target/linux/generic/patches-3.13/025-bcma_backport.patch

   1 --- a/drivers/bcma/Kconfig
   2 +++ b/drivers/bcma/Kconfig
   3 @@ -75,6 +75,7 @@ config BCMA_DRIVER_GMAC_CMN
   4  config BCMA_DRIVER_GPIO
   5         bool "BCMA GPIO driver"
   6         depends on BCMA && GPIOLIB
   7 +       select IRQ_DOMAIN if BCMA_HOST_SOC
   8         help
   9           Driver to provide access to the GPIO pins of the bcma bus.
  10
  11 --- a/drivers/bcma/bcma_private.h
  12 +++ b/drivers/bcma/bcma_private.h
  13 @@ -33,8 +33,6 @@ int __init bcma_bus_early_register(struc
  14  int bcma_bus_suspend(struct bcma_bus *bus);
  15  int bcma_bus_resume(struct bcma_bus *bus);
  16  #endif
  17 -struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
  18 -                                       u8 unit);
  19
  20  /* scan.c */
  21  int bcma_bus_scan(struct bcma_bus *bus);
  22 --- a/drivers/bcma/driver_chipcommon_sflash.c
  23 +++ b/drivers/bcma/driver_chipcommon_sflash.c
  24 @@ -38,7 +38,7 @@ static const struct bcma_sflash_tbl_e bc
  25         { "M25P32", 0x15, 0x10000, 64, },
  26         { "M25P64", 0x16, 0x10000, 128, },
  27         { "M25FL128", 0x17, 0x10000, 256, },
  28 -       { 0 },
  29 +       { NULL },
  30  };
  31
  32  static const struct bcma_sflash_tbl_e bcma_sflash_sst_tbl[] = {
  33 @@ -56,7 +56,7 @@ static const struct bcma_sflash_tbl_e bc
  34         { "SST25VF016", 0x41, 0x1000, 512, },
  35         { "SST25VF032", 0x4a, 0x1000, 1024, },
  36         { "SST25VF064", 0x4b, 0x1000, 2048, },
  37 -       { 0 },
  38 +       { NULL },
  39  };
  40
  41  static const struct bcma_sflash_tbl_e bcma_sflash_at_tbl[] = {
  42 @@ -67,7 +67,7 @@ static const struct bcma_sflash_tbl_e bc
  43         { "AT45DB161", 0x2c, 512, 4096, },
  44         { "AT45DB321", 0x34, 512, 8192, },
  45         { "AT45DB642", 0x3c, 1024, 8192, },
  46 -       { 0 },
  47 +       { NULL },
  48  };
  49
  50  static void bcma_sflash_cmd(struct bcma_drv_cc *cc, u32 opcode)
  51 --- a/drivers/bcma/driver_gpio.c
  52 +++ b/drivers/bcma/driver_gpio.c
  53 @@ -9,6 +9,9 @@
  54   */
  55
  56  #include <linux/gpio.h>
  57 +#include <linux/irq.h>
  58 +#include <linux/interrupt.h>
  59 +#include <linux/irqdomain.h>
  60  #include <linux/export.h>
  61  #include <linux/bcma/bcma.h>
  62
  63 @@ -73,19 +76,136 @@ static void bcma_gpio_free(struct gpio_c
  64         bcma_chipco_gpio_pullup(cc, 1 << gpio, 0);
  65  }
  66
  67 +#if IS_BUILTIN(CONFIG_BCMA_HOST_SOC)
  68  static int bcma_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
  69  {
  70         struct bcma_drv_cc *cc = bcma_gpio_get_cc(chip);
  71
  72         if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC)
  73 -               return bcma_core_irq(cc->core);
  74 +               return irq_find_mapping(cc->irq_domain, gpio);
  75         else
  76                 return -EINVAL;
  77  }
  78
  79 +static void bcma_gpio_irq_unmask(struct irq_data *d)
  80 +{
  81 +       struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d);
  82 +       int gpio = irqd_to_hwirq(d);
  83 +       u32 val = bcma_chipco_gpio_in(cc, BIT(gpio));
  84 +
  85 +       bcma_chipco_gpio_polarity(cc, BIT(gpio), val);
  86 +       bcma_chipco_gpio_intmask(cc, BIT(gpio), BIT(gpio));
  87 +}
  88 +
  89 +static void bcma_gpio_irq_mask(struct irq_data *d)
  90 +{
  91 +       struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d);
  92 +       int gpio = irqd_to_hwirq(d);
  93 +
  94 +       bcma_chipco_gpio_intmask(cc, BIT(gpio), 0);
  95 +}
  96 +
  97 +static struct irq_chip bcma_gpio_irq_chip = {
  98 +       .name           = "BCMA-GPIO",
  99 +       .irq_mask       = bcma_gpio_irq_mask,
 100 +       .irq_unmask     = bcma_gpio_irq_unmask,
 101 +};
 102 +
 103 +static irqreturn_t bcma_gpio_irq_handler(int irq, void *dev_id)
 104 +{
 105 +       struct bcma_drv_cc *cc = dev_id;
 106 +       u32 val = bcma_cc_read32(cc, BCMA_CC_GPIOIN);
 107 +       u32 mask = bcma_cc_read32(cc, BCMA_CC_GPIOIRQ);
