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authorAnton Arapov <anton@redhat.com>2012-08-07 11:21:50 +0200
committerAnton Arapov <anton@redhat.com>2012-08-07 12:52:25 +0200
commit1d44b6f3fcf6058fb7c960b7558766967e8028f7 (patch)
tree53d88547c973ba048d233091a3f91f3173ad01df /arch/arm/plat-spear
parentd91eda5d7b0383e6a0c83e0146ff141ff3b1355b (diff)
downloadkernel-uprobes-1d44b6f3fcf6058fb7c960b7558766967e8028f7.tar.gz
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fedora kernel: 222b075b3ff0d9e88aa9353e3c80667756ed7361v3.5.0-4
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/arm/plat-spear')
-rw-r--r--arch/arm/plat-spear/Kconfig16
-rw-r--r--arch/arm/plat-spear/Makefile5
-rw-r--r--arch/arm/plat-spear/clock.c1005
-rw-r--r--arch/arm/plat-spear/include/plat/clock.h249
-rw-r--r--arch/arm/plat-spear/include/plat/debug-macro.S4
-rw-r--r--arch/arm/plat-spear/include/plat/hardware.h17
-rw-r--r--arch/arm/plat-spear/include/plat/padmux.h92
-rw-r--r--arch/arm/plat-spear/include/plat/pl080.h21
-rw-r--r--arch/arm/plat-spear/include/plat/shirq.h2
-rw-r--r--arch/arm/plat-spear/include/plat/timex.h2
-rw-r--r--arch/arm/plat-spear/include/plat/uncompress.h4
-rw-r--r--arch/arm/plat-spear/padmux.c164
-rw-r--r--arch/arm/plat-spear/pl080.c80
-rw-r--r--arch/arm/plat-spear/restart.c9
-rw-r--r--arch/arm/plat-spear/shirq.c2
-rw-r--r--arch/arm/plat-spear/time.c48
16 files changed, 163 insertions, 1557 deletions
diff --git a/arch/arm/plat-spear/Kconfig b/arch/arm/plat-spear/Kconfig
index 1bb3dbce881..4404f82d597 100644
--- a/arch/arm/plat-spear/Kconfig
+++ b/arch/arm/plat-spear/Kconfig
@@ -8,10 +8,23 @@ choice
prompt "ST SPEAr Family"
default ARCH_SPEAR3XX
+config ARCH_SPEAR13XX
+ bool "ST SPEAr13xx with Device Tree"
+ select ARM_GIC
+ select CPU_V7
+ select USE_OF
+ select HAVE_SMP
+ select MIGHT_HAVE_CACHE_L2X0
+ select PINCTRL
+ help
+ Supports for ARM's SPEAR13XX family
+
config ARCH_SPEAR3XX
- bool "SPEAr3XX"
+ bool "ST SPEAr3xx with Device Tree"
select ARM_VIC
select CPU_ARM926T
+ select USE_OF
+ select PINCTRL
help
Supports for ARM's SPEAR3XX family
@@ -25,6 +38,7 @@ config ARCH_SPEAR6XX
endchoice
# Adding SPEAr machine specific configuration files
+source "arch/arm/mach-spear13xx/Kconfig"
source "arch/arm/mach-spear3xx/Kconfig"
source "arch/arm/mach-spear6xx/Kconfig"
diff --git a/arch/arm/plat-spear/Makefile b/arch/arm/plat-spear/Makefile
index e0f2e5b9530..2607bd05c52 100644
--- a/arch/arm/plat-spear/Makefile
+++ b/arch/arm/plat-spear/Makefile
@@ -3,6 +3,7 @@
#
# Common support
-obj-y := clock.o restart.o time.o
+obj-y := restart.o time.o
-obj-$(CONFIG_ARCH_SPEAR3XX) += shirq.o padmux.o
+obj-$(CONFIG_ARCH_SPEAR3XX) += pl080.o shirq.o
+obj-$(CONFIG_ARCH_SPEAR6XX) += pl080.o
diff --git a/arch/arm/plat-spear/clock.c b/arch/arm/plat-spear/clock.c
deleted file mode 100644
index 67dd00381ea..00000000000
--- a/arch/arm/plat-spear/clock.c
+++ /dev/null
@@ -1,1005 +0,0 @@
-/*
- * arch/arm/plat-spear/clock.c
- *
- * Clock framework for SPEAr platform
- *
- * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/bug.h>
-#include <linux/clk.h>
-#include <linux/debugfs.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/list.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <plat/clock.h>
-
-static DEFINE_SPINLOCK(clocks_lock);
-static LIST_HEAD(root_clks);
-#ifdef CONFIG_DEBUG_FS
-static LIST_HEAD(clocks);
-#endif
-
-static void propagate_rate(struct clk *, int on_init);
-#ifdef CONFIG_DEBUG_FS
-static int clk_debugfs_reparent(struct clk *);
-#endif
-
-static int generic_clk_enable(struct clk *clk)
-{
- unsigned int val;
-
- if (!clk->en_reg)
- return -EFAULT;
-
- val = readl(clk->en_reg);
- if (unlikely(clk->flags & RESET_TO_ENABLE))
- val &= ~(1 << clk->en_reg_bit);
- else
- val |= 1 << clk->en_reg_bit;
-
- writel(val, clk->en_reg);
-
- return 0;
-}
-
-static void generic_clk_disable(struct clk *clk)
-{
- unsigned int val;
-
- if (!clk->en_reg)
- return;
-
- val = readl(clk->en_reg);
- if (unlikely(clk->flags & RESET_TO_ENABLE))
- val |= 1 << clk->en_reg_bit;
- else
- val &= ~(1 << clk->en_reg_bit);
-
- writel(val, clk->en_reg);
-}
-
-/* generic clk ops */
-static struct clkops generic_clkops = {
- .enable = generic_clk_enable,
- .disable = generic_clk_disable,
-};
-
-/* returns current programmed clocks clock info structure */
-static struct pclk_info *pclk_info_get(struct clk *clk)
-{
- unsigned int val, i;
- struct pclk_info *info = NULL;
-
- val = (readl(clk->pclk_sel->pclk_sel_reg) >> clk->pclk_sel_shift)
- & clk->pclk_sel->pclk_sel_mask;
-
- for (i = 0; i < clk->pclk_sel->pclk_count; i++) {
- if (clk->pclk_sel->pclk_info[i].pclk_val == val)
- info = &clk->pclk_sel->pclk_info[i];
- }
-
- return info;
-}
-
-/*
- * Set Update pclk, and pclk_info of clk and add clock sibling node to current
- * parents children list
- */
-static void clk_reparent(struct clk *clk, struct pclk_info *pclk_info)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&clocks_lock, flags);
- list_del(&clk->sibling);
- list_add(&clk->sibling, &pclk_info->pclk->children);
-
- clk->pclk = pclk_info->pclk;
- spin_unlock_irqrestore(&clocks_lock, flags);
-
-#ifdef CONFIG_DEBUG_FS
- clk_debugfs_reparent(clk);
-#endif
-}
-
-static void do_clk_disable(struct clk *clk)
-{
- if (!clk)
- return;
-
- if (!clk->usage_count) {
- WARN_ON(1);
- return;
- }
-
- clk->usage_count--;
-
- if (clk->usage_count == 0) {
- /*
- * Surely, there are no active childrens or direct users
- * of this clock
- */
- if (clk->pclk)
- do_clk_disable(clk->pclk);
-
- if (clk->ops && clk->ops->disable)
- clk->ops->disable(clk);
- }
-}
-
-static int do_clk_enable(struct clk *clk)
-{
- int ret = 0;
-
- if (!clk)
- return -EFAULT;
-
- if (clk->usage_count == 0) {
- if (clk->pclk) {
- ret = do_clk_enable(clk->pclk);
- if (ret)
- goto err;
- }
- if (clk->ops && clk->ops->enable) {
- ret = clk->ops->enable(clk);
- if (ret) {
- if (clk->pclk)
- do_clk_disable(clk->pclk);
- goto err;
- }
- }
- /*
- * Since the clock is going to be used for the first
- * time please reclac
- */
- if (clk->recalc) {
- ret = clk->recalc(clk);
- if (ret)
- goto err;
- }
- }
- clk->usage_count++;
-err:
- return ret;
-}
-
-/*
- * clk_enable - inform the system when the clock source should be running.
