Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1 | /** |
| 2 | * dwc3-omap.c - OMAP Specific Glue layer |
| 3 | * |
| 4 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 5 | * |
| 6 | * Authors: Felipe Balbi <balbi@ti.com>, |
| 7 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions, and the following disclaimer, |
| 14 | * without modification. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * 3. The names of the above-listed copyright holders may not be used |
| 19 | * to endorse or promote products derived from this software without |
| 20 | * specific prior written permission. |
| 21 | * |
| 22 | * ALTERNATIVELY, this software may be distributed under the terms of the |
| 23 | * GNU General Public License ("GPL") version 2, as published by the Free |
| 24 | * Software Foundation. |
| 25 | * |
| 26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 27 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 28 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 29 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 30 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 31 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 32 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 33 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 36 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 37 | */ |
| 38 | |
Felipe Balbi | a72e658 | 2011-09-05 13:37:28 +0300 | [diff] [blame] | 39 | #include <linux/module.h> |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 40 | #include <linux/kernel.h> |
| 41 | #include <linux/slab.h> |
| 42 | #include <linux/interrupt.h> |
| 43 | #include <linux/spinlock.h> |
| 44 | #include <linux/platform_device.h> |
Felipe Balbi | 9962444 | 2011-09-01 22:26:25 +0300 | [diff] [blame] | 45 | #include <linux/platform_data/dwc3-omap.h> |
Kishon Vijay Abraham I | 7e41bba | 2013-01-25 08:30:49 +0530 | [diff] [blame] | 46 | #include <linux/usb/dwc3-omap.h> |
Kishon Vijay Abraham I | af310e9 | 2013-01-25 08:30:47 +0530 | [diff] [blame] | 47 | #include <linux/pm_runtime.h> |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 48 | #include <linux/dma-mapping.h> |
| 49 | #include <linux/ioport.h> |
| 50 | #include <linux/io.h> |
Felipe Balbi | 45b3cd4a | 2012-01-25 11:07:03 +0200 | [diff] [blame] | 51 | #include <linux/of.h> |
Kishon Vijay Abraham I | b4bfe6a | 2013-01-25 08:30:46 +0530 | [diff] [blame] | 52 | #include <linux/of_platform.h> |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 53 | |
Felipe Balbi | a418cc4 | 2012-07-19 13:56:07 +0300 | [diff] [blame] | 54 | #include <linux/usb/otg.h> |
Felipe Balbi | a418cc4 | 2012-07-19 13:56:07 +0300 | [diff] [blame] | 55 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 56 | /* |
| 57 | * All these registers belong to OMAP's Wrapper around the |
| 58 | * DesignWare USB3 Core. |
| 59 | */ |
| 60 | |
| 61 | #define USBOTGSS_REVISION 0x0000 |
| 62 | #define USBOTGSS_SYSCONFIG 0x0010 |
| 63 | #define USBOTGSS_IRQ_EOI 0x0020 |
George Cherian | ff7307b | 2013-06-12 14:53:46 +0530 | [diff] [blame^] | 64 | #define USBOTGSS_EOI_OFFSET 0x0008 |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 65 | #define USBOTGSS_IRQSTATUS_RAW_0 0x0024 |
| 66 | #define USBOTGSS_IRQSTATUS_0 0x0028 |
| 67 | #define USBOTGSS_IRQENABLE_SET_0 0x002c |
| 68 | #define USBOTGSS_IRQENABLE_CLR_0 0x0030 |
George Cherian | ff7307b | 2013-06-12 14:53:46 +0530 | [diff] [blame^] | 69 | #define USBOTGSS_IRQ0_OFFSET 0x0004 |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 70 | #define USBOTGSS_IRQSTATUS_RAW_1 0x0034 |
| 71 | #define USBOTGSS_IRQSTATUS_1 0x0038 |
| 72 | #define USBOTGSS_IRQENABLE_SET_1 0x003c |
