From e499ada829cf769ac6f16627cd9f09b855a7fd6d Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Wed, 14 Dec 2011 01:01:14 +0900 Subject: sh: pfc: Unlock register support Add PFC support for a 32-bit unlock register. Needed to drive the r8a7779 PFC that comes with a funky PMMR register. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt --- drivers/sh/pfc.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'drivers/sh') diff --git a/drivers/sh/pfc.c b/drivers/sh/pfc.c index f975f4a33439..522c6c46d1be 100644 --- a/drivers/sh/pfc.c +++ b/drivers/sh/pfc.c @@ -210,7 +210,7 @@ static void write_config_reg(struct pinmux_info *gpioc, unsigned long field, unsigned long value) { void __iomem *mapped_reg; - unsigned long mask, pos; + unsigned long mask, pos, data; config_reg_helper(gpioc, crp, field, &mapped_reg, &mask, &pos); @@ -221,17 +221,15 @@ static void write_config_reg(struct pinmux_info *gpioc, mask = ~(mask << pos); value = value << pos; - switch (crp->reg_width) { - case 8: - iowrite8((ioread8(mapped_reg) & mask) | value, mapped_reg); - break; - case 16: - iowrite16((ioread16(mapped_reg) & mask) | value, mapped_reg); - break; - case 32: - iowrite32((ioread32(mapped_reg) & mask) | value, mapped_reg); - break; - } + data = gpio_read_raw_reg(mapped_reg, crp->reg_width); + data &= mask; + data |= value; + + if (gpioc->unlock_reg) + gpio_write_raw_reg(pfc_phys_to_virt(gpioc, gpioc->unlock_reg), + 32, ~data); + + gpio_write_raw_reg(mapped_reg, crp->reg_width, data); } static int setup_data_reg(struct pinmux_info *gpioc, unsigned gpio) -- cgit v1.2.3