- * @clk: clock source
- *
- * If the clock can not be enabled/disabled, this should return success.
- *
- * Returns success (0) or negative errno.
- */
-int clk_enable(struct clk *clk)
-{
- unsigned long flags;
- int ret = 0;
-
- spin_lock_irqsave(&clocks_lock, flags);
- ret = do_clk_enable(clk);
- spin_unlock_irqrestore(&clocks_lock, flags);
- return ret;
-}
-EXPORT_SYMBOL(clk_enable);
-
-/*
- * clk_disable - inform the system when the clock source is no longer required.
- * @clk: clock source
- *
- * Inform the system that a clock source is no longer required by
- * a driver and may be shut down.
- *
- * Implementation detail: if the clock source is shared between
- * multiple drivers, clk_enable() calls must be balanced by the
- * same number of clk_disable() calls for the clock source to be
- * disabled.
- */
-void clk_disable(struct clk *clk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&clocks_lock, flags);
- do_clk_disable(clk);
- spin_unlock_irqrestore(&clocks_lock, flags);
-}
-EXPORT_SYMBOL(clk_disable);
-
-/**
- * clk_get_rate - obtain the current clock rate (in Hz) for a clock source.
- * This is only valid once the clock source has been enabled.
- * @clk: clock source
- */
-unsigned long clk_get_rate(struct clk *clk)
-{
- unsigned long flags, rate;
-
- spin_lock_irqsave(&clocks_lock, flags);
- rate = clk->rate;
- spin_unlock_irqrestore(&clocks_lock, flags);
-
- return rate;
-}
-EXPORT_SYMBOL(clk_get_rate);
-
-/**
- * clk_set_parent - set the parent clock source for this clock
- * @clk: clock source
- * @parent: parent clock source
- *
- * Returns success (0) or negative errno.
- */
-int clk_set_parent(struct clk *clk, struct clk *parent)
-{
- int i, found = 0, val = 0;
- unsigned long flags;
-
- if (!clk || !parent)
- return -EFAULT;
- if (clk->pclk == parent)
- return 0;
- if (!clk->pclk_sel)
- return -EPERM;
-
- /* check if requested parent is in clk parent list */
- for (i = 0; i < clk->pclk_sel->pclk_count; i++) {
- if (clk->pclk_sel->pclk_info[i].pclk == parent) {
- found = 1;
- break;
- }
- }
-
- if (!found)
- return -EINVAL;
-
- spin_lock_irqsave(&clocks_lock, flags);
- /* reflect parent change in hardware */
- val = readl(clk->pclk_sel->pclk_sel_reg);
- val &= ~(clk->pclk_sel->pclk_sel_mask << clk->pclk_sel_shift);
- val |= clk->pclk_sel->pclk_info[i].pclk_val << clk->pclk_sel_shift;
- writel(val, clk->pclk_sel->pclk_sel_reg);
- spin_unlock_irqrestore(&clocks_lock, flags);
-
- /* reflect parent change in software */
- clk_reparent(clk, &clk->pclk_sel->pclk_info[i]);
-
- propagate_rate(clk, 0);
- return 0;
-}
-EXPORT_SYMBOL(clk_set_parent);
-
-/**
- * clk_set_rate - set the clock rate for a clock source
- * @clk: clock source
- * @rate: desired clock rate in Hz
- *
- * Returns success (0) or negative errno.
- */
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
- unsigned long flags;
- int ret = -EINVAL;
-
- if (!clk || !rate)
- return -EFAULT;
-
- if (clk->set_rate) {
- spin_lock_irqsave(&clocks_lock, flags);
- ret = clk->set_rate(clk, rate);
- if (!ret)
- /* if successful -> propagate */
- propagate_rate(clk, 0);
- spin_unlock_irqrestore(&clocks_lock, flags);
- } else if (clk->pclk) {
- u32 mult = clk->div_factor ? clk->div_factor : 1;
- ret = clk_set_rate(clk->pclk, mult * rate);
- }
-
- return ret;
-}
-EXPORT_SYMBOL(clk_set_rate);
-
-/* registers clock in platform clock framework */
-void clk_register(struct clk_lookup *cl)
-{
- struct clk *clk;
- unsigned long flags;
-
- if (!cl || !cl->clk)
- return;
- clk = cl->clk;
-
- spin_lock_irqsave(&clocks_lock, flags);
-
- INIT_LIST_HEAD(&clk->children);
- if (clk->flags & ALWAYS_ENABLED)
- clk->ops = NULL;
- else if (!clk->ops)
- clk->ops = &generic_clkops;
-
- /* root clock don't have any parents */
- if (!clk->pclk && !clk->pclk_sel) {
- list_add(&clk->sibling, &root_clks);
- } else if (clk->pclk && !clk->pclk_sel) {
- /* add clocks with only one parent to parent's children list */
- list_add(&clk->sibling, &clk->pclk->children);
- } else {
- /* clocks with more than one parent */
- struct pclk_info *pclk_info;
-
- pclk_info = pclk_info_get(clk);
- if (!pclk_info) {
- pr_err("CLKDEV: invalid pclk info of clk with"
- " %s dev_id and %s con_id\n",
- cl->dev_id, cl->con_id);
- } else {
- clk->pclk = pclk_info->pclk;
- list_add(&clk->sibling, &pclk_info->pclk->children);
- }
- }
-
- spin_unlock_irqrestore(&clocks_lock, flags);
-
- /* debugfs specific */
-#ifdef CONFIG_DEBUG_FS
- list_add(&clk->node, &clocks);
- clk->cl = cl;
-#endif
-
- /* add clock to arm clockdev framework */
- clkdev_add(cl);
-}
-
-/**
- * propagate_rate - recalculate and propagate all clocks to children
- * @pclk: parent clock required to be propogated
- * @on_init: flag for enabling clocks which are ENABLED_ON_INIT.
- *
- * Recalculates all children clocks
- */
-void propagate_rate(struct clk *pclk, int on_init)
-{
- struct clk *clk, *_temp;
- int ret = 0;
-
- list_for_each_entry_safe(clk, _temp, &pclk->children, sibling) {
- if (clk->recalc) {
- ret = clk->recalc(clk);
- /*
- * recalc will return error if clk out is not programmed
- * In this case configure default rate.
- */
- if (ret && clk->set_rate)
- clk->set_rate(clk, 0);
- }
- propagate_rate(clk, on_init);
-
- if (!on_init)
- continue;
-
- /* Enable clks enabled on init, in software view */
- if (clk->flags & ENABLED_ON_INIT)
- do_clk_enable(clk);
- }
-}
-
-/**
- * round_rate_index - return closest programmable rate index in rate_config tbl
- * @clk: ptr to clock structure
- * @drate: desired rate
- * @rate: final rate will be returned in this variable only.
