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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * drivers/usb/host/ehci-orion.c
4 *
5 * Tzachi Perelstein <tzachi@marvell.com>
6 */
7
8#include <linux/kernel.h>
9#include <linux/module.h>
10#include <linux/platform_device.h>
11#include <linux/mbus.h>
12#include <linux/clk.h>
13#include <linux/platform_data/usb-ehci-orion.h>
14#include <linux/of.h>
15#include <linux/phy/phy.h>
16#include <linux/usb.h>
17#include <linux/usb/hcd.h>
18#include <linux/io.h>
19#include <linux/dma-mapping.h>
20
21#include "ehci.h"
22
23#define rdl(off) readl_relaxed(hcd->regs + (off))
24#define wrl(off, val) writel_relaxed((val), hcd->regs + (off))
25
26#define USB_CMD 0x140
27#define USB_CMD_RUN BIT(0)
28#define USB_CMD_RESET BIT(1)
29#define USB_MODE 0x1a8
30#define USB_MODE_MASK GENMASK(1, 0)
31#define USB_MODE_DEVICE 0x2
32#define USB_MODE_HOST 0x3
33#define USB_MODE_SDIS BIT(4)
34#define USB_CAUSE 0x310
35#define USB_MASK 0x314
36#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
37#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
38#define USB_IPG 0x360
39#define USB_PHY_PWR_CTRL 0x400
40#define USB_PHY_TX_CTRL 0x420
41#define USB_PHY_RX_CTRL 0x430
42#define USB_PHY_IVREF_CTRL 0x440
43#define USB_PHY_TST_GRP_CTRL 0x450
44
45#define USB_SBUSCFG 0x90
46
47/* BAWR = BARD = 3 : Align read/write bursts packets larger than 128 bytes */
48#define USB_SBUSCFG_BAWR_ALIGN_128B (0x3 << 6)
49#define USB_SBUSCFG_BARD_ALIGN_128B (0x3 << 3)
50/* AHBBRST = 3 : Align AHB Burst to INCR16 (64 bytes) */
51#define USB_SBUSCFG_AHBBRST_INCR16 (0x3 << 0)
52
53#define USB_SBUSCFG_DEF_VAL (USB_SBUSCFG_BAWR_ALIGN_128B \
54 | USB_SBUSCFG_BARD_ALIGN_128B \
55 | USB_SBUSCFG_AHBBRST_INCR16)
56
57#define DRIVER_DESC "EHCI orion driver"
58
59#define hcd_to_orion_priv(h) ((struct orion_ehci_hcd *)hcd_to_ehci(h)->priv)
60
61struct orion_ehci_hcd {
62 struct clk *clk;
63 struct phy *phy;
64};
65
66static struct hc_driver __read_mostly ehci_orion_hc_driver;
67
68/*
69 * Implement Orion USB controller specification guidelines
70 */
71static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
72{
73 /* The below GLs are according to the Orion Errata document */
74 /*
75 * Clear interrupt cause and mask
76 */
77 wrl(USB_CAUSE, 0);
78 wrl(USB_MASK, 0);
79
80 /*
81 * Reset controller
82 */
83 wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
84 while (rdl(USB_CMD) & USB_CMD_RESET);
85
86 /*
87 * GL# USB-10: Set IPG for non start of frame packets
88 * Bits[14:8]=0xc
89 */
90 wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);
91
92 /*
93 * GL# USB-9: USB 2.0 Power Control
94 * BG_VSEL[7:6]=0x1
95 */
96 wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40);
97
98 /*
99 * GL# USB-1: USB PHY Tx Control - force calibration to '8'
100 * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
101 */
102 wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040);
103
104 /*
105 * GL# USB-3 GL# USB-9: USB PHY Rx Control
106 * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
107 * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
108 */
109 wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010);
110
111 /*
112 * GL# USB-3 GL# USB-9: USB PHY IVREF Control
113 * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
114 */
115 wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32);
116
117 /*
118 * GL# USB-3 GL# USB-9: USB PHY Test Group Control
119 * REG_FIFO_SQ_RST[15]=0
120 */
121 wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
122
123 /*
124 * Stop and reset controller
125 */
126 wrl(USB_CMD, rdl(USB_CMD) & ~USB_CMD_RUN);
127 wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
128 while (rdl(USB_CMD) & USB_CMD_RESET);
129
130 /*
131 * GL# USB-5 Streaming disable REG_USB_MODE[4]=1
132 * TBD: This need to be done after each reset!
