diff options
Diffstat (limited to 'drivers/watchdog/omap_wdt.c')
| -rw-r--r-- | drivers/watchdog/omap_wdt.c | 94 |
1 files changed, 22 insertions, 72 deletions
diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c index 2f2ce7429f5b..aa5ad6e33f02 100644 --- a/drivers/watchdog/omap_wdt.c +++ b/drivers/watchdog/omap_wdt.c | |||
| @@ -60,9 +60,8 @@ struct omap_wdt_dev { | |||
| 60 | void __iomem *base; /* physical */ | 60 | void __iomem *base; /* physical */ |
| 61 | struct device *dev; | 61 | struct device *dev; |
| 62 | int omap_wdt_users; | 62 | int omap_wdt_users; |
| 63 | struct clk *armwdt_ck; | 63 | struct clk *ick; |
| 64 | struct clk *mpu_wdt_ick; | 64 | struct clk *fck; |
| 65 | struct clk *mpu_wdt_fck; | ||
| 66 | struct resource *mem; | 65 | struct resource *mem; |
| 67 | struct miscdevice omap_wdt_miscdev; | 66 | struct miscdevice omap_wdt_miscdev; |
| 68 | }; | 67 | }; |
| @@ -146,13 +145,8 @@ static int omap_wdt_open(struct inode *inode, struct file *file) | |||
| 146 | if (test_and_set_bit(1, (unsigned long *)&(wdev->omap_wdt_users))) | 145 | if (test_and_set_bit(1, (unsigned long *)&(wdev->omap_wdt_users))) |
| 147 | return -EBUSY; | 146 | return -EBUSY; |
| 148 | 147 | ||
| 149 | if (cpu_is_omap16xx()) | 148 | clk_enable(wdev->ick); /* Enable the interface clock */ |
| 150 | clk_enable(wdev->armwdt_ck); /* Enable the clock */ | 149 | clk_enable(wdev->fck); /* Enable the functional clock */ |
| 151 | |||
| 152 | if (cpu_is_omap24xx() || cpu_is_omap34xx()) { | ||
| 153 | clk_enable(wdev->mpu_wdt_ick); /* Enable the interface clock */ | ||
| 154 | clk_enable(wdev->mpu_wdt_fck); /* Enable the functional clock */ | ||
| 155 | } | ||
| 156 | 150 | ||
| 157 | /* initialize prescaler */ | 151 | /* initialize prescaler */ |
| 158 | while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01) | 152 | while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01) |
| @@ -181,13 +175,8 @@ static int omap_wdt_release(struct inode *inode, struct file *file) | |||
| 181 | 175 | ||
| 182 | omap_wdt_disable(wdev); | 176 | omap_wdt_disable(wdev); |
| 183 | 177 | ||
| 184 | if (cpu_is_omap16xx()) | 178 | clk_disable(wdev->ick); |
| 185 | clk_disable(wdev->armwdt_ck); /* Disable the clock */ | 179 | clk_disable(wdev->fck); |
| 186 | |||
| 187 | if (cpu_is_omap24xx() || cpu_is_omap34xx()) { | ||
| 188 | clk_disable(wdev->mpu_wdt_ick); /* Disable the clock */ | ||
| 189 | clk_disable(wdev->mpu_wdt_fck); /* Disable the clock */ | ||
| 190 | } | ||
| 191 | #else | 180 | #else |
| 192 | printk(KERN_CRIT "omap_wdt: Unexpected close, not stopping!\n"); | 181 | printk(KERN_CRIT "omap_wdt: Unexpected close, not stopping!\n"); |
| 193 | #endif | 182 | #endif |
| @@ -303,44 +292,19 @@ static int __init omap_wdt_probe(struct platform_device *pdev) | |||
| 303 | wdev->omap_wdt_users = 0; | 292 | wdev->omap_wdt_users = 0; |
| 304 | wdev->mem = mem; | 293 | wdev->mem = mem; |
| 305 | 294 | ||
| 306 | if (cpu_is_omap16xx()) { | 295 | wdev->ick = clk_get(&pdev->dev, "ick"); |
| 307 | wdev->armwdt_ck = clk_get(&pdev->dev, "armwdt_ck"); | 296 | if (IS_ERR(wdev->ick)) { |
| 308 | if (IS_ERR(wdev->armwdt_ck)) { | 297 | ret = PTR_ERR(wdev->ick); |