- *
- * Finds index in rate_config for highest clk rate which is less than
- * requested rate. If there is no clk rate lesser than requested rate then
- * -EINVAL is returned. This routine assumes that rate_config is written
- * in incrementing order of clk rates.
- * If drate passed is zero then default rate is programmed.
- */
-static int
-round_rate_index(struct clk *clk, unsigned long drate, unsigned long *rate)
-{
- unsigned long tmp = 0, prev_rate = 0;
- int index;
-
- if (!clk->calc_rate)
- return -EFAULT;
-
- if (!drate)
- return -EINVAL;
-
- /*
- * This loops ends on two conditions:
- * - as soon as clk is found with rate greater than requested rate.
- * - if all clks in rate_config are smaller than requested rate.
- */
- for (index = 0; index < clk->rate_config.count; index++) {
- prev_rate = tmp;
- tmp = clk->calc_rate(clk, index);
- if (drate < tmp) {
- index--;
- break;
- }
- }
- /* return if can't find suitable clock */
- if (index < 0) {
- index = -EINVAL;
- *rate = 0;
- } else if (index == clk->rate_config.count) {
- /* program with highest clk rate possible */
- index = clk->rate_config.count - 1;
- *rate = tmp;
- } else
- *rate = prev_rate;
-
- return index;
-}
-
-/**
- * clk_round_rate - adjust a rate to the exact rate a clock can provide
- * @clk: clock source
- * @rate: desired clock rate in Hz
- *
- * Returns rounded clock rate in Hz, or negative errno.
- */
-long clk_round_rate(struct clk *clk, unsigned long drate)
-{
- long rate = 0;
- int index;
-
- /*
- * propagate call to parent who supports calc_rate. Similar approach is
- * used in clk_set_rate.
- */
- if (!clk->calc_rate) {
- u32 mult;
- if (!clk->pclk)
- return clk->rate;
-
- mult = clk->div_factor ? clk->div_factor : 1;
- return clk_round_rate(clk->pclk, mult * drate) / mult;
- }
-
- index = round_rate_index(clk, drate, &rate);
- if (index >= 0)
- return rate;
- else
- return index;
-}
-EXPORT_SYMBOL(clk_round_rate);
-
-/*All below functions are called with lock held */
-
-/*
- * Calculates pll clk rate for specific value of mode, m, n and p
- *
- * In normal mode
- * rate = (2 * M[15:8] * Fin)/(N * 2^P)
- *
- * In Dithered mode
- * rate = (2 * M[15:0] * Fin)/(256 * N * 2^P)
- */
-unsigned long pll_calc_rate(struct clk *clk, int index)
-{
- unsigned long rate = clk->pclk->rate;
- struct pll_rate_tbl *tbls = clk->rate_config.tbls;
- unsigned int mode;
-
- mode = tbls[index].mode ? 256 : 1;
- return (((2 * rate / 10000) * tbls[index].m) /
- (mode * tbls[index].n * (1 << tbls[index].p))) * 10000;
-}
-
-/*
- * calculates current programmed rate of pll1
- *
- * In normal mode
- * rate = (2 * M[15:8] * Fin)/(N * 2^P)
- *
- * In Dithered mode
- * rate = (2 * M[15:0] * Fin)/(256 * N * 2^P)
- */
-int pll_clk_recalc(struct clk *clk)
-{
- struct pll_clk_config *config = clk->private_data;
- unsigned int num = 2, den = 0, val, mode = 0;
-
- mode = (readl(config->mode_reg) >> config->masks->mode_shift) &
- config->masks->mode_mask;
-
- val = readl(config->cfg_reg);
- /* calculate denominator */
- den = (val >> config->masks->div_p_shift) & config->masks->div_p_mask;
- den = 1 << den;
- den *= (val >> config->masks->div_n_shift) & config->masks->div_n_mask;
-
- /* calculate numerator & denominator */
- if (!mode) {
- /* Normal mode */
- num *= (val >> config->masks->norm_fdbk_m_shift) &
- config->masks->norm_fdbk_m_mask;
- } else {
- /* Dithered mode */
- num *= (val >> config->masks->dith_fdbk_m_shift) &
- config->masks->dith_fdbk_m_mask;
- den *= 256;
- }
-
- if (!den)
- return -EINVAL;
-
- clk->rate = (((clk->pclk->rate/10000) * num) / den) * 10000;
- return 0;
-}
-
-/*
- * Configures new clock rate of pll
- */
-int pll_clk_set_rate(struct clk *clk, unsigned long desired_rate)
-{
- struct pll_rate_tbl *tbls = clk->rate_config.tbls;
- struct pll_clk_config *config = clk->private_data;
- unsigned long val, rate;
- int i;
-
- i = round_rate_index(clk, desired_rate, &rate);
- if (i < 0)
- return i;
-
- val = readl(config->mode_reg) &
- ~(config->masks->mode_mask << config->masks->mode_shift);
- val |= (tbls[i].mode & config->masks->mode_mask) <<
- config->masks->mode_shift;
- writel(val, config->mode_reg);
-
- val = readl(config->cfg_reg) &
- ~(config->masks->div_p_mask << config->masks->div_p_shift);
- val |= (tbls[i].p & config->masks->div_p_mask) <<
- config->masks->div_p_shift;
- val &= ~(config->masks->div_n_mask << config->masks->div_n_shift);
- val |= (tbls[i].n & config->masks->div_n_mask) <<
- config->masks->div_n_shift;
- val &= ~(config->masks->dith_fdbk_m_mask <<
- config->masks->dith_fdbk_m_shift);
- if (tbls[i].mode)
- val |= (tbls[i].m & config->masks->dith_fdbk_m_mask) <<
- config->masks->dith_fdbk_m_shift;
- else
- val |= (tbls[i].m & config->masks->norm_fdbk_m_mask) <<
- config->masks->norm_fdbk_m_shift;
-
- writel(val, config->cfg_reg);
-
- clk->rate = rate;
-
- return 0;
-}
-
-/*
- * Calculates ahb, apb clk rate for specific value of div
- */
-unsigned long bus_calc_rate(struct clk *clk, int index)
-{
- unsigned long rate = clk->pclk->rate;
- struct bus_rate_tbl *tbls = clk->rate_config.tbls;
-
- return rate / (tbls[index].div + 1);
-}
-
-/* calculates current programmed rate of ahb or apb bus */
-int bus_clk_recalc(struct clk *clk)
-{
- struct bus_clk_config *config = clk->private_data;
- unsigned int div;
-
- div = ((readl(config->reg) >> config->masks->shift) &
- config->masks->mask) + 1;
-
- if (!div)
- return -EINVAL;
-
- clk->rate = (unsigned long)clk->pclk->rate / div;
- return 0;
-}
-
-/* Configures new clock rate of AHB OR APB bus */
-int bus_clk_set_rate(struct clk *clk, unsigned long desired_rate)
-{
- struct bus_rate_tbl *tbls = clk->rate_config.tbls;
- struct bus_clk_config *config = clk->private_data;
- unsigned long val, rate;
- int i;
-
- i = round_rate_index(clk, desired_rate, &rate);
- if (i < 0)
- return i;
-
- val = readl(config->reg) &
- ~(config->masks->mask << config->masks->shift);
- val |= (tbls[i].div & config->masks->mask) << config->masks->shift;
- writel(val, config->reg);
-
- clk->rate = rate;
-
- return 0;
-}
-
-/*
- * gives rate for different values of eq, x and y
- *
- * Fout from synthesizer can be given from two equations:
- * Fout1 = (Fin * X/Y)/2 EQ1
- * Fout2 = Fin * X/Y EQ2
- */
-unsigned long aux_calc_rate(struct clk *clk, int index)
-{
- unsigned long rate = clk->pclk->rate;
- struct aux_rate_tbl *tbls = clk->rate_config.tbls;
- u8 eq = tbls[index].eq ? 1 : 2;
-
- return (((rate/10000) * tbls[index].xscale) /
