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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/mips/alchemy/common
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/mips/alchemy/common')
-rw-r--r--kernel/arch/mips/alchemy/common/Makefile7
-rw-r--r--kernel/arch/mips/alchemy/common/clock.c82
-rw-r--r--kernel/arch/mips/alchemy/common/irq.c8
-rw-r--r--kernel/arch/mips/alchemy/common/time.c6
4 files changed, 43 insertions, 60 deletions
diff --git a/kernel/arch/mips/alchemy/common/Makefile b/kernel/arch/mips/alchemy/common/Makefile
index f64744f3b..23800b8e6 100644
--- a/kernel/arch/mips/alchemy/common/Makefile
+++ b/kernel/arch/mips/alchemy/common/Makefile
@@ -5,10 +5,5 @@
# Makefile for the Alchemy Au1xx0 CPUs, generic files.
#
-obj-y += prom.o time.o clock.o platform.o power.o \
+obj-y += prom.o time.o clock.o platform.o power.o gpiolib.o \
setup.o sleeper.o dma.o dbdma.o vss.o irq.o usb.o
-
-# optional gpiolib support
-ifeq ($(CONFIG_ALCHEMY_GPIO_INDIRECT),)
- obj-$(CONFIG_GPIOLIB) += gpiolib.o
-endif
diff --git a/kernel/arch/mips/alchemy/common/clock.c b/kernel/arch/mips/alchemy/common/clock.c
index 6a98d2cb4..bd34f4093 100644
--- a/kernel/arch/mips/alchemy/common/clock.c
+++ b/kernel/arch/mips/alchemy/common/clock.c
@@ -35,6 +35,7 @@
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/slab.h>
@@ -389,12 +390,11 @@ static long alchemy_calc_div(unsigned long rate, unsigned long prate,
return div1;
}
-static long alchemy_clk_fgcs_detr(struct clk_hw *hw, unsigned long rate,
- unsigned long *best_parent_rate,
- struct clk_hw **best_parent_clk,
- int scale, int maxdiv)
+static int alchemy_clk_fgcs_detr(struct clk_hw *hw,
+ struct clk_rate_request *req,
+ int scale, int maxdiv)
{
- struct clk *pc, *bpc, *free;
+ struct clk_hw *pc, *bpc, *free;
long tdv, tpr, pr, nr, br, bpr, diff, lastdiff;
int j;
@@ -408,7 +408,7 @@ static long alchemy_clk_fgcs_detr(struct clk_hw *hw, unsigned long rate,
* the one that gets closest to but not over the requested rate.
*/
for (j = 0; j < 7; j++) {
- pc = clk_get_parent_by_index(hw->clk, j);
+ pc = clk_hw_get_parent_by_index(hw, j);
if (!pc)
break;
@@ -416,20 +416,20 @@ static long alchemy_clk_fgcs_detr(struct clk_hw *hw, unsigned long rate,
* XXX: we would actually want clk_has_active_children()
* but this is a good-enough approximation for now.
