drivers/media/pci/mantis/hopper_cards.c

   1 /*
   2         Hopper PCI bridge driver
   3
   4         Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   5
   6         This program is free software; you can redistribute it and/or modify
   7         it under the terms of the GNU General Public License as published by
   8         the Free Software Foundation; either version 2 of the License, or
   9         (at your option) any later version.
  10
  11         This program is distributed in the hope that it will be useful,
  12         but WITHOUT ANY WARRANTY; without even the implied warranty of
  13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14         GNU General Public License for more details.
  15
  16         You should have received a copy of the GNU General Public License
  17         along with this program; if not, write to the Free Software
  18         Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include <linux/module.h>
  22 #include <linux/moduleparam.h>
  23 #include <linux/kernel.h>
  24 #include <linux/pci.h>
  25 #include <linux/slab.h>
  26 #include <asm/irq.h>
  27 #include <linux/interrupt.h>
  28
  29 #include "dmxdev.h"
  30 #include "dvbdev.h"
  31 #include "dvb_demux.h"
  32 #include "dvb_frontend.h"
  33 #include "dvb_net.h"
  34
  35 #include "mantis_common.h"
  36 #include "hopper_vp3028.h"
  37 #include "mantis_dma.h"
  38 #include "mantis_dvb.h"
  39 #include "mantis_uart.h"
  40 #include "mantis_ioc.h"
  41 #include "mantis_pci.h"
  42 #include "mantis_i2c.h"
  43 #include "mantis_reg.h"
  44
  45 static unsigned int verbose;
  46 module_param(verbose, int, 0644);
  47 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");
  48
  49 #define DRIVER_NAME     "Hopper"
  50
  51 static char *label[10] = {
  52         "DMA",
  53         "IRQ-0",
  54         "IRQ-1",
  55         "OCERR",
  56         "PABRT",
  57         "RIPRR",
  58         "PPERR",
  59         "FTRGT",
  60         "RISCI",
  61         "RACK"
  62 };
  63
  64 static int devs;
  65
  66 static irqreturn_t hopper_irq_handler(int irq, void *dev_id)
  67 {
  68         u32 stat = 0, mask = 0;
  69         u32 rst_stat = 0, rst_mask = 0;
  70
  71         struct mantis_pci *mantis;
  72         struct mantis_ca *ca;
  73
  74         mantis = (struct mantis_pci *) dev_id;
  75         if (unlikely(mantis == NULL)) {
  76                 dprintk(MANTIS_ERROR, 1, "Mantis == NULL");
  77                 return IRQ_NONE;
  78         }
  79         ca = mantis->mantis_ca;
  80
  81         stat = mmread(MANTIS_INT_STAT);
  82         mask = mmread(MANTIS_INT_MASK);
  83         if (!(stat & mask))
  84                 return IRQ_NONE;
  85
  86         rst_mask  = MANTIS_GPIF_WRACK  |
  87                     MANTIS_GPIF_OTHERR |
  88                     MANTIS_SBUF_WSTO   |
  89                     MANTIS_GPIF_EXTIRQ;
  90
  91         rst_stat  = mmread(MANTIS_GPIF_STATUS);
  92         rst_stat &= rst_mask;
  93         mmwrite(rst_stat, MANTIS_GPIF_STATUS);
  94
  95         mantis->mantis_int_stat = stat;
  96         mantis->mantis_int_mask = mask;
  97         dprintk(MANTIS_DEBUG, 0, "\n-- Stat=<%02x> Mask=<%02x> --", stat, mask);
  98         if (stat & MANTIS_INT_RISCEN) {
  99                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[0]);
 100         }
 101         if (stat & MANTIS_INT_IRQ0) {
 102                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[1]);
 103                 mantis->gpif_status = rst_stat;
 104                 wake_up(&ca->hif_write_wq);
 105                 schedule_work(&ca->hif_evm_work);
 106         }
 107         if (stat & MANTIS_INT_IRQ1) {
 108                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[2]);
 109                 schedule_work(&mantis->uart_work);
 110         }
 111         if (stat & MANTIS_INT_OCERR) {
 112                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);
 113         }
 114         if (stat & MANTIS_INT_PABORT) {
 115                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);
 116         }
 117         if (stat & MANTIS_INT_RIPERR) {
 118                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);
 119         }
 120         if (stat & MANTIS_INT_PPERR) {
 121                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);
 122         }
 123         if (stat & MANTIS_INT_FTRGT) {
 124                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);
 125         }
 126         if (stat & MANTIS_INT_RISCI) {
 127                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
 128                 mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
 129                 tasklet_schedule(&mantis->tasklet);
 130         }