133 * GL# USB-4 Setup USB Host mode
134 */
135 wrl(USB_MODE, USB_MODE_SDIS | USB_MODE_HOST);
136}
137
138static void
139ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
140 const struct mbus_dram_target_info *dram)
141{
142 int i;
143
144 for (i = 0; i < 4; i++) {
145 wrl(USB_WINDOW_CTRL(i), 0);
146 wrl(USB_WINDOW_BASE(i), 0);
147 }
148
149 for (i = 0; i < dram->num_cs; i++) {
150 const struct mbus_dram_window *cs = dram->cs + i;
151
152 wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) |
153 (cs->mbus_attr << 8) |
154 (dram->mbus_dram_target_id << 4) | 1);
155 wrl(USB_WINDOW_BASE(i), cs->base);
156 }
157}
158
159static int ehci_orion_drv_reset(struct usb_hcd *hcd)
160{
161 struct device *dev = hcd->self.controller;
162 int ret;
163
164 ret = ehci_setup(hcd);
165 if (ret)
166 return ret;
167
168 /*
169 * For SoC without hlock, need to program sbuscfg value to guarantee
170 * AHB master's burst would not overrun or underrun FIFO.
171 *
172 * sbuscfg reg has to be set after usb controller reset, otherwise
173 * the value would be override to 0.
174 */
175 if (of_device_is_compatible(dev->of_node, "marvell,armada-3700-ehci"))
176 wrl(USB_SBUSCFG, USB_SBUSCFG_DEF_VAL);
177
178 return ret;
179}
180
181static int __maybe_unused ehci_orion_drv_suspend(struct device *dev)
182{
183 struct usb_hcd *hcd = dev_get_drvdata(dev);
184
185 return ehci_suspend(hcd, device_may_wakeup(dev));
186}
187
188static int __maybe_unused ehci_orion_drv_resume(struct device *dev)
189{
190 struct usb_hcd *hcd = dev_get_drvdata(dev);
191
192 return ehci_resume(hcd, false);
193}
194
195static SIMPLE_DEV_PM_OPS(ehci_orion_pm_ops, ehci_orion_drv_suspend,
196 ehci_orion_drv_resume);
197
198static const struct ehci_driver_overrides orion_overrides __initconst = {
199 .extra_priv_size = sizeof(struct orion_ehci_hcd),
200 .reset = ehci_orion_drv_reset,
201};
202
203static int ehci_orion_drv_probe(struct platform_device *pdev)
204{
205 struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev);
206 const struct mbus_dram_target_info *dram;
207 struct resource *res;
208 struct usb_hcd *hcd;
209 struct ehci_hcd *ehci;
210 void __iomem *regs;
211 int irq, err;
212 enum orion_ehci_phy_ver phy_version;
213 struct orion_ehci_hcd *priv;
214
215 if (usb_disabled())
216 return -ENODEV;
217
218 pr_debug("Initializing Orion-SoC USB Host Controller\n");
219
220 irq = platform_get_irq(pdev, 0);
221 if (irq < 0) {
222 err = irq;
223 goto err;
224 }
225
226 /*
227 * Right now device-tree probed devices don't get dma_mask
228 * set. Since shared usb code relies on it, set it here for
229 * now. Once we have dma capability bindings this can go away.
230 */
231 err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
232 if (err)
233 goto err;
234
235 regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
236 if (IS_ERR(regs)) {
237 err = PTR_ERR(regs);
238 goto err;
239 }
240
241 hcd = usb_create_hcd(&ehci_orion_hc_driver,
242 &pdev->dev, dev_name(&pdev->dev));
243 if (!hcd) {
244 err = -ENOMEM;
245 goto err;
246 }
247
248 hcd->rsrc_start = res->start;
249 hcd->rsrc_len = resource_size(res);
250 hcd->regs = regs;
251
252 ehci = hcd_to_ehci(hcd);
253 ehci->caps = hcd->regs + 0x100;
254 hcd->has_tt = 1;
255
256 priv = hcd_to_orion_priv(hcd);
257 /*
258 * Not all platforms can gate the clock, so it is not an error if
259 * the clock does not exists.
