aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-s5p64x0/clock.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-s5p64x0/clock.c')
-rw-r--r--arch/arm/mach-s5p64x0/clock.c236
1 files changed, 0 insertions, 236 deletions
diff --git a/arch/arm/mach-s5p64x0/clock.c b/arch/arm/mach-s5p64x0/clock.c
deleted file mode 100644
index 57e718957ef3..000000000000
--- a/arch/arm/mach-s5p64x0/clock.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/* linux/arch/arm/mach-s5p64x0/clock.c
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- *
- * S5P64X0 - 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/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/device.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <mach/map.h>
-#include <mach/regs-clock.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 "common.h"
-
-struct clksrc_clk clk_mout_apll = {
- .clk = {
- .name = "mout_apll",
- .id = -1,
- },
- .sources = &clk_src_apll,
- .reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 0, .size = 1 },
-};
-
-struct clksrc_clk clk_mout_mpll = {
- .clk = {
- .name = "mout_mpll",
- .id = -1,
- },
- .sources = &clk_src_mpll,
- .reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 1, .size = 1 },
-};
-
-struct clksrc_clk clk_mout_epll = {
- .clk = {
- .name = "mout_epll",
- .id = -1,
- },
- .sources = &clk_src_epll,
- .reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 2, .size = 1 },
-};
-
-enum perf_level {
- L0 = 532*1000,
- L1 = 266*1000,
- L2 = 133*1000,
-};
-
-static const u32 clock_table[][3] = {
- /*{ARM_CLK, DIVarm, DIVhclk}*/
- {L0 * 1000, (0 << ARM_DIV_RATIO_SHIFT), (3 << S5P64X0_CLKDIV0_HCLK_SHIFT)},
- {L1 * 1000, (1 << ARM_DIV_RATIO_SHIFT), (1 << S5P64X0_CLKDIV0_HCLK_SHIFT)},
- {L2 * 1000, (3 << ARM_DIV_RATIO_SHIFT), (0 << S5P64X0_CLKDIV0_HCLK_SHIFT)},
-};
-
-static unsigned long s5p64x0_armclk_get_rate(struct clk *clk)
-{
- unsigned long rate = clk_get_rate(clk->parent);
- u32 clkdiv;
-
- /* divisor mask starts at bit0, so no need to shift */
- clkdiv = __raw_readl(ARM_CLK_DIV) & ARM_DIV_MASK;
-
- return rate / (clkdiv + 1);
-}
-
-static unsigned long s5p64x0_armclk_round_rate(struct clk *clk,
- unsigned long rate)
-{
- u32 iter;
-
- for (iter = 1 ; iter < ARRAY_SIZE(clock_table) ; iter++) {
- if (rate > clock_table[iter][0])
- return clock_table[iter-1][0];
- }
-
- return clock_table[ARRAY_SIZE(clock_table) - 1][0];
-}
-
-static int s5p64x0_armclk_set_rate(struct clk *clk, unsigned long rate)
-{
- u32 round_tmp;
- u32 iter;
- u32 clk_div0_tmp;
- u32 cur_rate = clk->ops->get_rate(clk);
- unsigned long flags;
-
- round_tmp = clk->ops->round_rate(clk, rate);
- if (round_tmp == cur_rate)
- return 0;
-
-
- for (iter = 0 ; iter < ARRAY_SIZE(clock_table) ; iter++) {
- if (round_tmp == clock_table[iter][0])
- break;
- }
-
