Merge branch 'spectre' of git://git.armlinux.org.uk/~rmk/linux-arm
[linux-2.6-block.git] / arch / arm / mach-mmp / devices.c
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49cbe786
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1/*
2 * linux/arch/arm/mach-mmp/devices.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#include <linux/init.h>
10#include <linux/platform_device.h>
11#include <linux/dma-mapping.h>
75b1bdf5 12#include <linux/delay.h>
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13
14#include <asm/irq.h>
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15#include "irqs.h"
16#include "devices.h"
17#include "cputype.h"
18#include "regs-usb.h"
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19
20int __init pxa_register_device(struct pxa_device_desc *desc,
21 void *data, size_t size)
22{
23 struct platform_device *pdev;
24 struct resource res[2 + MAX_RESOURCE_DMA];
25 int i, ret = 0, nres = 0;
26
27 pdev = platform_device_alloc(desc->drv_name, desc->id);
28 if (pdev == NULL)
29 return -ENOMEM;
30
31 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
32
33 memset(res, 0, sizeof(res));
34
35 if (desc->start != -1ul && desc->size > 0) {
36 res[nres].start = desc->start;
37 res[nres].end = desc->start + desc->size - 1;
38 res[nres].flags = IORESOURCE_MEM;
39 nres++;
40 }
41
42 if (desc->irq != NO_IRQ) {
43 res[nres].start = desc->irq;
44 res[nres].end = desc->irq;
45 res[nres].flags = IORESOURCE_IRQ;
46 nres++;
47 }
48
49 for (i = 0; i < MAX_RESOURCE_DMA; i++, nres++) {
50 if (desc->dma[i] == 0)
51 break;
52
53 res[nres].start = desc->dma[i];
54 res[nres].end = desc->dma[i];
55 res[nres].flags = IORESOURCE_DMA;
56 }
57
58 ret = platform_device_add_resources(pdev, res, nres);
59 if (ret) {
60 platform_device_put(pdev);
61 return ret;
62 }
63
64 if (data && size) {
65 ret = platform_device_add_data(pdev, data, size);
66 if (ret) {
67 platform_device_put(pdev);
68 return ret;
69 }
70 }
71
72 return platform_device_add(pdev);
73}
75b1bdf5 74
35240808 75#if IS_ENABLED(CONFIG_USB) || IS_ENABLED(CONFIG_USB_GADGET)
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76#if IS_ENABLED(CONFIG_USB_MV_UDC) || IS_ENABLED(CONFIG_USB_EHCI_MV)
77#if IS_ENABLED(CONFIG_CPU_PXA910) || IS_ENABLED(CONFIG_CPU_PXA168)
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78
79/*****************************************************************************
80 * The registers read/write routines
81 *****************************************************************************/
82
83static unsigned int u2o_get(void __iomem *base, unsigned int offset)
84{
85 return readl_relaxed(base + offset);
86}
87
88static void u2o_set(void __iomem *base, unsigned int offset,
89 unsigned int value)
90{
91 u32 reg;
92
93 reg = readl_relaxed(base + offset);
94 reg |= value;
95 writel_relaxed(reg, base + offset);
96 readl_relaxed(base + offset);
97}
98
99static void u2o_clear(void __iomem *base, unsigned int offset,
100 unsigned int value)
101{
102 u32 reg;
103
104 reg = readl_relaxed(base + offset);
105 reg &= ~value;
106 writel_relaxed(reg, base + offset);
107 readl_relaxed(base + offset);
108}
109
110static void u2o_write(void __iomem *base, unsigned int offset,
111 unsigned int value)
112{