- (tbls[index].yscale * eq)) * 10000;
-}
-
-/*
- * calculates current programmed rate of auxiliary synthesizers
- * used by: UART, FIRDA
- *
- * Fout from synthesizer can be given from two equations:
- * Fout1 = (Fin * X/Y)/2
- * Fout2 = Fin * X/Y
- *
- * Selection of eqn 1 or 2 is programmed in register
- */
-int aux_clk_recalc(struct clk *clk)
-{
- struct aux_clk_config *config = clk->private_data;
- unsigned int num = 1, den = 1, val, eqn;
-
- val = readl(config->synth_reg);
-
- eqn = (val >> config->masks->eq_sel_shift) &
- config->masks->eq_sel_mask;
- if (eqn == config->masks->eq1_mask)
- den *= 2;
-
- /* calculate numerator */
- num = (val >> config->masks->xscale_sel_shift) &
- config->masks->xscale_sel_mask;
-
- /* calculate denominator */
- den *= (val >> config->masks->yscale_sel_shift) &
- config->masks->yscale_sel_mask;
-
- if (!den)
- return -EINVAL;
-
- clk->rate = (((clk->pclk->rate/10000) * num) / den) * 10000;
- return 0;
-}
-
-/* Configures new clock rate of auxiliary synthesizers used by: UART, FIRDA*/
-int aux_clk_set_rate(struct clk *clk, unsigned long desired_rate)
-{
- struct aux_rate_tbl *tbls = clk->rate_config.tbls;
- struct aux_clk_config *config = clk->private_data;
- unsigned long val, rate;
- int i;
-
- i = round_rate_index(clk, desired_rate, &rate);
- if (i < 0)
- return i;
-
- val = readl(config->synth_reg) &
- ~(config->masks->eq_sel_mask << config->masks->eq_sel_shift);
- val |= (tbls[i].eq & config->masks->eq_sel_mask) <<
- config->masks->eq_sel_shift;
- val &= ~(config->masks->xscale_sel_mask <<
- config->masks->xscale_sel_shift);
- val |= (tbls[i].xscale & config->masks->xscale_sel_mask) <<
- config->masks->xscale_sel_shift;
- val &= ~(config->masks->yscale_sel_mask <<
- config->masks->yscale_sel_shift);
- val |= (tbls[i].yscale & config->masks->yscale_sel_mask) <<
- config->masks->yscale_sel_shift;
- writel(val, config->synth_reg);
-
- clk->rate = rate;
-
- return 0;
-}
-
-/*
- * Calculates gpt clk rate for different values of mscale and nscale
- *
- * Fout= Fin/((2 ^ (N+1)) * (M+1))
- */
-unsigned long gpt_calc_rate(struct clk *clk, int index)
-{
- unsigned long rate = clk->pclk->rate;
- struct gpt_rate_tbl *tbls = clk->rate_config.tbls;
-
- return rate / ((1 << (tbls[index].nscale + 1)) *
- (tbls[index].mscale + 1));
-}
-
-/*
- * calculates current programmed rate of gpt synthesizers
- * Fout from synthesizer can be given from below equations:
- * Fout= Fin/((2 ^ (N+1)) * (M+1))
- */
-int gpt_clk_recalc(struct clk *clk)
-{
- struct gpt_clk_config *config = clk->private_data;
- unsigned int div = 1, val;
-
- val = readl(config->synth_reg);
- div += (val >> config->masks->mscale_sel_shift) &
- config->masks->mscale_sel_mask;
- div *= 1 << (((val >> config->masks->nscale_sel_shift) &
- config->masks->nscale_sel_mask) + 1);
-
- if (!div)
- return -EINVAL;
-
- clk->rate = (unsigned long)clk->pclk->rate / div;
- return 0;
-}
-
-/* Configures new clock rate of gptiliary synthesizers used by: UART, FIRDA*/
-int gpt_clk_set_rate(struct clk *clk, unsigned long desired_rate)
-{
- struct gpt_rate_tbl *tbls = clk->rate_config.tbls;
- struct gpt_clk_config *config = clk->private_data;
- unsigned long val, rate;
- int i;
-
- i = round_rate_index(clk, desired_rate, &rate);
- if (i < 0)
- return i;
-
- val = readl(config->synth_reg) & ~(config->masks->mscale_sel_mask <<
- config->masks->mscale_sel_shift);
- val |= (tbls[i].mscale & config->masks->mscale_sel_mask) <<
- config->masks->mscale_sel_shift;
- val &= ~(config->masks->nscale_sel_mask <<
- config->masks->nscale_sel_shift);
- val |= (tbls[i].nscale & config->masks->nscale_sel_mask) <<
- config->masks->nscale_sel_shift;
- writel(val, config->synth_reg);
-
- clk->rate = rate;
-
- return 0;
-}
-
-/*
- * Calculates clcd clk rate for different values of div
- *
- * Fout from synthesizer can be given from below equation:
- * Fout= Fin/2*div (division factor)
- * div is 17 bits:-
- * 0-13 (fractional part)
- * 14-16 (integer part)
- * To calculate Fout we left shift val by 14 bits and divide Fin by
- * complete div (including fractional part) and then right shift the
- * result by 14 places.
- */
-unsigned long clcd_calc_rate(struct clk *clk, int index)
-{
- unsigned long rate = clk->pclk->rate;
- struct clcd_rate_tbl *tbls = clk->rate_config.tbls;
-
- rate /= 1000;
- rate <<= 12;
- rate /= (2 * tbls[index].div);
- rate >>= 12;
- rate *= 1000;
-
- return rate;
-}
-
-/*
- * calculates current programmed rate of clcd synthesizer
- * Fout from synthesizer can be given from below equation:
- * Fout= Fin/2*div (division factor)
- * div is 17 bits:-
- * 0-13 (fractional part)
- * 14-16 (integer part)
- * To calculate Fout we left shift val by 14 bits and divide Fin by
- * complete div (including fractional part) and then right shift the
- * result by 14 places.
- */
-int clcd_clk_recalc(struct clk *clk)
-{
- struct clcd_clk_config *config = clk->private_data;
- unsigned int div = 1;
- unsigned long prate;
- unsigned int val;
-
- val = readl(config->synth_reg);
- div = (val >> config->masks->div_factor_shift) &
- config->masks->div_factor_mask;
-
- if (!div)
- return -EINVAL;
-
- prate = clk->pclk->rate / 1000; /* first level division, make it KHz */
-
- clk->rate = (((unsigned long)prate << 12) / (2 * div)) >> 12;
- clk->rate *= 1000;
- return 0;
-}
-
-/* Configures new clock rate of auxiliary synthesizers used by: UART, FIRDA*/
-int clcd_clk_set_rate(struct clk *clk, unsigned long desired_rate)
-{
- struct clcd_rate_tbl *tbls = clk->rate_config.tbls;
- struct clcd_clk_config *config = clk->private_data;
- unsigned long val, rate;
- int i;
-
- i = round_rate_index(clk, desired_rate, &rate);
- if (i < 0)
- return i;
-
- val = readl(config->synth_reg) & ~(config->masks->div_factor_mask <<
- config->masks->div_factor_shift);
- val |= (tbls[i].div & config->masks->div_factor_mask) <<
- config->masks->div_factor_shift;
- writel(val, config->synth_reg);
-
- clk->rate = rate;
-
- return 0;
-}
-
-/*
- * Used for clocks that always have value as the parent clock divided by a
- * fixed divisor
- */
-int follow_parent(struct clk *clk)
-{
- unsigned int div_factor = (clk->div_factor < 1) ? 1 : clk->div_factor;
-
- clk->rate = clk->pclk->rate/div_factor;
- return 0;
-}
-
-/**
- * recalc_root_clocks - recalculate and propagate all root clocks
- *
- * Recalculates all root clocks (clocks with no parent), which if the
- * clock's .recalc is set correctly, should also propagate their rates.
