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Linux/arch/arm/mach-mmp/devices.c

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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>
 12 #include <linux/delay.h>
 13 
 14 #include <asm/irq.h>
 15 #include <mach/irqs.h>
 16 #include <mach/devices.h>
 17 #include <mach/cputype.h>
 18 #include <mach/regs-usb.h>
 19 
 20 int __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 }
 74 
 75 #if defined(CONFIG_USB) || defined(CONFIG_USB_GADGET)
 76 
 77 /*****************************************************************************
 78  * The registers read/write routines
 79  *****************************************************************************/
 80 
 81 static unsigned int u2o_get(void __iomem *base, unsigned int offset)
 82 {
 83         return readl_relaxed(base + offset);
 84 }
 85 
 86 static void u2o_set(void __iomem *base, unsigned int offset,
 87                 unsigned int value)
 88 {
 89         u32 reg;
 90 
 91         reg = readl_relaxed(base + offset);
 92         reg |= value;
 93         writel_relaxed(reg, base + offset);
 94         readl_relaxed(base + offset);
 95 }
 96 
 97 static void u2o_clear(void __iomem *base, unsigned int offset,
 98                 unsigned int value)
 99 {
100         u32 reg;
101 
102         reg = readl_relaxed(base + offset);
103         reg &= ~value;
104         writel_relaxed(reg, base + offset);
105         readl_relaxed(base + offset);
106 }
107 
108 static void u2o_write(void __iomem *base, unsigned int offset,
109                 unsigned int value)
110 {
111         writel_relaxed(value, base + offset);
112         readl_relaxed(base + offset);
113 }
114 
115 #if defined(CONFIG_USB_MV_UDC) || defined(CONFIG_USB_EHCI_MV)
116 
117 #if defined(CONFIG_CPU_PXA910) || defined(CONFIG_CPU_PXA168)
118 
119 static DEFINE_MUTEX(phy_lock);
120 static int phy_init_cnt;
121 
122 static int usb_phy_init_internal(void __iomem *base)
123 {
124         int loops;
125 
126         pr_info("Init usb phy!!!\n");
127 
128         /* Initialize the USB PHY power */
129         if (cpu_is_pxa910()) {
130                 u2o_set(base, UTMI_CTRL, (1<<UTMI_CTRL_INPKT_DELAY_SOF_SHIFT)
131                         | (1<<UTMI_CTRL_PU_REF_SHIFT));
132         }
133 
134         u2o_set(base, UTMI_CTRL, 1<<UTMI_CTRL_PLL_PWR_UP_SHIFT);
135         u2o_set(base, UTMI_CTRL, 1<<UTMI_CTRL_PWR_UP_SHIFT);
136 
137         /* UTMI_PLL settings */
138         u2o_clear(base, UTMI_PLL, UTMI_PLL_PLLVDD18_MASK
139                 | UTMI_PLL_PLLVDD12_MASK | UTMI_PLL_PLLCALI12_MASK
140                 | UTMI_PLL_FBDIV_MASK | UTMI_PLL_REFDIV_MASK
141                 | UTMI_PLL_ICP_MASK | UTMI_PLL_KVCO_MASK);
142 
143         u2o_set(base, UTMI_PLL, 0xee<<UTMI_PLL_FBDIV_SHIFT
144                 | 0xb<<UTMI_PLL_REFDIV_SHIFT | 3<<UTMI_PLL_PLLVDD18_SHIFT
145                 | 3<<UTMI_PLL_PLLVDD12_SHIFT | 3<<UTMI_PLL_PLLCALI12_SHIFT
146                 | 1<<UTMI_PLL_ICP_SHIFT | 3<<UTMI_PLL_KVCO_SHIFT);
147 
148         /* UTMI_TX */
149         u2o_clear(base, UTMI_TX, UTMI_TX_REG_EXT_FS_RCAL_EN_MASK
150                 | UTMI_TX_TXVDD12_MASK | UTMI_TX_CK60_PHSEL_MASK
151                 | UTMI_TX_IMPCAL_VTH_MASK | UTMI_TX_REG_EXT_FS_RCAL_MASK
152                 | UTMI_TX_AMP_MASK);
153         u2o_set(base, UTMI_TX, 3<<UTMI_TX_TXVDD12_SHIFT
154                 | 4<<UTMI_TX_CK60_PHSEL_SHIFT | 4<<UTMI_TX_IMPCAL_VTH_SHIFT
