diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_gpio.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_gpio.c | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_gpio.c b/drivers/gpu/drm/nouveau/nouveau_gpio.c deleted file mode 100644 index ded74e555e5f..000000000000 --- a/drivers/gpu/drm/nouveau/nouveau_gpio.c +++ /dev/null @@ -1,400 +0,0 @@ -/* - * Copyright 2011 Red Hat Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: Ben Skeggs - */ - -#include <drm/drmP.h> -#include "nouveau_drv.h" -#include "nouveau_i2c.h" -#include "nouveau_gpio.h" - -static u8 * -dcb_gpio_table(struct drm_device *dev) -{ - u8 *dcb = dcb_table(dev); - if (dcb) { - if (dcb[0] >= 0x30 && dcb[1] >= 0x0c) - return ROMPTR(dev, dcb[0x0a]); - if (dcb[0] >= 0x22 && dcb[-1] >= 0x13) - return ROMPTR(dev, dcb[-15]); - } - return NULL; -} - -static u8 * -dcb_gpio_entry(struct drm_device *dev, int idx, int ent, u8 *version) -{ - u8 *table = dcb_gpio_table(dev); - if (table) { - *version = table[0]; - if (*version < 0x30 && ent < table[2]) - return table + 3 + (ent * table[1]); - else if (ent < table[2]) - return table + table[1] + (ent * table[3]); - } - return NULL; -} - -int -nouveau_gpio_drive(struct drm_device *dev, int idx, int line, int dir, int out) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - - return pgpio->drive ? pgpio->drive(dev, line, dir, out) : -ENODEV; -} - -int -nouveau_gpio_sense(struct drm_device *dev, int idx, int line) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - - return pgpio->sense ? pgpio->sense(dev, line) : -ENODEV; -} - -int -nouveau_gpio_find(struct drm_device *dev, int idx, u8 func, u8 line, - struct gpio_func *gpio) -{ - u8 *table, *entry, version; - int i = -1; - - if (line == 0xff && func == 0xff) - return -EINVAL; - - while ((entry = dcb_gpio_entry(dev, idx, ++i, &version))) { - if (version < 0x40) { - u16 data = ROM16(entry[0]); - *gpio = (struct gpio_func) { - .line = (data & 0x001f) >> 0, - .func = (data & 0x07e0) >> 5, - .log[0] = (data & 0x1800) >> 11, - .log[1] = (data & 0x6000) >> 13, - }; - } else - if (version < 0x41) { - *gpio = (struct gpio_func) { - .line = entry[0] & 0x1f, - .func = entry[1], - .log[0] = (entry[3] & 0x18) >> 3, - .log[1] = (entry[3] & 0x60) >> 5, - }; - } else { - *gpio = (struct gpio_func) { - .line = entry[0] & 0x3f, - .func = entry[1], - .log[0] = (entry[4] & 0x30) >> 4, - .log[1] = (entry[4] & 0xc0) >> 6, - }; - } - - if ((line == 0xff || line == gpio->line) && - (func == 0xff || func == gpio->func)) - return 0; - } - - /* DCB 2.2, fixed TVDAC GPIO data */ - if ((table = dcb_table(dev)) && table[0] >= 0x22) { - if (func == DCB_GPIO_TVDAC0) { - *gpio = (struct gpio_func) { - .func = DCB_GPIO_TVDAC0, - .line = table[-4] >> 4, - .log[0] = !!(table[-5] & 2), - .log[1] = !(table[-5] & 2), - }; - return 0; - } - } - - /* Apple iMac G4 NV18 */ - if (nv_match_device(dev, 0x0189, 0x10de, 0x0010)) { - if (func == DCB_GPIO_TVDAC0) { - *gpio = (struct gpio_func) { - .func = DCB_GPIO_TVDAC0, - .line = 4, - .log[0] = 0, - .log[1] = 1, - }; - return 0; - } - } - - return -EINVAL; -} - -int -nouveau_gpio_set(struct drm_device *dev, int idx, u8 tag, u8 line, int state) -{ - struct gpio_func gpio; - int ret; - - ret = nouveau_gpio_find(dev, idx, tag, line, &gpio); - if (ret == 0) { - int dir = !!(gpio.log[state] & 0x02); - int out = !!(gpio.log[state] & 0x01); - ret = nouveau_gpio_drive(dev, idx, gpio.line, dir, out); - } - - return ret; -} - -int -nouveau_gpio_get(struct drm_device *dev, int idx, u8 tag, u8 line) -{ - struct gpio_func gpio; - int ret; - - ret = nouveau_gpio_find(dev, idx, tag, line, &gpio); - if (ret == 0) { - ret = nouveau_gpio_sense(dev, idx, gpio.line); - if (ret >= 0) - ret = (ret == (gpio.log[1] & 1)); - } - - return ret; -} - -int -nouveau_gpio_irq(struct drm_device *dev, int idx, u8 tag, u8 line, bool on) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - struct gpio_func gpio; - int ret; - - ret = nouveau_gpio_find(dev, idx, tag, line, &gpio); - if (ret == 0) { - if (idx == 0 && pgpio->irq_enable) - pgpio->irq_enable(dev, gpio.line, on); - else - ret = -ENODEV; - } - - return ret; -} - -struct gpio_isr { - struct drm_device *dev; - struct