diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-09 12:35:53 -0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-09 12:35:53 -0800 |
commit | 263a5c8e16c34199ddf6de3f102e789ffa3ee26e (patch) | |
tree | 4f049e339d522b2ab0ba3bed3ec217e4bbc83d35 /arch/arm/mach-shmobile/clock-sh73a0.c | |
parent | 54d20f006ceff1f2f1e69d0e54049b6c0765c039 (diff) | |
parent | 192cfd58774b4d17b2fe8bdc77d89c2ef4e0591d (diff) |
Merge 3.3-rc6 into driver-core-next
This was done to resolve a conflict in the drivers/base/cpu.c file.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm/mach-shmobile/clock-sh73a0.c')
-rw-r--r-- | arch/arm/mach-shmobile/clock-sh73a0.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/clock-sh73a0.c b/arch/arm/mach-shmobile/clock-sh73a0.c index afbead6a6e17..7727cca6136c 100644 --- a/arch/arm/mach-shmobile/clock-sh73a0.c +++ b/arch/arm/mach-shmobile/clock-sh73a0.c @@ -365,6 +365,114 @@ static struct clk div6_clks[DIV6_NR] = { dsi_parent, ARRAY_SIZE(dsi_parent), 12, 3), }; +/* DSI DIV */ +static unsigned long dsiphy_recalc(struct clk *clk) +{ + u32 value; + + value = __raw_readl(clk->mapping->base); + + /* FIXME */ + if (!(value & 0x000B8000)) + return clk->parent->rate; + + value &= 0x3f; + value += 1; + + if ((value < 12) || + (value > 33)) { + pr_err("DSIPHY has wrong value (%d)", value); + return 0; + } + + return clk->parent->rate / value; +} + +static long dsiphy_round_rate(struct clk *clk, unsigned long rate) +{ + return clk_rate_mult_range_round(clk, 12, 33, rate); +} + +static void dsiphy_disable(struct clk *clk) +{ + u32 value; + + value = __raw_readl(clk->mapping->base); + value &= ~0x000B8000; + + __raw_writel(value , clk->mapping->base); +} + +static int dsiphy_enable(struct clk *clk) +{ + u32 value; + int multi; + + value = __raw_readl(clk->mapping->base); + multi = (value & 0x3f) + 1; + + if ((multi < 12) || (multi > 33)) + return -EIO; + + __raw_writel(value | 0x000B8000, clk->mapping->base); + + return 0; +} + +static int dsiphy_set_rate(struct clk *clk, unsigned long rate) +{ + u32 value; + int idx; + + idx = rate / clk->parent->rate; + if ((idx < 12) || (idx > 33)) + return -EINVAL; + + idx += -1; + + value = __raw_readl(clk->mapping->base); + value = (value & ~0x3f) + idx; + + __raw_writel(value, clk->mapping->base); + + return 0; +} + +static struct clk_ops dsiphy_clk_ops = { + .recalc = dsiphy_recalc, + .round_rate = dsiphy_round_rate, + .set_rate = dsiphy_set_rate, + .enable = dsiphy_enable, + .disable = dsiphy_disable, +}; + +static struct clk_mapping dsi0phy_clk_mapping = { + .phys = DSI0PHYCR, + .len = 4, +}; + +static struct clk_mapping dsi1phy_clk_mapping = { + .phys = DSI1PHYCR, + .len = 4, +}; + +static struct clk dsi0phy_clk = { + .ops = &dsiphy_clk_ops, + .parent = &div6_clks[DIV6_DSI0P], /* late install */ + .mapping = &dsi0phy_clk_mapping, +}; + +static struct clk dsi1phy_clk = { + .ops = &dsiphy_clk_ops, + .parent = &div6_clks[DIV6_DSI1P], /* late install */ + .mapping = &dsi1phy_clk_mapping, +}; + +static struct clk *late_main_clks[] = { + &dsi0phy_clk, + &dsi1phy_clk, +}; + enum { MSTP001, MSTP129, MSTP128, MSTP127, MSTP126, MSTP125, MSTP118, MSTP116, MSTP100, MSTP219, @@ -429,6 +537,8 @@ static struct clk_lookup lookups[] = { CLKDEV_ICK_ID("dsit_clk", "sh-mipi-dsi.1", &div6_clks[DIV6_DSIT]), CLKDEV_ICK_ID("dsip_clk", "sh-mipi-dsi.0", &div6_clks[DIV6_DSI0P]), CLKDEV_ICK_ID("dsip_clk", "sh-mipi-dsi.1", &div6_clks[DIV6_DSI1P]), + CLKDEV_ICK_ID("dsiphy_clk", "sh-mipi-dsi.0", &dsi0phy_clk), + CLKDEV_ICK_ID("dsiphy_clk", "sh-mipi-dsi.1", &dsi1phy_clk), /* MSTP32 clocks */ CLKDEV_DEV_ID("i2c-sh_mobile.2", &mstp_clks[MSTP001]), /* I2C2 */ @@ -504,6 +614,9 @@ void __init sh73a0_clock_init(void) if (!ret) ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR); + for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++) + ret = clk_register(late_main_clks[k]); + clkdev_add_table(lookups, ARRAY_SIZE(lookups)); if (!ret) |