1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Driver for the NXP ISP1760 chip 4 * 5 * Copyright 2021 Linaro, Rui Miguel Silva 6 * Copyright 2014 Laurent Pinchart 7 * Copyright 2007 Sebastian Siewior 8 * 9 * Contacts: 10 * Sebastian Siewior <bigeasy@linutronix.de> 11 * Laurent Pinchart <laurent.pinchart@ideasonboard.com> 12 * Rui Miguel Silva <rui.silva@linaro.org> 13 */ 14 15#include <linux/delay.h> 16#include <linux/gpio/consumer.h> 17#include <linux/io.h> 18#include <linux/kernel.h> 19#include <linux/module.h> 20#include <linux/regmap.h> 21#include <linux/slab.h> 22#include <linux/usb.h> 23 24#include "isp1760-core.h" 25#include "isp1760-hcd.h" 26#include "isp1760-regs.h" 27#include "isp1760-udc.h" 28 29static int isp1760_init_core(struct isp1760_device *isp) 30{ 31 struct isp1760_hcd *hcd = &isp->hcd; 32 struct isp1760_udc *udc = &isp->udc; 33 u32 otg_ctrl; 34 35 /* Low-level chip reset */ 36 if (isp->rst_gpio) { 37 gpiod_set_value_cansleep(isp->rst_gpio, 1); 38 msleep(50); 39 gpiod_set_value_cansleep(isp->rst_gpio, 0); 40 } 41 42 /* 43 * Reset the host controller, including the CPU interface 44 * configuration. 45 */ 46 isp1760_field_set(hcd->fields, SW_RESET_RESET_ALL); 47 msleep(100); 48 49 /* Setup HW Mode Control: This assumes a level active-low interrupt */ 50 if ((isp->devflags & ISP1760_FLAG_ANALOG_OC) && hcd->is_isp1763) { 51 dev_err(isp->dev, "isp1763 analog overcurrent not available\n"); 52 return -EINVAL; 53 } 54 55 if (isp->devflags & ISP1760_FLAG_BUS_WIDTH_16) 56 isp1760_field_clear(hcd->fields, HW_DATA_BUS_WIDTH); 57 if (isp->devflags & ISP1760_FLAG_BUS_WIDTH_8) 58 isp1760_field_set(hcd->fields, HW_DATA_BUS_WIDTH); 59 if (isp->devflags & ISP1760_FLAG_ANALOG_OC) 60 isp1760_field_set(hcd->fields, HW_ANA_DIGI_OC); 61 if (isp->devflags & ISP1760_FLAG_DACK_POL_HIGH) 62 isp1760_field_set(hcd->fields, HW_DACK_POL_HIGH); 63 if (isp->devflags & ISP1760_FLAG_DREQ_POL_HIGH) 64 isp1760_field_set(hcd->fields, HW_DREQ_POL_HIGH); 65 if (isp->devflags & ISP1760_FLAG_INTR_POL_HIGH) 66 isp1760_field_set(hcd->fields, HW_INTR_HIGH_ACT); 67 if (isp->devflags & ISP1760_FLAG_INTR_EDGE_TRIG) 68 isp1760_field_set(hcd->fields, HW_INTR_EDGE_TRIG); 69 70 /* 71 * The ISP1761 has a dedicated DC IRQ line but supports sharing the HC 72 * IRQ line for both the host and device controllers. Hardcode IRQ 73 * sharing for now and disable the DC interrupts globally to avoid 74 * spurious interrupts during HCD registration. 75 */ 76 if (isp->devflags & ISP1760_FLAG_ISP1761) { 77 isp1760_reg_write(udc->regs, ISP176x_DC_MODE, 0); 78 isp1760_field_set(hcd->fields, HW_COMN_IRQ); 79 } 80 81 /* 82 * PORT 1 Control register of the ISP1760 is the OTG control register 83 * on ISP1761. 84 * 85 * TODO: Really support OTG. For now we configure port 1 in device mode 86 */ 87 if (isp->devflags & ISP1760_FLAG_ISP1761) { 88 if (isp->devflags & ISP1760_FLAG_PERIPHERAL_EN) { 89 otg_ctrl = (ISP176x_HW_DM_PULLDOWN_CLEAR | 90 ISP176x_HW_DP_PULLDOWN_CLEAR | 91 ISP176x_HW_OTG_DISABLE); 92 } else { 93 otg_ctrl = (ISP176x_HW_SW_SEL_HC_DC_CLEAR | 94 ISP176x_HW_VBUS_DRV | 95 ISP176x_HW_SEL_CP_EXT); 96 } 97 isp1760_reg_write(hcd->regs, ISP176x_HC_OTG_CTRL, otg_ctrl); 98 } 99 100 dev_info(isp->dev, "%s bus width: %u, oc: %s\n", 101 hcd->is_isp1763 ? "isp1763" : "isp1760", 102 isp->devflags & ISP1760_FLAG_BUS_WIDTH_8 ? 