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authorLinus Torvalds <torvalds@linux-foundation.org>2012-02-24 20:57:22 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-02-24 20:57:22 +0400
commit37e79cbf7d45451fb4d1213184e484723c25c65a (patch)
tree6a1ef497215365ec25c367d87feca3712ad66cb3 /arch/arm/mach-shmobile/clock-sh73a0.c
parent0e69e084017f015555ae584972386296c8c1bf1c (diff)
parent7372a4cd6c6fe07ae9d7d0340717736fba863580 (diff)
downloadlinux-37e79cbf7d45451fb4d1213184e484723c25c65a.tar.xz
Merge tag 'rmobile-for-linus' of git://github.com/pmundt/linux-sh
SH/R-Mobile fixes for 3.3-rc5 * tag 'rmobile-for-linus' of git://github.com/pmundt/linux-sh: arch/arm/mach-shmobile/board-ag5evm.c: included linux/dma-mapping.h twice ARM: mach-shmobile: r8a7779 PFC IPSR4 fix ARM: mach-shmobile: sh73a0 PSTR 32-bit access fix ARM: mach-shmobile: add GPIO-to-IRQ translation to sh7372 ARM: mach-shmobile: clock-sh73a0: add DSIxPHY clock support arm: fix compile failure in mach-shmobile/board-ag5evm.c ARM: mach-shmobile: mackerel: add ak4642 amixer settings on comment ARM: mach-shmobile: mackerel: use renesas_usbhs instead of r8a66597_hcd ARM: mach-shmobile: simplify MMCIF DMA configuration ARM: mach-shmobile: IRQ driven GPIO key support for Kota2 ARM: mach-shmobile: sh73a0 IRQ sparse alloc fix ARM: mach-shmobile: sh73a0 PINT IRQ base fix
Diffstat (limited to 'arch/arm/mach-shmobile/clock-sh73a0.c')
-rw-r--r--arch/arm/mach-shmobile/clock-sh73a0.c113
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)