155                 | 8<<UTMI_TX_REG_EXT_FS_RCAL_SHIFT | 3<<UTMI_TX_AMP_SHIFT);
156 
157         /* UTMI_RX */
158         u2o_clear(base, UTMI_RX, UTMI_RX_SQ_THRESH_MASK
159                 | UTMI_REG_SQ_LENGTH_MASK);
160         u2o_set(base, UTMI_RX, 7<<UTMI_RX_SQ_THRESH_SHIFT
161                 | 2<<UTMI_REG_SQ_LENGTH_SHIFT);
162 
163         /* UTMI_IVREF */
164         if (cpu_is_pxa168())
165                 /* fixing Microsoft Altair board interface with NEC hub issue -
166                  * Set UTMI_IVREF from 0x4a3 to 0x4bf */
167                 u2o_write(base, UTMI_IVREF, 0x4bf);
168 
169         /* toggle VCOCAL_START bit of UTMI_PLL */
170         udelay(200);
171         u2o_set(base, UTMI_PLL, VCOCAL_START);
172         udelay(40);
173         u2o_clear(base, UTMI_PLL, VCOCAL_START);
174 
175         /* toggle REG_RCAL_START bit of UTMI_TX */
176         udelay(400);
177         u2o_set(base, UTMI_TX, REG_RCAL_START);
178         udelay(40);
179         u2o_clear(base, UTMI_TX, REG_RCAL_START);
180         udelay(400);
181 
182         /* Make sure PHY PLL is ready */
183         loops = 0;
184         while ((u2o_get(base, UTMI_PLL) & PLL_READY) == 0) {
185                 mdelay(1);
186                 loops++;
187                 if (loops > 100) {
188                         printk(KERN_WARNING "calibrate timeout, UTMI_PLL %x\n",
189                                 u2o_get(base, UTMI_PLL));
190                         break;
191                 }
192         }
193 
194         if (cpu_is_pxa168()) {
195                 u2o_set(base, UTMI_RESERVE, 1 << 5);
196                 /* Turn on UTMI PHY OTG extension */
197                 u2o_write(base, UTMI_OTG_ADDON, 1);
198         }
199 
200         return 0;
201 }
202 
203 static int usb_phy_deinit_internal(void __iomem *base)
204 {
205         pr_info("Deinit usb phy!!!\n");
206 
207         if (cpu_is_pxa168())
208                 u2o_clear(base, UTMI_OTG_ADDON, UTMI_OTG_ADDON_OTG_ON);
209 
210         u2o_clear(base, UTMI_CTRL, UTMI_CTRL_RXBUF_PDWN);
211         u2o_clear(base, UTMI_CTRL, UTMI_CTRL_TXBUF_PDWN);
212         u2o_clear(base, UTMI_CTRL, UTMI_CTRL_USB_CLK_EN);
213         u2o_clear(base, UTMI_CTRL, 1<<UTMI_CTRL_PWR_UP_SHIFT);
214         u2o_clear(base, UTMI_CTRL, 1<<UTMI_CTRL_PLL_PWR_UP_SHIFT);
215 
216         return 0;
217 }
218 
219 int pxa_usb_phy_init(void __iomem *phy_reg)
220 {
221         mutex_lock(&phy_lock);
222         if (phy_init_cnt++ == 0)
223                 usb_phy_init_internal(phy_reg);
224         mutex_unlock(&phy_lock);
225         return 0;
226 }
227 
228 void pxa_usb_phy_deinit(void __iomem *phy_reg)
229 {
230         WARN_ON(phy_init_cnt == 0);
231 
232         mutex_lock(&phy_lock);
233         if (--phy_init_cnt == 0)
234                 usb_phy_deinit_internal(phy_reg);
235         mutex_unlock(&phy_lock);
236 }
237 #endif
238 #endif
239 #endif
240 
241 #ifdef CONFIG_USB_SUPPORT
242 static u64 usb_dma_mask = ~(u32)0;
243 
244 #ifdef CONFIG_USB_MV_UDC
245 struct resource pxa168_u2o_resources[] = {
246         /* regbase */
247         [0] = {
248                 .start  = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET,
249                 .end    = PXA168_U2O_REGBASE + USB_REG_RANGE,
250                 .flags  = IORESOURCE_MEM,
251                 .name   = "capregs",
252         },
253         /* phybase */
254         [1] = {
255                 .start  = PXA168_U2O_PHYBASE,