*/
- if (!__clk_is_prepared(pc)) {
+ if (!clk_hw_is_prepared(pc)) {
if (!free)
free = pc;
}
- pr = clk_get_rate(pc);
- if (pr < rate)
+ pr = clk_hw_get_rate(pc);
+ if (pr < req->rate)
continue;
/* what can hardware actually provide */
- tdv = alchemy_calc_div(rate, pr, scale, maxdiv, NULL);
+ tdv = alchemy_calc_div(req->rate, pr, scale, maxdiv, NULL);
nr = pr / tdv;
- diff = rate - nr;
- if (nr > rate)
+ diff = req->rate - nr;
+ if (nr > req->rate)
continue;
if (diff < lastdiff) {
@@ -448,15 +448,16 @@ static long alchemy_clk_fgcs_detr(struct clk_hw *hw, unsigned long rate,
*/
if (lastdiff && free) {
for (j = (maxdiv == 4) ? 1 : scale; j <= maxdiv; j += scale) {
- tpr = rate * j;
+ tpr = req->rate * j;
if (tpr < 0)
break;
- pr = clk_round_rate(free, tpr);
+ pr = clk_hw_round_rate(free, tpr);
- tdv = alchemy_calc_div(rate, pr, scale, maxdiv, NULL);
+ tdv = alchemy_calc_div(req->rate, pr, scale, maxdiv,
+ NULL);
nr = pr / tdv;
- diff = rate - nr;
- if (nr > rate)
+ diff = req->rate - nr;
+ if (nr > req->rate)
continue;
if (diff < lastdiff) {
lastdiff = diff;
@@ -469,9 +470,14 @@ static long alchemy_clk_fgcs_detr(struct clk_hw *hw, unsigned long rate,
}
}
- *best_parent_rate = bpr;
- *best_parent_clk = __clk_get_hw(bpc);
- return br;
+ if (br < 0)
+ return br;
+
+ req->best_parent_rate = bpr;
+ req->best_parent_hw = bpc;
+ req->rate = br;
+
+ return 0;
}
static int alchemy_clk_fgv1_en(struct clk_hw *hw)
@@ -562,14 +568,10 @@ static unsigned long alchemy_clk_fgv1_recalc(struct clk_hw *hw,
return parent_rate / v;
}
-static long alchemy_clk_fgv1_detr(struct clk_hw *hw, unsigned long rate,
- unsigned long min_rate,
- unsigned long max_rate,
- unsigned long *best_parent_rate,
- struct clk_hw **best_parent_clk)
+static int alchemy_clk_fgv1_detr(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
- return alchemy_clk_fgcs_detr(hw, rate, best_parent_rate,
- best_parent_clk, 2, 512);
+ return alchemy_clk_fgcs_detr(hw, req, 2, 512);
}
/* Au1000, Au1100, Au15x0, Au12x0 */
@@ -696,11 +698,8 @@ static unsigned long alchemy_clk_fgv2_recalc(struct clk_hw *hw,
return t;
}
-static long alchemy_clk_fgv2_detr(struct clk_hw *hw, unsigned long rate,
- unsigned long min_rate,
- unsigned long max_rate,
- unsigned long *best_parent_rate,
- struct clk_hw **best_parent_clk)
+static int alchemy_clk_fgv2_detr(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct alchemy_fgcs_clk *c = to_fgcs_clk(hw);
int scale, maxdiv;
@@ -713,8 +712,7 @@ static long alchemy_clk_fgv2_detr(struct clk_hw *hw, unsigned long rate,
maxdiv = 512;
}
- return alchemy_clk_fgcs_detr(hw, rate, best_parent_rate,
- best_parent_clk, scale, maxdiv);
+ return alchemy_clk_fgcs_detr(hw, req, scale, maxdiv);
}
/* Au1300 larger input mux, no separate disable bit, flexible divider */
@@ -752,12 +750,12 @@ static int __init alchemy_clk_init_fgens(int ctype)
switch (ctype) {
case ALCHEMY_CPU_AU1000...ALCHEMY_CPU_AU1200:
id.ops = &alchemy_clkops_fgenv1;
- id.parent_names = (const char **)alchemy_clk_fgv1_parents;
+ id.parent_names = alchemy_clk_fgv1_parents;
id.num_parents = 2;
break;
case ALCHEMY_CPU_AU1300:
id.ops = &alchemy_clkops_fgenv2;
- id.parent_names = (const char **)alchemy_clk_fgv2_parents;
+ id.parent_names = alchemy_clk_fgv2_parents;
id.num_parents = 3;
break;
default:
@@ -917,17 +915,13 @@ static int alchemy_clk_csrc_setr(struct clk_hw *hw, unsigned long rate,