- */
-void recalc_root_clocks(void)
-{
- struct clk *pclk;
- unsigned long flags;
- int ret = 0;
-
- spin_lock_irqsave(&clocks_lock, flags);
- list_for_each_entry(pclk, &root_clks, sibling) {
- if (pclk->recalc) {
- ret = pclk->recalc(pclk);
- /*
- * recalc will return error if clk out is not programmed
- * In this case configure default clock.
- */
- if (ret && pclk->set_rate)
- pclk->set_rate(pclk, 0);
- }
- propagate_rate(pclk, 1);
- /* Enable clks enabled on init, in software view */
- if (pclk->flags & ENABLED_ON_INIT)
- do_clk_enable(pclk);
- }
- spin_unlock_irqrestore(&clocks_lock, flags);
-}
-
-void __init clk_init(void)
-{
- recalc_root_clocks();
-}
-
-#ifdef CONFIG_DEBUG_FS
-/*
- * debugfs support to trace clock tree hierarchy and attributes
- */
-static struct dentry *clk_debugfs_root;
-static int clk_debugfs_register_one(struct clk *c)
-{
- int err;
- struct dentry *d;
- struct clk *pa = c->pclk;
- char s[255];
- char *p = s;
-
- if (c) {
- if (c->cl->con_id)
- p += sprintf(p, "%s", c->cl->con_id);
- if (c->cl->dev_id)
- p += sprintf(p, "%s", c->cl->dev_id);
- }
- d = debugfs_create_dir(s, pa ? pa->dent : clk_debugfs_root);
- if (!d)
- return -ENOMEM;
- c->dent = d;
-
- d = debugfs_create_u32("usage_count", S_IRUGO, c->dent,
- (u32 *)&c->usage_count);
- if (!d) {
- err = -ENOMEM;
- goto err_out;
- }
- d = debugfs_create_u32("rate", S_IRUGO, c->dent, (u32 *)&c->rate);
- if (!d) {
- err = -ENOMEM;
- goto err_out;
- }
- d = debugfs_create_x32("flags", S_IRUGO, c->dent, (u32 *)&c->flags);
- if (!d) {
- err = -ENOMEM;
- goto err_out;
- }
- return 0;
-
-err_out:
- debugfs_remove_recursive(c->dent);
- return err;
-}
-
-static int clk_debugfs_register(struct clk *c)
-{
- int err;
- struct clk *pa = c->pclk;
-
- if (pa && !pa->dent) {
- err = clk_debugfs_register(pa);
- if (err)
- return err;
- }
-
- if (!c->dent) {
- err = clk_debugfs_register_one(c);
- if (err)
- return err;
- }
- return 0;
-}
-
-static int __init clk_debugfs_init(void)
-{
- struct clk *c;
- struct dentry *d;
- int err;
-
- d = debugfs_create_dir("clock", NULL);
- if (!d)
- return -ENOMEM;
- clk_debugfs_root = d;
-
- list_for_each_entry(c, &clocks, node) {
- err = clk_debugfs_register(c);
- if (err)
- goto err_out;
- }
- return 0;
-err_out:
- debugfs_remove_recursive(clk_debugfs_root);
- return err;
-}
-late_initcall(clk_debugfs_init);
-
-static int clk_debugfs_reparent(struct clk *c)
-{
- debugfs_remove(c->dent);
- return clk_debugfs_register_one(c);
-}
-#endif /* CONFIG_DEBUG_FS */
diff --git a/arch/arm/plat-spear/include/plat/clock.h b/arch/arm/plat-spear/include/plat/clock.h
deleted file mode 100644
index 0062bafef12..00000000000
--- a/arch/arm/plat-spear/include/plat/clock.h
+++ /dev/null
@@ -1,249 +0,0 @@
-/*
- * arch/arm/plat-spear/include/plat/clock.h
- *
- * Clock framework definitions for SPEAr platform
- *
- * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#ifndef __PLAT_CLOCK_H
-#define __PLAT_CLOCK_H
-
-#include <linux/list.h>
-#include <linux/clkdev.h>
-#include <linux/types.h>
-
-/* clk structure flags */
-#define ALWAYS_ENABLED (1 << 0) /* clock always enabled */
-#define RESET_TO_ENABLE (1 << 1) /* reset register bit to enable clk */
-#define ENABLED_ON_INIT (1 << 2) /* clocks enabled at init */
-
-/**
- * struct clkops - clock operations
- * @enable: pointer to clock enable function
- * @disable: pointer to clock disable function
- */
-struct clkops {
- int (*enable) (struct clk *);
- void (*disable) (struct clk *);
-};
-
-/**
- * struct pclk_info - parents info
- * @pclk: pointer to parent clk
- * @pclk_val: value to be written for selecting this parent
- */
-struct pclk_info {
- struct clk *pclk;
- u8 pclk_val;
-};
-
-/**
- * struct pclk_sel - parents selection configuration
- * @pclk_info: pointer to array of parent clock info
- * @pclk_count: number of parents
- * @pclk_sel_reg: register for selecting a parent
- * @pclk_sel_mask: mask for selecting parent (can be used to clear bits also)
- */
-struct pclk_sel {
- struct pclk_info *pclk_info;
- u8 pclk_count;
- void __iomem *pclk_sel_reg;
- unsigned int pclk_sel_mask;
-};
-
-/**
- * struct rate_config - clk rate configurations
- * @tbls: array of device specific clk rate tables, in ascending order of rates
- * @count: size of tbls array
- * @default_index: default setting when originally disabled
- */
-struct rate_config {
- void *tbls;
- u8 count;
- u8 default_index;
-};
-
-/**
- * struct clk - clock structure
- * @usage_count: num of users who enabled this clock
- * @flags: flags for clock properties
- * @rate: programmed clock rate in Hz
- * @en_reg: clk enable/disable reg
- * @en_reg_bit: clk enable/disable bit
- * @ops: clk enable/disable ops - generic_clkops selected if NULL
- * @recalc: pointer to clock rate recalculate function
- * @set_rate: pointer to clock set rate function
- * @calc_rate: pointer to clock get rate function for index
- * @rate_config: rate configuration information, used by set_rate
- * @div_factor: division factor to parent clock.