 108 +       u32 pol = bcma_cc_read32(cc, BCMA_CC_GPIOPOL);
 109 +       unsigned long irqs = (val ^ pol) & mask;
 110 +       int gpio;
 111 +
 112 +       if (!irqs)
 113 +               return IRQ_NONE;
 114 +
 115 +       for_each_set_bit(gpio, &irqs, cc->gpio.ngpio)
 116 +               generic_handle_irq(bcma_gpio_to_irq(&cc->gpio, gpio));
 117 +       bcma_chipco_gpio_polarity(cc, irqs, val & irqs);
 118 +
 119 +       return IRQ_HANDLED;
 120 +}
 121 +
 122 +static int bcma_gpio_irq_domain_init(struct bcma_drv_cc *cc)
 123 +{
 124 +       struct gpio_chip *chip = &cc->gpio;
 125 +       int gpio, hwirq, err;
 126 +
 127 +       if (cc->core->bus->hosttype != BCMA_HOSTTYPE_SOC)
 128 +               return 0;
 129 +
 130 +       cc->irq_domain = irq_domain_add_linear(NULL, chip->ngpio,
 131 +                                              &irq_domain_simple_ops, cc);
 132 +       if (!cc->irq_domain) {
 133 +               err = -ENODEV;
 134 +               goto err_irq_domain;
 135 +       }
 136 +       for (gpio = 0; gpio < chip->ngpio; gpio++) {
 137 +               int irq = irq_create_mapping(cc->irq_domain, gpio);
 138 +
 139 +               irq_set_chip_data(irq, cc);
 140 +               irq_set_chip_and_handler(irq, &bcma_gpio_irq_chip,
 141 +                                        handle_simple_irq);
 142 +       }
 143 +
 144 +       hwirq = bcma_core_irq(cc->core);
 145 +       err = request_irq(hwirq, bcma_gpio_irq_handler, IRQF_SHARED, "gpio",
 146 +                         cc);
 147 +       if (err)
 148 +               goto err_req_irq;
 149 +
 150 +       bcma_chipco_gpio_intmask(cc, ~0, 0);
 151 +       bcma_cc_set32(cc, BCMA_CC_IRQMASK, BCMA_CC_IRQ_GPIO);
 152 +
 153 +       return 0;
 154 +
 155 +err_req_irq:
 156 +       for (gpio = 0; gpio < chip->ngpio; gpio++) {
 157 +               int irq = irq_find_mapping(cc->irq_domain, gpio);
 158 +
 159 +               irq_dispose_mapping(irq);
 160 +       }
 161 +       irq_domain_remove(cc->irq_domain);
 162 +err_irq_domain:
 163 +       return err;
 164 +}
 165 +
 166 +static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc)
 167 +{
 168 +       struct gpio_chip *chip = &cc->gpio;
 169 +       int gpio;
 170 +
 171 +       if (cc->core->bus->hosttype != BCMA_HOSTTYPE_SOC)
 172 +               return;
 173 +
 174 +       bcma_cc_mask32(cc, BCMA_CC_IRQMASK, ~BCMA_CC_IRQ_GPIO);
 175 +       free_irq(bcma_core_irq(cc->core), cc);
 176 +       for (gpio = 0; gpio < chip->ngpio; gpio++) {
 177 +               int irq = irq_find_mapping(cc->irq_domain, gpio);
 178 +
 179 +               irq_dispose_mapping(irq);
 180 +       }
 181 +       irq_domain_remove(cc->irq_domain);
 182 +}
 183 +#else
 184 +static int bcma_gpio_irq_domain_init(struct bcma_drv_cc *cc)
 185 +{
 186 +       return 0;
 187 +}
 188 +
 189 +static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc)
 190 +{
 191 +}
 192 +#endif
 193 +
 194  int bcma_gpio_init(struct bcma_drv_cc *cc)
 195  {
 196         struct gpio_chip *chip = &cc->gpio;
 197 +       int err;
 198
 199         chip->label             = "bcma_gpio";
 200         chip->owner             = THIS_MODULE;
 201 @@ -95,8 +215,17 @@ int bcma_gpio_init(struct bcma_drv_cc *c
 202         chip->set               = bcma_gpio_set_value;
 203         chip->direction_input   = bcma_gpio_direction_input;
 204         chip->direction_output  = bcma_gpio_direction_output;
 205 +#if IS_BUILTIN(CONFIG_BCMA_HOST_SOC)
 206         chip->to_irq            = bcma_gpio_to_irq;
 207 -       chip->ngpio             = 16;
 208 +#endif
 209 +       switch (cc->core->bus->chipinfo.id) {
 210 +       case BCMA_CHIP_ID_BCM5357:
 211 +               chip->ngpio     = 32;
 212 +               break;
 213 +       default:
 214 +               chip->ngpio     = 16;
 215 +       }
 216 +
 217         /* There is just one SoC in one device and its GPIO addresses should be
 218          * deterministic to address them more easily. The other buses could get
 219          * a random base number. */
