ARM: tegra: migrate to new clock code

Migrate Tegra clock support to drivers/clk/tegra, this involves
moving:
1. definition of tegra_cpu_car_ops to clk.c
2. definition of reset functions to clk-peripheral.c
3. change parent of cpu clock.
4. Remove legacy clock initialization.
5. Initialize clocks using DT.
6. Remove all instance of mach/clk.h

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
[swarren: use to_clk_periph_gate().]
Signed-off-by: Stephen Warren <swarren@nvidia.com>

8 files changed, 5 insertions, 128 deletions

diff --git a/arch/arm/mach-tegra/board-dt-tegra20.c b/arch/arm/mach-tegra/board-dt-tegra20.c
index e1f87dd..0c11b8a 100644
--- a/arch/arm/mach-tegra/board-dt-tegra20.c
+++ b/arch/arm/mach-tegra/board-dt-tegra20.c
@@ -42,7 +42,6 @@
 #include <asm/setup.h>
 
 #include "board.h"
-#include "clock.h"
 #include "common.h"
 #include "iomap.h"
 
@@ -104,37 +103,8 @@ static struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
 	{}
 };
 
-static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
-	/* name		parent		rate		enabled */
-	{ "uarta",	"pll_p",	216000000,	true },
-	{ "uartd",	"pll_p",	216000000,	true },
-	{ "usbd",	"clk_m",	12000000,	false },
-	{ "usb2",	"clk_m",	12000000,	false },
-	{ "usb3",	"clk_m",	12000000,	false },
-	{ "pll_a",      "pll_p_out1",   56448000,       true },
-	{ "pll_a_out0", "pll_a",        11289600,       true },
-	{ "cdev1",      NULL,           0,              true },
-	{ "blink",      "clk_32k",      32768,          true },
-	{ "i2s1",       "pll_a_out0",   11289600,       false},
-	{ "i2s2",       "pll_a_out0",   11289600,       false},
-	{ "sdmmc1",	"pll_p",	48000000,	false},
-	{ "sdmmc3",	"pll_p",	48000000,	false},
-	{ "sdmmc4",	"pll_p",	48000000,	false},
-	{ "spi",	"pll_p",	20000000,	false },
-	{ "sbc1",	"pll_p",	100000000,	false },
-	{ "sbc2",	"pll_p",	100000000,	false },
-	{ "sbc3",	"pll_p",	100000000,	false },
-	{ "sbc4",	"pll_p",	100000000,	false },
-	{ "host1x",	"pll_c",	150000000,	false },
-	{ "disp1",	"pll_p",	600000000,	false },
-	{ "disp2",	"pll_p",	600000000,	false },
-	{ NULL,		NULL,		0,		0},
-};
-
 static void __init tegra_dt_init(void)
 {
-	tegra_clk_init_from_table(tegra_dt_clk_init_table);
-
 	/*
 	 * Finished with the static registrations now; fill in the missing
 	 * devices
diff --git a/arch/arm/mach-tegra/board-dt-tegra30.c b/arch/arm/mach-tegra/board-dt-tegra30.c
index cfe5fc0..92f6014d 100644
--- a/arch/arm/mach-tegra/board-dt-tegra30.c
+++ b/arch/arm/mach-tegra/board-dt-tegra30.c
@@ -35,7 +35,6 @@
 #include <asm/hardware/gic.h>
 
 #include "board.h"
-#include "clock.h"
 #include "common.h"
 #include "iomap.h"
 
@@ -67,38 +66,8 @@ static struct of_dev_auxdata tegra30_auxdata_lookup[] __initdata = {
 	{}
 };
 