return 0;
}
-static long alchemy_clk_csrc_detr(struct clk_hw *hw, unsigned long rate,
- unsigned long min_rate,
- unsigned long max_rate,
- unsigned long *best_parent_rate,
- struct clk_hw **best_parent_clk)
+static int alchemy_clk_csrc_detr(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct alchemy_fgcs_clk *c = to_fgcs_clk(hw);
int scale = c->dt[2] == 3 ? 1 : 2; /* au1300 check */
- return alchemy_clk_fgcs_detr(hw, rate, best_parent_rate,
- best_parent_clk, scale, 4);
+ return alchemy_clk_fgcs_detr(hw, req, scale, 4);
}
static struct clk_ops alchemy_clkops_csrc = {
@@ -961,7 +955,7 @@ static int __init alchemy_clk_setup_imux(int ctype)
struct clk *c;
id.ops = &alchemy_clkops_csrc;
- id.parent_names = (const char **)alchemy_clk_csrc_parents;
+ id.parent_names = alchemy_clk_csrc_parents;
id.num_parents = 7;
id.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE;
diff --git a/kernel/arch/mips/alchemy/common/irq.c b/kernel/arch/mips/alchemy/common/irq.c
index 6cb60abfd..da9f92200 100644
--- a/kernel/arch/mips/alchemy/common/irq.c
+++ b/kernel/arch/mips/alchemy/common/irq.c
@@ -491,7 +491,7 @@ static int au1x_ic_settype(struct irq_data *d, unsigned int flow_type)
default:
ret = -EINVAL;
}
- __irq_set_chip_handler_name_locked(d->irq, chip, handler, name);
+ irq_set_chip_handler_name_locked(d, chip, handler, name);
wmb();
@@ -703,7 +703,7 @@ static int au1300_gpic_settype(struct irq_data *d, unsigned int type)
return -EINVAL;
}
- __irq_set_chip_handler_name_locked(d->irq, &au1300_gpic, hdl, name);
+ irq_set_chip_handler_name_locked(d, &au1300_gpic, hdl, name);
au1300_gpic_chgcfg(d->irq - ALCHEMY_GPIC_INT_BASE, GPIC_CFG_IC_MASK, s);
@@ -851,7 +851,7 @@ static struct syscore_ops alchemy_gpic_pmops = {
/* create chained handlers for the 4 IC requests to the MIPS IRQ ctrl */
#define DISP(name, base, addr) \
-static void au1000_##name##_dispatch(unsigned int irq, struct irq_desc *d) \
+static void au1000_##name##_dispatch(struct irq_desc *d) \
{ \
unsigned long r = __raw_readl((void __iomem *)KSEG1ADDR(addr)); \
if (likely(r)) \
@@ -865,7 +865,7 @@ DISP(ic0r1, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ1INT)
DISP(ic1r0, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ0INT)
DISP(ic1r1, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ1INT)
-static void alchemy_gpic_dispatch(unsigned int irq, struct irq_desc *d)
+static void alchemy_gpic_dispatch(struct irq_desc *d)
{
int i = __raw_readl(AU1300_GPIC_ADDR + AU1300_GPIC_PRIENC);
generic_handle_irq(ALCHEMY_GPIC_INT_BASE + i);
diff --git a/kernel/arch/mips/alchemy/common/time.c b/kernel/arch/mips/alchemy/common/time.c
index 50e17e13c..f99d3ec17 100644
--- a/kernel/arch/mips/alchemy/common/time.c
+++ b/kernel/arch/mips/alchemy/common/time.c
@@ -69,11 +69,6 @@ static int au1x_rtcmatch2_set_next_event(unsigned long delta,
return 0;
}
-static void au1x_rtcmatch2_set_mode(enum clock_event_mode mode,
- struct clock_event_device *cd)
-{
-}
-
static irqreturn_t au1x_rtcmatch2_irq(int irq, void *dev_id)
{
struct clock_event_device *cd = dev_id;
@@ -86,7 +81,6 @@ static struct clock_event_device au1x_rtcmatch2_clockdev = {
.features = CLOCK_EVT_FEAT_ONESHOT,
.rating = 1500,
.set_next_event = au1x_rtcmatch2_set_next_event,
- .set_mode = au1x_rtcmatch2_set_mode,
.cpumask = cpu_all_mask,
};