| 73 | #define USBOTGSS_IRQENABLE_CLR_1 0x0040 |
George Cherian | ff7307b | 2013-06-12 14:53:46 +0530 | [diff] [blame^] | 74 | #define USBOTGSS_IRQSTATUS_EOI_MISC 0x0030 |
| 75 | #define USBOTGSS_IRQSTATUS_RAW_MISC 0x0034 |
| 76 | #define USBOTGSS_IRQSTATUS_MISC 0x0038 |
| 77 | #define USBOTGSS_IRQENABLE_SET_MISC 0x003c |
| 78 | #define USBOTGSS_IRQENABLE_CLR_MISC 0x0040 |
| 79 | #define USBOTGSS_IRQMISC_OFFSET 0x03fc |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 80 | #define USBOTGSS_UTMI_OTG_CTRL 0x0080 |
| 81 | #define USBOTGSS_UTMI_OTG_STATUS 0x0084 |
George Cherian | ff7307b | 2013-06-12 14:53:46 +0530 | [diff] [blame^] | 82 | #define USBOTGSS_UTMI_OTG_OFFSET 0x0480 |
| 83 | #define USBOTGSS_TXFIFO_DEPTH 0x0508 |
| 84 | #define USBOTGSS_RXFIFO_DEPTH 0x050c |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 85 | #define USBOTGSS_MMRAM_OFFSET 0x0100 |
| 86 | #define USBOTGSS_FLADJ 0x0104 |
| 87 | #define USBOTGSS_DEBUG_CFG 0x0108 |
| 88 | #define USBOTGSS_DEBUG_DATA 0x010c |
George Cherian | ff7307b | 2013-06-12 14:53:46 +0530 | [diff] [blame^] | 89 | #define USBOTGSS_DEV_EBC_EN 0x0110 |
| 90 | #define USBOTGSS_DEBUG_OFFSET 0x0600 |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 91 | |
George Cherian | ff7307b | 2013-06-12 14:53:46 +0530 | [diff] [blame^] | 92 | /* REVISION REGISTER */ |
| 93 | #define USBOTGSS_REVISION_XMAJOR(reg) ((reg >> 8) & 0x7) |
| 94 | #define USBOTGSS_REVISION_XMAJOR1 1 |
| 95 | #define USBOTGSS_REVISION_XMAJOR2 2 |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 96 | /* SYSCONFIG REGISTER */ |
| 97 | #define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16) |
Felipe Balbi | 4b5faa7a | 2011-09-06 10:56:51 +0300 | [diff] [blame] | 98 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 99 | /* IRQ_EOI REGISTER */ |
| 100 | #define USBOTGSS_IRQ_EOI_LINE_NUMBER (1 << 0) |
| 101 | |
| 102 | /* IRQS0 BITS */ |
| 103 | #define USBOTGSS_IRQO_COREIRQ_ST (1 << 0) |
| 104 | |
| 105 | /* IRQ1 BITS */ |
| 106 | #define USBOTGSS_IRQ1_DMADISABLECLR (1 << 17) |
| 107 | #define USBOTGSS_IRQ1_OEVT (1 << 16) |
| 108 | #define USBOTGSS_IRQ1_DRVVBUS_RISE (1 << 13) |
| 109 | #define USBOTGSS_IRQ1_CHRGVBUS_RISE (1 << 12) |
| 110 | #define USBOTGSS_IRQ1_DISCHRGVBUS_RISE (1 << 11) |
| 111 | #define USBOTGSS_IRQ1_IDPULLUP_RISE (1 << 8) |
| 112 | #define USBOTGSS_IRQ1_DRVVBUS_FALL (1 << 5) |
| 113 | #define USBOTGSS_IRQ1_CHRGVBUS_FALL (1 << 4) |
| 114 | #define USBOTGSS_IRQ1_DISCHRGVBUS_FALL (1 << 3) |
| 115 | #define USBOTGSS_IRQ1_IDPULLUP_FALL (1 << 0) |
| 116 | |
| 117 | /* UTMI_OTG_CTRL REGISTER */ |
| 118 | #define USBOTGSS_UTMI_OTG_CTRL_DRVVBUS (1 << 5) |
| 119 | #define USBOTGSS_UTMI_OTG_CTRL_CHRGVBUS (1 << 4) |
| 120 | #define USBOTGSS_UTMI_OTG_CTRL_DISCHRGVBUS (1 << 3) |
| 121 | #define USBOTGSS_UTMI_OTG_CTRL_IDPULLUP (1 << 0) |
| 122 | |
| 123 | /* UTMI_OTG_STATUS REGISTER */ |
| 124 | #define USBOTGSS_UTMI_OTG_STATUS_SW_MODE (1 << 31) |
| 125 | #define USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT (1 << 9) |
| 126 | #define USBOTGSS_UTMI_OTG_STATUS_TXBITSTUFFENABLE (1 << 8) |
| 127 | #define USBOTGSS_UTMI_OTG_STATUS_IDDIG (1 << 4) |
| 128 | #define USBOTGSS_UTMI_OTG_STATUS_SESSEND (1 << 3) |
| 129 | #define USBOTGSS_UTMI_OTG_STATUS_SESSVALID (1 << 2) |
| 130 | #define USBOTGSS_UTMI_OTG_STATUS_VBUSVALID (1 << 1) |
| 131 | |
| 132 | struct dwc3_omap { |
| 133 | /* device lock */ |
| 134 | spinlock_t lock; |
| 135 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 136 | struct device *dev; |
| 137 | |
| 138 | int irq; |
| 139 | void __iomem *base; |
| 140 | |
Felipe Balbi | f3e117f | 2013-02-11 11:12:02 +0200 | [diff] [blame] | 141 | u32 utmi_otg_status; |
