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authorDavid S. Miller <davem@davemloft.net>2009-06-15 03:02:23 -0700
committerDavid S. Miller <davem@davemloft.net>2009-06-15 03:02:23 -0700
commit9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (patch)
tree8d104ec2a459346b99413b0b77421ca7b9936c1a /arch/arm/mach-imx/clock.c
parentca44d6e60f9de26281fda203f58b570e1748c015 (diff)
parent45e3e1935e2857c54783291107d33323b3ef33c8 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: Documentation/feature-removal-schedule.txt drivers/scsi/fcoe/fcoe.c net/core/drop_monitor.c net/core/net-traces.c
Diffstat (limited to 'arch/arm/mach-imx/clock.c')
-rw-r--r--arch/arm/mach-imx/clock.c210
1 files changed, 0 insertions, 210 deletions
diff --git a/arch/arm/mach-imx/clock.c b/arch/arm/mach-imx/clock.c
deleted file mode 100644
index cf332aeb942..00000000000
--- a/arch/arm/mach-imx/clock.c
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * Copyright (C) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/list.h>
-#include <linux/math64.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-
-/*
- * Very simple approach: We can't disable clocks, so we do
- * not need refcounting
- */
-
-struct clk {
- struct list_head node;
- const char *name;
- unsigned long (*get_rate)(void);
-};
-
-/*
- * get the system pll clock in Hz
- *
- * mfi + mfn / (mfd +1)
- * f = 2 * f_ref * --------------------
- * pd + 1
- */
-static unsigned long imx_decode_pll(unsigned int pll, u32 f_ref)
-{
- unsigned long long ll;
- unsigned long quot;
-
- u32 mfi = (pll >> 10) & 0xf;
- u32 mfn = pll & 0x3ff;
- u32 mfd = (pll >> 16) & 0x3ff;
- u32 pd = (pll >> 26) & 0xf;
-
- mfi = mfi <= 5 ? 5 : mfi;
-
- ll = 2 * (unsigned long long)f_ref *
- ((mfi << 16) + (mfn << 16) / (mfd + 1));
- quot = (pd + 1) * (1 << 16);
- ll += quot / 2;
- do_div(ll, quot);
- return (unsigned long)ll;
-}
-
-static unsigned long imx_get_system_clk(void)
-{
- u32 f_ref = (CSCR & CSCR_SYSTEM_SEL) ? 16000000 : (CLK32 * 512);
-
- return imx_decode_pll(SPCTL0, f_ref);
-}
-
-static unsigned long imx_get_mcu_clk(void)
-{
- return imx_decode_pll(MPCTL0, CLK32 * 512);
-}
-
-/*
- * get peripheral clock 1 ( UART[12], Timer[12], PWM )
- */
-static unsigned long imx_get_perclk1(void)
-{
- return imx_get_system_clk() / (((PCDR) & 0xf)+1);
-}
-
-/*
- * get peripheral clock 2 ( LCD, SD, SPI[12] )
- */
-static unsigned long imx_get_perclk2(void)
-{
- return imx_get_system_clk() / (((PCDR>>4) & 0xf)+1);
-}
-
-/*
- * get peripheral clock 3 ( SSI )
- */
-static unsigned long imx_get_perclk3(void)
-{
- return imx_get_system_clk() / (((PCDR>>16) & 0x7f)+1);
-}
-
-/*
- * get hclk ( SDRAM, CSI, Memory Stick, I2C, DMA )
- */
-static unsigned long imx_get_hclk(void)
-{
- return imx_get_system_clk() / (((CSCR>>10) & 0xf)+1);
-}
-
-static struct clk clk_system_clk = {
- .name = "system_clk",
- .get_rate = imx_get_system_clk,
-};
-
-static struct clk clk_hclk = {
- .name = "hclk",
- .get_rate = imx_get_hclk,
-};
-
-static struct clk clk_mcu_clk = {
- .name = "mcu_clk",
- .get_rate = imx_get_mcu_clk,
-};
-
-static struct clk clk_perclk1 = {
- .name = "perclk1",
- .get_rate = imx_get_perclk1,
-};
-
-static struct clk clk_uart_clk = {
- .name = "uart_clk",
- .get_rate = imx_get_perclk1,
-};
-
-static struct clk clk_perclk2 = {
- .name = "perclk2",
- .get_rate = imx_get_perclk2,
-};
-
-static struct clk clk_perclk3 = {
- .name = "perclk3",
- .get_rate = imx_get_perclk3,
-};
-
-static struct clk *clks[] = {
- &clk_perclk1,
- &clk_perclk2,
- &clk_perclk3,
- &clk_system_clk,
- &clk_hclk,
- &clk_mcu_clk,
- &clk_uart_clk,
-};
-
-static LIST_HEAD(clocks);
-static DEFINE_MUTEX(clocks_mutex);
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
- struct clk *p, *clk = ERR_PTR(-ENOENT);
-
- mutex_lock(&clocks_mutex);
- list_for_each_entry(p, &clocks, node) {
- if (!strcmp(p->name, id)) {
- clk = p;
- goto found;
- }
- }
-
-found:
- mutex_unlock(&clocks_mutex);
-
- return clk;
-}
-EXPORT_SYMBOL(clk_get);
-
-void clk_put(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_put);
-
-int clk_enable(struct clk *clk)
-{
- return 0;
-}
-EXPORT_SYMBOL(clk_enable);
-
-void clk_disable(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_disable);
-
-unsigned long clk_get_rate(struct clk *clk)
-{
- return clk->get_rate();
-}
-EXPORT_SYMBOL(clk_get_rate);
-
-int imx_clocks_init(void)
-{
- int i;
-
- mutex_lock(&clocks_mutex);
- for (i = 0; i < ARRAY_SIZE(clks); i++)
- list_add(&clks[i]->node, &clocks);
- mutex_unlock(&clocks_mutex);
-
- return 0;
-}
-