drivers/staging/rtl8712/usb_halinit.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /******************************************************************************
   3  * usb_halinit.c
   4  *
   5  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
   6  * Linux device driver for RTL8192SU
   7  *
   8  * Modifications for inclusion into the Linux staging tree are
   9  * Copyright(c) 2010 Larry Finger. All rights reserved.
  10  *
  11  * Contact information:
  12  * WLAN FAE <[email protected]>
  13  * Larry Finger <[email protected]>
  14  *
  15  ******************************************************************************/
  16
  17 #define _HCI_HAL_INIT_C_
  18
  19 #include "osdep_service.h"
  20 #include "drv_types.h"
  21 #include "usb_ops.h"
  22 #include "usb_osintf.h"
  23
  24 u8 r8712_usb_hal_bus_init(struct _adapter *adapter)
  25 {
  26         u8 val8 = 0;
  27         u8 ret = _SUCCESS;
  28         int PollingCnt = 20;
  29         struct registry_priv *registrypriv = &adapter->registrypriv;
  30
  31         if (registrypriv->chip_version == RTL8712_FPGA) {
  32                 val8 = 0x01;
  33                 /* switch to 80M clock */
  34                 r8712_write8(adapter, SYS_CLKR, val8);
  35                 val8 = r8712_read8(adapter, SPS1_CTRL);
  36                 val8 = val8 | 0x01;
  37                 /* enable VSPS12 LDO Macro block */
  38                 r8712_write8(adapter, SPS1_CTRL, val8);
  39                 val8 = r8712_read8(adapter, AFE_MISC);
  40                 val8 = val8 | 0x01;
  41                 /* Enable AFE Macro Block's Bandgap */
  42                 r8712_write8(adapter, AFE_MISC, val8);
  43                 val8 = r8712_read8(adapter, LDOA15_CTRL);
  44                 val8 = val8 | 0x01;
  45                 /* enable LDOA15 block */
  46                 r8712_write8(adapter, LDOA15_CTRL, val8);
  47                 val8 = r8712_read8(adapter, SPS1_CTRL);
  48                 val8 = val8 | 0x02;
  49                 /* Enable VSPS12_SW Macro Block */
  50                 r8712_write8(adapter, SPS1_CTRL, val8);
  51                 val8 = r8712_read8(adapter, AFE_MISC);
  52                 val8 = val8 | 0x02;
  53                 /* Enable AFE Macro Block's Mbias */
  54                 r8712_write8(adapter, AFE_MISC, val8);
  55                 val8 = r8712_read8(adapter, SYS_ISO_CTRL + 1);
  56                 val8 = val8 | 0x08;
  57                 /* isolate PCIe Analog 1.2V to PCIe 3.3V and PCIE Digital */
  58                 r8712_write8(adapter, SYS_ISO_CTRL + 1, val8);
  59                 val8 = r8712_read8(adapter, SYS_ISO_CTRL + 1);
  60                 val8 = val8 & 0xEF;
  61                 /* attach AFE PLL to MACTOP/BB/PCIe Digital */
  62                 r8712_write8(adapter, SYS_ISO_CTRL + 1, val8);
  63                 val8 = r8712_read8(adapter, AFE_XTAL_CTRL + 1);
  64                 val8 = val8 & 0xFB;
  65                 /* enable AFE clock */
  66                 r8712_write8(adapter, AFE_XTAL_CTRL + 1, val8);
  67                 val8 = r8712_read8(adapter, AFE_PLL_CTRL);
  68                 val8 = val8 | 0x01;
  69                 /* Enable AFE PLL Macro Block */
  70                 r8712_write8(adapter, AFE_PLL_CTRL, val8);
  71                 val8 = 0xEE;
  72                 /* release isolation AFE PLL & MD */
  73                 r8712_write8(adapter, SYS_ISO_CTRL, val8);
  74                 val8 = r8712_read8(adapter, SYS_CLKR + 1);
  75                 val8 = val8 | 0x08;
  76                 /* enable MAC clock */
  77                 r8712_write8(adapter, SYS_CLKR + 1, val8);
  78                 val8 = r8712_read8(adapter, SYS_FUNC_EN + 1);
  79                 val8 = val8 | 0x08;
  80                 /* enable Core digital and enable IOREG R/W */
  81                 r8712_write8(adapter, SYS_FUNC_EN + 1, val8);
  82                 val8 = val8 | 0x80;
  83                 /* enable REG_EN */
  84                 r8712_write8(adapter, SYS_FUNC_EN + 1, val8);
  85                 val8 = r8712_read8(adapter, SYS_CLKR + 1);
  86                 val8 = (val8 | 0x80) & 0xBF;
  87                 /* switch the control path */
  88                 r8712_write8(adapter, SYS_CLKR + 1, val8);
  89                 val8 = 0xFC;
  90                 r8712_write8(adapter, CR, val8);
  91                 val8 = 0x37;
  92                 r8712_write8(adapter, CR + 1, val8);
  93                 /* reduce EndPoint & init it */
  94                 r8712_write8(adapter, 0x102500ab, r8712_read8(adapter,
  95                              0x102500ab) | BIT(6) | BIT(7));
  96                 /* consideration of power consumption - init */
  97                 r8712_write8(adapter, 0x10250008, r8712_read8(adapter,