George Cherian | 1e2a064 | 2013-06-12 14:53:45 +0530 | [diff] [blame] | 142 | u32 utmi_otg_offset; |
| 143 | u32 irqmisc_offset; |
| 144 | u32 irq_eoi_offset; |
| 145 | u32 debug_offset; |
| 146 | u32 irq0_offset; |
| 147 | u32 revision; |
Felipe Balbi | f3e117f | 2013-02-11 11:12:02 +0200 | [diff] [blame] | 148 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 149 | u32 dma_status:1; |
| 150 | }; |
| 151 | |
Felipe Balbi | a33bb21 | 2013-03-14 16:00:58 +0200 | [diff] [blame] | 152 | static struct dwc3_omap *_omap; |
Kishon Vijay Abraham I | 7e41bba | 2013-01-25 08:30:49 +0530 | [diff] [blame] | 153 | |
Ido Shayevitz | ab5e59d | 2012-04-24 14:18:38 +0300 | [diff] [blame] | 154 | static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset) |
| 155 | { |
| 156 | return readl(base + offset); |
| 157 | } |
| 158 | |
| 159 | static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value) |
| 160 | { |
| 161 | writel(value, base + offset); |
| 162 | } |
| 163 | |
Kishon Vijay Abraham I | 2ba7943 | 2013-03-07 18:51:44 +0530 | [diff] [blame] | 164 | int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) |
Kishon Vijay Abraham I | 7e41bba | 2013-01-25 08:30:49 +0530 | [diff] [blame] | 165 | { |
| 166 | u32 val; |
| 167 | struct dwc3_omap *omap = _omap; |
| 168 | |
Kishon Vijay Abraham I | 2ba7943 | 2013-03-07 18:51:44 +0530 | [diff] [blame] | 169 | if (!omap) |
| 170 | return -EPROBE_DEFER; |
| 171 | |
Kishon Vijay Abraham I | 7e41bba | 2013-01-25 08:30:49 +0530 | [diff] [blame] | 172 | switch (status) { |
| 173 | case OMAP_DWC3_ID_GROUND: |
| 174 | dev_dbg(omap->dev, "ID GND\n"); |
| 175 | |
| 176 | val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); |
| 177 | val &= ~(USBOTGSS_UTMI_OTG_STATUS_IDDIG |
| 178 | | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID |
| 179 | | USBOTGSS_UTMI_OTG_STATUS_SESSEND); |
| 180 | val |= USBOTGSS_UTMI_OTG_STATUS_SESSVALID |
| 181 | | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT; |
| 182 | dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); |
| 183 | break; |
| 184 | |
| 185 | case OMAP_DWC3_VBUS_VALID: |
| 186 | dev_dbg(omap->dev, "VBUS Connect\n"); |
| 187 | |
| 188 | val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); |
| 189 | val &= ~USBOTGSS_UTMI_OTG_STATUS_SESSEND; |
| 190 | val |= USBOTGSS_UTMI_OTG_STATUS_IDDIG |
| 191 | | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID |
| 192 | | USBOTGSS_UTMI_OTG_STATUS_SESSVALID |
| 193 | | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT; |
| 194 | dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); |
| 195 | break; |
| 196 | |
| 197 | case OMAP_DWC3_ID_FLOAT: |
| 198 | case OMAP_DWC3_VBUS_OFF: |
| 199 | dev_dbg(omap->dev, "VBUS Disconnect\n"); |
| 200 | |
| 201 | val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); |
| 202 | val &= ~(USBOTGSS_UTMI_OTG_STATUS_SESSVALID |
| 203 | | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID |
| 204 | | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT); |
| 205 | val |= USBOTGSS_UTMI_OTG_STATUS_SESSEND |
| 206 | | USBOTGSS_UTMI_OTG_STATUS_IDDIG; |
| 207 | dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); |
| 208 | break; |
| 209 | |
| 210 | default: |
| 211 | dev_dbg(omap->dev, "ID float\n"); |
| 212 | } |
| 213 | |
Kishon Vijay Abraham I | 2ba7943 | 2013-03-07 18:51:44 +0530 | [diff] [blame] | 214 | return 0; |
Kishon Vijay Abraham I | 7e41bba | 2013-01-25 08:30:49 +0530 | [diff] [blame] | 215 | } |
| 216 | EXPORT_SYMBOL_GPL(dwc3_omap_mailbox); |
| 217 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 218 | static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) |
| 219 | { |