| 309 | ret = PTR_ERR(wdev->armwdt_ck); | 298 | wdev->ick = NULL; |
| 310 | wdev->armwdt_ck = NULL; | 299 | goto err_clk; |
| 311 | goto err_clk; | ||
| 312 | } | ||
| 313 | } | 300 | } |
| 314 | 301 | wdev->fck = clk_get(&pdev->dev, "fck"); | |
| 315 | if (cpu_is_omap24xx()) { | 302 | if (IS_ERR(wdev->fck)) { |
| 316 | wdev->mpu_wdt_ick = clk_get(&pdev->dev, "mpu_wdt_ick"); | 303 | ret = PTR_ERR(wdev->fck); |
| 317 | if (IS_ERR(wdev->mpu_wdt_ick)) { | 304 | wdev->fck = NULL; |
| 318 | ret = PTR_ERR(wdev->mpu_wdt_ick); | 305 | goto err_clk; |
| 319 | wdev->mpu_wdt_ick = NULL; | ||
| 320 | goto err_clk; | ||
| 321 | } | ||
| 322 | wdev->mpu_wdt_fck = clk_get(&pdev->dev, "mpu_wdt_fck"); | ||
| 323 | if (IS_ERR(wdev->mpu_wdt_fck)) { | ||
| 324 | ret = PTR_ERR(wdev->mpu_wdt_fck); | ||
| 325 | wdev->mpu_wdt_fck = NULL; | ||
| 326 | goto err_clk; | ||
| 327 | } | ||
| 328 | } | 306 | } |
| 329 | 307 | ||
| 330 | if (cpu_is_omap34xx()) { | ||
| 331 | wdev->mpu_wdt_ick = clk_get(&pdev->dev, "wdt2_ick"); | ||
| 332 | if (IS_ERR(wdev->mpu_wdt_ick)) { | ||
| 333 | ret = PTR_ERR(wdev->mpu_wdt_ick); | ||
| 334 | wdev->mpu_wdt_ick = NULL; | ||
| 335 | goto err_clk; | ||
| 336 | } | ||
| 337 | wdev->mpu_wdt_fck = clk_get(&pdev->dev, "wdt2_fck"); | ||
| 338 | if (IS_ERR(wdev->mpu_wdt_fck)) { | ||
| 339 | ret = PTR_ERR(wdev->mpu_wdt_fck); | ||
| 340 | wdev->mpu_wdt_fck = NULL; | ||
| 341 | goto err_clk; | ||
| 342 | } | ||
| 343 | } | ||
| 344 | wdev->base = ioremap(res->start, res->end - res->start + 1); | 308 | wdev->base = ioremap(res->start, res->end - res->start + 1); |
| 345 | if (!wdev->base) { | 309 | if (!wdev->base) { |
| 346 | ret = -ENOMEM; | 310 | ret = -ENOMEM; |
| @@ -380,12 +344,10 @@ err_ioremap: | |||
| 380 | wdev->base = NULL; | 344 | wdev->base = NULL; |
| 381 | 345 | ||
| 382 | err_clk: | 346 | err_clk: |
| 383 | if (wdev->armwdt_ck) | 347 | if (wdev->ick) |
| 384 | clk_put(wdev->armwdt_ck); | 348 | clk_put(wdev->ick); |
| 385 | if (wdev->mpu_wdt_ick) | 349 | if (wdev->fck) |
| 386 | clk_put(wdev->mpu_wdt_ick); | 350 | clk_put(wdev->fck); |
| 387 | if (wdev->mpu_wdt_fck) | ||
| 388 | clk_put(wdev->mpu_wdt_fck); | ||
| 389 | kfree(wdev); | 351 | kfree(wdev); |
| 390 | 352 | ||
| 391 | err_kzalloc: | 353 | err_kzalloc: |
| @@ -417,20 +379,8 @@ static int omap_wdt_remove(struct platform_device *pdev) | |||
| 417 | release_mem_region(res->start, res->end - res->start + 1); | 379 | release_mem_region(res->start, res->end - res->start + 1); |
| 418 | platform_set_drvdata(pdev, NULL); | 380 | platform_set_drvdata(pdev, NULL); |
| 419 | 381 | ||
| 420 | if (wdev->armwdt_ck) { | 382 | clk_put(wdev->ick); |
| 421 | clk_put(wdev->armwdt_ck); | 383 | clk_put(wdev->fck); |
| 422 | wdev->armwdt_ck = NULL; | ||
| 423 | } | ||
| 424 | |||
| 425 | if (wdev->mpu_wdt_ick) { | ||
| 426 | clk_put(wdev->mpu_wdt_ick); | ||
| 427 | wdev->mpu_wdt_ick = NULL; | ||
| 428 | } | ||
| 429 | |||
| 430 | if (wdev->mpu_wdt_fck) { | ||
| 431 | clk_put(wdev->mpu_wdt_fck); | ||
| 432 | wdev->mpu_wdt_fck = NULL; | ||
| 433 | } | ||
| 434 | iounmap(wdev->base); | 384 | iounmap(wdev->base); |
| 435 | 385 | ||
| 436 | kfree(wdev); | 386 | kfree(wdev); |
