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Date: Thu, 22 Nov 2012 20:32:30 +0900
From: Cho KyongHo <pullip.cho@...sung.com>
To: linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org,
iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 01/12] ARM: EXYNOS: Add clk_ops for gating clocks of System
MMU
Touching some System MMU needs its master devices' clock to be enabled
before. This commit adds clk_ops.set_parent of gating clocks of System
MMU to ensure gating clocks of System MMU's mater devices are enabled
when enabling gating clocks of System MMU.
Signed-off-by: KyongHo Cho <pullip.cho@...sung.com>
---
arch/arm/mach-exynos/clock-exynos5.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/arch/arm/mach-exynos/clock-exynos5.c b/arch/arm/mach-exynos/clock-exynos5.c
index e48d7c2..a86e88e 100644
--- a/arch/arm/mach-exynos/clock-exynos5.c
+++ b/arch/arm/mach-exynos/clock-exynos5.c
@@ -614,6 +614,16 @@ static struct clksrc_clk exynos5_clk_aclk_300_gscl = {
.reg_src = { .reg = EXYNOS5_CLKSRC_TOP3, .shift = 10, .size = 1 },
};
+static int exynos5_gate_clk_set_parent(struct clk *clk, struct clk *parent)
+{
+ clk->parent = parent;
+ return 0;
+}
+
+static struct clk_ops exynos5_gate_clk_ops = {
+ .set_parent = exynos5_gate_clk_set_parent
+};
+
static struct clk exynos5_init_clocks_off[] = {
{
.name = "timers",
@@ -855,71 +865,85 @@ static struct clk exynos5_init_clocks_off[] = {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(mfc_l, 0),
.enable = &exynos5_clk_ip_mfc_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 1),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(mfc_r, 1),
.enable = &exynos5_clk_ip_mfc_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 2),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(tv, 2),
.enable = &exynos5_clk_ip_disp1_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 9)
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(jpeg, 3),
.enable = &exynos5_clk_ip_gen_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 7),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(rot, 4),
.enable = &exynos5_clk_ip_gen_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 6)
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(gsc0, 5),
.enable = &exynos5_clk_ip_gscl_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 7),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(gsc1, 6),
.enable = &exynos5_clk_ip_gscl_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 8),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(gsc2, 7),
.enable = &exynos5_clk_ip_gscl_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 9),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(gsc3, 8),
.enable = &exynos5_clk_ip_gscl_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 10),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(isp, 9),
.enable = &exynos5_clk_ip_isp0_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (0x3F << 8),
}, {
.name = SYSMMU_CLOCK_NAME2,
.devname = SYSMMU_CLOCK_DEVNAME(isp, 9),
.enable = &exynos5_clk_ip_isp1_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (0xF << 4),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(camif0, 12),
.enable = &exynos5_clk_ip_gscl_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 11),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(camif1, 13),
.enable = &exynos5_clk_ip_gscl_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 12),
}, {
.name = SYSMMU_CLOCK_NAME,
.devname = SYSMMU_CLOCK_DEVNAME(2d, 14),
.enable = &exynos5_clk_ip_acp_ctrl,
+ .ops = &exynos5_gate_clk_ops,
.ctrlbit = (1 << 7)
}
};
--
1.8.0
--
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