113 writel_relaxed(value, base + offset);
114 readl_relaxed(base + offset);
115}
116
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117
118static DEFINE_MUTEX(phy_lock);
119static int phy_init_cnt;
120
121static int usb_phy_init_internal(void __iomem *base)
122{
123 int loops;
124
125 pr_info("Init usb phy!!!\n");
126
127 /* Initialize the USB PHY power */
128 if (cpu_is_pxa910()) {
129 u2o_set(base, UTMI_CTRL, (1<<UTMI_CTRL_INPKT_DELAY_SOF_SHIFT)
130 | (1<<UTMI_CTRL_PU_REF_SHIFT));
131 }
132
133 u2o_set(base, UTMI_CTRL, 1<<UTMI_CTRL_PLL_PWR_UP_SHIFT);
134 u2o_set(base, UTMI_CTRL, 1<<UTMI_CTRL_PWR_UP_SHIFT);
135
136 /* UTMI_PLL settings */
137 u2o_clear(base, UTMI_PLL, UTMI_PLL_PLLVDD18_MASK
138 | UTMI_PLL_PLLVDD12_MASK | UTMI_PLL_PLLCALI12_MASK
139 | UTMI_PLL_FBDIV_MASK | UTMI_PLL_REFDIV_MASK
140 | UTMI_PLL_ICP_MASK | UTMI_PLL_KVCO_MASK);
141
142 u2o_set(base, UTMI_PLL, 0xee<<UTMI_PLL_FBDIV_SHIFT
143 | 0xb<<UTMI_PLL_REFDIV_SHIFT | 3<<UTMI_PLL_PLLVDD18_SHIFT
144 | 3<<UTMI_PLL_PLLVDD12_SHIFT | 3<<UTMI_PLL_PLLCALI12_SHIFT
145 | 1<<UTMI_PLL_ICP_SHIFT | 3<<UTMI_PLL_KVCO_SHIFT);
146
147 /* UTMI_TX */
148 u2o_clear(base, UTMI_TX, UTMI_TX_REG_EXT_FS_RCAL_EN_MASK
149 | UTMI_TX_TXVDD12_MASK | UTMI_TX_CK60_PHSEL_MASK
150 | UTMI_TX_IMPCAL_VTH_MASK | UTMI_TX_REG_EXT_FS_RCAL_MASK
151 | UTMI_TX_AMP_MASK);
152 u2o_set(base, UTMI_TX, 3<<UTMI_TX_TXVDD12_SHIFT
153 | 4<<UTMI_TX_CK60_PHSEL_SHIFT | 4<<UTMI_TX_IMPCAL_VTH_SHIFT
154 | 8<<UTMI_TX_REG_EXT_FS_RCAL_SHIFT | 3<<UTMI_TX_AMP_SHIFT);
155
156 /* UTMI_RX */
157 u2o_clear(base, UTMI_RX, UTMI_RX_SQ_THRESH_MASK
158 | UTMI_REG_SQ_LENGTH_MASK);
159 u2o_set(base, UTMI_RX, 7<<UTMI_RX_SQ_THRESH_SHIFT
160 | 2<<UTMI_REG_SQ_LENGTH_SHIFT);
161
162 /* UTMI_IVREF */
163 if (cpu_is_pxa168())
164 /* fixing Microsoft Altair board interface with NEC hub issue -
165 * Set UTMI_IVREF from 0x4a3 to 0x4bf */
166 u2o_write(base, UTMI_IVREF, 0x4bf);
167
168 /* toggle VCOCAL_START bit of UTMI_PLL */
169 udelay(200);
170 u2o_set(base, UTMI_PLL, VCOCAL_START);
171 udelay(40);
172 u2o_clear(base, UTMI_PLL, VCOCAL_START);
173
174 /* toggle REG_RCAL_START bit of UTMI_TX */
175 udelay(400);
176 u2o_set(base, UTMI_TX, REG_RCAL_START);
177 udelay(40);
178 u2o_clear(base, UTMI_TX, REG_RCAL_START);
179 udelay(400);
180
181 /* Make sure PHY PLL is ready */
182 loops = 0;
183 while ((u2o_get(base, UTMI_PLL) & PLL_READY) == 0) {
184 mdelay(1);
185 loops++;
186 if (loops > 100) {
187 printk(KERN_WARNING "calibrate timeout, UTMI_PLL %x\n",
188 u2o_get(base, UTMI_PLL));
189 break;
190 }
191 }
192
193 if (cpu_is_pxa168()) {
194 u2o_set(base, UTMI_RESERVE, 1 << 5);
195 /* Turn on UTMI PHY OTG extension */
196 u2o_write(base, UTMI_OTG_ADDON, 1);
197 }
198
199 return 0;
200}
201
202static int usb_phy_deinit_internal(void __iomem *base)
203{
204 pr_info("Deinit usb phy!!!\n");
205
206 if (cpu_is_pxa168())
207 u2o_clear(base, UTMI_OTG_ADDON, UTMI_OTG_ADDON_OTG_ON);
208
209 u2o_clear(base, UTMI_CTRL, UTMI_CTRL_RXBUF_PDWN);
210 u2o_clear(base, UTMI_CTRL, UTMI_CTRL_TXBUF_PDWN);
211 u2o_clear(base, UTMI_CTRL, UTMI_CTRL_USB_CLK_EN);
212 u2o_clear(base, UTMI_CTRL, 1<<UTMI_CTRL_PWR_UP_SHIFT);
213 u2o_clear(base, UTMI_CTRL, 1<<UTMI_CTRL_PLL_PWR_UP_SHIFT);
214
215 return 0;
216}
217
218int pxa_usb_phy_init(void __iomem *phy_reg)