8 : 103 isp->devflags & ISP1760_FLAG_BUS_WIDTH_16 ? 16 : 32, 104 hcd->is_isp1763 ? "not available" : 105 isp->devflags & ISP1760_FLAG_ANALOG_OC ? "analog" : "digital"); 106 107 return 0; 108} 109 110void isp1760_set_pullup(struct isp1760_device *isp, bool enable) 111{ 112 struct isp1760_udc *udc = &isp->udc; 113 114 if (enable) 115 isp1760_field_set(udc->fields, HW_DP_PULLUP); 116 else 117 isp1760_field_set(udc->fields, HW_DP_PULLUP_CLEAR); 118} 119 120/* 121 * ISP1760/61: 122 * 123 * 60kb divided in: 124 * - 32 blocks @ 256 bytes 125 * - 20 blocks @ 1024 bytes 126 * - 4 blocks @ 8192 bytes 127 */ 128static const struct isp1760_memory_layout isp176x_memory_conf = { 129 .blocks[0] = 32, 130 .blocks_size[0] = 256, 131 .blocks[1] = 20, 132 .blocks_size[1] = 1024, 133 .blocks[2] = 4, 134 .blocks_size[2] = 8192, 135 136 .slot_num = 32, 137 .payload_blocks = 32 + 20 + 4, 138 .payload_area_size = 0xf000, 139}; 140 141/* 142 * ISP1763: 143 * 144 * 20kb divided in: 145 * - 8 blocks @ 256 bytes 146 * - 2 blocks @ 1024 bytes 147 * - 4 blocks @ 4096 bytes 148 */ 149static const struct isp1760_memory_layout isp1763_memory_conf = { 150 .blocks[0] = 8, 151 .blocks_size[0] = 256, 152 .blocks[1] = 2, 153 .blocks_size[1] = 1024, 154 .blocks[2] = 4, 155 .blocks_size[2] = 4096, 156 157 .slot_num = 16, 158 .payload_blocks = 8 + 2 + 4, 159 .payload_area_size = 0x5000, 160}; 161 162static const struct regmap_range isp176x_hc_volatile_ranges[] = { 163 regmap_reg_range(ISP176x_HC_USBCMD, ISP176x_HC_ATL_PTD_LASTPTD), 164 regmap_reg_range(ISP176x_HC_BUFFER_STATUS, ISP176x_HC_MEMORY), 165 regmap_reg_range(ISP176x_HC_INTERRUPT, ISP176x_HC_OTG_CTRL_CLEAR), 166}; 167 168static const struct regmap_access_table isp176x_hc_volatile_table = { 169 .yes_ranges = isp176x_hc_volatile_ranges, 170 .n_yes_ranges = ARRAY_SIZE(isp176x_hc_volatile_ranges), 171}; 172 173static const struct regmap_config isp1760_hc_regmap_conf = { 174 .name = "isp1760-hc", 175 .reg_bits = 16, 176 .reg_stride = 4, 177 .val_bits = 32, 178 .fast_io = true, 179 .max_register = ISP176x_HC_OTG_CTRL_CLEAR, 180 .volatile_table = &isp176x_hc_volatile_table, 181}; 182 183static const struct reg_field isp1760_hc_reg_fields[] = { 184 [HCS_PPC] = REG_FIELD(ISP176x_HC_HCSPARAMS, 4, 4), 185 [HCS_N_PORTS] = REG_FIELD(ISP176x_HC_HCSPARAMS, 0, 3), 186 [HCC_ISOC_CACHE] = REG_FIELD(ISP176x_HC_HCCPARAMS, 7, 7), 187 [HCC_ISOC_THRES] = REG_FIELD(ISP176x_HC_HCCPARAMS, 4, 6), 188 [CMD_LRESET] = REG_FIELD(ISP176x_HC_USBCMD, 7, 7), 189 [CMD_RESET] = REG_FIELD(ISP176x_HC_USBCMD, 1, 1), 190 [CMD_RUN] = REG_FIELD(ISP176x_HC_USBCMD, 0, 0), 191 [STS_PCD] = REG_FIELD(ISP176x_HC_USBSTS, 2, 2), 192 [HC_FRINDEX] = REG_FIELD(ISP176x_HC_FRINDEX, 0, 13), 193 [FLAG_CF] = REG_FIELD(ISP176x_HC_CONFIGFLAG, 0, 0), 194 [HC_ISO_PTD_DONEMAP] = REG_FIELD(ISP176x_HC_ISO_PTD_DONEMAP, 0, 31), 195 [HC_ISO_PTD_SKIPMAP] = REG_FIELD(ISP176x_HC_ISO_PTD_SKIPMAP, 0, 31), 196 [HC_ISO_PTD_LASTPTD] = REG_FIELD(ISP176x_HC_ISO_PTD_LASTPTD, 0, 31), 197 [HC_INT_PTD_DONEMAP] = REG_FIELD(ISP176x_HC_INT_PTD_DONEMAP, 0, 31), 198 [HC_INT_PTD_SKIPMAP] = REG_FIELD(ISP176x_HC_INT_PTD_SKIPMAP, 0, 31), 199 [HC_INT_PTD_LASTPTD] = REG_FIELD(ISP176x_HC_INT_PTD_LASTPTD, 0, 31), 200 [HC_ATL_PTD_DONEMAP] = REG_FIELD(ISP176x_HC_ATL_PTD_DONEMAP, 0, 31), 201 [HC_ATL_PTD_SKIPMAP] = REG_FIELD(ISP176x_HC_ATL_PTD_SKIPMAP, 0, 31), 202 [HC_ATL_PTD_LASTPTD] = REG_FIELD(ISP176x_HC_ATL_PTD_LASTPTD, 0, 31), 203 [PORT_OWNER] = REG_FIELD(ISP176x_HC_PORTSC1, 13, 13), 204 [PORT_POWER] = REG_FIELD(ISP176x_HC_PORTSC1, 12, 12), 205 [PORT_LSTATUS] = REG_FIELD(ISP176x_HC_PORTSC1, 10, 11), 206 [PORT_RESET] = REG_FIELD(ISP176x_HC_PORTSC1, 8, 8), 207 [PORT_SUSPEND] = REG_FIELD(ISP176x_HC_PORTSC1, 7, 7), 208 [PORT_RESUME] = REG_FIELD(ISP176x_HC_PORTSC1, 6, 6), 209 [PORT_PE] = REG_FIELD(ISP176x_HC_PORTSC1, 2, 2), 210 [PORT_CSC] = REG_FIELD(ISP176x_HC_PORTSC1, 1, 1), 211 [PORT_CONNECT] = REG_FIELD(ISP176x_HC_PORTSC1, 0, 0), 212 [ALL_ATX_RESET] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 31, 31), 213 [HW_ANA_DIGI_OC] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 15, 15), 214 [HW_COMN_IRQ] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 10, 10), 215 [HW_DATA_BUS_WIDTH] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 8, 8), 216 [HW_DACK_POL_HIGH] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 6, 6), 217 [HW_DREQ_POL_HIGH] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 5, 5), 218 [HW_INTR_HIGH_ACT] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 2, 2), 219 [HW_INTR_EDGE_TRIG] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 1, 1), 220 [HW_GLOBAL_INTR_EN] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 0, 0), 221 [HC_CHIP_REV] = REG_FIELD(ISP176x_HC_CHIP_ID, 16, 31), 222 [HC_CHIP_ID_HIGH] = REG_FIELD(ISP176x_HC_CHIP_ID, 8, 15), 223 [HC_CHIP_ID_LOW] = REG_FIELD(ISP176x_HC_CHIP_ID, 0, 7), 224 [HC_SCRATCH] = REG_FIELD(ISP176x_HC_SCRATCH, 0, 31), 225 [SW_RESET_RESET_ALL] = REG_FIELD(ISP176x_HC_RESET, 0, 0), 226 [ISO_BUF_FILL] = REG_FIELD(ISP176x_HC_BUFFER_STATUS, 2, 2), 227 [INT_BUF_FILL] = REG_FIELD(ISP176x_HC_BUFFER_STATUS, 1, 1), 228 [ATL_BUF_FILL] = REG_FIELD(ISP176x_HC_BUFFER_STATUS, 0, 0), 229 [MEM_BANK_SEL] = REG_FIELD(ISP176x_HC_MEMORY, 16, 17), 230 [MEM_START_ADDR] = REG_FIELD(ISP176x_HC_MEMORY, 0, 15), 231 [HC_INTERRUPT] = REG_FIELD(ISP176x_HC_INTERRUPT, 0, 9), 232 [HC_ATL_IRQ_ENABLE] = REG_FIELD(ISP176x_HC_INTERRUPT_ENABLE, 8, 8), 233 [HC_INT_IRQ_ENABLE] = REG_FIELD(ISP176x_HC_INTERRUPT_ENABLE, 7, 7), 234 [HC_ISO_IRQ_MASK_OR] = REG_FIELD(ISP176x_HC_ISO_IRQ_MASK_OR, 0, 31), 235 [HC_INT_IRQ_MASK_OR] = REG_FIELD(ISP176x_HC_INT_IRQ_MASK_OR, 0, 31), 236 [HC_ATL_IRQ_MASK_OR] = REG_FIELD(ISP176x_HC_ATL_IRQ_MASK_OR, 0, 31), 237 [HC_ISO_IRQ_MASK_AND] = REG_FIELD(ISP176x_HC_ISO_IRQ_MASK_AND, 0, 31), 238 [HC_INT_IRQ_MASK_AND] = REG_FIELD(ISP176x_HC_INT_IRQ_MASK_AND, 0, 31), 239 [HC_ATL_IRQ_MASK_AND] = REG_FIELD(ISP176x_HC_ATL_IRQ_MASK_AND, 0, 31), 240 [HW_OTG_DISABLE_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 26, 26), 241 [HW_SW_SEL_HC_DC_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 23, 23), 242 [HW_VBUS_DRV_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 20, 20), 243 [HW_SEL_CP_EXT_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 19, 19), 244 [HW_DM_PULLDOWN_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 18, 18), 245 [HW_DP_PULLDOWN_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 17, 17), 246 [HW_DP_PULLUP_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 16, 16), 247 [HW_OTG_DISABLE] = REG_FIELD(ISP176x_HC_OTG_CTRL, 10, 10), 248 [HW_SW_SEL_HC_DC] = REG_FIELD(ISP176x_HC_OTG_CTRL, 7, 7), 249 [HW_VBUS_DRV] = REG_FIELD(ISP176x_HC_OTG_CTRL, 4, 4), 250 [HW_SEL_CP_EXT] = REG_FIELD(ISP176x_HC_OTG_CTRL, 3, 3), 251 [HW_DM_PULLDOWN] = REG_FIELD(ISP176x_HC_OTG_CTRL, 2, 2), 252 [HW_DP_PULLDOWN] = REG_FIELD(ISP176x_HC_OTG_CTRL, 1, 1), 253 [HW_DP_PULLUP] = REG_FIELD(ISP176x_HC_OTG_CTRL, 0, 0), 254 /* Make sure the array is sized properly during compilation */ 255 [HC_FIELD_MAX] = {}, 256}; 257 258static const struct reg_field isp1763_hc_reg_fields[] = { 259 [CMD_LRESET] = REG_FIELD(ISP1763_HC_USBCMD, 7, 7), 260 [CMD_RESET] = REG_FIELD(ISP1763_HC_USBCMD, 1, 1), 261 [CMD_RUN] = REG_FIELD(ISP1763_HC_USBCMD, 0, 0), 262 [STS_PCD] = REG_FIELD(ISP1763_HC_USBSTS, 2, 2), 263 [HC_FRINDEX] = REG_FIELD(ISP1763_HC_FRINDEX, 0, 13), 264 [FLAG_CF] = REG_FIELD(ISP1763_HC_CONFIGFLAG, 0, 0), 265 [HC_ISO_PTD_DONEMAP] = REG_FIELD(ISP1763_HC_ISO_PTD_DONEMAP, 0, 15), 266 [HC_ISO_PTD_SKIPMAP] = REG_FIELD(ISP1763_HC_ISO_PTD_SKIPMAP, 0, 15), 267 [HC_ISO_PTD_LASTPTD] = REG_FIELD(ISP1763_HC_ISO_PTD_LASTPTD, 0, 15), 268 [HC_INT_PTD_DONEMAP] = REG_FIELD(ISP1763_HC_INT_PTD_DONEMAP, 0, 15), 269 [HC_INT_PTD_SKIPMAP] = REG_FIELD(ISP1763_HC_INT_PTD_SKIPMAP, 0, 15), 270 [HC_INT_PTD_LASTPTD] = REG_FIELD(ISP1763_HC_INT_PTD_LASTPTD, 0, 15), 271 [HC_ATL_PTD_DONEMAP] = REG_FIELD(ISP1763_HC_ATL_PTD_DONEMAP, 0, 15), 272 [HC_ATL_PTD_SKIPMAP] = REG_FIELD(ISP1763_HC_ATL_PTD_SKIPMAP, 0, 15), 273 [HC_ATL_PTD_LASTPTD] = REG_FIELD(ISP1763_HC_ATL_PTD_LASTPTD, 0, 15), 274 [PORT_OWNER] = REG_FIELD(ISP1763_HC_PORTSC1, 13, 13), 275 [PORT_POWER] = REG_FIELD(ISP1763_HC_PORTSC1, 12, 12), 276 [PORT_LSTATUS] = REG_FIELD(ISP1763_HC_PORTSC1, 10, 11), 277 [PORT_RESET] = REG_FIELD(ISP1763_HC_PORTSC1, 8, 8), 278 [PORT_SUSPEND] = REG_FIELD(ISP1763_HC_PORTSC1, 7, 7), 279 [PORT_RESUME] = REG_FIELD(ISP1763_HC_PORTSC1, 6, 6), 280 [PORT_PE] = REG_FIELD(ISP1763_HC_PORTSC1, 2, 2), 281 [PORT_CSC] = REG_FIELD(ISP1763_HC_PORTSC1, 1, 1), 282 [PORT_CONNECT] = REG_FIELD(ISP1763_HC_PORTSC1, 0, 0), 283 [HW_DATA_BUS_WIDTH] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 4, 4), 284 [HW_DACK_POL_HIGH] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 6, 6), 285 [HW_DREQ_POL_HIGH] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 5, 5), 286 [HW_INTF_LOCK] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 3, 3), 287 [HW_INTR_HIGH_ACT] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 2, 2), 288 [HW_INTR_EDGE_TRIG] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 1, 1), 289 [HW_GLOBAL_INTR_EN] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 0, 0), 290 [SW_RESET_RESET_ATX] = REG_FIELD(ISP1763_HC_RESET, 3, 3), 291 [SW_RESET_RESET_ALL] = REG_FIELD(ISP1763_HC_RESET, 0, 0), 292 [HC_CHIP_ID_HIGH] = REG_FIELD(ISP1763_HC_CHIP_ID, 0, 15), 293 [HC_CHIP_ID_LOW] = REG_FIELD(ISP1763_HC_CHIP_REV, 8, 15), 294 [HC_CHIP_REV] = REG_FIELD(ISP1763_HC_CHIP_REV, 0, 7), 295 [HC_SCRATCH] = REG_FIELD(ISP1763_HC_SCRATCH, 0, 15), 296 [ISO_BUF_FILL] = REG_FIELD(ISP1763_HC_BUFFER_STATUS, 2, 