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goldfish: enable 64-bit tty driver 

Signed-off-by: Jun Tian <jun.j.tian@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jun Tian 2014-05-12 16:55:26 +01:00 committed by Greg Kroah-Hartman
parent ec5e34c074
commit b8658bc810
1 changed files with 9 additions and 0 deletions
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9
drivers/tty/goldfish.c
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@ -29,6 +29,9 @@ enum {
GOLDFISH_TTY_DATA_PTR = 0x10,
GOLDFISH_TTY_DATA_LEN = 0x14,
#ifdef CONFIG_64BIT
GOLDFISH_TTY_DATA_PTR_HIGH = 0x18,
#endif
GOLDFISH_TTY_CMD_INT_DISABLE = 0,
GOLDFISH_TTY_CMD_INT_ENABLE = 1,
@ -58,6 +61,9 @@ static void goldfish_tty_do_write(int line, const char *buf, unsigned count)
void __iomem *base = qtty->base;
spin_lock_irqsave(&qtty->lock, irq_flags);
writel((u32)buf, base + GOLDFISH_TTY_DATA_PTR);
#ifdef CONFIG_64BIT
writel((u32)((u64)buf >> 32), base + GOLDFISH_TTY_DATA_PTR_HIGH);
#endif
writel(count, base + GOLDFISH_TTY_DATA_LEN);
writel(GOLDFISH_TTY_CMD_WRITE_BUFFER, base + GOLDFISH_TTY_CMD);
spin_unlock_irqrestore(&qtty->lock, irq_flags);
@ -79,6 +85,9 @@ static irqreturn_t goldfish_tty_interrupt(int irq, void *dev_id)
count = tty_prepare_flip_string(&qtty->port, &buf, count);
spin_lock_irqsave(&qtty->lock, irq_flags);
writel((u32)buf, base + GOLDFISH_TTY_DATA_PTR);
#ifdef CONFIG_64BIT
writel((u32)((u64)buf >> 32), base + GOLDFISH_TTY_DATA_PTR_HIGH);
#endif
writel(count, base + GOLDFISH_TTY_DATA_LEN);
writel(GOLDFISH_TTY_CMD_READ_BUFFER, base + GOLDFISH_TTY_CMD);
spin_unlock_irqrestore(&qtty->lock, irq_flags);