck; | |
17cdd29d KM |
657 | } |
658 | ||
1e7fe1a9 KM |
659 | omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck"); |
660 | if (IS_ERR(omap->xclk60mhsp2_ck)) { | |
661 | ret = PTR_ERR(omap->xclk60mhsp2_ck); | |
662 | dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret); | |
663 | goto err_utmi_p2_fck; | |
664 | } | |
17cdd29d | 665 | |
1e7fe1a9 KM |
666 | omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk"); |
667 | if (IS_ERR(omap->usbhost_p1_fck)) { | |
668 | ret = PTR_ERR(omap->usbhost_p1_fck); | |
669 | dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret); | |
670 | goto err_xclk60mhsp2_ck; | |
17cdd29d KM |
671 | } |
672 | ||
1e7fe1a9 KM |
673 | omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk"); |
674 | if (IS_ERR(omap->usbtll_p1_fck)) { | |
675 | ret = PTR_ERR(omap->usbtll_p1_fck); | |
676 | dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret); | |
677 | goto err_usbhost_p1_fck; | |
678 | } | |
17cdd29d | 679 | |
1e7fe1a9 KM |
680 | omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk"); |
681 | if (IS_ERR(omap->usbhost_p2_fck)) { | |
682 | ret = PTR_ERR(omap->usbhost_p2_fck); | |
683 | dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret); | |
684 | goto err_usbtll_p1_fck; | |
685 | } | |
17cdd29d | 686 | |
1e7fe1a9 KM |
687 | omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk"); |
688 | if (IS_ERR(omap->usbtll_p2_fck)) { | |
689 | ret = PTR_ERR(omap->usbtll_p2_fck); | |
690 | dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret); | |
691 | goto err_usbhost_p2_fck; | |
17cdd29d KM |
692 | } |
693 | ||
1e7fe1a9 KM |
694 | omap->init_60m_fclk = clk_get(dev, "init_60m_fclk"); |
695 | if (IS_ERR(omap->init_60m_fclk)) { | |
696 | ret = PTR_ERR(omap->init_60m_fclk); | |
697 | dev_err(dev, "init_60m_fclk failed error:%d\n", ret); | |
698 | goto err_usbtll_p2_fck; | |
17cdd29d KM |
699 | } |
700 | ||
1e7fe1a9 KM |
701 | if (is_ehci_phy_mode(pdata->port_mode[0])) { |
702 | /* for OMAP3 , the clk set paretn fails */ | |
703 | ret = clk_set_parent(omap->utmi_p1_fck, | |
704 | omap->xclk60mhsp1_ck); | |
705 | if (ret != 0) | |
706 | dev_err(dev, "xclk60mhsp1_ck set parent" | |
707 | "failed error:%d\n", ret); | |
708 | } else if (is_ehci_tll_mode(pdata->port_mode[0])) { | |
709 | ret = clk_set_parent(omap->utmi_p1_fck, | |
710 | omap->init_60m_fclk); | |
711 | if (ret != 0) | |
712 | dev_err(dev, "init_60m_fclk set parent" | |
713 | "failed error:%d\n", ret); | |
714 | } | |
17cdd29d | 715 | |
1e7fe1a9 KM |
716 | if (is_ehci_phy_mode(pdata->port_mode[1])) { |
717 | ret = clk_set_parent(omap->utmi_p2_fck, | |
718 | omap->xclk60mhsp2_ck); | |
719 | if (ret != 0) | |
720 | dev_err(dev, "xclk60mhsp2_ck set parent" | |
721 | "failed error:%d\n", ret); | |
722 | } else if (is_ehci_tll_mode(pdata->port_mode[1])) { | |
723 | ret = clk_set_parent(omap->utmi_p2_fck, | |
724 | omap->init_60m_fclk); | |
725 | if (ret != 0) | |
726 | dev_err(dev, "init_60m_fclk set parent" | |
727 | "failed error:%d\n", ret); | |
728 | } | |
6eb6fbbf | 729 | |
1e7fe1a9 KM |
730 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh"); |
731 | if (!res) { | |
732 | dev_err(dev, "UHH EHCI get resource failed\n"); | |
733 | ret = -ENODEV; | |
734 | goto err_init_60m_fclk; | |
735 | } | |
6eb6fbbf | 736 | |
1e7fe1a9 KM |
737 | omap->uhh_base = ioremap(res->start, resource_size(res)); |
738 | if (!omap->uhh_base) { | |
739 | dev_err(dev, "UHH ioremap failed\n"); | |
740 | ret = -ENOMEM; | |
741 | goto err_init_60m_fclk; | |
6eb6fbbf | 742 | } |
6eb6fbbf | 743 | |
1e7fe1a9 KM |
744 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll"); |
745 | if (!res) { | |
746 | dev_err(dev, "UHH EHCI get resource failed\n"); | |
747 | ret = -ENODEV; | |
748 | goto err_tll; | |
749 | } | |
17cdd29d | 750 | |
1e7fe1a9 KM |
751 | omap->tll_base = ioremap(res->start, resource_size(res)); |
752 | if (!omap->tll_base) { | |