-static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
-	/* name		parent		rate		enabled */
-	{ "uarta",	"pll_p",	408000000,	true },
-	{ "pll_a",	"pll_p_out1",	564480000,	true },
-	{ "pll_a_out0",	"pll_a",	11289600,	true },
-	{ "extern1",	"pll_a_out0",	0,		true },
-	{ "clk_out_1",	"extern1",	0,		true },
-	{ "blink",	"clk_32k",	32768,		true },
-	{ "i2s0",	"pll_a_out0",	11289600,	false},
-	{ "i2s1",	"pll_a_out0",	11289600,	false},
-	{ "i2s2",	"pll_a_out0",	11289600,	false},
-	{ "i2s3",	"pll_a_out0",	11289600,	false},
-	{ "i2s4",	"pll_a_out0",	11289600,	false},
-	{ "sdmmc1",	"pll_p",	48000000,	false},
-	{ "sdmmc3",	"pll_p",	48000000,	false},
-	{ "sdmmc4",	"pll_p",	48000000,	false},
-	{ "sbc1",	"pll_p",	100000000,	false},
-	{ "sbc2",	"pll_p",	100000000,	false},
-	{ "sbc3",	"pll_p",	100000000,	false},
-	{ "sbc4",	"pll_p",	100000000,	false},
-	{ "sbc5",	"pll_p",	100000000,	false},
-	{ "sbc6",	"pll_p",	100000000,	false},
-	{ "host1x",	"pll_c",	150000000,	false},
-	{ "disp1",	"pll_p",	600000000,	false},
-	{ "disp2",	"pll_p",	600000000,	false},
-	{ NULL,		NULL,		0,		0},
-};
-
 static void __init tegra30_dt_init(void)
 {
-	tegra_clk_init_from_table(tegra_dt_clk_init_table);
-
 	of_platform_populate(NULL, of_default_bus_match_table,
 				tegra30_auxdata_lookup, NULL);
 }
diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c
index 8c0ff06..baa0c5b 100644
--- a/arch/arm/mach-tegra/clock.c
+++ b/arch/arm/mach-tegra/clock.c
@@ -31,9 +31,6 @@
 #include "board.h"
 #include "clock.h"
 
-/* Global data of Tegra CPU CAR ops */
-struct tegra_cpu_car_ops *tegra_cpu_car_ops;
-
 /*
  * Locking:
  *
@@ -131,22 +128,6 @@ void tegra_clk_init_from_table(struct tegra_clk_init_table *table)
 		tegra_clk_init_one_from_table(table);
 }
 
-void tegra_periph_reset_deassert(struct clk *c)
-{
-	struct clk_tegra *clk = to_clk_tegra(__clk_get_hw(c));
-	BUG_ON(!clk->reset);
-	clk->reset(__clk_get_hw(c), false);
-}
-EXPORT_SYMBOL(tegra_periph_reset_deassert);
-
-void tegra_periph_reset_assert(struct clk *c)
-{
-	struct clk_tegra *clk = to_clk_tegra(__clk_get_hw(c));
-	BUG_ON(!clk->reset);
-	clk->reset(__clk_get_hw(c), true);
-}
-EXPORT_SYMBOL(tegra_periph_reset_assert);
-
 /* Several extended clock configuration bits (e.g., clock routing, clock
  * phase control) are included in PLL and peripheral clock source
  * registers. */
diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
index 3efe80b..87dd69c 100644
--- a/arch/arm/mach-tegra/common.c
+++ b/arch/arm/mach-tegra/common.c
@@ -22,6 +22,7 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/of_irq.h>
+#include <linux/clk/tegra.h>
 
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/hardware/gic.h>
@@ -29,7 +30,6 @@
 #include <mach/powergate.h>
 
 #include "board.h"
-#include "clock.h"
 #include "common.h"
 #include "fuse.h"
 #include "iomap.h"
@@ -65,6 +65,7 @@ static const struct of_device_id tegra_dt_irq_match[] __initconst = {
 
 void __init tegra_dt_init_irq(void)
 {
+	tegra_clocks_init();
 	tegra_init_irq();
 	of_irq_init(tegra_dt_irq_match);
 }
@@ -80,43 +81,6 @@ void tegra_assert_system_reset(char mode, const char *cmd)
 	writel_relaxed(reg, reset);
 }
 