2), 297 [INT_BUF_FILL] = REG_FIELD(ISP1763_HC_BUFFER_STATUS, 1, 1), 298 [ATL_BUF_FILL] = REG_FIELD(ISP1763_HC_BUFFER_STATUS, 0, 0), 299 [MEM_START_ADDR] = REG_FIELD(ISP1763_HC_MEMORY, 0, 15), 300 [HC_DATA] = REG_FIELD(ISP1763_HC_DATA, 0, 15), 301 [HC_INTERRUPT] = REG_FIELD(ISP1763_HC_INTERRUPT, 0, 10), 302 [HC_ATL_IRQ_ENABLE] = REG_FIELD(ISP1763_HC_INTERRUPT_ENABLE, 8, 8), 303 [HC_INT_IRQ_ENABLE] = REG_FIELD(ISP1763_HC_INTERRUPT_ENABLE, 7, 7), 304 [HC_ISO_IRQ_MASK_OR] = REG_FIELD(ISP1763_HC_ISO_IRQ_MASK_OR, 0, 15), 305 [HC_INT_IRQ_MASK_OR] = REG_FIELD(ISP1763_HC_INT_IRQ_MASK_OR, 0, 15), 306 [HC_ATL_IRQ_MASK_OR] = REG_FIELD(ISP1763_HC_ATL_IRQ_MASK_OR, 0, 15), 307 [HC_ISO_IRQ_MASK_AND] = REG_FIELD(ISP1763_HC_ISO_IRQ_MASK_AND, 0, 15), 308 [HC_INT_IRQ_MASK_AND] = REG_FIELD(ISP1763_HC_INT_IRQ_MASK_AND, 0, 15), 309 [HC_ATL_IRQ_MASK_AND] = REG_FIELD(ISP1763_HC_ATL_IRQ_MASK_AND, 0, 15), 310 [HW_HC_2_DIS] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 15, 15), 311 [HW_OTG_DISABLE] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 10, 10), 312 [HW_SW_SEL_HC_DC] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 7, 7), 313 [HW_VBUS_DRV] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 4, 4), 314 [HW_SEL_CP_EXT] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 3, 3), 315 [HW_DM_PULLDOWN] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 2, 2), 316 [HW_DP_PULLDOWN] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 1, 1), 317 [HW_DP_PULLUP] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 0, 0), 318 [HW_HC_2_DIS_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 15, 15), 319 [HW_OTG_DISABLE_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 10, 10), 320 [HW_SW_SEL_HC_DC_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 7, 7), 321 [HW_VBUS_DRV_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 4, 4), 322 [HW_SEL_CP_EXT_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 3, 3), 323 [HW_DM_PULLDOWN_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 2, 2), 324 [HW_DP_PULLDOWN_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 1, 1), 325 [HW_DP_PULLUP_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 0, 0), 326 /* Make sure the array is sized properly during compilation */ 327 [HC_FIELD_MAX] = {}, 328}; 329 330static const struct regmap_range isp1763_hc_volatile_ranges[] = { 331 regmap_reg_range(ISP1763_HC_USBCMD, ISP1763_HC_ATL_PTD_LASTPTD), 332 regmap_reg_range(ISP1763_HC_BUFFER_STATUS, ISP1763_HC_DATA), 333 regmap_reg_range(ISP1763_HC_INTERRUPT, ISP1763_HC_OTG_CTRL_CLEAR), 334}; 335 336static const struct regmap_access_table isp1763_hc_volatile_table = { 337 .yes_ranges = isp1763_hc_volatile_ranges, 338 .n_yes_ranges = ARRAY_SIZE(isp1763_hc_volatile_ranges), 339}; 340 341static const struct regmap_config isp1763_hc_regmap_conf = { 342 .name = "isp1763-hc", 343 .reg_bits = 8, 344 .reg_stride = 2, 345 .val_bits = 16, 346 .fast_io = true, 347 .max_register = ISP1763_HC_OTG_CTRL_CLEAR, 348 .volatile_table = &isp1763_hc_volatile_table, 349}; 350 351static const struct regmap_range isp176x_dc_volatile_ranges[] = { 352 regmap_reg_range(ISP176x_DC_EPMAXPKTSZ, ISP176x_DC_EPTYPE), 353 regmap_reg_range(ISP176x_DC_BUFLEN, ISP176x_DC_EPINDEX), 354}; 