- * @pclk: current parent clk
- * @pclk_sel: pointer to parent selection structure
- * @pclk_sel_shift: register shift for selecting parent of this clock
- * @children: list for childrens or this clock
- * @sibling: node for list of clocks having same parents
- * @private_data: clock specific private data
- * @node: list to maintain clocks linearly
- * @cl: clocklook up associated with this clock
- * @dent: object for debugfs
- */
-struct clk {
- unsigned int usage_count;
- unsigned int flags;
- unsigned long rate;
- void __iomem *en_reg;
- u8 en_reg_bit;
- const struct clkops *ops;
- int (*recalc) (struct clk *);
- int (*set_rate) (struct clk *, unsigned long rate);
- unsigned long (*calc_rate)(struct clk *, int index);
- struct rate_config rate_config;
- unsigned int div_factor;
-
- struct clk *pclk;
- struct pclk_sel *pclk_sel;
- unsigned int pclk_sel_shift;
-
- struct list_head children;
- struct list_head sibling;
- void *private_data;
-#ifdef CONFIG_DEBUG_FS
- struct list_head node;
- struct clk_lookup *cl;
- struct dentry *dent;
-#endif
-};
-
-/* pll configuration structure */
-struct pll_clk_masks {
- u32 mode_mask;
- u32 mode_shift;
-
- u32 norm_fdbk_m_mask;
- u32 norm_fdbk_m_shift;
- u32 dith_fdbk_m_mask;
- u32 dith_fdbk_m_shift;
- u32 div_p_mask;
- u32 div_p_shift;
- u32 div_n_mask;
- u32 div_n_shift;
-};
-
-struct pll_clk_config {
- void __iomem *mode_reg;
- void __iomem *cfg_reg;
- struct pll_clk_masks *masks;
-};
-
-/* pll clk rate config structure */
-struct pll_rate_tbl {
- u8 mode;
- u16 m;
- u8 n;
- u8 p;
-};
-
-/* ahb and apb bus configuration structure */
-struct bus_clk_masks {
- u32 mask;
- u32 shift;
-};
-
-struct bus_clk_config {
- void __iomem *reg;
- struct bus_clk_masks *masks;
-};
-
-/* ahb and apb clk bus rate config structure */
-struct bus_rate_tbl {
- u8 div;
-};
-
-/* Aux clk configuration structure: applicable to UART and FIRDA */
-struct aux_clk_masks {
- u32 eq_sel_mask;
- u32 eq_sel_shift;
- u32 eq1_mask;
- u32 eq2_mask;
- u32 xscale_sel_mask;
- u32 xscale_sel_shift;
- u32 yscale_sel_mask;
- u32 yscale_sel_shift;
-};
-
-struct aux_clk_config {
- void __iomem *synth_reg;
- struct aux_clk_masks *masks;
-};
-
-/* aux clk rate config structure */
-struct aux_rate_tbl {
- u16 xscale;
- u16 yscale;
- u8 eq;
-};
-
-/* GPT clk configuration structure */
-struct gpt_clk_masks {
- u32 mscale_sel_mask;
- u32 mscale_sel_shift;
- u32 nscale_sel_mask;
- u32 nscale_sel_shift;
-};
-
-struct gpt_clk_config {
- void __iomem *synth_reg;
- struct gpt_clk_masks *masks;
-};
-
-/* gpt clk rate config structure */
-struct gpt_rate_tbl {
- u16 mscale;
- u16 nscale;
-};
-
-/* clcd clk configuration structure */
-struct clcd_synth_masks {
- u32 div_factor_mask;
- u32 div_factor_shift;
-};
-
-struct clcd_clk_config {
- void __iomem *synth_reg;
- struct clcd_synth_masks *masks;
-};
-
-/* clcd clk rate config structure */
-struct clcd_rate_tbl {
- u16 div;
-};
-
-/* platform specific clock functions */
-void __init clk_init(void);
-void clk_register(struct clk_lookup *cl);
-void recalc_root_clocks(void);
-
-/* clock recalc & set rate functions */
-int follow_parent(struct clk *clk);
-unsigned long pll_calc_rate(struct clk *clk, int index);
-int pll_clk_recalc(struct clk *clk);
-int pll_clk_set_rate(struct clk *clk, unsigned long desired_rate);
-unsigned long bus_calc_rate(struct clk *clk, int index);
-int bus_clk_recalc(struct clk *clk);
-int bus_clk_set_rate(struct clk *clk, unsigned long desired_rate);
-unsigned long gpt_calc_rate(struct clk *clk, int index);
-int gpt_clk_recalc(struct clk *clk);
-int gpt_clk_set_rate(struct clk *clk, unsigned long desired_rate);
-unsigned long aux_calc_rate(struct clk *clk, int index);
-int aux_clk_recalc(struct clk *clk);
-int aux_clk_set_rate(struct clk *clk, unsigned long desired_rate);
-unsigned long clcd_calc_rate(struct clk *clk, int index);
-int clcd_clk_recalc(struct clk *clk);
-int clcd_clk_set_rate(struct clk *clk, unsigned long desired_rate);
-
-#endif /* __PLAT_CLOCK_H */
diff --git a/arch/arm/plat-spear/include/plat/debug-macro.S b/arch/arm/plat-spear/include/plat/debug-macro.S
index 02b160a1ec9..75b05ad0fba 100644
--- a/arch/arm/plat-spear/include/plat/debug-macro.S
+++ b/arch/arm/plat-spear/include/plat/debug-macro.S
@@ -4,7 +4,7 @@
* Debugging macro include header for spear platform
*
* Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
+ * Viresh Kumar <viresh.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
@@ -12,7 +12,7 @@
*/
#include <linux/amba/serial.h>
-#include <mach/hardware.h>
+#include <mach/spear.h>
.macro addruart, rp, rv, tmp
mov \rp, #SPEAR_DBG_UART_BASE @ Physical base
diff --git a/arch/arm/plat-spear/include/plat/hardware.h b/arch/arm/plat-spear/include/plat/hardware.h
deleted file mode 100644
index 70187d763e2..00000000000
--- a/arch/arm/plat-spear/include/plat/hardware.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * arch/arm/plat-spear/include/plat/hardware.h
- *
- * Hardware definitions for SPEAr
- *
- * Copyright (C) 2010 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#ifndef __PLAT_HARDWARE_H
-#define __PLAT_HARDWARE_H
-
-#endif /* __PLAT_HARDWARE_H */
diff --git a/arch/arm/plat-spear/include/plat/padmux.h b/arch/arm/plat-spear/include/plat/padmux.h
deleted file mode 100644
index 877f3adcf61..00000000000
--- a/arch/arm/plat-spear/include/plat/padmux.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * arch/arm/plat-spear/include/plat/padmux.h
- *
- * SPEAr platform specific gpio pads muxing file
- *
- * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#ifndef __PLAT_PADMUX_H
-#define __PLAT_PADMUX_H
-
-#include <linux/types.h>
-
-/*
- * struct pmx_reg: configuration structure for mode reg and mux reg
- *
- * offset: offset of mode reg
- * mask: mask of mode reg
- */
-struct pmx_reg {
- u32 offset;
- u32 mask;
-};
-
-/*
- * struct pmx_dev_mode: configuration structure every group of modes of a device
- *
- * ids: all modes for this configuration
- * mask: mask for supported mode
- */
-struct pmx_dev_mode {
- u32 ids;
- u32 mask;
-};
-
-/*
- * struct pmx_mode: mode definition structure
- *
- * name: mode name
- * mask: mode mask
- */
-struct pmx_mode {
- char *name;
- u32 id;
- u32 mask;
-};
-
-/*
- * struct pmx_dev: device definition structure