 220 @@ -105,10 +234,21 @@ int bcma_gpio_init(struct bcma_drv_cc *c
 221         else
 222                 chip->base              = -1;
 223
 224 -       return gpiochip_add(chip);
 225 +       err = bcma_gpio_irq_domain_init(cc);
 226 +       if (err)
 227 +               return err;
 228 +
 229 +       err = gpiochip_add(chip);
 230 +       if (err) {
 231 +               bcma_gpio_irq_domain_exit(cc);
 232 +               return err;
 233 +       }
 234 +
 235 +       return 0;
 236  }
 237
 238  int bcma_gpio_unregister(struct bcma_drv_cc *cc)
 239  {
 240 +       bcma_gpio_irq_domain_exit(cc);
 241         return gpiochip_remove(&cc->gpio);
 242  }
 243 --- a/drivers/bcma/host_pci.c
 244 +++ b/drivers/bcma/host_pci.c
 245 @@ -238,7 +238,6 @@ static void bcma_host_pci_remove(struct
 246         pci_release_regions(dev);
 247         pci_disable_device(dev);
 248         kfree(bus);
 249 -       pci_set_drvdata(dev, NULL);
 250  }
 251
 252  #ifdef CONFIG_PM_SLEEP
 253 @@ -270,7 +269,7 @@ static SIMPLE_DEV_PM_OPS(bcma_pm_ops, bc
 254
 255  #endif /* CONFIG_PM_SLEEP */
 256
 257 -static DEFINE_PCI_DEVICE_TABLE(bcma_pci_bridge_tbl) = {
 258 +static const struct pci_device_id bcma_pci_bridge_tbl[] = {
 259         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) },
 260         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4313) },
 261         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 43224) },
 262 --- a/drivers/bcma/main.c
 263 +++ b/drivers/bcma/main.c
 264 @@ -78,18 +78,6 @@ static u16 bcma_cc_core_id(struct bcma_b
 265         return BCMA_CORE_CHIPCOMMON;
 266  }
 267
 268 -struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
 269 -{
 270 -       struct bcma_device *core;
 271 -
 272 -       list_for_each_entry(core, &bus->cores, list) {
 273 -               if (core->id.id == coreid)
 274 -                       return core;
 275 -       }
 276 -       return NULL;
 277 -}
 278 -EXPORT_SYMBOL_GPL(bcma_find_core);
 279 -
 280  struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
 281                                         u8 unit)
 282  {
 283 @@ -101,6 +89,7 @@ struct bcma_device *bcma_find_core_unit(
 284         }
 285         return NULL;
 286  }
 287 +EXPORT_SYMBOL_GPL(bcma_find_core_unit);
 288
 289  bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value,
 290                      int timeout)
 291 @@ -176,6 +165,7 @@ static int bcma_register_cores(struct bc
 292                         bcma_err(bus,
 293                                  "Could not register dev for core 0x%03X\n",
 294                                  core->id.id);
 295 +                       put_device(&core->dev);
 296                         continue;
 297                 }
 298                 core->dev_registered = true;
 299 --- a/include/linux/bcma/bcma.h
 300 +++ b/include/linux/bcma/bcma.h
 301 @@ -418,7 +418,14 @@ static inline void bcma_maskset16(struct
 302         bcma_write16(cc, offset, (bcma_read16(cc, offset) & mask) | set);
 303  }
 304
 305 -extern struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid);
 306 +extern struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
 307 +                                              u8 unit);
 308 +static inline struct bcma_device *bcma_find_core(struct bcma_bus *bus,
 309 +                                                u16 coreid)
 310 +{
 311 +       return bcma_find_core_unit(bus, coreid, 0);
 312 +}
 313 +
 314  extern bool bcma_core_is_enabled(struct bcma_device *core);
 315  extern void bcma_core_disable(struct bcma_device *core, u32 flags);
 316  extern int bcma_core_enable(struct bcma_device *core, u32 flags);
 317 --- a/include/linux/bcma/bcma_driver_chipcommon.h
 318 +++ b/include/linux/bcma/bcma_driver_chipcommon.h
 319 @@ -640,6 +640,7 @@ struct bcma_drv_cc {
 320         spinlock_t gpio_lock;
 321  #ifdef CONFIG_BCMA_DRIVER_GPIO
 322         struct gpio_chip gpio;
 323 +       struct irq_domain *irq_domain;
 324  #endif
 325  };
 326