355 356static const struct regmap_access_table isp176x_dc_volatile_table = { 357 .yes_ranges = isp176x_dc_volatile_ranges, 358 .n_yes_ranges = ARRAY_SIZE(isp176x_dc_volatile_ranges), 359}; 360 361static const struct regmap_config isp1761_dc_regmap_conf = { 362 .name = "isp1761-dc", 363 .reg_bits = 16, 364 .reg_stride = 4, 365 .val_bits = 32, 366 .fast_io = true, 367 .max_register = ISP176x_DC_TESTMODE, 368 .volatile_table = &isp176x_dc_volatile_table, 369}; 370 371static const struct reg_field isp1761_dc_reg_fields[] = { 372 [DC_DEVEN] = REG_FIELD(ISP176x_DC_ADDRESS, 7, 7), 373 [DC_DEVADDR] = REG_FIELD(ISP176x_DC_ADDRESS, 0, 6), 374 [DC_VBUSSTAT] = REG_FIELD(ISP176x_DC_MODE, 8, 8), 375 [DC_SFRESET] = REG_FIELD(ISP176x_DC_MODE, 4, 4), 376 [DC_GLINTENA] = REG_FIELD(ISP176x_DC_MODE, 3, 3), 377 [DC_CDBGMOD_ACK] = REG_FIELD(ISP176x_DC_INTCONF, 6, 6), 378 [DC_DDBGMODIN_ACK] = REG_FIELD(ISP176x_DC_INTCONF, 4, 4), 379 [DC_DDBGMODOUT_ACK] = REG_FIELD(ISP176x_DC_INTCONF, 2, 2), 380 [DC_INTPOL] = REG_FIELD(ISP176x_DC_INTCONF, 0, 0), 381 [DC_IEPRXTX_7] = REG_FIELD(ISP176x_DC_INTENABLE, 25, 25), 382 [DC_IEPRXTX_6] = REG_FIELD(ISP176x_DC_INTENABLE, 23, 23), 383 [DC_IEPRXTX_5] = REG_FIELD(ISP176x_DC_INTENABLE, 21, 21), 384 [DC_IEPRXTX_4] = REG_FIELD(ISP176x_DC_INTENABLE, 19, 19), 385 [DC_IEPRXTX_3] = REG_FIELD(ISP176x_DC_INTENABLE, 17, 17), 386 [DC_IEPRXTX_2] = REG_FIELD(ISP176x_DC_INTENABLE, 15, 15), 387 [DC_IEPRXTX_1] = REG_FIELD(ISP176x_DC_INTENABLE, 13, 13), 388 [DC_IEPRXTX_0] = REG_FIELD(ISP176x_DC_INTENABLE, 11, 11), 389 [DC_IEP0SETUP] = REG_FIELD(ISP176x_DC_INTENABLE, 8, 8), 390 [DC_IEVBUS] = REG_FIELD(ISP176x_DC_INTENABLE, 7, 7), 391 [DC_IEHS_STA] = REG_FIELD(ISP176x_DC_INTENABLE, 5, 5), 392 [DC_IERESM] = REG_FIELD(ISP176x_DC_INTENABLE, 4, 4), 393 [DC_IESUSP] = REG_FIELD(ISP176x_DC_INTENABLE, 3, 3), 394 [DC_IEBRST] = REG_FIELD(ISP176x_DC_INTENABLE, 0, 0), 395 [DC_EP0SETUP] = REG_FIELD(ISP176x_DC_EPINDEX, 5, 5), 396 [DC_ENDPIDX] = REG_FIELD(ISP176x_DC_EPINDEX, 1, 4), 397 [DC_EPDIR] = REG_FIELD(ISP176x_DC_EPINDEX, 0, 0), 398 [DC_CLBUF] = REG_FIELD(ISP176x_DC_CTRLFUNC, 4, 4), 399 [DC_VENDP] = REG_FIELD(ISP176x_DC_CTRLFUNC, 3, 3), 400 [DC_DSEN] = REG_FIELD(ISP176x_DC_CTRLFUNC, 2, 2), 401 [DC_STATUS] = REG_FIELD(ISP176x_DC_CTRLFUNC, 1, 1), 402 [DC_STALL] = REG_FIELD(ISP176x_DC_CTRLFUNC, 0, 0), 403 [DC_BUFLEN] = REG_FIELD(ISP176x_DC_BUFLEN, 0, 15), 404 [DC_FFOSZ] = REG_FIELD(ISP176x_DC_EPMAXPKTSZ, 0, 10), 405 [DC_EPENABLE] = REG_FIELD(ISP176x_DC_EPTYPE, 3, 3), 406 [DC_ENDPTYP] = REG_FIELD(ISP176x_DC_EPTYPE, 0, 1), 407 [DC_UFRAMENUM] = REG_FIELD(ISP176x_DC_FRAMENUM, 11, 13), 408 [DC_FRAMENUM] = REG_FIELD(ISP176x_DC_FRAMENUM, 0, 10), 409 [DC_CHIP_ID_HIGH] = REG_FIELD(ISP176x_DC_CHIPID, 16, 31), 410 [DC_CHIP_ID_LOW] = REG_FIELD(ISP176x_DC_CHIPID, 0, 15), 411 [DC_SCRATCH] = REG_FIELD(ISP176x_DC_SCRATCH, 0, 15), 412 /* Make sure the array is sized properly during compilation */ 413 [DC_FIELD_MAX] = {}, 414}; 415 416static const struct regmap_range isp1763_dc_volatile_ranges[] = { 417 regmap_reg_range(ISP1763_DC_EPMAXPKTSZ, ISP1763_DC_EPTYPE), 418 regmap_reg_range(ISP1763_DC_BUFLEN, ISP1763_DC_EPINDEX), 419}; 420 421static const struct regmap_access_table isp1763_dc_volatile_table = { 422 .yes_ranges = isp1763_dc_volatile_ranges, 423 .n_yes_ranges = ARRAY_SIZE(isp1763_dc_volatile_ranges), 424}; 425 426static const struct reg_field isp1763_dc_reg_fields[] = { 427 [DC_DEVEN] = REG_FIELD(ISP1763_DC_ADDRESS, 7, 7), 428 [DC_DEVADDR] = REG_FIELD(ISP1763_DC_ADDRESS, 0, 6), 429 [DC_VBUSSTAT] = REG_FIELD(ISP1763_DC_MODE, 8, 8), 430 [DC_SFRESET] = REG_FIELD(ISP1763_DC_MODE, 4, 4), 431 [DC_GLINTENA] = REG_FIELD(ISP1763_DC_MODE, 3, 3), 432 [DC_CDBGMOD_ACK] = REG_FIELD(ISP1763_DC_INTCONF, 6, 6), 433 [DC_DDBGMODIN_ACK] = REG_FIELD(ISP1763_DC_INTCONF, 4, 4), 434 [DC_DDBGMODOUT_ACK] = REG_FIELD(ISP1763_DC_INTCONF, 2, 2), 435 [DC_INTPOL] = REG_FIELD(ISP1763_DC_INTCONF, 0, 0), 436 [DC_IEPRXTX_7] = REG_FIELD(ISP1763_DC_INTENABLE, 25, 25), 437 [DC_IEPRXTX_6] = REG_FIELD(ISP1763_DC_INTENABLE, 23, 23), 438 [DC_IEPRXTX_5] = REG_FIELD(ISP1763_DC_INTENABLE, 21, 21), 439 [DC_IEPRXTX_4] = REG_FIELD(ISP1763_DC_INTENABLE, 19, 19), 440 [DC_IEPRXTX_3] = REG_FIELD(ISP1763_DC_INTENABLE, 17, 17), 441 [DC_IEPRXTX_2] = REG_FIELD(ISP1763_DC_INTENABLE, 15, 15), 442 [DC_IEPRXTX_1] = REG_FIELD(ISP1763_DC_INTENABLE, 13, 13), 443 [DC_IEPRXTX_0] = REG_FIELD(ISP1763_DC_INTENABLE, 11, 11), 444 [DC_IEP0SETUP] = REG_FIELD(ISP1763_DC_INTENABLE, 8, 8), 445 [DC_IEVBUS] = REG_FIELD(ISP1763_DC_INTENABLE, 7, 7), 446 [DC_IEHS_STA] = REG_FIELD(ISP1763_DC_INTENABLE, 5, 5), 447 [DC_IERESM] = REG_FIELD(ISP1763_DC_INTENABLE, 4, 4), 448 [DC_IESUSP] = REG_FIELD(ISP1763_DC_INTENABLE, 3, 3), 449 [DC_IEBRST] = REG_FIELD(ISP1763_DC_INTENABLE, 0, 0), 450 [DC_EP0SETUP] = REG_FIELD(ISP1763_DC_EPINDEX, 5, 5), 451 [DC_ENDPIDX] = REG_FIELD(ISP1763_DC_EPINDEX, 1, 4), 452 [DC_EPDIR] = REG_FIELD(ISP1763_DC_EPINDEX, 0, 0), 453 [DC_CLBUF] = REG_FIELD(ISP1763_DC_CTRLFUNC, 4, 4), 454 [DC_VENDP] = REG_FIELD(ISP1763_DC_CTRLFUNC, 3, 3), 455 [DC_DSEN] = REG_FIELD(ISP1763_DC_CTRLFUNC, 2, 2), 456 [DC_STATUS] = REG_FIELD(ISP1763_DC_CTRLFUNC, 1, 1), 457 [DC_STALL] = REG_FIELD(ISP1763_DC_CTRLFUNC, 0, 0), 458 [DC_BUFLEN] = REG_FIELD(ISP1763_DC_BUFLEN, 0, 15), 459 [DC_FFOSZ] = REG_FIELD(ISP1763_DC_EPMAXPKTSZ, 0, 10), 460 [DC_EPENABLE] = REG_FIELD(ISP1763_DC_EPTYPE, 3, 3), 461 [DC_ENDPTYP] = REG_FIELD(ISP1763_DC_EPTYPE, 0, 1), 462 [DC_UFRAMENUM] = REG_FIELD(ISP1763_DC_FRAMENUM, 11, 13), 463 [DC_FRAMENUM] = REG_FIELD(ISP1763_DC_FRAMENUM, 0, 10), 464 [DC_CHIP_ID_HIGH] = REG_FIELD(ISP1763_DC_CHIPID_HIGH, 0, 15), 465 [DC_CHIP_ID_LOW] = REG_FIELD(ISP1763_DC_CHIPID_LOW, 0, 15), 466 [DC_SCRATCH] = REG_FIELD(ISP1763_DC_SCRATCH, 0, 15), 467 /* Make sure the array is sized properly during compilation */ 468 [DC_FIELD_MAX] = {}, 469}; 470 471static const struct regmap_config isp1763_dc_regmap_conf = { 472 .name = "isp1763-dc", 473 .reg_bits = 8, 474 .reg_stride = 2, 475 .val_bits = 16, 476 .fast_io = true, 477 .max_register = ISP1763_DC_TESTMODE, 478 .volatile_table = &isp1763_dc_volatile_table, 479}; 480 481int isp1760_register(struct resource *mem, int irq, unsigned long irqflags, 482 struct device *dev, unsigned int devflags) 483{ 484 const struct regmap_config *hc_regmap; 485 const struct reg_field *hc_reg_fields; 486 const struct regmap_config *dc_regmap; 487 const struct reg_field *dc_reg_fields; 488 struct isp1760_device *isp; 489 struct isp1760_hcd *hcd; 490 struct isp1760_udc *udc; 491 struct regmap_field *f; 492 bool udc_enabled; 493 int ret; 494 int i; 495 496 /* 497 * If neither the HCD not the UDC is enabled return an error, as no 498 * device would be registered. 