drivers/staging/rtl8712/usb_halinit.c

   1 /******************************************************************************
   2  * usb_halinit.c
   3  *
   4  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
   5  * Linux device driver for RTL8192SU
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  19  *
  20  * Modifications for inclusion into the Linux staging tree are
  21  * Copyright(c) 2010 Larry Finger. All rights reserved.
  22  *
  23  * Contact information:
  24  * WLAN FAE <wlanfae@realtek.com>
  25  * Larry Finger <Larry.Finger@lwfinger.net>
  26  *
  27  ******************************************************************************/
  28
  29 #define _HCI_HAL_INIT_C_
  30
  31 #include "osdep_service.h"
  32 #include "drv_types.h"
  33 #include "usb_ops.h"
  34 #include "usb_osintf.h"
  35
  36 u8 r8712_usb_hal_bus_init(struct _adapter *padapter)
  37 {
  38         u8 val8 = 0;
  39         u8 ret = _SUCCESS;
  40         int PollingCnt = 20;
  41         struct registry_priv *pregistrypriv = &padapter->registrypriv;
  42
  43         if (pregistrypriv->chip_version == RTL8712_FPGA) {
  44                 val8 = 0x01;
  45                 /* switch to 80M clock */
  46                 r8712_write8(padapter, SYS_CLKR, val8);
  47                 val8 = r8712_read8(padapter, SPS1_CTRL);
  48                 val8 = val8 | 0x01;
  49                 /* enable VSPS12 LDO Macro block */
  50                 r8712_write8(padapter, SPS1_CTRL, val8);
  51                 val8 = r8712_read8(padapter, AFE_MISC);
  52                 val8 = val8 | 0x01;
  53                 /* Enable AFE Macro Block's Bandgap */
  54                 r8712_write8(padapter, AFE_MISC, val8);
  55                 val8 = r8712_read8(padapter, LDOA15_CTRL);
  56                 val8 = val8 | 0x01;
  57                 /* enable LDOA15 block */
  58                 r8712_write8(padapter, LDOA15_CTRL, val8);
  59                 val8 = r8712_read8(padapter, SPS1_CTRL);
  60                 val8 = val8 | 0x02;
  61                 /* Enable VSPS12_SW Macro Block */
  62                 r8712_write8(padapter, SPS1_CTRL, val8);
  63                 val8 = r8712_read8(padapter, AFE_MISC);
  64                 val8 = val8 | 0x02;
  65                 /* Enable AFE Macro Block's Mbias */
  66                 r8712_write8(padapter, AFE_MISC, val8);
  67                 val8 = r8712_read8(padapter, SYS_ISO_CTRL + 1);
  68                 val8 = val8 | 0x08;
  69                 /* isolate PCIe Analog 1.2V to PCIe 3.3V and PCIE Digital */
  70                 r8712_write8(padapter, SYS_ISO_CTRL + 1, val8);
  71                 val8 = r8712_read8(padapter, SYS_ISO_CTRL + 1);
  72                 val8 = val8 & 0xEF;
  73                 /* attatch AFE PLL to MACTOP/BB/PCIe Digital */
  74                 r8712_write8(padapter, SYS_ISO_CTRL + 1, val8);
  75                 val8 = r8712_read8(padapter, AFE_XTAL_CTRL + 1);
  76                 val8 = val8 & 0xFB;
  77                 /* enable AFE clock */
  78                 r8712_write8(padapter, AFE_XTAL_CTRL + 1, val8);
  79                 val8 = r8712_read8(padapter, AFE_PLL_CTRL);
  80                 val8 = val8 | 0x01;
  81                 /* Enable AFE PLL Macro Block */
  82                 r8712_write8(padapter, AFE_PLL_CTRL, val8);
  83                 val8 = 0xEE;
  84                 /* release isolation AFE PLL & MD */
  85                 r8712_write8(padapter, SYS_ISO_CTRL, val8);
  86                 val8 = r8712_read8(padapter, SYS_CLKR + 1);
  87                 val8 = val8 | 0x08;
  88                 /* enable MAC clock */
  89                 r8712_write8(padapter, SYS_CLKR + 1, val8);
  90                 val8 = r8712_read8(padapter, SYS_FUNC_EN + 1);
  91                 val8 = val8 | 0x08;
  92                 /* enable Core digital and enable IOREG R/W */
  93                 r8712_write8(padapter, SYS_FUNC_EN + 1, val8);
  94                 val8 = val8 | 0x80;
  95                 /* enable REG_EN */
  96                 r8712_write8(padapter, SYS_FUNC_EN + 1, val8);
  97                 val8 = r8712_read8(padapter, SYS_CLKR + 1);
  98                 val8 = (val8 | 0x80) & 0xBF;
  99                 /* switch the control path */
 100                 r8712_write8(padapter, SYS_CLKR + 1, val8);
 101                 val8 = 0xFC;
