Merge tag 'imx-soc-3.14' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/soc

From Shawn Guo:
i.MX SoC changes for 3.14:
 - Add the initial i.MX50 SoC support
 - Support device tree boot for i.MX35
 - Move imx5 clock driver to use macros for clock ID
 - Some random updates and non-critical fixes on clock drivers
 - A few defconfig updates and minor cleanups

* tag 'imx-soc-3.14' of git://git.linaro.org/people/shawnguo/linux-2.6: (37 commits)
  ARM: imx: improve the comment of CCM lpm SW workaround
  ARM: imx: improve status check of clock gate
  ARM: imx: add necessary interface for pfd
  ARM: imx_v6_v7_defconfig: Select CONFIG_REGULATOR_PFUZE100
  ARM: imx_v6_v7_defconfig: Select MX35 and MX50 device tree support
  ARM: imx: Add cpu frequency scaling support
  ARM i.MX35: Add devicetree support.
  ARM: imx: update imx_v6_v7_defconfig
  ARM: imx6sl: Add missing spba clock to clock tree
  ARM: imx6sl: Add missing pll4_audio_div to the clock tree
  ARM: imx6: Derive spdif clock from pll3_pfd3_454m
  ARM: imx: use __initconst for const init definition
  ARM i.MX5: fix obvious typo in ldb_di0_gate clk definition
  ARM i.MX5: set CAN peripheral clock to 24 MHz parent
  ARM: imx: pllv1: Fix PLL calculation for i.MX27
  ARM i.MX5: fix "shift" value for lp_apm_sel on i.MX50 and i.MX53
  ARM: imx: imx53: Add SATA PHY clock
  ARM: imx_v6_v7_defconfig: Enable STMPE touchscreen
  ARM: imx: rename IMX6SL_CLK_CLK_END to IMX6SL_CLK_END
  ARM: imx: select PINCTRL at sub-architecure level
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/clk-pfd.c b/arch/arm/mach-imx/clk-pfd.c
index e2ed4160f32..0b0f6f66ec5 100644
--- a/arch/arm/mach-imx/clk-pfd.c
+++ b/arch/arm/mach-imx/clk-pfd.c
@@ -109,12 +109,23 @@ static int clk_pfd_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
+static int clk_pfd_is_enabled(struct clk_hw *hw)
+{
+	struct clk_pfd *pfd = to_clk_pfd(hw);
+
+	if (readl_relaxed(pfd->reg) & (1 << ((pfd->idx + 1) * 8 - 1)))
+		return 0;
+
+	return 1;
+}
+
 static const struct clk_ops clk_pfd_ops = {
 	.enable		= clk_pfd_enable,
 	.disable	= clk_pfd_disable,
 	.recalc_rate	= clk_pfd_recalc_rate,
 	.round_rate	= clk_pfd_round_rate,
 	.set_rate	= clk_pfd_set_rate,
+	.is_enabled     = clk_pfd_is_enabled,
 };
 
 struct clk *imx_clk_pfd(const char *name, const char *parent_name,