219{
220 mutex_lock(&phy_lock);
221 if (phy_init_cnt++ == 0)
222 usb_phy_init_internal(phy_reg);
223 mutex_unlock(&phy_lock);
224 return 0;
225}
226
227void pxa_usb_phy_deinit(void __iomem *phy_reg)
228{
229 WARN_ON(phy_init_cnt == 0);
230
231 mutex_lock(&phy_lock);
232 if (--phy_init_cnt == 0)
233 usb_phy_deinit_internal(phy_reg);
234 mutex_unlock(&phy_lock);
235}
236#endif
237#endif
238#endif
239
35240808 240#if IS_ENABLED(CONFIG_USB_SUPPORT)
1c1953f3 241static u64 __maybe_unused usb_dma_mask = ~(u32)0;
75b1bdf5 242
35240808 243#if IS_ENABLED(CONFIG_USB_MV_UDC)
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244struct resource pxa168_u2o_resources[] = {
245 /* regbase */
246 [0] = {
247 .start = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET,
248 .end = PXA168_U2O_REGBASE + USB_REG_RANGE,
249 .flags = IORESOURCE_MEM,
250 .name = "capregs",
251 },
252 /* phybase */
253 [1] = {
254 .start = PXA168_U2O_PHYBASE,
255 .end = PXA168_U2O_PHYBASE + USB_PHY_RANGE,
256 .flags = IORESOURCE_MEM,
257 .name = "phyregs",
258 },
259 [2] = {
260 .start = IRQ_PXA168_USB1,
261 .end = IRQ_PXA168_USB1,
262 .flags = IORESOURCE_IRQ,
263 },
264};
265
266struct platform_device pxa168_device_u2o = {
267 .name = "mv-udc",
268 .id = -1,
269 .resource = pxa168_u2o_resources,
270 .num_resources = ARRAY_SIZE(pxa168_u2o_resources),
271 .dev = {
272 .dma_mask = &usb_dma_mask,
273 .coherent_dma_mask = 0xffffffff,
274 }
275};
276#endif /* CONFIG_USB_MV_UDC */
277
35240808 278#if IS_ENABLED(CONFIG_USB_EHCI_MV_U2O)
75b1bdf5 279struct resource pxa168_u2oehci_resources[] = {
75b1bdf5 280 [0] = {
a740f20d 281 .start = PXA168_U2O_REGBASE,
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282 .end = PXA168_U2O_REGBASE + USB_REG_RANGE,
283 .flags = IORESOURCE_MEM,
75b1bdf5 284 },
75b1bdf5 285 [1] = {
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286 .start = IRQ_PXA168_USB1,
287 .end = IRQ_PXA168_USB1,
288 .flags = IORESOURCE_IRQ,
289 },
290};
291
292struct platform_device pxa168_device_u2oehci = {
293 .name = "pxa-u2oehci",
294 .id = -1,
295 .dev = {
296 .dma_mask = &usb_dma_mask,
297 .coherent_dma_mask = 0xffffffff,
298 },
299
300 .num_resources = ARRAY_SIZE(pxa168_u2oehci_resources),
301 .resource = pxa168_u2oehci_resources,
302};
303#endif
304
35240808 305#if IS_ENABLED(CONFIG_USB_MV_OTG)
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306struct resource pxa168_u2ootg_resources[] = {
307 /* regbase */
308 [0] = {
309 .start = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET,
310 .end = PXA168_U2O_REGBASE + USB_REG_RANGE,
311 .flags = IORESOURCE_MEM,
312 .name = "capregs",
313 },
314 /* phybase */
315 [1] = {
316 .start = PXA168_U2O_PHYBASE,
317 .end = PXA168_U2O_PHYBASE + USB_PHY_RANGE,
318 .flags = IORESOURCE_MEM,
319 .name = "phyregs",
320 },
321 [2] = {
322 .start = IRQ_PXA168_USB1,
323 .end = IRQ_PXA168_USB1,
324 .flags = IORESOURCE_IRQ,
325 },
326};
327
328struct platform_device pxa168_device_u2ootg = {
329 .name = "mv-otg",
330 .id = -1,
331 .dev = {
332 .dma_mask = &usb_dma_mask,
333 .coherent_dma_mask = 0xffffffff,
334 },
335
336 .num_resources = ARRAY_SIZE(pxa168_u2ootg_resources),
337 .resource = pxa168_u2ootg_resources,
338};
339#endif /* CONFIG_USB_MV_OTG */
340
341#endif