260 */
261 priv->clk = devm_clk_get(&pdev->dev, NULL);
262 if (!IS_ERR(priv->clk)) {
263 err = clk_prepare_enable(priv->clk);
264 if (err)
265 goto err_put_hcd;
266 }
267
268 priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
269 if (IS_ERR(priv->phy)) {
270 err = PTR_ERR(priv->phy);
271 if (err != -ENOSYS)
272 goto err_dis_clk;
273 }
274
275 /*
276 * (Re-)program MBUS remapping windows if we are asked to.
277 */
278 dram = mv_mbus_dram_info();
279 if (dram)
280 ehci_orion_conf_mbus_windows(hcd, dram);
281
282 /*
283 * setup Orion USB controller.
284 */
285 if (pdev->dev.of_node)
286 phy_version = EHCI_PHY_NA;
287 else
288 phy_version = pd->phy_version;
289
290 switch (phy_version) {
291 case EHCI_PHY_NA: /* dont change USB phy settings */
292 break;
293 case EHCI_PHY_ORION:
294 orion_usb_phy_v1_setup(hcd);
295 break;
296 case EHCI_PHY_DD:
297 case EHCI_PHY_KW:
298 default:
299 dev_warn(&pdev->dev, "USB phy version isn't supported.\n");
300 }
301
302 err = usb_add_hcd(hcd, irq, IRQF_SHARED);
303 if (err)
304 goto err_dis_clk;
305
306 device_wakeup_enable(hcd->self.controller);
307 return 0;
308
309err_dis_clk:
310 if (!IS_ERR(priv->clk))
311 clk_disable_unprepare(priv->clk);
312err_put_hcd:
313 usb_put_hcd(hcd);
314err:
315 dev_err(&pdev->dev, "init %s fail, %d\n",
316 dev_name(&pdev->dev), err);
317
318 return err;
319}
320
321static void ehci_orion_drv_remove(struct platform_device *pdev)
322{
323 struct usb_hcd *hcd = platform_get_drvdata(pdev);
324 struct orion_ehci_hcd *priv = hcd_to_orion_priv(hcd);
325
326 usb_remove_hcd(hcd);
327
328 if (!IS_ERR(priv->clk))
329 clk_disable_unprepare(priv->clk);
330
331 usb_put_hcd(hcd);
332}
333
334static const struct of_device_id ehci_orion_dt_ids[] = {
335 { .compatible = "marvell,orion-ehci", },
336 { .compatible = "marvell,armada-3700-ehci", },
337 {},
338};
339MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);
340
341static struct platform_driver ehci_orion_driver = {
342 .probe = ehci_orion_drv_probe,
343 .remove_new = ehci_orion_drv_remove,
344 .shutdown = usb_hcd_platform_shutdown,
345 .driver = {
346 .name = "orion-ehci",
347 .of_match_table = ehci_orion_dt_ids,
348 .pm = &ehci_orion_pm_ops,
349 },
350};
351
352static int __init ehci_orion_init(void)
353{
354 if (usb_disabled())
355 return -ENODEV;
356
357 ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides);
358 return platform_driver_register(&ehci_orion_driver);
359}
360module_init(ehci_orion_init);
361
362static void __exit ehci_orion_cleanup(void)
363{
364 platform_driver_unregister(&ehci_orion_driver);
365}
366module_exit(ehci_orion_cleanup);
367
368MODULE_DESCRIPTION(DRIVER_DESC);
369MODULE_ALIAS("platform:orion-ehci");
370MODULE_AUTHOR("Tzachi Perelstein");
371MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * drivers/usb/host/ehci-orion.c
4 *
5 * Tzachi Perelstein <tzachi@marvell.com>
6 */
7
8#include <linux/kernel.h>
9#include <linux/module.h>
10#include <linux/platform_device.h>
11#include <linux/mbus.h>
12#include <linux/clk.h>
13#include <linux/platform_data/usb-ehci-orion.h>
14#include <linux/of.h>
15#include <linux/phy/phy.h>
16#include <linux/of_device.h>
17#include <linux/of_irq.h>
18#include <linux/usb.h>
19#include <linux/usb/hcd.h>
20#include <linux/io.h>
21#include <linux/dma-mapping.h>
22
23#include "ehci.h"