| 220 | struct dwc3_omap *omap = _omap; |
| 221 | u32 reg; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 222 | |
| 223 | spin_lock(&omap->lock); |
| 224 | |
Ido Shayevitz | ab5e59d | 2012-04-24 14:18:38 +0300 | [diff] [blame] | 225 | reg = dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_1); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 226 | |
| 227 | if (reg & USBOTGSS_IRQ1_DMADISABLECLR) { |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 228 | dev_dbg(omap->dev, "DMA Disable was Cleared\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 229 | omap->dma_status = false; |
| 230 | } |
| 231 | |
| 232 | if (reg & USBOTGSS_IRQ1_OEVT) |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 233 | dev_dbg(omap->dev, "OTG Event\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 234 | |
Felipe Balbi | 42077b0 | 2011-09-06 12:00:39 +0300 | [diff] [blame] | 235 | if (reg & USBOTGSS_IRQ1_DRVVBUS_RISE) |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 236 | dev_dbg(omap->dev, "DRVVBUS Rise\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 237 | |
Felipe Balbi | 42077b0 | 2011-09-06 12:00:39 +0300 | [diff] [blame] | 238 | if (reg & USBOTGSS_IRQ1_CHRGVBUS_RISE) |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 239 | dev_dbg(omap->dev, "CHRGVBUS Rise\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 240 | |
Felipe Balbi | 42077b0 | 2011-09-06 12:00:39 +0300 | [diff] [blame] | 241 | if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_RISE) |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 242 | dev_dbg(omap->dev, "DISCHRGVBUS Rise\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 243 | |
Felipe Balbi | 42077b0 | 2011-09-06 12:00:39 +0300 | [diff] [blame] | 244 | if (reg & USBOTGSS_IRQ1_IDPULLUP_RISE) |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 245 | dev_dbg(omap->dev, "IDPULLUP Rise\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 246 | |
Felipe Balbi | 42077b0 | 2011-09-06 12:00:39 +0300 | [diff] [blame] | 247 | if (reg & USBOTGSS_IRQ1_DRVVBUS_FALL) |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 248 | dev_dbg(omap->dev, "DRVVBUS Fall\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 249 | |
Felipe Balbi | 42077b0 | 2011-09-06 12:00:39 +0300 | [diff] [blame] | 250 | if (reg & USBOTGSS_IRQ1_CHRGVBUS_FALL) |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 251 | dev_dbg(omap->dev, "CHRGVBUS Fall\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 252 | |
Felipe Balbi | 42077b0 | 2011-09-06 12:00:39 +0300 | [diff] [blame] | 253 | if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_FALL) |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 254 | dev_dbg(omap->dev, "DISCHRGVBUS Fall\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 255 | |
Felipe Balbi | 42077b0 | 2011-09-06 12:00:39 +0300 | [diff] [blame] | 256 | if (reg & USBOTGSS_IRQ1_IDPULLUP_FALL) |
Felipe Balbi | ccba3bc | 2011-09-01 14:46:16 +0300 | [diff] [blame] | 257 | dev_dbg(omap->dev, "IDPULLUP Fall\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 258 | |
Ido Shayevitz | ab5e59d | 2012-04-24 14:18:38 +0300 | [diff] [blame] | 259 | dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_1, reg); |
Felipe Balbi | 42077b0 | 2011-09-06 12:00:39 +0300 | [diff] [blame] | 260 | |
Ido Shayevitz | ab5e59d | 2012-04-24 14:18:38 +0300 | [diff] [blame] | 261 | reg = dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_0); |
| 262 | dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0, reg); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 263 | |
| 264 | spin_unlock(&omap->lock); |
| 265 | |
| 266 | return IRQ_HANDLED; |
| 267 | } |