  98                              0x10250008) & 0xfffffffb);
  99         } else if (registrypriv->chip_version == RTL8712_1stCUT) {
 100                 /* Initialization for power on sequence, */
 101                 r8712_write8(adapter, SPS0_CTRL + 1, 0x53);
 102                 r8712_write8(adapter, SPS0_CTRL, 0x57);
 103                 /* Enable AFE Macro Block's Bandgap and Enable AFE Macro
 104                  * Block's Mbias
 105                  */
 106                 val8 = r8712_read8(adapter, AFE_MISC);
 107                 r8712_write8(adapter, AFE_MISC, (val8 | AFE_MISC_BGEN |
 108                              AFE_MISC_MBEN));
 109                 /* Enable LDOA15 block */
 110                 val8 = r8712_read8(adapter, LDOA15_CTRL);
 111                 r8712_write8(adapter, LDOA15_CTRL, (val8 | LDA15_EN));
 112                 val8 = r8712_read8(adapter, SPS1_CTRL);
 113                 r8712_write8(adapter, SPS1_CTRL, (val8 | SPS1_LDEN));
 114                 msleep(20);
 115                 /* Enable Switch Regulator Block */
 116                 val8 = r8712_read8(adapter, SPS1_CTRL);
 117                 r8712_write8(adapter, SPS1_CTRL, (val8 | SPS1_SWEN));
 118                 r8712_write32(adapter, SPS1_CTRL, 0x00a7b267);
 119                 val8 = r8712_read8(adapter, SYS_ISO_CTRL + 1);
 120                 r8712_write8(adapter, SYS_ISO_CTRL + 1, (val8 | 0x08));
 121                 /* Engineer Packet CP test Enable */
 122                 val8 = r8712_read8(adapter, SYS_FUNC_EN + 1);
 123                 r8712_write8(adapter, SYS_FUNC_EN + 1, (val8 | 0x20));
 124                 val8 = r8712_read8(adapter, SYS_ISO_CTRL + 1);
 125                 r8712_write8(adapter, SYS_ISO_CTRL + 1, (val8 & 0x6F));
 126                 /* Enable AFE clock */
 127                 val8 = r8712_read8(adapter, AFE_XTAL_CTRL + 1);
 128                 r8712_write8(adapter, AFE_XTAL_CTRL + 1, (val8 & 0xfb));
 129                 /* Enable AFE PLL Macro Block */
 130                 val8 = r8712_read8(adapter, AFE_PLL_CTRL);
 131                 r8712_write8(adapter, AFE_PLL_CTRL, (val8 | 0x11));
 132                 /* Attach AFE PLL to MACTOP/BB/PCIe Digital */
 133                 val8 = r8712_read8(adapter, SYS_ISO_CTRL);
 134                 r8712_write8(adapter, SYS_ISO_CTRL, (val8 & 0xEE));
 135                 /* Switch to 40M clock */
 136                 val8 = r8712_read8(adapter, SYS_CLKR);
 137                 r8712_write8(adapter, SYS_CLKR, val8 & (~SYS_CLKSEL));
 138                 /* SSC Disable */
 139                 val8 = r8712_read8(adapter, SYS_CLKR);
 140                 /* Enable MAC clock */
 141                 val8 = r8712_read8(adapter, SYS_CLKR + 1);
 142                 r8712_write8(adapter, SYS_CLKR + 1, (val8 | 0x18));
 143                 /* Revised POS, */
 144                 r8712_write8(adapter, PMC_FSM, 0x02);
 145                 /* Enable Core digital and enable IOREG R/W */
 146                 val8 = r8712_read8(adapter, SYS_FUNC_EN + 1);
 147                 r8712_write8(adapter, SYS_FUNC_EN + 1, (val8 | 0x08));
 148                 /* Enable REG_EN */
 149                 val8 = r8712_read8(adapter, SYS_FUNC_EN + 1);
 150                 r8712_write8(adapter, SYS_FUNC_EN + 1, (val8 | 0x80));
 151                 /* Switch the control path to FW */
 152                 val8 = r8712_read8(adapter, SYS_CLKR + 1);
 153                 r8712_write8(adapter, SYS_CLKR + 1, (val8 | 0x80) & 0xBF);
 154                 r8712_write8(adapter, CR, 0xFC);
 155                 r8712_write8(adapter, CR + 1, 0x37);
 156                 /* Fix the RX FIFO issue(usb error), */
 157                 val8 = r8712_read8(adapter, 0x1025FE5c);
 158                 r8712_write8(adapter, 0x1025FE5c, (val8 | BIT(7)));
 159                 val8 = r8712_read8(adapter, 0x102500ab);
 160                 r8712_write8(adapter, 0x102500ab, (val8 | BIT(6) | BIT(7)));
 161                 /* For power save, used this in the bit file after 970621 */
 162                 val8 = r8712_read8(adapter, SYS_CLKR);
 163                 r8712_write8(adapter, SYS_CLKR, val8 & (~CPU_CLKSEL));
 164         } else if (registrypriv->chip_version == RTL8712_2ndCUT ||
 165                    registrypriv->chip_version == RTL8712_3rdCUT) {
 166                 /* Initialization for power on sequence,
 167                  * E-Fuse leakage prevention sequence
 168                  */
 169                 r8712_write8(adapter, 0x37, 0xb0);
 170                 msleep(20);
 171                 r8712_write8(adapter, 0x37, 0x30);
 172                 /* Set control path switch to HW control and reset Digital Core,
 173                  * CPU Core and MAC I/O to solve FW download fail when system
 174                  * from resume sate.