24
25#define rdl(off) readl_relaxed(hcd->regs + (off))
26#define wrl(off, val) writel_relaxed((val), hcd->regs + (off))
27
28#define USB_CMD 0x140
29#define USB_CMD_RUN BIT(0)
30#define USB_CMD_RESET BIT(1)
31#define USB_MODE 0x1a8
32#define USB_MODE_MASK GENMASK(1, 0)
33#define USB_MODE_DEVICE 0x2
34#define USB_MODE_HOST 0x3
35#define USB_MODE_SDIS BIT(4)
36#define USB_CAUSE 0x310
37#define USB_MASK 0x314
38#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
39#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
40#define USB_IPG 0x360
41#define USB_PHY_PWR_CTRL 0x400
42#define USB_PHY_TX_CTRL 0x420
43#define USB_PHY_RX_CTRL 0x430
44#define USB_PHY_IVREF_CTRL 0x440
45#define USB_PHY_TST_GRP_CTRL 0x450
46
47#define USB_SBUSCFG 0x90
48
49/* BAWR = BARD = 3 : Align read/write bursts packets larger than 128 bytes */
50#define USB_SBUSCFG_BAWR_ALIGN_128B (0x3 << 6)
51#define USB_SBUSCFG_BARD_ALIGN_128B (0x3 << 3)
52/* AHBBRST = 3 : Align AHB Burst to INCR16 (64 bytes) */
53#define USB_SBUSCFG_AHBBRST_INCR16 (0x3 << 0)
54
55#define USB_SBUSCFG_DEF_VAL (USB_SBUSCFG_BAWR_ALIGN_128B \
56 | USB_SBUSCFG_BARD_ALIGN_128B \
57 | USB_SBUSCFG_AHBBRST_INCR16)
58
59#define DRIVER_DESC "EHCI orion driver"
60
61#define hcd_to_orion_priv(h) ((struct orion_ehci_hcd *)hcd_to_ehci(h)->priv)
62
63struct orion_ehci_hcd {
64 struct clk *clk;
65 struct phy *phy;
66};
67
68static const char hcd_name[] = "ehci-orion";
69
70static struct hc_driver __read_mostly ehci_orion_hc_driver;
71
72/*
73 * Implement Orion USB controller specification guidelines
74 */
75static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
76{
77 /* The below GLs are according to the Orion Errata document */
78 /*
79 * Clear interrupt cause and mask
80 */
81 wrl(USB_CAUSE, 0);
82 wrl(USB_MASK, 0);
83
84 /*
85 * Reset controller
86 */
87 wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
88 while (rdl(USB_CMD) & USB_CMD_RESET);
89
90 /*
91 * GL# USB-10: Set IPG for non start of frame packets
92 * Bits[14:8]=0xc
93 */
94 wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);
95
96 /*
97 * GL# USB-9: USB 2.0 Power Control
98 * BG_VSEL[7:6]=0x1
99 */
100 wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40);
101
102 /*
103 * GL# USB-1: USB PHY Tx Control - force calibration to '8'
104 * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
105 */
106 wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040);
107
108 /*
109 * GL# USB-3 GL# USB-9: USB PHY Rx Control
110 * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
111 * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
112 */
113 wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010);
114
115 /*
116 * GL# USB-3 GL# USB-9: USB PHY IVREF Control
117 * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
118 */
119 wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32);
120
121 /*
122 * GL# USB-3 GL# USB-9: USB PHY Test Group Control
123 * REG_FIFO_SQ_RST[15]=0
124 */
125 wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
126
127 /*
128 * Stop and reset controller
129 */
130 wrl(USB_CMD, rdl(USB_CMD) & ~USB_CMD_RUN);
131 wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
132 while (rdl(USB_CMD) & USB_CMD_RESET);
133
134 /*
135 * GL# USB-5 Streaming disable REG_USB_MODE[4]=1
136 * TBD: This need to be done after each reset!