| 268 | |
Kishon Vijay Abraham I | 94c6a43 | 2013-01-25 08:30:45 +0530 | [diff] [blame] | 269 | static int dwc3_omap_remove_core(struct device *dev, void *c) |
| 270 | { |
| 271 | struct platform_device *pdev = to_platform_device(dev); |
| 272 | |
| 273 | platform_device_unregister(pdev); |
| 274 | |
| 275 | return 0; |
| 276 | } |
| 277 | |
Felipe Balbi | 9a4b5da | 2013-02-11 11:03:59 +0200 | [diff] [blame] | 278 | static void dwc3_omap_enable_irqs(struct dwc3_omap *omap) |
| 279 | { |
| 280 | u32 reg; |
| 281 | |
| 282 | /* enable all IRQs */ |
| 283 | reg = USBOTGSS_IRQO_COREIRQ_ST; |
| 284 | dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0, reg); |
| 285 | |
| 286 | reg = (USBOTGSS_IRQ1_OEVT | |
| 287 | USBOTGSS_IRQ1_DRVVBUS_RISE | |
| 288 | USBOTGSS_IRQ1_CHRGVBUS_RISE | |
| 289 | USBOTGSS_IRQ1_DISCHRGVBUS_RISE | |
| 290 | USBOTGSS_IRQ1_IDPULLUP_RISE | |
| 291 | USBOTGSS_IRQ1_DRVVBUS_FALL | |
| 292 | USBOTGSS_IRQ1_CHRGVBUS_FALL | |
| 293 | USBOTGSS_IRQ1_DISCHRGVBUS_FALL | |
| 294 | USBOTGSS_IRQ1_IDPULLUP_FALL); |
| 295 | |
| 296 | dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, reg); |
| 297 | } |
| 298 | |
| 299 | static void dwc3_omap_disable_irqs(struct dwc3_omap *omap) |
| 300 | { |
| 301 | /* disable all IRQs */ |
| 302 | dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, 0x00); |
| 303 | dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0, 0x00); |
| 304 | } |
| 305 | |
Kishon Vijay Abraham I | ddff14f | 2013-03-07 18:51:43 +0530 | [diff] [blame] | 306 | static u64 dwc3_omap_dma_mask = DMA_BIT_MASK(32); |
| 307 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 308 | static int dwc3_omap_probe(struct platform_device *pdev) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 309 | { |
Felipe Balbi | 45b3cd4a | 2012-01-25 11:07:03 +0200 | [diff] [blame] | 310 | struct device_node *node = pdev->dev.of_node; |
| 311 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 312 | struct dwc3_omap *omap; |
| 313 | struct resource *res; |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 314 | struct device *dev = &pdev->dev; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 315 | |
| 316 | int ret = -ENOMEM; |
| 317 | int irq; |
| 318 | |
Kishon Vijay Abraham I | e36a0c8 | 2013-02-26 20:03:27 +0530 | [diff] [blame] | 319 | int utmi_mode = 0; |
George Cherian | ff7307b | 2013-06-12 14:53:46 +0530 | [diff] [blame^] | 320 | int x_major; |
Kishon Vijay Abraham I | e36a0c8 | 2013-02-26 20:03:27 +0530 | [diff] [blame] | 321 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 322 | u32 reg; |
| 323 | |
| 324 | void __iomem *base; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 325 | |
Kishon Vijay Abraham I | 4495afc | 2013-02-26 20:03:28 +0530 | [diff] [blame] | 326 | if (!node) { |
| 327 | dev_err(dev, "device node not found\n"); |
| 328 | return -EINVAL; |
| 329 | } |
| 330 | |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 331 | omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 332 | if (!omap) { |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 333 | dev_err(dev, "not enough memory\n"); |
| 334 | return -ENOMEM; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | platform_set_drvdata(pdev, omap); |
| 338 | |
Kishon Vijay Abraham I | e36a0c8 | 2013-02-26 20:03:27 +0530 | [diff] [blame] | 339 | irq = platform_get_irq(pdev, 0); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 340 | if (irq < 0) { |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 341 | dev_err(dev, "missing IRQ resource\n"); |
| 342 | return -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 343 | } |
| 344 | |