-#ifdef CONFIG_ARCH_TEGRA_2x_SOC
-static __initdata struct tegra_clk_init_table tegra20_clk_init_table[] = {
-	/* name		parent		rate		enabled */
-	{ "clk_m",	NULL,		0,		true },
-	{ "pll_p",	"clk_m",	216000000,	true },
-	{ "pll_p_out1",	"pll_p",	28800000,	true },
-	{ "pll_p_out2",	"pll_p",	48000000,	true },
-	{ "pll_p_out3",	"pll_p",	72000000,	true },
-	{ "pll_p_out4",	"pll_p",	24000000,	true },
-	{ "pll_c",	"clk_m",	600000000,	true },
-	{ "pll_c_out1",	"pll_c",	120000000,	true },
-	{ "sclk",	"pll_c_out1",	120000000,	true },
-	{ "hclk",	"sclk",		120000000,	true },
-	{ "pclk",	"hclk",		60000000,	true },
-	{ "csite",	NULL,		0,		true },
-	{ "emc",	NULL,		0,		true },
-	{ "cpu",	NULL,		0,		true },
-	{ NULL,		NULL,		0,		0},
-};
-#endif
-
-#ifdef CONFIG_ARCH_TEGRA_3x_SOC
-static __initdata struct tegra_clk_init_table tegra30_clk_init_table[] = {
-	/* name		parent		rate		enabled */
-	{ "clk_m",	NULL,		0,		true },
-	{ "pll_p",	"pll_ref",	408000000,	true },
-	{ "pll_p_out1",	"pll_p",	9600000,	true },
-	{ "pll_p_out4",	"pll_p",	102000000,	true },
-	{ "sclk",	"pll_p_out4",	102000000,	true },
-	{ "hclk",	"sclk",		102000000,	true },
-	{ "pclk",	"hclk",		51000000,	true },
-	{ "csite",	NULL,		0,		true },
-	{ NULL,		NULL,		0,		0},
-};
-#endif
-
-
 static void __init tegra_init_cache(void)
 {
 #ifdef CONFIG_CACHE_L2X0
@@ -141,8 +105,6 @@ void __init tegra20_init_early(void)
 	tegra_cpu_reset_handler_init();
 	tegra_apb_io_init();
 	tegra_init_fuse();
-	tegra2_init_clocks();
-	tegra_clk_init_from_table(tegra20_clk_init_table);
 	tegra_init_cache();
 	tegra_pmc_init();
 	tegra_powergate_init();
@@ -155,8 +117,6 @@ void __init tegra30_init_early(void)
 	tegra_cpu_reset_handler_init();
 	tegra_apb_io_init();
 	tegra_init_fuse();
-	tegra30_init_clocks();
-	tegra_clk_init_from_table(tegra30_clk_init_table);
 	tegra_init_cache();
 	tegra_pmc_init();
 	tegra_powergate_init();
diff --git a/arch/arm/mach-tegra/cpu-tegra.c b/arch/arm/mach-tegra/cpu-tegra.c
index 85d4a23..ebffed6 100644
--- a/arch/arm/mach-tegra/cpu-tegra.c
+++ b/arch/arm/mach-tegra/cpu-tegra.c
@@ -266,7 +266,7 @@ static int __init tegra_cpufreq_init(void)
 	if (IS_ERR(pll_x_clk))
 		return PTR_ERR(pll_x_clk);
 
-	pll_p_clk = clk_get_sys(NULL, "pll_p");
+	pll_p_clk = clk_get_sys(NULL, "pll_p_cclk");
 	if (IS_ERR(pll_p_clk))
 		return PTR_ERR(pll_p_clk);
 
diff --git a/arch/arm/mach-tegra/include/mach/clk.h b/arch/arm/mach-tegra/include/mach/clk.h
index 95f3a54..85bbf10 100644
--- a/arch/arm/mach-tegra/include/mach/clk.h
+++ b/arch/arm/mach-tegra/include/mach/clk.h
@@ -31,9 +31,6 @@ enum tegra_clk_ex_param {
 	TEGRA_CLK_PLLD_MIPI_MUX_SEL,
 };
 
-void tegra_periph_reset_deassert(struct clk *c);
-void tegra_periph_reset_assert(struct clk *c);
-
 #ifndef CONFIG_COMMON_CLK
 unsigned long clk_get_rate_all_locked(struct clk *c);
 #endif
diff --git a/arch/arm/mach-tegra/pcie.c b/arch/arm/mach-tegra/pcie.c
index bffcd64..b60165f 100644
--- a/arch/arm/mach-tegra/pcie.c
+++ b/arch/arm/mach-tegra/pcie.c
@@ -33,11 +33,11 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/export.h>
+#include <linux/clk/tegra.h>
 
 #include <asm/sizes.h>
 #include <asm/mach/pci.h>
 
-#include <mach/clk.h>
 #include <mach/powergate.h>
 
 #include "board.h"
diff --git a/arch/arm/mach-tegra/powergate.c b/arch/arm/mach-tegra/powergate.c
index 2cc1185..c6bc8f8 100644
--- a/arch/arm/mach-tegra/powergate.c
+++ b/arch/arm/mach-tegra/powergate.c
@@ -26,8 +26,8 @@
 #include <linux/io.h>
 #include <linux/seq_file.h>
 #include <linux/spinlock.h>
+#include <linux/clk/tegra.h>
 
-#include <mach/clk.h>
 #include <mach/powergate.h>
 
 #include "fuse.h"