137 * GL# USB-4 Setup USB Host mode
138 */
139 wrl(USB_MODE, USB_MODE_SDIS | USB_MODE_HOST);
140}
141
142static void
143ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
144 const struct mbus_dram_target_info *dram)
145{
146 int i;
147
148 for (i = 0; i < 4; i++) {
149 wrl(USB_WINDOW_CTRL(i), 0);
150 wrl(USB_WINDOW_BASE(i), 0);
151 }
152
153 for (i = 0; i < dram->num_cs; i++) {
154 const struct mbus_dram_window *cs = dram->cs + i;
155
156 wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) |
157 (cs->mbus_attr << 8) |
158 (dram->mbus_dram_target_id << 4) | 1);
159 wrl(USB_WINDOW_BASE(i), cs->base);
160 }
161}
162
163static int ehci_orion_drv_reset(struct usb_hcd *hcd)
164{
165 struct device *dev = hcd->self.controller;
166 int ret;
167
168 ret = ehci_setup(hcd);
169 if (ret)
170 return ret;
171
172 /*
173 * For SoC without hlock, need to program sbuscfg value to guarantee
174 * AHB master's burst would not overrun or underrun FIFO.
175 *
176 * sbuscfg reg has to be set after usb controller reset, otherwise
177 * the value would be override to 0.
178 */
179 if (of_device_is_compatible(dev->of_node, "marvell,armada-3700-ehci"))
180 wrl(USB_SBUSCFG, USB_SBUSCFG_DEF_VAL);
181
182 return ret;
183}
184
185static int __maybe_unused ehci_orion_drv_suspend(struct device *dev)
186{
187 struct usb_hcd *hcd = dev_get_drvdata(dev);
188
189 return ehci_suspend(hcd, device_may_wakeup(dev));
190}
191
192static int __maybe_unused ehci_orion_drv_resume(struct device *dev)
193{
194 struct usb_hcd *hcd = dev_get_drvdata(dev);
195
196 return ehci_resume(hcd, false);
197}
198
199static SIMPLE_DEV_PM_OPS(ehci_orion_pm_ops, ehci_orion_drv_suspend,
200 ehci_orion_drv_resume);
201
202static const struct ehci_driver_overrides orion_overrides __initconst = {
203 .extra_priv_size = sizeof(struct orion_ehci_hcd),
204 .reset = ehci_orion_drv_reset,
205};
206
207static int ehci_orion_drv_probe(struct platform_device *pdev)
208{
209 struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev);
210 const struct mbus_dram_target_info *dram;
211 struct resource *res;
212 struct usb_hcd *hcd;
213 struct ehci_hcd *ehci;
214 void __iomem *regs;
215 int irq, err;
216 enum orion_ehci_phy_ver phy_version;
217 struct orion_ehci_hcd *priv;
218
219 if (usb_disabled())
220 return -ENODEV;
221
222 pr_debug("Initializing Orion-SoC USB Host Controller\n");
223
224 irq = platform_get_irq(pdev, 0);
225 if (irq <= 0) {
226 err = -ENODEV;
227 goto err;
228 }
229
230 /*
231 * Right now device-tree probed devices don't get dma_mask
232 * set. Since shared usb code relies on it, set it here for
233 * now. Once we have dma capability bindings this can go away.
