ARM: EXYNOS: Add ARCH_EXYNOS and reorganize arch/arm/mach-exynos

The arch/arm/mach-exynos4 directory (CONFIG_ARCH_EXYNOS4) has
made for plaforms based on EXYNOS4 SoCs. But since upcoming
Samsung's SoCs such as EXYNOS5 (ARM Cortex A15) can reuse most
codes in current mach-exynos4, one mach-exynos directory will
be used for them.

This patch changes to CONFIG_ARCH_EXYNOS (arch/arm/mach-exynos)
but keeps original CONFIG_ARCH_EXYNOS4 in mach-exynos/Kconfig to
avoid changing in driver side.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 139 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos/clock-exynos4210.c b/arch/arm/mach-exynos/clock-exynos4210.c
new file mode 100644
index 000000000000..b9d5ef670eb4
--- /dev/null
+++ b/arch/arm/mach-exynos/clock-exynos4210.c
@@ -0,0 +1,139 @@
+/*
+ * linux/arch/arm/mach-exynos4/clock-exynos4210.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * EXYNOS4210 - Clock support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/syscore_ops.h>
+
+#include <plat/cpu-freq.h>
+#include <plat/clock.h>
+#include <plat/cpu.h>
+#include <plat/pll.h>
+#include <plat/s5p-clock.h>
+#include <plat/clock-clksrc.h>
+#include <plat/exynos4.h>
+#include <plat/pm.h>
+
+#include <mach/hardware.h>
+#include <mach/map.h>
+#include <mach/regs-clock.h>
+#include <mach/exynos4-clock.h>
+
+static struct sleep_save exynos4210_clock_save[] = {
+        SAVE_ITEM(S5P_CLKSRC_IMAGE),
+        SAVE_ITEM(S5P_CLKSRC_LCD1),
+        SAVE_ITEM(S5P_CLKDIV_IMAGE),
+        SAVE_ITEM(S5P_CLKDIV_LCD1),
+        SAVE_ITEM(S5P_CLKSRC_MASK_LCD1),
+        SAVE_ITEM(S5P_CLKGATE_IP_IMAGE_4210),
+        SAVE_ITEM(S5P_CLKGATE_IP_LCD1),
+        SAVE_ITEM(S5P_CLKGATE_IP_PERIR_4210),
+};
+
+static struct clksrc_clk *sysclks[] = {
+        /* nothing here yet */
+};
+
+static int exynos4_clksrc_mask_lcd1_ctrl(struct clk *clk, int enable)
+{
+        return s5p_gatectrl(S5P_CLKSRC_MASK_LCD1, clk, enable);
+}
+
+static struct clksrc_clk clksrcs[] = {
+        {
+                .clk            = {
+                        .name           = "sclk_sata",
+                        .id             = -1,
+                        .enable         = exynos4_clksrc_mask_fsys_ctrl,
+                        .ctrlbit        = (1 << 24),
+                },
+                .sources = &clkset_mout_corebus,
+                .reg_src = { .reg = S5P_CLKSRC_FSYS, .shift = 24, .size = 1 },
+                .reg_div = { .reg = S5P_CLKDIV_FSYS0, .shift = 20, .size = 4 },
+        }, {
+                .clk            = {
+                        .name           = "sclk_fimd",
+                        .devname        = "exynos4-fb.1",
+                        .enable         = exynos4_clksrc_mask_lcd1_ctrl,
+                        .ctrlbit        = (1 << 0),
+                },
+                .sources = &clkset_group,
+                .reg_src = { .reg = S5P_CLKSRC_LCD1, .shift = 0, .size = 4 },
+                .reg_div = { .reg = S5P_CLKDIV_LCD1, .shift = 0, .size = 4 },
+        },
+};
+
+static struct clk init_clocks_off[] = {
+        {
+                .name           = "sataphy",
+                .id             = -1,
+                .parent         = &clk_aclk_133.clk,
+                .enable         = exynos4_clk_ip_fsys_ctrl,
+                .ctrlbit        = (1 << 3),
+        }, {
+                .name           = "sata",
+                .id             = -1,
+                .parent         = &clk_aclk_133.clk,
+                .enable         = exynos4_clk_ip_fsys_ctrl,
+                .ctrlbit        = (1 << 10),
+        }, {
+                .name           = "fimd",
+                .devname        = "exynos4-fb.1",
+                .enable         = exynos4_clk_ip_lcd1_ctrl,
+                .ctrlbit        = (1 << 0),
+        },
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int exynos4210_clock_suspend(void)
+{
+        s3c_pm_do_save(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save));
+
+        return 0;
+}
+
+static void exynos4210_clock_resume(void)
+{
+        s3c_pm_do_restore_core(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save));
+}
+
+#else
+#define exynos4210_clock_suspend NULL
+#define exynos4210_clock_resume NULL
+#endif
+
+struct syscore_ops exynos4210_clock_syscore_ops = {
+        .suspend        = exynos4210_clock_suspend,
+        .resume         = exynos4210_clock_resume,
+};
+
+void __init exynos4210_register_clocks(void)
+{
+        int ptr;
+
+        clk_mout_mpll.reg_src.reg = S5P_CLKSRC_CPU;
+        clk_mout_mpll.reg_src.shift = 8;
+        clk_mout_mpll.reg_src.size = 1;
+
+        for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
+                s3c_register_clksrc(sysclks[ptr], 1);
+
+        s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
+
+        s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
+        s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
+
+        register_syscore_ops(&exynos4210_clock_syscore_ops);
+}