drivers/staging/solo6x10/solo6010-core.c

   1 /*
   2  * Copyright (C) 2010 Bluecherry, LLC www.bluecherrydvr.com
   3  * Copyright (C) 2010 Ben Collins <bcollins@bluecherry.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/module.h>
  22 #include <linux/pci.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/videodev2.h>
  25
  26 #include "solo6010.h"
  27 #include "solo6010-tw28.h"
  28
  29 MODULE_DESCRIPTION("Softlogic 6010 MP4 Encoder/Decoder V4L2/ALSA Driver");
  30 MODULE_AUTHOR("Ben Collins <bcollins@bluecherry.net>");
  31 MODULE_VERSION(SOLO6010_VERSION);
  32 MODULE_LICENSE("GPL");
  33
  34 void solo6010_irq_on(struct solo6010_dev *solo_dev, u32 mask)
  35 {
  36         solo_dev->irq_mask |= mask;
  37         solo_reg_write(solo_dev, SOLO_IRQ_ENABLE, solo_dev->irq_mask);
  38 }
  39
  40 void solo6010_irq_off(struct solo6010_dev *solo_dev, u32 mask)
  41 {
  42         solo_dev->irq_mask &= ~mask;
  43         solo_reg_write(solo_dev, SOLO_IRQ_ENABLE, solo_dev->irq_mask);
  44 }
  45
  46 /* XXX We should check the return value of the sub-device ISR's */
  47 static irqreturn_t solo6010_isr(int irq, void *data)
  48 {
  49         struct solo6010_dev *solo_dev = data;
  50         u32 status;
  51         int i;
  52
  53         status = solo_reg_read(solo_dev, SOLO_IRQ_STAT);
  54         if (!status)
  55                 return IRQ_NONE;
  56
  57         if (status & ~solo_dev->irq_mask) {
  58                 solo_reg_write(solo_dev, SOLO_IRQ_STAT,
  59                                status & ~solo_dev->irq_mask);
  60                 status &= solo_dev->irq_mask;
  61         }
  62
  63         if (status & SOLO_IRQ_PCI_ERR) {
  64                 u32 err = solo_reg_read(solo_dev, SOLO_PCI_ERR);
  65                 solo_p2m_error_isr(solo_dev, err);
  66                 solo_reg_write(solo_dev, SOLO_IRQ_STAT, SOLO_IRQ_PCI_ERR);
  67         }
  68
  69         for (i = 0; i < SOLO_NR_P2M; i++)
  70                 if (status & SOLO_IRQ_P2M(i))
  71                         solo_p2m_isr(solo_dev, i);
  72
  73         if (status & SOLO_IRQ_IIC)
  74                 solo_i2c_isr(solo_dev);
  75
  76         if (status & SOLO_IRQ_VIDEO_IN)
  77                 solo_video_in_isr(solo_dev);
  78
  79         /* Call this first so enc gets detected flag set */
  80         if (status & SOLO_IRQ_MOTION)
  81                 solo_motion_isr(solo_dev);
  82
  83         if (status & SOLO_IRQ_ENCODER)
  84                 solo_enc_v4l2_isr(solo_dev);
  85
  86         if (status & SOLO_IRQ_G723)
  87                 solo_g723_isr(solo_dev);
  88
  89         return IRQ_HANDLED;
  90 }
  91
  92 static void free_solo_dev(struct solo6010_dev *solo_dev)
  93 {
  94         struct pci_dev *pdev;
  95
  96         if (!solo_dev)
  97                 return;
  98
  99         pdev = solo_dev->pdev;
 100
 101         /* If we never initialized the PCI device, then nothing else
 102          * below here needs cleanup */
 103         if (!pdev) {
 104                 kfree(solo_dev);
 105                 return;
 106         }
 107
 108         /* Bring down the sub-devices first */
 109         solo_g723_exit(solo_dev);
 110         solo_enc_v4l2_exit(solo_dev);
 111         solo_enc_exit(solo_dev);
 112         solo_v4l2_exit(solo_dev);
