From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/clk/tegra/clk-tegra-pmc.c | 132 +++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 kernel/drivers/clk/tegra/clk-tegra-pmc.c (limited to 'kernel/drivers/clk/tegra/clk-tegra-pmc.c') diff --git a/kernel/drivers/clk/tegra/clk-tegra-pmc.c b/kernel/drivers/clk/tegra/clk-tegra-pmc.c new file mode 100644 index 000000000..08b21c1ee --- /dev/null +++ b/kernel/drivers/clk/tegra/clk-tegra-pmc.c @@ -0,0 +1,132 @@ +/* + * Copyright (c) 2012, 2013, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "clk.h" +#include "clk-id.h" + +#define PMC_CLK_OUT_CNTRL 0x1a8 +#define PMC_DPD_PADS_ORIDE 0x1c +#define PMC_DPD_PADS_ORIDE_BLINK_ENB 20 +#define PMC_CTRL 0 +#define PMC_CTRL_BLINK_ENB 7 +#define PMC_BLINK_TIMER 0x40 + +struct pmc_clk_init_data { + char *mux_name; + char *gate_name; + const char **parents; + int num_parents; + int mux_id; + int gate_id; + char *dev_name; + u8 mux_shift; + u8 gate_shift; +}; + +#define PMC_CLK(_num, _mux_shift, _gate_shift)\ + {\ + .mux_name = "clk_out_" #_num "_mux",\ + .gate_name = "clk_out_" #_num,\ + .parents = clk_out ##_num ##_parents,\ + .num_parents = ARRAY_SIZE(clk_out ##_num ##_parents),\ + .mux_id = tegra_clk_clk_out_ ##_num ##_mux,\ + .gate_id = tegra_clk_clk_out_ ##_num,\ + .dev_name = "extern" #_num,\ + .mux_shift = _mux_shift,\ + .gate_shift = _gate_shift,\ + } + +static DEFINE_SPINLOCK(clk_out_lock); + +static const char *clk_out1_parents[] = { "clk_m", "clk_m_div2", + "clk_m_div4", "extern1", +}; + +static const char *clk_out2_parents[] = { "clk_m", "clk_m_div2", + "clk_m_div4", "extern2", +}; + +static const char *clk_out3_parents[] = { "clk_m", "clk_m_div2", + "clk_m_div4", "extern3", +}; + +static struct pmc_clk_init_data pmc_clks[] = { + PMC_CLK(1, 6, 2), + PMC_CLK(2, 14, 10), + PMC_CLK(3, 22, 18), +}; + +void __init tegra_pmc_clk_init(void __iomem *pmc_base, + struct tegra_clk *tegra_clks) +{ + struct clk *clk; + struct clk **dt_clk; + int i; + + for (i = 0; i < ARRAY_SIZE(pmc_clks); i++) { + struct pmc_clk_init_data *data; + + data = pmc_clks + i; + + dt_clk = tegra_lookup_dt_id(data->mux_id, tegra_clks); + if (!dt_clk) + continue; + + clk = clk_register_mux(NULL, data->mux_name, data->parents, + data->num_parents, CLK_SET_RATE_NO_REPARENT, + pmc_base + PMC_CLK_OUT_CNTRL, data->mux_shift, + 3, 0, &clk_out_lock); + *dt_clk = clk; + + + dt_clk = tegra_lookup_dt_id(data->gate_id, tegra_clks); + if (!dt_clk) + continue; + + clk = clk_register_gate(NULL, data->gate_name, data->mux_name, + 0, pmc_base + PMC_CLK_OUT_CNTRL, + data->gate_shift, 0, &clk_out_lock); + *dt_clk = clk; + clk_register_clkdev(clk, data->dev_name, data->gate_name); + } + + /* blink */ + writel_relaxed(0, pmc_base + PMC_BLINK_TIMER); + clk = clk_register_gate(NULL, "blink_override", "clk_32k", 0, + pmc_base + PMC_DPD_PADS_ORIDE, + PMC_DPD_PADS_ORIDE_BLINK_ENB, 0, NULL); + + dt_clk = tegra_lookup_dt_id(tegra_clk_blink, tegra_clks); + if (!dt_clk) + return; + + clk = clk_register_gate(NULL, "blink", "blink_override", 0, + pmc_base + PMC_CTRL, + PMC_CTRL_BLINK_ENB, 0, NULL); + clk_register_clkdev(clk, "blink", NULL); + *dt_clk = clk; +} + -- cgit 1.2.3-korg