499 */ 500 udc_enabled = ((devflags & ISP1760_FLAG_ISP1763) || 501 (devflags & ISP1760_FLAG_ISP1761)); 502 503 if ((!IS_ENABLED(CONFIG_USB_ISP1760_HCD) || usb_disabled()) && 504 (!udc_enabled || !IS_ENABLED(CONFIG_USB_ISP1761_UDC))) 505 return -ENODEV; 506 507 isp = devm_kzalloc(dev, sizeof(*isp), GFP_KERNEL); 508 if (!isp) 509 return -ENOMEM; 510 511 isp->dev = dev; 512 isp->devflags = devflags; 513 hcd = &isp->hcd; 514 udc = &isp->udc; 515 516 hcd->is_isp1763 = !!(devflags & ISP1760_FLAG_ISP1763); 517 udc->is_isp1763 = !!(devflags & ISP1760_FLAG_ISP1763); 518 519 if (!hcd->is_isp1763 && (devflags & ISP1760_FLAG_BUS_WIDTH_8)) { 520 dev_err(dev, "isp1760/61 do not support data width 8\n"); 521 return -EINVAL; 522 } 523 524 if (hcd->is_isp1763) { 525 hc_regmap = &isp1763_hc_regmap_conf; 526 hc_reg_fields = &isp1763_hc_reg_fields[0]; 527 dc_regmap = &isp1763_dc_regmap_conf; 528 dc_reg_fields = &isp1763_dc_reg_fields[0]; 529 } else { 530 hc_regmap = &isp1760_hc_regmap_conf; 531 hc_reg_fields = &isp1760_hc_reg_fields[0]; 532 dc_regmap = &isp1761_dc_regmap_conf; 533 dc_reg_fields = &isp1761_dc_reg_fields[0]; 534 } 535 536 isp->rst_gpio = devm_gpiod_get_optional(dev, NULL, GPIOD_OUT_HIGH); 537 if (IS_ERR(isp->rst_gpio)) 538 return PTR_ERR(isp->rst_gpio); 539 540 hcd->base = devm_ioremap_resource(dev, mem); 541 if (IS_ERR(hcd->base)) 542 return PTR_ERR(hcd->base); 543 544 hcd->regs = devm_regmap_init_mmio(dev, hcd->base, hc_regmap); 545 if (IS_ERR(hcd->regs)) 546 return PTR_ERR(hcd->regs); 547 548 for (i = 0; i < HC_FIELD_MAX; i++) { 549 f = devm_regmap_field_alloc(dev, hcd->regs, hc_reg_fields[i]); 550 if (IS_ERR(f)) 551 return PTR_ERR(f); 552 553 hcd->fields[i] = f; 554 } 555 556 udc->regs = devm_regmap_init_mmio(dev, hcd->base, dc_regmap); 557 if (IS_ERR(udc->regs)) 558 return PTR_ERR(udc->regs); 559 560 for (i = 0; i < DC_FIELD_MAX; i++) { 561 f = devm_regmap_field_alloc(dev, udc->regs, dc_reg_fields[i]); 562 if (IS_ERR(f)) 563 return PTR_ERR(f); 564 565 udc->fields[i] = f; 566 } 567 568 if (hcd->is_isp1763) 569 hcd->memory_layout = &isp1763_memory_conf; 570 else 571 hcd->memory_layout = &isp176x_memory_conf; 572 573 ret = isp1760_init_core(isp); 574 if (ret < 0) 575 return ret; 576 577 if (IS_ENABLED(CONFIG_USB_ISP1760_HCD) && !usb_disabled()) { 578 ret = isp1760_hcd_register(hcd, mem, irq, 579 irqflags | IRQF_SHARED, dev); 580 if (ret < 0) 581 return ret; 582 } 583 584 if (udc_enabled && IS_ENABLED(CONFIG_USB_ISP1761_UDC)) { 585 ret = isp1760_udc_register(isp, irq, irqflags); 586 if (ret < 0) { 587 isp1760_hcd_unregister(hcd); 588 return ret; 589 } 590 } 591 592 dev_set_drvdata(dev, isp); 593 594 return 0; 595} 596 597void isp1760_unregister(struct device *dev) 598{ 599 struct isp1760_device *isp = dev_get_drvdata(dev); 600 601 isp1760_udc_unregister(isp); 602 isp1760_hcd_unregister(&isp->hcd); 603} 604 605MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP"); 606MODULE_AUTHOR("Sebastian Siewior <bigeasy@linuxtronix.de>"); 607MODULE_LICENSE("GPL v2"); 608