 113         solo_disp_exit(solo_dev);
 114         solo_gpio_exit(solo_dev);
 115         solo_p2m_exit(solo_dev);
 116         solo_i2c_exit(solo_dev);
 117
 118         /* Now cleanup the PCI device */
 119         if (solo_dev->reg_base) {
 120                 solo6010_irq_off(solo_dev, ~0);
 121                 pci_iounmap(pdev, solo_dev->reg_base);
 122                 free_irq(pdev->irq, solo_dev);
 123         }
 124
 125         pci_release_regions(pdev);
 126         pci_disable_device(pdev);
 127         pci_set_drvdata(pdev, NULL);
 128
 129         kfree(solo_dev);
 130 }
 131
 132 static int __devinit solo6010_pci_probe(struct pci_dev *pdev,
 133                                         const struct pci_device_id *id)
 134 {
 135         struct solo6010_dev *solo_dev;
 136         int ret;
 137         int sdram;
 138         u8 chip_id;
 139
 140         solo_dev = kzalloc(sizeof(*solo_dev), GFP_KERNEL);
 141         if (solo_dev == NULL)
 142                 return -ENOMEM;
 143
 144         solo_dev->pdev = pdev;
 145         spin_lock_init(&solo_dev->reg_io_lock);
 146         pci_set_drvdata(pdev, solo_dev);
 147
 148         ret = pci_enable_device(pdev);
 149         if (ret)
 150                 goto fail_probe;
 151
 152         pci_set_master(pdev);
 153
 154         ret = pci_request_regions(pdev, SOLO6010_NAME);
 155         if (ret)
 156                 goto fail_probe;
 157
 158         solo_dev->reg_base = pci_ioremap_bar(pdev, 0);
 159         if (solo_dev->reg_base == NULL) {
 160                 ret = -ENOMEM;
 161                 goto fail_probe;
 162         }
 163
 164         chip_id = solo_reg_read(solo_dev, SOLO_CHIP_OPTION) &
 165                                         SOLO_CHIP_ID_MASK;
 166         switch (chip_id) {
 167         case 7:
 168                 solo_dev->nr_chans = 16;
 169                 solo_dev->nr_ext = 5;
 170                 break;
 171         case 6:
 172                 solo_dev->nr_chans = 8;
 173                 solo_dev->nr_ext = 2;
 174                 break;
 175         default:
 176                 dev_warn(&pdev->dev, "Invalid chip_id 0x%02x, "
 177                          "defaulting to 4 channels\n",
 178                          chip_id);
 179         case 5:
 180                 solo_dev->nr_chans = 4;
 181                 solo_dev->nr_ext = 1;
 182         }
 183
 184         /* Disable all interrupts to start */
 185         solo6010_irq_off(solo_dev, ~0);
 186
 187         /* Initial global settings */
 188         solo_reg_write(solo_dev, SOLO_SYS_CFG, SOLO_SYS_CFG_SDRAM64BIT |
 189                        SOLO_SYS_CFG_INPUTDIV(25) |
 190                        SOLO_SYS_CFG_FEEDBACKDIV((SOLO_CLOCK_MHZ * 2) - 2) |
 191                        SOLO_SYS_CFG_OUTDIV(3));
 192         solo_reg_write(solo_dev, SOLO_TIMER_CLOCK_NUM, SOLO_CLOCK_MHZ - 1);
 193
 194         /* PLL locking time of 1ms */
 195         mdelay(1);
 196
 197         ret = request_irq(pdev->irq, solo6010_isr, IRQF_SHARED, SOLO6010_NAME,
 198                           solo_dev);
 199         if (ret)
 200                 goto fail_probe;
 201
 202         /* Handle this from the start */
 203         solo6010_irq_on(solo_dev, SOLO_IRQ_PCI_ERR);
 204
 205         ret = solo_i2c_init(solo_dev);