 102                 r8712_write8(padapter, CR, val8);
 103                 val8 = 0x37;
 104                 r8712_write8(padapter, CR + 1, val8);
 105                 /* reduce EndPoint & init it */
 106                 r8712_write8(padapter, 0x102500ab, r8712_read8(padapter,
 107                              0x102500ab) | BIT(6) | BIT(7));
 108                 /* consideration of power consumption - init */
 109                 r8712_write8(padapter, 0x10250008, r8712_read8(padapter,
 110                              0x10250008) & 0xfffffffb);
 111         } else if (pregistrypriv->chip_version == RTL8712_1stCUT) {
 112                 /* Initialization for power on sequence, */
 113                 r8712_write8(padapter, SPS0_CTRL + 1, 0x53);
 114                 r8712_write8(padapter, SPS0_CTRL, 0x57);
 115                 /* Enable AFE Macro Block's Bandgap and Enable AFE Macro
 116                  * Block's Mbias
 117                  */
 118                 val8 = r8712_read8(padapter, AFE_MISC);
 119                 r8712_write8(padapter, AFE_MISC, (val8 | AFE_MISC_BGEN |
 120                              AFE_MISC_MBEN));
 121                 /* Enable LDOA15 block */
 122                 val8 = r8712_read8(padapter, LDOA15_CTRL);
 123                 r8712_write8(padapter, LDOA15_CTRL, (val8 | LDA15_EN));
 124                 val8 = r8712_read8(padapter, SPS1_CTRL);
 125                 r8712_write8(padapter, SPS1_CTRL, (val8 | SPS1_LDEN));
 126                 msleep(20);
 127                 /* Enable Switch Regulator Block */
 128                 val8 = r8712_read8(padapter, SPS1_CTRL);
 129                 r8712_write8(padapter, SPS1_CTRL, (val8 | SPS1_SWEN));
 130                 r8712_write32(padapter, SPS1_CTRL, 0x00a7b267);
 131                 val8 = r8712_read8(padapter, SYS_ISO_CTRL + 1);
 132                 r8712_write8(padapter, SYS_ISO_CTRL + 1, (val8 | 0x08));
 133                 /* Engineer Packet CP test Enable */
 134                 val8 = r8712_read8(padapter, SYS_FUNC_EN + 1);
 135                 r8712_write8(padapter, SYS_FUNC_EN + 1, (val8 | 0x20));
 136                 val8 = r8712_read8(padapter, SYS_ISO_CTRL + 1);
 137                 r8712_write8(padapter, SYS_ISO_CTRL + 1, (val8 & 0x6F));
 138                 /* Enable AFE clock */
 139                 val8 = r8712_read8(padapter, AFE_XTAL_CTRL + 1);
 140                 r8712_write8(padapter, AFE_XTAL_CTRL + 1, (val8 & 0xfb));
 141                 /* Enable AFE PLL Macro Block */
 142                 val8 = r8712_read8(padapter, AFE_PLL_CTRL);
 143                 r8712_write8(padapter, AFE_PLL_CTRL, (val8 | 0x11));
 144                 /* Attach AFE PLL to MACTOP/BB/PCIe Digital */
 145                 val8 = r8712_read8(padapter, SYS_ISO_CTRL);
 146                 r8712_write8(padapter, SYS_ISO_CTRL, (val8 & 0xEE));
 147                 /* Switch to 40M clock */
 148                 val8 = r8712_read8(padapter, SYS_CLKR);
 149                 r8712_write8(padapter, SYS_CLKR, val8 & (~SYS_CLKSEL));
 150                 /* SSC Disable */
 151                 val8 = r8712_read8(padapter, SYS_CLKR);
 152                 /* Enable MAC clock */
 153                 val8 = r8712_read8(padapter, SYS_CLKR + 1);
 154                 r8712_write8(padapter, SYS_CLKR + 1, (val8 | 0x18));
 155                 /* Revised POS, */
 156                 r8712_write8(padapter, PMC_FSM, 0x02);
 157                 /* Enable Core digital and enable IOREG R/W */
 158                 val8 = r8712_read8(padapter, SYS_FUNC_EN + 1);
 159                 r8712_write8(padapter, SYS_FUNC_EN + 1, (val8 | 0x08));
 160                 /* Enable REG_EN */
 161                 val8 = r8712_read8(padapter, SYS_FUNC_EN + 1);
 162                 r8712_write8(padapter, SYS_FUNC_EN + 1, (val8 | 0x80));
 163                 /* Switch the control path to FW */
 164                 val8 = r8712_read8(padapter, SYS_CLKR + 1);
 165                 r8712_write8(padapter, SYS_CLKR + 1, (val8 | 0x80) & 0xBF);
 166                 r8712_write8(padapter, CR, 0xFC);
 167                 r8712_write8(padapter, CR + 1, 0x37);
 168                 /* Fix the RX FIFO issue(usb error), */
 169                 val8 = r8712_read8(padapter, 0x1025FE5c);
 170                 r8712_write8(padapter, 0x1025FE5c, (val8 | BIT(7)));
 171                 val8 = r8712_read8(padapter, 0x102500ab);