- *
- * name: device name
- * modes: device configuration array for different modes supported
- * mode_count: size of modes array
- * is_active: is peripheral active/enabled
- * enb_on_reset: if 1, mask bits to be cleared in reg otherwise to be set in reg
- */
-struct pmx_dev {
- char *name;
- struct pmx_dev_mode *modes;
- u8 mode_count;
- bool is_active;
- bool enb_on_reset;
-};
-
-/*
- * struct pmx_driver: driver definition structure
- *
- * mode: mode to be set
- * devs: array of pointer to pmx devices
- * devs_count: ARRAY_SIZE of devs
- * base: base address of soc config registers
- * mode_reg: structure of mode config register
- * mux_reg: structure of device mux config register
- */
-struct pmx_driver {
- struct pmx_mode *mode;
- struct pmx_dev **devs;
- u8 devs_count;
- u32 *base;
- struct pmx_reg mode_reg;
- struct pmx_reg mux_reg;
-};
-
-/* pmx functions */
-int pmx_register(struct pmx_driver *driver);
-
-#endif /* __PLAT_PADMUX_H */
diff --git a/arch/arm/plat-spear/include/plat/pl080.h b/arch/arm/plat-spear/include/plat/pl080.h
new file mode 100644
index 00000000000..2bc6b54460a
--- /dev/null
+++ b/arch/arm/plat-spear/include/plat/pl080.h
@@ -0,0 +1,21 @@
+/*
+ * arch/arm/plat-spear/include/plat/pl080.h
+ *
+ * DMAC pl080 definitions for SPEAr platform
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.linux@gmail.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __PLAT_PL080_H
+#define __PLAT_PL080_H
+
+struct pl08x_dma_chan;
+int pl080_get_signal(struct pl08x_dma_chan *ch);
+void pl080_put_signal(struct pl08x_dma_chan *ch);
+
+#endif /* __PLAT_PL080_H */
diff --git a/arch/arm/plat-spear/include/plat/shirq.h b/arch/arm/plat-spear/include/plat/shirq.h
index 03ed8b585dc..88a7fbd2479 100644
--- a/arch/arm/plat-spear/include/plat/shirq.h
+++ b/arch/arm/plat-spear/include/plat/shirq.h
@@ -4,7 +4,7 @@
* SPEAr platform shared irq layer header file
*
* Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
+ * Viresh Kumar <viresh.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
diff --git a/arch/arm/plat-spear/include/plat/timex.h b/arch/arm/plat-spear/include/plat/timex.h
index 914d09dd50f..ef95e5b780b 100644
--- a/arch/arm/plat-spear/include/plat/timex.h
+++ b/arch/arm/plat-spear/include/plat/timex.h
@@ -4,7 +4,7 @@
* SPEAr platform specific timex definitions
*
* Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
+ * Viresh Kumar <viresh.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
diff --git a/arch/arm/plat-spear/include/plat/uncompress.h b/arch/arm/plat-spear/include/plat/uncompress.h
index 1bf84527aee..2ce6cb17a98 100644
--- a/arch/arm/plat-spear/include/plat/uncompress.h
+++ b/arch/arm/plat-spear/include/plat/uncompress.h
@@ -4,7 +4,7 @@
* Serial port stubs for kernel decompress status messages
*
* Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
+ * Viresh Kumar <viresh.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
@@ -13,7 +13,7 @@
#include <linux/io.h>
#include <linux/amba/serial.h>
-#include <mach/hardware.h>
+#include <mach/spear.h>
#ifndef __PLAT_UNCOMPRESS_H
#define __PLAT_UNCOMPRESS_H
diff --git a/arch/arm/plat-spear/padmux.c b/arch/arm/plat-spear/padmux.c
deleted file mode 100644
index 555eec6dc1c..00000000000
--- a/arch/arm/plat-spear/padmux.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- * arch/arm/plat-spear/include/plat/padmux.c
- *
- * SPEAr platform specific gpio pads muxing source file
- *
- * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <plat/padmux.h>
-
-/*
- * struct pmx: pmx definition structure
- *
- * base: base address of configuration registers
- * mode_reg: mode configurations
- * mux_reg: muxing configurations
- * active_mode: pointer to current active mode
- */
-struct pmx {
- u32 base;
- struct pmx_reg mode_reg;
- struct pmx_reg mux_reg;
- struct pmx_mode *active_mode;
-};
-
-static struct pmx *pmx;
-
-/**
- * pmx_mode_set - Enables an multiplexing mode
- * @mode - pointer to pmx mode
- *
- * It will set mode of operation in hardware.
- * Returns -ve on Err otherwise 0
- */
-static int pmx_mode_set(struct pmx_mode *mode)
-{
- u32 val;
-
- if (!mode->name)
- return -EFAULT;
-
- pmx->active_mode = mode;
-
- val = readl(pmx->base + pmx->mode_reg.offset);
- val &= ~pmx->mode_reg.mask;
- val |= mode->mask & pmx->mode_reg.mask;
- writel(val, pmx->base + pmx->mode_reg.offset);
-
- return 0;
-}
-
-/**
- * pmx_devs_enable - Enables list of devices
- * @devs - pointer to pmx device array
- * @count - number of devices to enable
- *
- * It will enable pads for all required peripherals once and only once.
- * If peripheral is not supported by current mode then request is rejected.
- * Conflicts between peripherals are not handled and peripherals will be
- * enabled in the order they are present in pmx_dev array.
- * In case of conflicts last peripheral enabled will be present.
- * Returns -ve on Err otherwise 0
- */
-static int pmx_devs_enable(struct pmx_dev **devs, u8 count)
-{
- u32 val, i, mask;
-
- if (!count)
- return -EINVAL;
-
- val = readl(pmx->base + pmx->mux_reg.offset);
- for (i = 0; i < count; i++) {
- u8 j = 0;
-
- if (!devs[i]->name || !devs[i]->modes) {
- printk(KERN_ERR "padmux: dev name or modes is null\n");
- continue;
- }
- /* check if peripheral exists in active mode */
- if (pmx->active_mode) {
- bool found = false;
- for (j = 0; j < devs[i]->mode_count; j++) {
- if (devs[i]->modes[j].ids &
- pmx->active_mode->id) {
- found = true;
- break;
- }
- }
- if (found == false) {
- printk(KERN_ERR "%s device not available in %s"\
- "mode\n", devs[i]->name,
- pmx->active_mode->name);
- continue;
- }
- }
-
- /* enable peripheral */
- mask = devs[i]->modes[j].mask & pmx->mux_reg.mask;
- if (devs[i]->enb_on_reset)
- val &= ~mask;
- else
- val |= mask;
-
- devs[i]->is_active = true;
- }
- writel(val, pmx->base + pmx->mux_reg.offset);
- kfree(pmx);
-
- /* this will ensure that multiplexing can't be changed now */
- pmx = (struct pmx *)-1;
-
- return 0;
-}
-
-/**
- * pmx_register - registers a platform requesting pad mux feature
- * @driver - pointer to driver structure containing driver specific parameters
- *
- * Also this must be called only once. This will allocate memory for pmx
- * structure, will call pmx_mode_set, will call pmx_devs_enable.
