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Message-ID: <1379946381-20125-10-git-send-email-pdeschrijver@nvidia.com>
Date: Mon, 23 Sep 2013 17:25:01 +0300
From: Peter De Schrijver <pdeschrijver@...dia.com>
To: Peter De Schrijver <pdeschrijver@...dia.com>
CC: Mike Turquette <mturquette@...aro.org>,
Stephen Warren <swarren@...dotorg.org>,
Prashant Gaikwad <pgaikwad@...dia.com>,
Thierry Reding <thierry.reding@...onic-design.de>,
Joseph Lo <josephl@...dia.com>,
Paul Walmsley <pwalmsley@...dia.com>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-tegra@...r.kernel.org>
Subject: [PATCH v2 09/12] clk: tegra: move PMC clocks to common file
Introduce a new file for PMC clocks common between several Tegra
SoCs and move Tegra114 to this new infrastructure.
Signed-off-by: Peter De Schrijver <pdeschrijver@...dia.com>
---
drivers/clk/tegra/Makefile | 1 +
drivers/clk/tegra/clk-tegra-pmc.c | 131 +++++++++++++++++++++++++++++++++++++
drivers/clk/tegra/clk-tegra114.c | 69 +-------------------
drivers/clk/tegra/clk.h | 2 +-
4 files changed, 134 insertions(+), 69 deletions(-)
create mode 100644 drivers/clk/tegra/clk-tegra-pmc.c
diff --git a/drivers/clk/tegra/Makefile b/drivers/clk/tegra/Makefile
index 304ea5d..f415246 100644
--- a/drivers/clk/tegra/Makefile
+++ b/drivers/clk/tegra/Makefile
@@ -8,6 +8,7 @@ obj-y += clk-pll-out.o
obj-y += clk-super.o
obj-y += clk-tegra-audio.o
obj-y += clk-tegra-periph.o
+obj-y += clk-tegra-pmc.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += clk-tegra20.o
obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += clk-tegra30.o
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += clk-tegra114.o
diff --git a/drivers/clk/tegra/clk-tegra-pmc.c b/drivers/clk/tegra/clk-tegra-pmc.c
new file mode 100644
index 0000000..2655acd
--- /dev/null
+++ b/drivers/clk/tegra/clk-tegra-pmc.c
@@ -0,0 +1,131 @@
+/*
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/delay.h>
+#include <linux/export.h>
+#include <linux/clk/tegra.h>
+
+#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, 0,
+ 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 */
+ 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;
+}
+
diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c
index 9bcdd29..19cd57b 100644
--- a/drivers/clk/tegra/clk-tegra114.c
+++ b/drivers/clk/tegra/clk-tegra114.c
@@ -173,7 +173,6 @@ static DEFINE_SPINLOCK(pll_d_lock);
static DEFINE_SPINLOCK(pll_d2_lock);
static DEFINE_SPINLOCK(pll_u_lock);
static DEFINE_SPINLOCK(pll_re_lock);
-static DEFINE_SPINLOCK(clk_out_lock);
static DEFINE_SPINLOCK(sysrate_lock);
static struct div_nmp pllxc_nmp = {
@@ -1094,72 +1093,6 @@ static void __init tegra114_pll_init(void __iomem *clk_base,
clks[TEGRA114_CLK_PLL_E_OUT0] = clk;
}
-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 void __init tegra114_pmc_clk_init(void __iomem *pmc_base)
-{
- struct clk *clk;
-
- /* clk_out_1 */
- clk = clk_register_mux(NULL, "clk_out_1_mux", clk_out1_parents,
- ARRAY_SIZE(clk_out1_parents), 0,
- pmc_base + PMC_CLK_OUT_CNTRL, 6, 3, 0,
- &clk_out_lock);
- clks[TEGRA114_CLK_CLK_OUT_1_MUX] = clk;
- clk = clk_register_gate(NULL, "clk_out_1", "clk_out_1_mux", 0,
- pmc_base + PMC_CLK_OUT_CNTRL, 2, 0,
- &clk_out_lock);
- clk_register_clkdev(clk, "extern1", "clk_out_1");
- clks[TEGRA114_CLK_CLK_OUT_1] = clk;
-
- /* clk_out_2 */
- clk = clk_register_mux(NULL, "clk_out_2_mux", clk_out2_parents,
- ARRAY_SIZE(clk_out2_parents), 0,
- pmc_base + PMC_CLK_OUT_CNTRL, 14, 3, 0,
- &clk_out_lock);
- clks[TEGRA114_CLK_CLK_OUT_2_MUX] = clk;
- clk = clk_register_gate(NULL, "clk_out_2", "clk_out_2_mux", 0,
- pmc_base + PMC_CLK_OUT_CNTRL, 10, 0,
- &clk_out_lock);
- clk_register_clkdev(clk, "extern2", "clk_out_2");
- clks[TEGRA114_CLK_CLK_OUT_2] = clk;
-
- /* clk_out_3 */
- clk = clk_register_mux(NULL, "clk_out_3_mux", clk_out3_parents,
- ARRAY_SIZE(clk_out3_parents), 0,
- pmc_base + PMC_CLK_OUT_CNTRL, 22, 3, 0,
- &clk_out_lock);
- clks[TEGRA114_CLK_CLK_OUT_3_MUX] = clk;
- clk = clk_register_gate(NULL, "clk_out_3", "clk_out_3_mux", 0,
- pmc_base + PMC_CLK_OUT_CNTRL, 18, 0,
- &clk_out_lock);
- clk_register_clkdev(clk, "extern3", "clk_out_3");
- clks[TEGRA114_CLK_CLK_OUT_3] = clk;
-
- /* blink */
- /* clear the blink timer register to directly output clk_32k */
- 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);
- 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);
- clks[TEGRA114_CLK_BLINK] = clk;
-
-}
-
static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4",
"pll_p", "pll_p_out2", "unused",
"clk_32k", "pll_m_out1" };
@@ -1505,7 +1438,7 @@ static void __init tegra114_clock_init(struct device_node *np)
tegra114_pll_init(clk_base, pmc_base);
tegra114_periph_clk_init(clk_base, pmc_base);
tegra_audio_clk_init(clk_base, pmc_base, tegra114_clks, NULL);
- tegra114_pmc_clk_init(pmc_base);
+ tegra_pmc_clk_init(pmc_base, tegra114_clks);
tegra114_super_clk_init(clk_base);
diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h
index e847aa9..3ce60c2 100644
--- a/drivers/clk/tegra/clk.h
+++ b/drivers/clk/tegra/clk.h
@@ -606,9 +606,9 @@ void tegra_add_of_provider(struct device_node *np);
void tegra_audio_clk_init(void __iomem *clk_base,
void __iomem *pmc_base, struct tegra_clk *tegra_clks,
struct tegra_clk_pll_freq_table *freq_table);
-
void tegra_periph_clk_init(void __iomem *clk_base, void __iomem *pmc_base,
struct tegra_clk *tegra_clks);
+void tegra_pmc_clk_init(void __iomem *pmc_base, struct tegra_clk *tegra_clks);
void tegra114_clock_tune_cpu_trimmers_high(void);
void tegra114_clock_tune_cpu_trimmers_low(void);
--
1.7.7.rc0.72.g4b5ea.dirty
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