Kishon Vijay Abraham I | e36a0c8 | 2013-02-26 20:03:27 +0530 | [diff] [blame] | 345 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 346 | if (!res) { |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 347 | dev_err(dev, "missing memory base resource\n"); |
| 348 | return -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 349 | } |
| 350 | |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 351 | base = devm_ioremap_nocache(dev, res->start, resource_size(res)); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 352 | if (!base) { |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 353 | dev_err(dev, "ioremap failed\n"); |
| 354 | return -ENOMEM; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 355 | } |
| 356 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 357 | spin_lock_init(&omap->lock); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 358 | |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 359 | omap->dev = dev; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 360 | omap->irq = irq; |
| 361 | omap->base = base; |
Kishon Vijay Abraham I | ddff14f | 2013-03-07 18:51:43 +0530 | [diff] [blame] | 362 | dev->dma_mask = &dwc3_omap_dma_mask; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 363 | |
Kishon Vijay Abraham I | 7e41bba | 2013-01-25 08:30:49 +0530 | [diff] [blame] | 364 | /* |
| 365 | * REVISIT if we ever have two instances of the wrapper, we will be |
| 366 | * in big trouble |
| 367 | */ |
| 368 | _omap = omap; |
| 369 | |
Kishon Vijay Abraham I | af310e9 | 2013-01-25 08:30:47 +0530 | [diff] [blame] | 370 | pm_runtime_enable(dev); |
| 371 | ret = pm_runtime_get_sync(dev); |
| 372 | if (ret < 0) { |
| 373 | dev_err(dev, "get_sync failed with err %d\n", ret); |
Kishon Vijay Abraham I | 594daba | 2013-06-03 21:43:39 +0530 | [diff] [blame] | 374 | goto err0; |
Kishon Vijay Abraham I | af310e9 | 2013-01-25 08:30:47 +0530 | [diff] [blame] | 375 | } |
| 376 | |
George Cherian | ff7307b | 2013-06-12 14:53:46 +0530 | [diff] [blame^] | 377 | reg = dwc3_omap_readl(omap->base, USBOTGSS_REVISION); |
| 378 | omap->revision = reg; |
| 379 | x_major = USBOTGSS_REVISION_XMAJOR(reg); |
| 380 | |
| 381 | /* Differentiate between OMAP5,AM437x and others*/ |
| 382 | switch (x_major) { |
| 383 | case USBOTGSS_REVISION_XMAJOR1: |
| 384 | case USBOTGSS_REVISION_XMAJOR2: |
| 385 | omap->irq_eoi_offset = 0; |
| 386 | omap->irq0_offset = 0; |
| 387 | omap->irqmisc_offset = 0; |
| 388 | omap->utmi_otg_offset = 0; |
| 389 | omap->debug_offset = 0; |
| 390 | break; |
| 391 | default: |
| 392 | /* Default to the latest revision */ |
| 393 | omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; |
| 394 | omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; |
| 395 | omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; |
| 396 | omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; |
| 397 | omap->debug_offset = USBOTGSS_DEBUG_OFFSET; |
| 398 | break; |
| 399 | } |
| 400 | |
| 401 | /* For OMAP5(ES2.0) and AM437x x_major is 2 even though there are |
| 402 | * changes in wrapper registers, Using dt compatible for aegis |
| 403 | */ |
| 404 | |
| 405 | if (of_device_is_compatible(node, "ti,am437x-dwc3")) { |
| 406 | omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; |
| 407 | omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; |
| 408 | omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; |
| 409 | omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; |
| 410 | omap->debug_offset = USBOTGSS_DEBUG_OFFSET; |
| 411 | } |
| 412 | |
Ido Shayevitz | ab5e59d | 2012-04-24 14:18:38 +0300 | [diff] [blame] | 413 | reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); |