- if (iter >= ARRAY_SIZE(clock_table))
- iter = ARRAY_SIZE(clock_table) - 1;
-
- local_irq_save(flags);
- if (cur_rate > round_tmp) {
- /* Frequency Down */
- clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK);
- clk_div0_tmp |= clock_table[iter][1];
- __raw_writel(clk_div0_tmp, ARM_CLK_DIV);
-
- clk_div0_tmp = __raw_readl(ARM_CLK_DIV) &
- ~(S5P64X0_CLKDIV0_HCLK_MASK);
- clk_div0_tmp |= clock_table[iter][2];
- __raw_writel(clk_div0_tmp, ARM_CLK_DIV);
-
-
- } else {
- /* Frequency Up */
- clk_div0_tmp = __raw_readl(ARM_CLK_DIV) &
- ~(S5P64X0_CLKDIV0_HCLK_MASK);
- clk_div0_tmp |= clock_table[iter][2];
- __raw_writel(clk_div0_tmp, ARM_CLK_DIV);
-
- clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK);
- clk_div0_tmp |= clock_table[iter][1];
- __raw_writel(clk_div0_tmp, ARM_CLK_DIV);
- }
- local_irq_restore(flags);
-
- clk->rate = clock_table[iter][0];
-
- return 0;
-}
-
-static struct clk_ops s5p64x0_clkarm_ops = {
- .get_rate = s5p64x0_armclk_get_rate,
- .set_rate = s5p64x0_armclk_set_rate,
- .round_rate = s5p64x0_armclk_round_rate,
-};
-
-struct clksrc_clk clk_armclk = {
- .clk = {
- .name = "armclk",
- .id = 1,
- .parent = &clk_mout_apll.clk,
- .ops = &s5p64x0_clkarm_ops,
- },
- .reg_div = { .reg = S5P64X0_CLK_DIV0, .shift = 0, .size = 4 },
-};
-
-struct clksrc_clk clk_dout_mpll = {
- .clk = {
- .name = "dout_mpll",
- .id = -1,
- .parent = &clk_mout_mpll.clk,
- },
- .reg_div = { .reg = S5P64X0_CLK_DIV0, .shift = 4, .size = 1 },
-};
-
-static struct clk *clkset_hclk_low_list[] = {
- &clk_mout_apll.clk,
- &clk_mout_mpll.clk,
-};
-
-struct clksrc_sources clkset_hclk_low = {
- .sources = clkset_hclk_low_list,
- .nr_sources = ARRAY_SIZE(clkset_hclk_low_list),
-};
-
-int s5p64x0_pclk_ctrl(struct clk *clk, int enable)
-{
- return s5p_gatectrl(S5P64X0_CLK_GATE_PCLK, clk, enable);
-}
-
-int s5p64x0_hclk0_ctrl(struct clk *clk, int enable)
-{
- return s5p_gatectrl(S5P64X0_CLK_GATE_HCLK0, clk, enable);
-}
-
-int s5p64x0_hclk1_ctrl(struct clk *clk, int enable)
-{
- return s5p_gatectrl(S5P64X0_CLK_GATE_HCLK1, clk, enable);
-}
-
-int s5p64x0_sclk_ctrl(struct clk *clk, int enable)
-{
- return s5p_gatectrl(S5P64X0_CLK_GATE_SCLK0, clk, enable);
-}
-
-int s5p64x0_sclk1_ctrl(struct clk *clk, int enable)
-{
- return s5p_gatectrl(S5P64X0_CLK_GATE_SCLK1, clk, enable);
-}
-
-int s5p64x0_mem_ctrl(struct clk *clk, int enable)
-{
- return s5p_gatectrl(S5P64X0_CLK_GATE_MEM0, clk, enable);
-}
-
-int s5p64x0_clk48m_ctrl(struct clk *clk, int enable)
-{
- unsigned long flags;
- u32 val;
-
- /* can't rely on clock lock, this register has other usages */
- local_irq_save(flags);
-
- val = __raw_readl(S5P64X0_OTHERS);
- if (enable)
- val |= S5P64X0_OTHERS_USB_SIG_MASK;
- else
- val &= ~S5P64X0_OTHERS_USB_SIG_MASK;
-
- __raw_writel(val, S5P64X0_OTHERS);
-
- local_irq_restore(flags);
-
- return 0;
-}