 175                  */
 176                 val8 = r8712_read8(adapter, SYS_CLKR + 1);
 177                 if (val8 & 0x80) {
 178                         val8 &= 0x3f;
 179                         r8712_write8(adapter, SYS_CLKR + 1, val8);
 180                 }
 181                 val8 = r8712_read8(adapter, SYS_FUNC_EN + 1);
 182                 val8 &= 0x73;
 183                 r8712_write8(adapter, SYS_FUNC_EN + 1, val8);
 184                 msleep(20);
 185                 /* Revised POS, */
 186                 /* Enable AFE Macro Block's Bandgap and Enable AFE Macro
 187                  * Block's Mbias
 188                  */
 189                 r8712_write8(adapter, SPS0_CTRL + 1, 0x53);
 190                 r8712_write8(adapter, SPS0_CTRL, 0x57);
 191                 val8 = r8712_read8(adapter, AFE_MISC);
 192                 /*Bandgap*/
 193                 r8712_write8(adapter, AFE_MISC, (val8 | AFE_MISC_BGEN));
 194                 r8712_write8(adapter, AFE_MISC, (val8 | AFE_MISC_BGEN |
 195                              AFE_MISC_MBEN | AFE_MISC_I32_EN));
 196                 /* Enable PLL Power (LDOA15V) */
 197                 val8 = r8712_read8(adapter, LDOA15_CTRL);
 198                 r8712_write8(adapter, LDOA15_CTRL, (val8 | LDA15_EN));
 199                 /* Enable LDOV12D block */
 200                 val8 = r8712_read8(adapter, LDOV12D_CTRL);
 201                 r8712_write8(adapter, LDOV12D_CTRL, (val8 | LDV12_EN));
 202                 val8 = r8712_read8(adapter, SYS_ISO_CTRL + 1);
 203                 r8712_write8(adapter, SYS_ISO_CTRL + 1, (val8 | 0x08));
 204                 /* Engineer Packet CP test Enable */
 205                 val8 = r8712_read8(adapter, SYS_FUNC_EN + 1);
 206                 r8712_write8(adapter, SYS_FUNC_EN + 1, (val8 | 0x20));
 207                 /* Support 64k IMEM */
 208                 val8 = r8712_read8(adapter, SYS_ISO_CTRL + 1);
 209                 r8712_write8(adapter, SYS_ISO_CTRL + 1, (val8 & 0x68));
 210                 /* Enable AFE clock */
 211                 val8 = r8712_read8(adapter, AFE_XTAL_CTRL + 1);
 212                 r8712_write8(adapter, AFE_XTAL_CTRL + 1, (val8 & 0xfb));
 213                 /* Enable AFE PLL Macro Block */
 214                 val8 = r8712_read8(adapter, AFE_PLL_CTRL);
 215                 r8712_write8(adapter, AFE_PLL_CTRL, (val8 | 0x11));
 216                 /* Some sample will download fw failure. The clock will be
 217                  * stable with 500 us delay after reset the PLL
 218                  * TODO: When usleep is added to kernel, change next 3
 219                  * udelay(500) to usleep(500)
 220                  */
 221                 udelay(500);
 222                 r8712_write8(adapter, AFE_PLL_CTRL, (val8 | 0x51));
 223                 udelay(500);
 224                 r8712_write8(adapter, AFE_PLL_CTRL, (val8 | 0x11));
 225                 udelay(500);
 226                 /* Attach AFE PLL to MACTOP/BB/PCIe Digital */
 227                 val8 = r8712_read8(adapter, SYS_ISO_CTRL);
 228                 r8712_write8(adapter, SYS_ISO_CTRL, (val8 & 0xEE));
 229                 /* Switch to 40M clock */
 230                 r8712_write8(adapter, SYS_CLKR, 0x00);
 231                 /* CPU Clock and 80M Clock SSC Disable to overcome FW download
 232                  * fail timing issue.