Felipe Balbi | 9962444 | 2011-09-01 22:26:25 +0300 | [diff] [blame] | 414 | |
Kishon Vijay Abraham I | 4495afc | 2013-02-26 20:03:28 +0530 | [diff] [blame] | 415 | of_property_read_u32(node, "utmi-mode", &utmi_mode); |
Kishon Vijay Abraham I | e36a0c8 | 2013-02-26 20:03:27 +0530 | [diff] [blame] | 416 | |
| 417 | switch (utmi_mode) { |
| 418 | case DWC3_OMAP_UTMI_MODE_SW: |
| 419 | reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE; |
| 420 | break; |
| 421 | case DWC3_OMAP_UTMI_MODE_HW: |
| 422 | reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE; |
| 423 | break; |
| 424 | default: |
| 425 | dev_dbg(dev, "UNKNOWN utmi mode %d\n", utmi_mode); |
Felipe Balbi | 9962444 | 2011-09-01 22:26:25 +0300 | [diff] [blame] | 426 | } |
| 427 | |
Ido Shayevitz | ab5e59d | 2012-04-24 14:18:38 +0300 | [diff] [blame] | 428 | dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, reg); |
Felipe Balbi | 9962444 | 2011-09-01 22:26:25 +0300 | [diff] [blame] | 429 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 430 | /* check the DMA Status */ |
Ido Shayevitz | ab5e59d | 2012-04-24 14:18:38 +0300 | [diff] [blame] | 431 | reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 432 | omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE); |
| 433 | |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 434 | ret = devm_request_irq(dev, omap->irq, dwc3_omap_interrupt, 0, |
Felipe Balbi | dd17a6b | 2011-09-06 10:57:41 +0300 | [diff] [blame] | 435 | "dwc3-omap", omap); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 436 | if (ret) { |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 437 | dev_err(dev, "failed to request IRQ #%d --> %d\n", |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 438 | omap->irq, ret); |
Kishon Vijay Abraham I | 594daba | 2013-06-03 21:43:39 +0530 | [diff] [blame] | 439 | goto err1; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 440 | } |
| 441 | |
Felipe Balbi | 9a4b5da | 2013-02-11 11:03:59 +0200 | [diff] [blame] | 442 | dwc3_omap_enable_irqs(omap); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 443 | |
Kishon Vijay Abraham I | 4495afc | 2013-02-26 20:03:28 +0530 | [diff] [blame] | 444 | ret = of_platform_populate(node, NULL, NULL, dev); |
| 445 | if (ret) { |
| 446 | dev_err(&pdev->dev, "failed to create dwc3 core\n"); |
Kishon Vijay Abraham I | 594daba | 2013-06-03 21:43:39 +0530 | [diff] [blame] | 447 | goto err2; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 448 | } |
| 449 | |
| 450 | return 0; |
Kishon Vijay Abraham I | 594daba | 2013-06-03 21:43:39 +0530 | [diff] [blame] | 451 | |
| 452 | err2: |
| 453 | dwc3_omap_disable_irqs(omap); |
| 454 | |
| 455 | err1: |
| 456 | pm_runtime_put_sync(dev); |
| 457 | |
| 458 | err0: |
| 459 | pm_runtime_disable(dev); |
| 460 | |
| 461 | return ret; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 462 | } |
| 463 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 464 | static int dwc3_omap_remove(struct platform_device *pdev) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 465 | { |
Felipe Balbi | 9a4b5da | 2013-02-11 11:03:59 +0200 | [diff] [blame] | 466 | struct dwc3_omap *omap = platform_get_drvdata(pdev); |
| 467 | |
| 468 | dwc3_omap_disable_irqs(omap); |
Kishon Vijay Abraham I | af310e9 | 2013-01-25 08:30:47 +0530 | [diff] [blame] | 469 | pm_runtime_put_sync(&pdev->dev); |
| 470 | pm_runtime_disable(&pdev->dev); |
Kishon Vijay Abraham I | 94c6a43 | 2013-01-25 08:30:45 +0530 | [diff] [blame] | 471 | device_for_each_child(&pdev->dev, NULL, dwc3_omap_remove_core); |
| 472 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 473 | return 0; |
| 474 | } |
| 475 | |