list_head head; - struct work_struct work; - int idx; - struct gpio_func func; - void (*handler)(void *, int); - void *data; - bool inhibit; -}; - -static void -nouveau_gpio_isr_bh(struct work_struct *work) -{ - struct gpio_isr *isr = container_of(work, struct gpio_isr, work); - struct drm_device *dev = isr->dev; - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - unsigned long flags; - int state; - - state = nouveau_gpio_get(dev, isr->idx, isr->func.func, isr->func.line); - if (state >= 0) - isr->handler(isr->data, state); - - spin_lock_irqsave(&pgpio->lock, flags); - isr->inhibit = false; - spin_unlock_irqrestore(&pgpio->lock, flags); -} - -void -nouveau_gpio_isr(struct drm_device *dev, int idx, u32 line_mask) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - struct gpio_isr *isr; - - if (idx != 0) - return; - - spin_lock(&pgpio->lock); - list_for_each_entry(isr, &pgpio->isr, head) { - if (line_mask & (1 << isr->func.line)) { - if (isr->inhibit) - continue; - isr->inhibit = true; - schedule_work(&isr->work); - } - } - spin_unlock(&pgpio->lock); -} - -int -nouveau_gpio_isr_add(struct drm_device *dev, int idx, u8 tag, u8 line, - void (*handler)(void *, int), void *data) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - struct gpio_isr *isr; - unsigned long flags; - int ret; - - isr = kzalloc(sizeof(*isr), GFP_KERNEL); - if (!isr) - return -ENOMEM; - - ret = nouveau_gpio_find(dev, idx, tag, line, &isr->func); - if (ret) { - kfree(isr); - return ret; - } - - INIT_WORK(&isr->work, nouveau_gpio_isr_bh); - isr->dev = dev; - isr->handler = handler; - isr->data = data; - isr->idx = idx; - - spin_lock_irqsave(&pgpio->lock, flags); - list_add(&isr->head, &pgpio->isr); - spin_unlock_irqrestore(&pgpio->lock, flags); - return 0; -} - -void -nouveau_gpio_isr_del(struct drm_device *dev, int idx, u8 tag, u8 line, - void (*handler)(void *, int), void *data) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - struct gpio_isr *isr, *tmp; - struct gpio_func func; - unsigned long flags; - LIST_HEAD(tofree); - int ret; - - ret = nouveau_gpio_find(dev, idx, tag, line, &func); - if (ret == 0) { - spin_lock_irqsave(&pgpio->lock, flags); - list_for_each_entry_safe(isr, tmp, &pgpio->isr, head) { - if (memcmp(&isr->func, &func, sizeof(func)) || - isr->idx != idx || - isr->handler != handler || isr->data != data) - continue; - list_move(&isr->head, &tofree); - } - spin_unlock_irqrestore(&pgpio->lock, flags); - - list_for_each_entry_safe(isr, tmp, &tofree, head) { - flush_work(&isr->work); - kfree(isr); - } - } -} - -int -nouveau_gpio_create(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - - INIT_LIST_HEAD(&pgpio->isr); - spin_lock_init(&pgpio->lock); - - return nouveau_gpio_init(dev); -} - -void -nouveau_gpio_destroy(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - - nouveau_gpio_fini(dev); - BUG_ON(!list_empty(&pgpio->isr)); -} - -int -nouveau_gpio_init(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - int ret = 0; - - if (pgpio->init) - ret = pgpio->init(dev); - - return ret; -} - -void -nouveau_gpio_fini(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - - if (pgpio->fini) - pgpio->fini(dev); -} - -void -nouveau_gpio_reset(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - u8 *entry, version; - int ent = -1; - - while ((entry = dcb_gpio_entry(dev, 0, ++ent, &version))) { - u8 func = 0xff, line, defs, unk0, unk1; - if (version >= 0x41) { - defs = !!(entry[0] & 0x80); - line = entry[0] & 0x3f; - func = entry[1]; - unk0 = entry[2]; - unk1 = entry[3] & 0x1f; - } else - if (version >= 0x40) { - line = entry[0] & 0x1f; - func = entry[1]; - defs = !!(entry[3] & 0x01); - unk0 = !!(entry[3] & 0x02); - unk1 = !!(entry[3] & 0x04); - } else { - break; - } - - if (func == 0xff) - continue; - - nouveau_gpio_func_set(dev, func, defs); - - if (dev_priv->card_type >= NV_D0) { - nv_mask(dev, 0x00d610 + (line * 4), 0xff, unk0); - if (unk1--) - nv_mask(dev, 0x00d740 + (unk1 * 4), 0xff, line); - } else - if (dev_priv->card_type >= NV_50) { - static const u32 regs[] = { 0xe100, 0xe28c }; - u32 val = (unk1 << 16) | unk0; - u32 reg = regs[line >> 4]; line &= 0x0f; - - nv_mask(dev, reg, 0x00010001 << line, val << line); - } - } -} |