234 */
235 err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
236 if (err)
237 goto err;
238
239 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
240 regs = devm_ioremap_resource(&pdev->dev, res);
241 if (IS_ERR(regs)) {
242 err = PTR_ERR(regs);
243 goto err;
244 }
245
246 hcd = usb_create_hcd(&ehci_orion_hc_driver,
247 &pdev->dev, dev_name(&pdev->dev));
248 if (!hcd) {
249 err = -ENOMEM;
250 goto err;
251 }
252
253 hcd->rsrc_start = res->start;
254 hcd->rsrc_len = resource_size(res);
255 hcd->regs = regs;
256
257 ehci = hcd_to_ehci(hcd);
258 ehci->caps = hcd->regs + 0x100;
259 hcd->has_tt = 1;
260
261 priv = hcd_to_orion_priv(hcd);
262 /*
263 * Not all platforms can gate the clock, so it is not an error if
264 * the clock does not exists.
265 */
266 priv->clk = devm_clk_get(&pdev->dev, NULL);
267 if (!IS_ERR(priv->clk))
268 clk_prepare_enable(priv->clk);
269
270 priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
271 if (IS_ERR(priv->phy)) {
272 err = PTR_ERR(priv->phy);
273 if (err != -ENOSYS)
274 goto err_dis_clk;
275 }
276
277 /*
278 * (Re-)program MBUS remapping windows if we are asked to.
279 */
280 dram = mv_mbus_dram_info();
281 if (dram)
282 ehci_orion_conf_mbus_windows(hcd, dram);
283
284 /*
285 * setup Orion USB controller.
286 */
287 if (pdev->dev.of_node)
288 phy_version = EHCI_PHY_NA;
289 else
290 phy_version = pd->phy_version;
291
292 switch (phy_version) {
293 case EHCI_PHY_NA: /* dont change USB phy settings */
294 break;
295 case EHCI_PHY_ORION:
296 orion_usb_phy_v1_setup(hcd);
297 break;
298 case EHCI_PHY_DD:
299 case EHCI_PHY_KW:
300 default:
301 dev_warn(&pdev->dev, "USB phy version isn't supported.\n");
302 }
303
304 err = usb_add_hcd(hcd, irq, IRQF_SHARED);
305 if (err)
306 goto err_dis_clk;
307
308 device_wakeup_enable(hcd->self.controller);
309 return 0;
310
311err_dis_clk:
312 if (!IS_ERR(priv->clk))
313 clk_disable_unprepare(priv->clk);
314 usb_put_hcd(hcd);
315err:
316 dev_err(&pdev->dev, "init %s fail, %d\n",
317 dev_name(&pdev->dev), err);
318
319 return err;
320}
321
322static int ehci_orion_drv_remove(struct platform_device *pdev)
323{
324 struct usb_hcd *hcd = platform_get_drvdata(pdev);
325 struct orion_ehci_hcd *priv = hcd_to_orion_priv(hcd);
326
327 usb_remove_hcd(hcd);
328
329 if (!IS_ERR(priv->clk))
330 clk_disable_unprepare(priv->clk);
331
332 usb_put_hcd(hcd);
333
334 return 0;
335}
336
337static const struct of_device_id ehci_orion_dt_ids[] = {
338 { .compatible = "marvell,orion-ehci", },
339 { .compatible = "marvell,armada-3700-ehci", },
340 {},
341};
342MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);
343
344static struct platform_driver ehci_orion_driver = {
345 .probe = ehci_orion_drv_probe,
346 .remove = ehci_orion_drv_remove,
347 .shutdown = usb_hcd_platform_shutdown,
348 .driver = {
349 .name = "orion-ehci",
350 .of_match_table = ehci_orion_dt_ids,
351 .pm = &ehci_orion_pm_ops,
352 },
353};
354
355static int __init ehci_orion_init(void)
356{
357 if (usb_disabled())
358 return -ENODEV;
359
360 pr_info("%s: " DRIVER_DESC "\n", hcd_name);
361
362 ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides);
363 return platform_driver_register(&ehci_orion_driver);
364}
365module_init(ehci_orion_init);
366
367static void __exit ehci_orion_cleanup(void)
368{
369 platform_driver_unregister(&ehci_orion_driver);
370}
371module_exit(ehci_orion_cleanup);
372
373MODULE_DESCRIPTION(DRIVER_DESC);
374MODULE_ALIAS("platform:orion-ehci");
375MODULE_AUTHOR("Tzachi Perelstein");
376MODULE_LICENSE("GPL v2");