 233                  */
 234                 val8 = r8712_read8(adapter, SYS_CLKR);
 235                 r8712_write8(adapter, SYS_CLKR, (val8 | 0xa0));
 236                 /* Enable MAC clock */
 237                 val8 = r8712_read8(adapter, SYS_CLKR + 1);
 238                 r8712_write8(adapter, SYS_CLKR + 1, (val8 | 0x18));
 239                 /* Revised POS, */
 240                 r8712_write8(adapter, PMC_FSM, 0x02);
 241                 /* Enable Core digital and enable IOREG R/W */
 242                 val8 = r8712_read8(adapter, SYS_FUNC_EN + 1);
 243                 r8712_write8(adapter, SYS_FUNC_EN + 1, (val8 | 0x08));
 244                 /* Enable REG_EN */
 245                 val8 = r8712_read8(adapter, SYS_FUNC_EN + 1);
 246                 r8712_write8(adapter, SYS_FUNC_EN + 1, (val8 | 0x80));
 247                 /* Switch the control path to FW */
 248                 val8 = r8712_read8(adapter, SYS_CLKR + 1);
 249                 r8712_write8(adapter, SYS_CLKR + 1, (val8 | 0x80) & 0xBF);
 250                 r8712_write8(adapter, CR, 0xFC);
 251                 r8712_write8(adapter, CR + 1, 0x37);
 252                 /* Fix the RX FIFO issue(usb error), 970410 */
 253                 val8 = r8712_read8(adapter, 0x1025FE5c);
 254                 r8712_write8(adapter, 0x1025FE5c, (val8 | BIT(7)));
 255                 /* For power save, used this in the bit file after 970621 */
 256                 val8 = r8712_read8(adapter, SYS_CLKR);
 257                 r8712_write8(adapter, SYS_CLKR, val8 & (~CPU_CLKSEL));
 258                 /* Revised for 8051 ROM code wrong operation. */
 259                 r8712_write8(adapter, 0x1025fe1c, 0x80);
 260                 /* To make sure that TxDMA can ready to download FW.
 261                  * We should reset TxDMA if IMEM RPT was not ready.
 262                  */
 263                 do {
 264                         val8 = r8712_read8(adapter, TCR);
 265                         if ((val8 & _TXDMA_INIT_VALUE) == _TXDMA_INIT_VALUE)
 266                                 break;
 267                         udelay(5); /* PlatformStallExecution(5); */
 268                 } while (PollingCnt--); /* Delay 1ms */
 269
 270                 if (PollingCnt <= 0) {
 271                         val8 = r8712_read8(adapter, CR);
 272                         r8712_write8(adapter, CR, val8 & (~_TXDMA_EN));
 273                         udelay(2); /* PlatformStallExecution(2); */
 274                         /* Reset TxDMA */
 275                         r8712_write8(adapter, CR, val8 | _TXDMA_EN);
 276                 }
 277         } else {
 278                 ret = _FAIL;
 279         }
 280         return ret;
 281 }
 282
 283 unsigned int r8712_usb_inirp_init(struct _adapter *adapter)
 284 {
 285         u8 i;
 286         struct recv_buf *recvbuf;
 287         struct intf_hdl *intfhdl = &adapter->pio_queue->intf;
 288         struct recv_priv *recvpriv = &(adapter->recvpriv);
 289
 290         recvpriv->ff_hwaddr = RTL8712_DMA_RX0FF; /* mapping rx fifo address */
 291         /* issue Rx irp to receive data */
 292         recvbuf = (struct recv_buf *)recvpriv->precv_buf;
 293         for (i = 0; i < NR_RECVBUFF; i++) {
 294                 if (r8712_usb_read_port(intfhdl, recvpriv->ff_hwaddr, 0,
 295                                         (unsigned char *)recvbuf) == false)
 296                         return _FAIL;
 297                 recvbuf++;
 298                 recvpriv->free_recv_buf_queue_cnt--;
 299         }
 300         return _SUCCESS;
 301 }
 302
 303 unsigned int r8712_usb_inirp_deinit(struct _adapter *adapter)
 304 {
 305         r8712_usb_read_port_cancel(adapter);
 306         return _SUCCESS;
 307 }