- * Returns -ve on Err otherwise 0
- */
-int pmx_register(struct pmx_driver *driver)
-{
- int ret = 0;
-
- if (pmx)
- return -EPERM;
- if (!driver->base || !driver->devs)
- return -EFAULT;
-
- pmx = kzalloc(sizeof(*pmx), GFP_KERNEL);
- if (!pmx)
- return -ENOMEM;
-
- pmx->base = (u32)driver->base;
- pmx->mode_reg.offset = driver->mode_reg.offset;
- pmx->mode_reg.mask = driver->mode_reg.mask;
- pmx->mux_reg.offset = driver->mux_reg.offset;
- pmx->mux_reg.mask = driver->mux_reg.mask;
-
- /* choose mode to enable */
- if (driver->mode) {
- ret = pmx_mode_set(driver->mode);
- if (ret)
- goto pmx_fail;
- }
- ret = pmx_devs_enable(driver->devs, driver->devs_count);
- if (ret)
- goto pmx_fail;
-
- return 0;
-
-pmx_fail:
- return ret;
-}
diff --git a/arch/arm/plat-spear/pl080.c b/arch/arm/plat-spear/pl080.c
new file mode 100644
index 00000000000..12cf27f935f
--- /dev/null
+++ b/arch/arm/plat-spear/pl080.c
@@ -0,0 +1,80 @@
+/*
+ * arch/arm/plat-spear/pl080.c
+ *
+ * DMAC pl080 definitions for SPEAr platform
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.linux@gmail.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/amba/pl08x.h>
+#include <linux/amba/bus.h>
+#include <linux/bug.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/spinlock_types.h>
+#include <mach/spear.h>
+#include <mach/misc_regs.h>
+
+static spinlock_t lock = __SPIN_LOCK_UNLOCKED(x);
+
+struct {
+ unsigned char busy;
+ unsigned char val;
+} signals[16] = {{0, 0}, };
+
+int pl080_get_signal(struct pl08x_dma_chan *ch)
+{
+ const struct pl08x_channel_data *cd = ch->cd;
+ unsigned int signal = cd->min_signal, val;
+ unsigned long flags;
+
+ spin_lock_irqsave(&lock, flags);
+
+ /* Return if signal is already acquired by somebody else */
+ if (signals[signal].busy &&
+ (signals[signal].val != cd->muxval)) {
+ spin_unlock_irqrestore(&lock, flags);
+ return -EBUSY;
+ }
+
+ /* If acquiring for the first time, configure it */
+ if (!signals[signal].busy) {
+ val = readl(DMA_CHN_CFG);
+
+ /*
+ * Each request line has two bits in DMA_CHN_CFG register. To
+ * goto the bits of current request line, do left shift of
+ * value by 2 * signal number.
+ */
+ val &= ~(0x3 << (signal * 2));
+ val |= cd->muxval << (signal * 2);
+ writel(val, DMA_CHN_CFG);
+ }
+
+ signals[signal].busy++;
+ signals[signal].val = cd->muxval;
+ spin_unlock_irqrestore(&lock, flags);
+
+ return signal;
+}
+
+void pl080_put_signal(struct pl08x_dma_chan *ch)
+{
+ const struct pl08x_channel_data *cd = ch->cd;
+ unsigned long flags;
+
+ spin_lock_irqsave(&lock, flags);
+
+ /* if signal is not used */
+ if (!signals[cd->min_signal].busy)
+ BUG();
+
+ signals[cd->min_signal].busy--;
+
+ spin_unlock_irqrestore(&lock, flags);
+}
diff --git a/arch/arm/plat-spear/restart.c b/arch/arm/plat-spear/restart.c
index 16f203e78d8..4f990115b1b 100644
--- a/arch/arm/plat-spear/restart.c
+++ b/arch/arm/plat-spear/restart.c
@@ -4,7 +4,7 @@
* SPEAr platform specific restart functions
*
* Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
+ * Viresh Kumar <viresh.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
@@ -13,9 +13,10 @@
#include <linux/io.h>
#include <asm/system_misc.h>
#include <asm/hardware/sp810.h>
-#include <mach/hardware.h>
+#include <mach/spear.h>
#include <mach/generic.h>
+#define SPEAR13XX_SYS_SW_RES (VA_MISC_BASE + 0x204)
void spear_restart(char mode, const char *cmd)
{
if (mode == 's') {
@@ -23,6 +24,10 @@ void spear_restart(char mode, const char *cmd)
soft_restart(0);
} else {
/* hardware reset, Use on-chip reset capability */
+#ifdef CONFIG_ARCH_SPEAR13XX
+ writel_relaxed(0x01, SPEAR13XX_SYS_SW_RES);
+#else
sysctl_soft_reset((void __iomem *)VA_SPEAR_SYS_CTRL_BASE);
+#endif
}
}
diff --git a/arch/arm/plat-spear/shirq.c b/arch/arm/plat-spear/shirq.c
index 961fb726124..853e891e118 100644
--- a/arch/arm/plat-spear/shirq.c
+++ b/arch/arm/plat-spear/shirq.c
@@ -4,7 +4,7 @@
* SPEAr platform shared irq layer source file
*
* Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.com>
+ * Viresh Kumar <viresh.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
diff --git a/arch/arm/plat-spear/time.c b/arch/arm/plat-spear/time.c
index abb5bdecd50..03321af5de9 100644
--- a/arch/arm/plat-spear/time.c
+++ b/arch/arm/plat-spear/time.c
@@ -15,14 +15,15 @@
#include <linux/err.h>
#include <linux/init.h>
#include <linux/interrupt.h>
+#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
#include <linux/time.h>
#include <linux/irq.h>
#include <asm/mach/time.h>
#include <mach/generic.h>
-#include <mach/hardware.h>
-#include <mach/irqs.h>
/*
* We would use TIMER0 and TIMER1 as clockevent and clocksource.
@@ -175,7 +176,7 @@ static struct irqaction spear_timer_irq = {
.handler = spear_timer_interrupt
};
-static void __init spear_clockevent_init(void)
+static void __init spear_clockevent_init(int irq)
{
u32 tick_rate;
@@ -195,22 +196,35 @@ static void __init spear_clockevent_init(void)
clockevents_register_device(&clkevt);
- setup_irq(SPEAR_GPT0_CHAN0_IRQ, &spear_timer_irq);
+ setup_irq(irq, &spear_timer_irq);
}
-void __init spear_setup_timer(void)
+const static struct of_device_id timer_of_match[] __initconst = {
+ { .compatible = "st,spear-timer", },
+ { },
+};
+
+void __init spear_setup_of_timer(void)
{
- int ret;
+ struct device_node *np;
+ int irq, ret;
+
+ np = of_find_matching_node(NULL, timer_of_match);
+ if (!np) {
+ pr_err("%s: No timer passed via DT\n", __func__);
+ return;
+ }
- if (!request_mem_region(SPEAR_GPT0_BASE, SZ_1K, "gpt0")) {
- pr_err("%s:cannot get IO addr\n", __func__);
+ irq = irq_of_parse_and_map(np, 0);
+ if (!irq) {
+ pr_err("%s: No irq passed for timer via DT\n", __func__);
return;
}
- gpt_base = (void __iomem *)ioremap(SPEAR_GPT0_BASE, SZ_1K);
+ gpt_base = of_iomap(np, 0);
if (!gpt_base) {
- pr_err("%s:ioremap failed for gpt\n", __func__);
- goto err_mem;
+ pr_err("%s: of iomap failed\n", __func__);
+ return;
}
gpt_clk = clk_get_sys("gpt0", NULL);
@@ -219,21 +233,19 @@ void __init spear_setup_timer(void)
goto err_iomap;
}
- ret = clk_enable(gpt_clk);
+ ret = clk_prepare_enable(gpt_clk);
if (ret < 0) {
- pr_err("%s:couldn't enable gpt clock\n", __func__);
- goto err_clk;
+ pr_err("%s:couldn't prepare-enable gpt clock\n", __func__);
+ goto err_prepare_enable_clk;
}
- spear_clockevent_init();
+ spear_clockevent_init(irq);
spear_clocksource_init();
return;
-err_clk:
+err_prepare_enable_clk:
clk_put(gpt_clk);
err_iomap:
iounmap(gpt_base);
-err_mem:
- release_mem_region(SPEAR_GPT0_BASE, SZ_1K);
}