753 | dev_err(dev, "TLL ioremap failed\n"); | |
754 | ret = -ENOMEM; | |
755 | goto err_tll; | |
756 | } | |
757 | ||
758 | platform_set_drvdata(pdev, omap); | |
759 | ||
f0447a69 | 760 | omap_usbhs_init(dev); |
1e7fe1a9 KM |
761 | ret = omap_usbhs_alloc_children(pdev); |
762 | if (ret) { | |
763 | dev_err(dev, "omap_usbhs_alloc_children failed\n"); | |
764 | goto err_alloc; | |
765 | } | |
766 | ||
1e7fe1a9 KM |
767 | goto end_probe; |
768 | ||
769 | err_alloc: | |
770 | iounmap(omap->tll_base); | |
771 | ||
772 | err_tll: | |
773 | iounmap(omap->uhh_base); | |
774 | ||
775 | err_init_60m_fclk: | |
776 | clk_put(omap->init_60m_fclk); | |
777 | ||
778 | err_usbtll_p2_fck: | |
779 | clk_put(omap->usbtll_p2_fck); | |
780 | ||
781 | err_usbhost_p2_fck: | |
782 | clk_put(omap->usbhost_p2_fck); | |
783 | ||
784 | err_usbtll_p1_fck: | |
785 | clk_put(omap->usbtll_p1_fck); | |
786 | ||
787 | err_usbhost_p1_fck: | |
788 | clk_put(omap->usbhost_p1_fck); | |
789 | ||
790 | err_xclk60mhsp2_ck: | |
791 | clk_put(omap->xclk60mhsp2_ck); | |
792 | ||
793 | err_utmi_p2_fck: | |
794 | clk_put(omap->utmi_p2_fck); | |
795 | ||
796 | err_xclk60mhsp1_ck: | |
797 | clk_put(omap->xclk60mhsp1_ck); | |
798 | ||
799 | err_utmi_p1_fck: | |
800 | clk_put(omap->utmi_p1_fck); | |
801 | ||
802 | err_end: | |
803 | clk_put(omap->ehci_logic_fck); | |
804 | pm_runtime_disable(dev); | |
805 | kfree(omap); | |
806 | ||
807 | end_probe: | |
808 | return ret; | |
17cdd29d | 809 | } |
17cdd29d | 810 | |
1e7fe1a9 KM |
811 | /** |
812 | * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs | |
813 | * @pdev: USB Host Controller being removed | |
814 | * | |
815 | * Reverses the effect of usbhs_omap_probe(). | |
816 | */ | |
817 | static int __devexit usbhs_omap_remove(struct platform_device *pdev) | |
17cdd29d | 818 | { |
1e7fe1a9 KM |
819 | struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev); |
820 | ||
1e7fe1a9 KM |
821 | iounmap(omap->tll_base); |
822 | iounmap(omap->uhh_base); | |
823 | clk_put(omap->init_60m_fclk); | |
824 | clk_put(omap->usbtll_p2_fck); | |
825 | clk_put(omap->usbhost_p2_fck); | |
826 | clk_put(omap->usbtll_p1_fck); | |
827 | clk_put(omap->usbhost_p1_fck); | |
828 | clk_put(omap->xclk60mhsp2_ck); | |
829 | clk_put(omap->utmi_p2_fck); | |
830 | clk_put(omap->xclk60mhsp1_ck); | |
831 | clk_put(omap->utmi_p1_fck); | |
832 | clk_put(omap->ehci_logic_fck); | |
833 | pm_runtime_disable(&pdev->dev); | |
834 | kfree(omap); | |
835 | ||
836 | return 0; | |
17cdd29d | 837 | } |
1e7fe1a9 KM |
838 | |
839 | static const struct dev_pm_ops usbhsomap_dev_pm_ops = { | |
840 | .runtime_suspend = usbhs_runtime_suspend, | |
841 | .runtime_resume = usbhs_runtime_resume, | |
842 | }; | |
17cdd29d KM |
843 | |
844 | static struct platform_driver usbhs_omap_driver = { | |
845 | .driver = { | |
846 | .name = (char *)usbhs_driver_name, | |
847 | .owner = THIS_MODULE, | |
1e7fe1a9 | 848 | .pm = &usbhsomap_dev_pm_ops, |
17cdd29d KM |
849 | }, |
850 | .remove = __exit_p(usbhs_omap_remove), | |
851 | }; | |
852 | ||
853 | MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>"); | |
854 | MODULE_ALIAS("platform:" USBHS_DRIVER_NAME); | |
855 | MODULE_LICENSE("GPL v2"); | |
856 | MODULE_DESCRIPTION("usb host common core driver for omap EHCI and OHCI"); | |
857 | ||
858 | static int __init omap_usbhs_drvinit(void) | |
859 | { | |
860 | return platform_driver_probe(&usbhs_omap_driver, usbhs_omap_probe); | |
861 | } | |
862 | ||
863 | /* | |
864 | * init before ehci and ohci drivers; | |
865 | * The usbhs core driver should be initialized much before | |
866 | * the omap ehci and ohci probe functions are called. | |
867 | */ | |
868 | fs_initcall(omap_usbhs_drvinit); | |
869 | ||
870 | static void __exit omap_usbhs_drvexit(void) | |
871 | { | |
872 | platform_driver_unregister(&usbhs_omap_driver); | |
873 | } | |
874 | module_exit(omap_usbhs_drvexit); |