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b43: fix logic in GPIO init
Add some comments by the way Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -2719,32 +2719,37 @@ static int b43_gpio_init(struct b43_wldev *dev)
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if (dev->dev->chip_id == 0x4301) {
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mask |= 0x0060;
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set |= 0x0060;
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} else if (dev->dev->chip_id == 0x5354) {
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/* Don't allow overtaking buttons GPIOs */
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set &= 0x2; /* 0x2 is LED GPIO on BCM5354 */
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}
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if (dev->dev->chip_id == 0x5354)
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set &= 0xff02;
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if (0 /* FIXME: conditional unknown */ ) {
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b43_write16(dev, B43_MMIO_GPIO_MASK,
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b43_read16(dev, B43_MMIO_GPIO_MASK)
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| 0x0100);
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mask |= 0x0180;
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set |= 0x0180;
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/* BT Coexistance Input */
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mask |= 0x0080;
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set |= 0x0080;
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/* BT Coexistance Out */
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mask |= 0x0100;
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set |= 0x0100;
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}
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if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL) {
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/* PA is controlled by gpio 9, let ucode handle it */
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b43_write16(dev, B43_MMIO_GPIO_MASK,
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b43_read16(dev, B43_MMIO_GPIO_MASK)
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| 0x0200);
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mask |= 0x0200;
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set |= 0x0200;
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}
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if (dev->dev->core_rev >= 2)
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mask |= 0x0010; /* FIXME: This is redundant. */
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switch (dev->dev->bus_type) {
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#ifdef CONFIG_B43_BCMA
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case B43_BUS_BCMA:
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bcma_cc_write32(&dev->dev->bdev->bus->drv_cc, BCMA_CC_GPIOCTL,
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(bcma_cc_read32(&dev->dev->bdev->bus->drv_cc,
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BCMA_CC_GPIOCTL) & mask) | set);
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BCMA_CC_GPIOCTL) & ~mask) | set);
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break;
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#endif
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#ifdef CONFIG_B43_SSB
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@ -2753,7 +2758,7 @@ static int b43_gpio_init(struct b43_wldev *dev)
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if (gpiodev)
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ssb_write32(gpiodev, B43_GPIO_CONTROL,
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(ssb_read32(gpiodev, B43_GPIO_CONTROL)
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& mask) | set);
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& ~mask) | set);
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break;
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#endif
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}
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