256                 .end    = PXA168_U2O_PHYBASE + USB_PHY_RANGE,
257                 .flags  = IORESOURCE_MEM,
258                 .name   = "phyregs",
259         },
260         [2] = {
261                 .start  = IRQ_PXA168_USB1,
262                 .end    = IRQ_PXA168_USB1,
263                 .flags  = IORESOURCE_IRQ,
264         },
265 };
266 
267 struct platform_device pxa168_device_u2o = {
268         .name           = "mv-udc",
269         .id             = -1,
270         .resource       = pxa168_u2o_resources,
271         .num_resources  = ARRAY_SIZE(pxa168_u2o_resources),
272         .dev            =  {
273                 .dma_mask       = &usb_dma_mask,
274                 .coherent_dma_mask = 0xffffffff,
275         }
276 };
277 #endif /* CONFIG_USB_MV_UDC */
278 
279 #ifdef CONFIG_USB_EHCI_MV_U2O
280 struct resource pxa168_u2oehci_resources[] = {
281         /* regbase */
282         [0] = {
283                 .start  = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET,
284                 .end    = PXA168_U2O_REGBASE + USB_REG_RANGE,
285                 .flags  = IORESOURCE_MEM,
286                 .name   = "capregs",
287         },
288         /* phybase */
289         [1] = {
290                 .start  = PXA168_U2O_PHYBASE,
291                 .end    = PXA168_U2O_PHYBASE + USB_PHY_RANGE,
292                 .flags  = IORESOURCE_MEM,
293                 .name   = "phyregs",
294         },
295         [2] = {
296                 .start  = IRQ_PXA168_USB1,
297                 .end    = IRQ_PXA168_USB1,
298                 .flags  = IORESOURCE_IRQ,
299         },
300 };
301 
302 struct platform_device pxa168_device_u2oehci = {
303         .name           = "pxa-u2oehci",
304         .id             = -1,
305         .dev            = {
306                 .dma_mask               = &usb_dma_mask,
307                 .coherent_dma_mask      = 0xffffffff,
308         },
309 
310         .num_resources  = ARRAY_SIZE(pxa168_u2oehci_resources),
311         .resource       = pxa168_u2oehci_resources,
312 };
313 #endif
314 
315 #if defined(CONFIG_USB_MV_OTG)
316 struct resource pxa168_u2ootg_resources[] = {
317         /* regbase */
318         [0] = {
319                 .start  = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET,
320                 .end    = PXA168_U2O_REGBASE + USB_REG_RANGE,
321                 .flags  = IORESOURCE_MEM,
322                 .name   = "capregs",
323         },
324         /* phybase */
325         [1] = {
326                 .start  = PXA168_U2O_PHYBASE,
327                 .end    = PXA168_U2O_PHYBASE + USB_PHY_RANGE,
328                 .flags  = IORESOURCE_MEM,
329                 .name   = "phyregs",
330         },
331         [2] = {
332                 .start  = IRQ_PXA168_USB1,
333                 .end    = IRQ_PXA168_USB1,
334                 .flags  = IORESOURCE_IRQ,
335         },
336 };
337 
338 struct platform_device pxa168_device_u2ootg = {
339         .name           = "mv-otg",
340         .id             = -1,
341         .dev  = {
342                 .dma_mask          = &usb_dma_mask,
343                 .coherent_dma_mask = 0xffffffff,
344         },
345 
346         .num_resources  = ARRAY_SIZE(pxa168_u2ootg_resources),
347         .resource      = pxa168_u2ootg_resources,
348 };
349 #endif /* CONFIG_USB_MV_OTG */
350 
351 #endif
352 

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