 206         if (ret)
 207                 goto fail_probe;
 208
 209         /* Setup the DMA engine */
 210         sdram = (solo_dev->nr_chans >= 8) ? 2 : 1;
 211         solo_reg_write(solo_dev, SOLO_DMA_CTRL,
 212                        SOLO_DMA_CTRL_REFRESH_CYCLE(1) |
 213                        SOLO_DMA_CTRL_SDRAM_SIZE(sdram) |
 214                        SOLO_DMA_CTRL_SDRAM_CLK_INVERT |
 215                        SOLO_DMA_CTRL_READ_CLK_SELECT |
 216                        SOLO_DMA_CTRL_LATENCY(1));
 217
 218         ret = solo_p2m_init(solo_dev);
 219         if (ret)
 220                 goto fail_probe;
 221
 222         ret = solo_disp_init(solo_dev);
 223         if (ret)
 224                 goto fail_probe;
 225
 226         ret = solo_gpio_init(solo_dev);
 227         if (ret)
 228                 goto fail_probe;
 229
 230         ret = solo_tw28_init(solo_dev);
 231         if (ret)
 232                 goto fail_probe;
 233
 234         ret = solo_v4l2_init(solo_dev);
 235         if (ret)
 236                 goto fail_probe;
 237
 238         ret = solo_enc_init(solo_dev);
 239         if (ret)
 240                 goto fail_probe;
 241
 242         ret = solo_enc_v4l2_init(solo_dev);
 243         if (ret)
 244                 goto fail_probe;
 245
 246         ret = solo_g723_init(solo_dev);
 247         if (ret)
 248                 goto fail_probe;
 249
 250         return 0;
 251
 252 fail_probe:
 253         free_solo_dev(solo_dev);
 254         return ret;
 255 }
 256
 257 static void __devexit solo6010_pci_remove(struct pci_dev *pdev)
 258 {
 259         struct solo6010_dev *solo_dev = pci_get_drvdata(pdev);
 260
 261         free_solo_dev(solo_dev);
 262 }
 263
 264 static struct pci_device_id solo6010_id_table[] = {
 265         /* 6010 based cards */
 266         {PCI_DEVICE(PCI_VENDOR_ID_SOFTLOGIC, PCI_DEVICE_ID_SOLO6010)},
 267         {PCI_DEVICE(PCI_VENDOR_ID_BLUECHERRY, PCI_DEVICE_ID_NEUSOLO_4)},
 268         {PCI_DEVICE(PCI_VENDOR_ID_BLUECHERRY, PCI_DEVICE_ID_NEUSOLO_9)},
 269         {PCI_DEVICE(PCI_VENDOR_ID_BLUECHERRY, PCI_DEVICE_ID_NEUSOLO_16)},
 270         {PCI_DEVICE(PCI_VENDOR_ID_BLUECHERRY, PCI_DEVICE_ID_BC_SOLO_4)},
 271         {PCI_DEVICE(PCI_VENDOR_ID_BLUECHERRY, PCI_DEVICE_ID_BC_SOLO_9)},
 272         {PCI_DEVICE(PCI_VENDOR_ID_BLUECHERRY, PCI_DEVICE_ID_BC_SOLO_16)},
 273         /* 6110 based cards */
 274         {PCI_DEVICE(PCI_VENDOR_ID_BLUECHERRY, PCI_DEVICE_ID_BC_6110_4)},
 275         {PCI_DEVICE(PCI_VENDOR_ID_BLUECHERRY, PCI_DEVICE_ID_BC_6110_8)},
 276         {PCI_DEVICE(PCI_VENDOR_ID_BLUECHERRY, PCI_DEVICE_ID_BC_6110_16)},
 277         {0,}
 278 };
 279
 280 MODULE_DEVICE_TABLE(pci, solo6010_id_table);
 281
 282 static struct pci_driver solo6010_pci_driver = {
 283         .name = SOLO6010_NAME,
 284         .id_table = solo6010_id_table,
 285         .probe = solo6010_pci_probe,
 286         .remove = solo6010_pci_remove,
 287 };
 288
 289 static int __init solo6010_module_init(void)
 290 {
 291         return pci_register_driver(&solo6010_pci_driver);
 292 }
 293
 294 static void __exit solo6010_module_exit(void)
 295 {
 296         pci_unregister_driver(&solo6010_pci_driver);
 297 }
 298
 299 module_init(solo6010_module_init);
 300 module_exit(solo6010_module_exit);