 172                 r8712_write8(padapter, 0x102500ab, (val8 | BIT(6) | BIT(7)));
 173                 /* For power save, used this in the bit file after 970621 */
 174                 val8 = r8712_read8(padapter, SYS_CLKR);
 175                 r8712_write8(padapter, SYS_CLKR, val8 & (~CPU_CLKSEL));
 176         } else if (pregistrypriv->chip_version == RTL8712_2ndCUT ||
 177                   pregistrypriv->chip_version == RTL8712_3rdCUT) {
 178                 /* Initialization for power on sequence,
 179                  * E-Fuse leakage prevention sequence
 180                  */
 181                 r8712_write8(padapter, 0x37, 0xb0);
 182                 msleep(20);
 183                 r8712_write8(padapter, 0x37, 0x30);
 184                 /* Set control path switch to HW control and reset Digital Core,
 185                  * CPU Core and MAC I/O to solve FW download fail when system
 186                  * from resume sate.
 187                  */
 188                 val8 = r8712_read8(padapter, SYS_CLKR + 1);
 189                 if (val8 & 0x80) {
 190                         val8 &= 0x3f;
 191                         r8712_write8(padapter, SYS_CLKR + 1, val8);
 192                 }
 193                 val8 = r8712_read8(padapter, SYS_FUNC_EN + 1);
 194                 val8 &= 0x73;
 195                 r8712_write8(padapter, SYS_FUNC_EN + 1, val8);
 196                 msleep(20);
 197                 /* Revised POS, */
 198                 /* Enable AFE Macro Block's Bandgap and Enable AFE Macro
 199                  * Block's Mbias
 200                  */
 201                 r8712_write8(padapter, SPS0_CTRL + 1, 0x53);
 202                 r8712_write8(padapter, SPS0_CTRL, 0x57);
 203                 val8 = r8712_read8(padapter, AFE_MISC);
 204                 /*Bandgap*/
 205                 r8712_write8(padapter, AFE_MISC, (val8 | AFE_MISC_BGEN));
 206                 r8712_write8(padapter, AFE_MISC, (val8 | AFE_MISC_BGEN |
 207                              AFE_MISC_MBEN | AFE_MISC_I32_EN));
 208                 /* Enable PLL Power (LDOA15V) */
 209                 val8 = r8712_read8(padapter, LDOA15_CTRL);
 210                 r8712_write8(padapter, LDOA15_CTRL, (val8 | LDA15_EN));
 211                 /* Enable LDOV12D block */
 212                 val8 = r8712_read8(padapter, LDOV12D_CTRL);
 213                 r8712_write8(padapter, LDOV12D_CTRL, (val8 | LDV12_EN));
 214                 val8 = r8712_read8(padapter, SYS_ISO_CTRL + 1);
 215                 r8712_write8(padapter, SYS_ISO_CTRL + 1, (val8 | 0x08));
 216                 /* Engineer Packet CP test Enable */
 217                 val8 = r8712_read8(padapter, SYS_FUNC_EN + 1);
 218                 r8712_write8(padapter, SYS_FUNC_EN + 1, (val8 | 0x20));
 219                 /* Support 64k IMEM */
 220                 val8 = r8712_read8(padapter, SYS_ISO_CTRL + 1);
 221                 r8712_write8(padapter, SYS_ISO_CTRL + 1, (val8 & 0x68));
 222                 /* Enable AFE clock */
 223                 val8 = r8712_read8(padapter, AFE_XTAL_CTRL + 1);
 224                 r8712_write8(padapter, AFE_XTAL_CTRL + 1, (val8 & 0xfb));
 225                 /* Enable AFE PLL Macro Block */
 226                 val8 = r8712_read8(padapter, AFE_PLL_CTRL);
 227                 r8712_write8(padapter, AFE_PLL_CTRL, (val8 | 0x11));
 228                 /* Some sample will download fw failure. The clock will be
 229                  * stable with 500 us delay after reset the PLL
 230                  * TODO: When usleep is added to kernel, change next 3
 231                  * udelay(500) to usleep(500)
 232                  */
 233                 udelay(500);
 234                 r8712_write8(padapter, AFE_PLL_CTRL, (val8 | 0x51));
 235                 udelay(500);
 236                 r8712_write8(padapter, AFE_PLL_CTRL, (val8 | 0x11));
 237                 udelay(500);
 238                 /* Attach AFE PLL to MACTOP/BB/PCIe Digital */
 239                 val8 = r8712_read8(padapter, SYS_ISO_CTRL);
 240                 r8712_write8(padapter, SYS_ISO_CTRL, (val8 & 0xEE));
 241                 /* Switch to 40M clock */
 242                 r8712_write8(padapter, SYS_CLKR, 0x00);
 243                 /* CPU Clock and 80M Clock SSC Disable to overcome FW download
 244                  * fail timing issue.