Felipe Balbi | 2c2dc89 | 2013-02-11 10:31:15 +0200 | [diff] [blame] | 476 | static const struct of_device_id of_dwc3_match[] = { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 477 | { |
Kishon Vijay Abraham I | e36a0c8 | 2013-02-26 20:03:27 +0530 | [diff] [blame] | 478 | .compatible = "ti,dwc3" |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 479 | }, |
George Cherian | ff7307b | 2013-06-12 14:53:46 +0530 | [diff] [blame^] | 480 | { |
| 481 | .compatible = "ti,am437x-dwc3" |
| 482 | }, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 483 | { }, |
| 484 | }; |
Felipe Balbi | 2c2dc89 | 2013-02-11 10:31:15 +0200 | [diff] [blame] | 485 | MODULE_DEVICE_TABLE(of, of_dwc3_match); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 486 | |
Jingoo Han | 19fda7c | 2013-03-26 01:52:48 +0000 | [diff] [blame] | 487 | #ifdef CONFIG_PM_SLEEP |
Felipe Balbi | f3e117f | 2013-02-11 11:12:02 +0200 | [diff] [blame] | 488 | static int dwc3_omap_prepare(struct device *dev) |
| 489 | { |
| 490 | struct dwc3_omap *omap = dev_get_drvdata(dev); |
| 491 | |
| 492 | dwc3_omap_disable_irqs(omap); |
| 493 | |
| 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | static void dwc3_omap_complete(struct device *dev) |
| 498 | { |
| 499 | struct dwc3_omap *omap = dev_get_drvdata(dev); |
| 500 | |
| 501 | dwc3_omap_enable_irqs(omap); |
| 502 | } |
| 503 | |
| 504 | static int dwc3_omap_suspend(struct device *dev) |
| 505 | { |
| 506 | struct dwc3_omap *omap = dev_get_drvdata(dev); |
| 507 | |
| 508 | omap->utmi_otg_status = dwc3_omap_readl(omap->base, |
| 509 | USBOTGSS_UTMI_OTG_STATUS); |
| 510 | |
| 511 | return 0; |
| 512 | } |
| 513 | |
| 514 | static int dwc3_omap_resume(struct device *dev) |
| 515 | { |
| 516 | struct dwc3_omap *omap = dev_get_drvdata(dev); |
| 517 | |
| 518 | dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, |
| 519 | omap->utmi_otg_status); |
| 520 | |
| 521 | pm_runtime_disable(dev); |
| 522 | pm_runtime_set_active(dev); |
| 523 | pm_runtime_enable(dev); |
| 524 | |
| 525 | return 0; |
| 526 | } |
| 527 | |
| 528 | static const struct dev_pm_ops dwc3_omap_dev_pm_ops = { |
| 529 | .prepare = dwc3_omap_prepare, |
| 530 | .complete = dwc3_omap_complete, |
| 531 | |
| 532 | SET_SYSTEM_SLEEP_PM_OPS(dwc3_omap_suspend, dwc3_omap_resume) |
| 533 | }; |
| 534 | |
| 535 | #define DEV_PM_OPS (&dwc3_omap_dev_pm_ops) |
| 536 | #else |
| 537 | #define DEV_PM_OPS NULL |
Jingoo Han | 19fda7c | 2013-03-26 01:52:48 +0000 | [diff] [blame] | 538 | #endif /* CONFIG_PM_SLEEP */ |
Felipe Balbi | f3e117f | 2013-02-11 11:12:02 +0200 | [diff] [blame] | 539 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 540 | static struct platform_driver dwc3_omap_driver = { |
| 541 | .probe = dwc3_omap_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 542 | .remove = dwc3_omap_remove, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 543 | .driver = { |
| 544 | .name = "omap-dwc3", |
Felipe Balbi | 2c2dc89 | 2013-02-11 10:31:15 +0200 | [diff] [blame] | 545 | .of_match_table = of_dwc3_match, |
Felipe Balbi | f3e117f | 2013-02-11 11:12:02 +0200 | [diff] [blame] | 546 | .pm = DEV_PM_OPS, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 547 | }, |
| 548 | }; |
| 549 | |
Axel Lin | cc27c96 | 2011-11-27 20:16:27 +0800 | [diff] [blame] | 550 | module_platform_driver(dwc3_omap_driver); |
| 551 | |
Sebastian Andrzej Siewior | 7ae4fc4 | 2011-10-19 19:39:50 +0200 | [diff] [blame] | 552 | MODULE_ALIAS("platform:omap-dwc3"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 553 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); |
| 554 | MODULE_LICENSE("Dual BSD/GPL"); |
| 555 | MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer"); |