 131         if (stat & MANTIS_INT_I2CDONE) {
 132                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
 133                 wake_up(&mantis->i2c_wq);
 134         }
 135         mmwrite(stat, MANTIS_INT_STAT);
 136         stat &= ~(MANTIS_INT_RISCEN   | MANTIS_INT_I2CDONE |
 137                   MANTIS_INT_I2CRACK  | MANTIS_INT_PCMCIA7 |
 138                   MANTIS_INT_PCMCIA6  | MANTIS_INT_PCMCIA5 |
 139                   MANTIS_INT_PCMCIA4  | MANTIS_INT_PCMCIA3 |
 140                   MANTIS_INT_PCMCIA2  | MANTIS_INT_PCMCIA1 |
 141                   MANTIS_INT_PCMCIA0  | MANTIS_INT_IRQ1    |
 142                   MANTIS_INT_IRQ0     | MANTIS_INT_OCERR   |
 143                   MANTIS_INT_PABORT   | MANTIS_INT_RIPERR  |
 144                   MANTIS_INT_PPERR    | MANTIS_INT_FTRGT   |
 145                   MANTIS_INT_RISCI);
 146
 147         if (stat)
 148                 dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);
 149
 150         dprintk(MANTIS_DEBUG, 0, "\n");
 151         return IRQ_HANDLED;
 152 }
 153
 154 static int hopper_pci_probe(struct pci_dev *pdev,
 155                             const struct pci_device_id *pci_id)
 156 {
 157         struct mantis_pci *mantis;
 158         struct mantis_hwconfig *config;
 159         int err = 0;
 160
 161         mantis = kzalloc(sizeof(struct mantis_pci), GFP_KERNEL);
 162         if (mantis == NULL) {
 163                 printk(KERN_ERR "%s ERROR: Out of memory\n", __func__);
 164                 err = -ENOMEM;
 165                 goto fail0;
 166         }
 167
 168         mantis->num             = devs;
 169         mantis->verbose         = verbose;
 170         mantis->pdev            = pdev;
 171         config                  = (struct mantis_hwconfig *) pci_id->driver_data;
 172         config->irq_handler     = &hopper_irq_handler;
 173         mantis->hwconfig        = config;
 174
 175         err = mantis_pci_init(mantis);
 176         if (err) {
 177                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
 178                 goto fail1;
 179         }
 180
 181         err = mantis_stream_control(mantis, STREAM_TO_HIF);
 182         if (err < 0) {
 183                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
 184                 goto fail1;
 185         }
 186
 187         err = mantis_i2c_init(mantis);
 188         if (err < 0) {
 189                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
 190                 goto fail2;
 191         }
 192
 193         err = mantis_get_mac(mantis);
 194         if (err < 0) {
 195                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
 196                 goto fail2;
 197         }
 198
 199         err = mantis_dma_init(mantis);
 200         if (err < 0) {
 201                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
 202                 goto fail3;
 203         }
 204
 205         err = mantis_dvb_init(mantis);
 206         if (err < 0) {
 207                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
 208                 goto fail4;
 209         }
 210         devs++;
 211
 212         return err;
 213
 214 fail4:
 215         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err);
 216         mantis_dma_exit(mantis);
 217
 218 fail3:
 219         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err);
 220         mantis_i2c_exit(mantis);
 221
 222 fail2:
 223         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err);
 224         mantis_pci_exit(mantis);
 225
 226 fail1:
 227         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err);
 228         kfree(mantis);
 229
 230 fail0:
 231         return err;
 232 }
 233
 234 static void hopper_pci_remove(struct pci_dev *pdev)
 235 {
 236         struct mantis_pci *mantis = pci_get_drvdata(pdev);
 237
 238         if (mantis) {
 239                 mantis_dvb_exit(mantis);
 240                 mantis_dma_exit(mantis);
 241                 mantis_i2c_exit(mantis);
 242                 mantis_pci_exit(mantis);
 243                 kfree(mantis);
 244         }
 245         return;
 246
 247 }
 248
 249 static struct pci_device_id hopper_pci_table[] = {
 250         MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config),
 251         { }
 252 };
 253
 254 MODULE_DEVICE_TABLE(pci, hopper_pci_table);
 255
 256 static struct pci_driver hopper_pci_driver = {
 257         .name           = DRIVER_NAME,
 258         .id_table       = hopper_pci_table,
 259         .probe          = hopper_pci_probe,
 260         .remove         = hopper_pci_remove,
 261 };
 262
 263 module_pci_driver(hopper_pci_driver);
 264
 265 MODULE_DESCRIPTION("HOPPER driver");
 266 MODULE_AUTHOR("Manu Abraham");
 267 MODULE_LICENSE("GPL");