 245                  */
 246                 val8 = r8712_read8(padapter, SYS_CLKR);
 247                 r8712_write8(padapter, SYS_CLKR, (val8 | 0xa0));
 248                 /* Enable MAC clock */
 249                 val8 = r8712_read8(padapter, SYS_CLKR + 1);
 250                 r8712_write8(padapter, SYS_CLKR + 1, (val8 | 0x18));
 251                 /* Revised POS, */
 252                 r8712_write8(padapter, PMC_FSM, 0x02);
 253                 /* Enable Core digital and enable IOREG R/W */
 254                 val8 = r8712_read8(padapter, SYS_FUNC_EN + 1);
 255                 r8712_write8(padapter, SYS_FUNC_EN + 1, (val8 | 0x08));
 256                 /* Enable REG_EN */
 257                 val8 = r8712_read8(padapter, SYS_FUNC_EN + 1);
 258                 r8712_write8(padapter, SYS_FUNC_EN + 1, (val8 | 0x80));
 259                 /* Switch the control path to FW */
 260                 val8 = r8712_read8(padapter, SYS_CLKR + 1);
 261                 r8712_write8(padapter, SYS_CLKR + 1, (val8 | 0x80) & 0xBF);
 262                 r8712_write8(padapter, CR, 0xFC);
 263                 r8712_write8(padapter, CR + 1, 0x37);
 264                 /* Fix the RX FIFO issue(usb error), 970410 */
 265                 val8 = r8712_read8(padapter, 0x1025FE5c);
 266                 r8712_write8(padapter, 0x1025FE5c, (val8 | BIT(7)));
 267                 /* For power save, used this in the bit file after 970621 */
 268                 val8 = r8712_read8(padapter, SYS_CLKR);
 269                 r8712_write8(padapter, SYS_CLKR, val8 & (~CPU_CLKSEL));
 270                 /* Revised for 8051 ROM code wrong operation. */
 271                 r8712_write8(padapter, 0x1025fe1c, 0x80);
 272                 /* To make sure that TxDMA can ready to download FW.
 273                  * We should reset TxDMA if IMEM RPT was not ready.
 274                  */
 275                 do {
 276                         val8 = r8712_read8(padapter, TCR);
 277                         if ((val8 & _TXDMA_INIT_VALUE) == _TXDMA_INIT_VALUE)
 278                                 break;
 279                         udelay(5); /* PlatformStallExecution(5); */
 280                 } while (PollingCnt--); /* Delay 1ms */
 281
 282                 if (PollingCnt <= 0) {
 283                         val8 = r8712_read8(padapter, CR);
 284                         r8712_write8(padapter, CR, val8 & (~_TXDMA_EN));
 285                         udelay(2); /* PlatformStallExecution(2); */
 286                         /* Reset TxDMA */
 287                         r8712_write8(padapter, CR, val8 | _TXDMA_EN);
 288                 }
 289         } else {
 290                 ret = _FAIL;
 291         }
 292         return ret;
 293 }
 294
 295 unsigned int r8712_usb_inirp_init(struct _adapter *padapter)
 296 {
 297         u8 i;
 298         struct recv_buf *precvbuf;
 299         struct intf_hdl *pintfhdl = &padapter->pio_queue->intf;
 300         struct recv_priv *precvpriv = &(padapter->recvpriv);
 301
 302         precvpriv->ff_hwaddr = RTL8712_DMA_RX0FF; /* mapping rx fifo address */
 303         /* issue Rx irp to receive data */
 304         precvbuf = (struct recv_buf *)precvpriv->precv_buf;
 305         for (i = 0; i < NR_RECVBUFF; i++) {
 306                 if (r8712_usb_read_port(pintfhdl, precvpriv->ff_hwaddr, 0,
 307                    (unsigned char *)precvbuf) == false)
 308                         return _FAIL;
 309                 precvbuf++;
 310                 precvpriv->free_recv_buf_queue_cnt--;
 311         }
 312         return _SUCCESS;
 313 }
 314
 315 unsigned int r8712_usb_inirp_deinit(struct _adapter *padapter)
 316 {
 317         r8712_usb_read_port_cancel(padapter);
 318         return _SUCCESS;
 319 }