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Merge branch 'soc4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc2

Browse Source 
Its a little embarrassing, but they all fix problems introduced
in previous pull-requests for 3.8 that have been merged.

* The three Revert patches back-out secondary CPU initialisation
  changes from Bastian Hecht which he as advised me are incorrect
  and break secondary CPU initialisation.

* The clkfwk patch from Morimoto-san resolves a build warning.

* 'soc4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  sh: clkfwk: fixup unsed variable warning
  Revert "ARM: shmobile: r8a7779: Replace modify_scu_cpu_psr with scu_power_mode"
  Revert "ARM: shmobile: sh73a0: Replace modify_scu_cpu_psr with scu_power_mode"
  Revert "ARM: shmobile: emev2: Replace modify_scu_cpu_psr with scu_power_mode"

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2012-11-13 13:48:02 +01:00
commit 97b129be91
4 changed files with 63 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
arch/arm/mach-shmobile/smp-emev2.c
View File

@ -32,8 +32,24 @@
#define EMEV2_SCU_BASE 0x1e000000
static DEFINE_SPINLOCK(scu_lock);
static void __iomem *scu_base;
static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
{
unsigned long tmp;
/* we assume this code is running on a different cpu
* than the one that is changing coherency setting */
spin_lock(&scu_lock);
tmp = readl(scu_base + 8);
tmp &= ~clr;
tmp |= set;
writel(tmp, scu_base + 8);
spin_unlock(&scu_lock);
}
static unsigned int __init emev2_get_core_count(void)
{
if (!scu_base) {
@ -79,7 +95,7 @@ static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct *
cpu = cpu_logical_map(cpu);
/* enable cache coherency */
scu_power_mode(scu_base, 0);
modify_scu_cpu_psr(0, 3 << (cpu * 8));
/* Tell ROM loader about our vector (in headsmp.S) */
emev2_set_boot_vector(__pa(shmobile_secondary_vector));
@ -90,10 +106,12 @@ static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct *
static void __init emev2_smp_prepare_cpus(unsigned int max_cpus)
{
int cpu = cpu_logical_map(0);
scu_enable(scu_base);
/* enable cache coherency on CPU0 */
scu_power_mode(scu_base, 0);
modify_scu_cpu_psr(0, 3 << (cpu * 8));
}
static void __init emev2_smp_init_cpus(void)

25
arch/arm/mach-shmobile/smp-r8a7779.c
View File

@ -61,6 +61,9 @@ static void __iomem *scu_base_addr(void)
return (void __iomem *)0xf0000000;
}
static DEFINE_SPINLOCK(scu_lock);
static unsigned long tmp;
#ifdef CONFIG_HAVE_ARM_TWD
static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
@ -70,6 +73,20 @@ void __init r8a7779_register_twd(void)
}
#endif
static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
{
void __iomem *scu_base = scu_base_addr();
spin_lock(&scu_lock);
tmp = __raw_readl(scu_base + 8);
tmp &= ~clr;
tmp |= set;
spin_unlock(&scu_lock);
/* disable cache coherency after releasing the lock */
__raw_writel(tmp, scu_base + 8);
}
static unsigned int __init r8a7779_get_core_count(void)
{
void __iomem *scu_base = scu_base_addr();
@ -85,7 +102,7 @@ static int r8a7779_platform_cpu_kill(unsigned int cpu)
cpu = cpu_logical_map(cpu);
/* disable cache coherency */
scu_power_mode(scu_base_addr(), 3);
modify_scu_cpu_psr(3 << (cpu * 8), 0);
if (cpu < ARRAY_SIZE(r8a7779_ch_cpu))
ch = r8a7779_ch_cpu[cpu];
@ -128,7 +145,7 @@ static int __cpuinit r8a7779_boot_secondary(unsigned int cpu, struct task_struct
cpu = cpu_logical_map(cpu);
/* enable cache coherency */
scu_power_mode(scu_base_addr(), 0);
modify_scu_cpu_psr(0, 3 << (cpu * 8));
if (cpu < ARRAY_SIZE(r8a7779_ch_cpu))
ch = r8a7779_ch_cpu[cpu];
@ -141,13 +158,15 @@ static int __cpuinit r8a7779_boot_secondary(unsigned int cpu, struct task_struct
static void __init r8a7779_smp_prepare_cpus(unsigned int max_cpus)
{
int cpu = cpu_logical_map(0);
scu_enable(scu_base_addr());
/* Map the reset vector (in headsmp.S) */
__raw_writel(__pa(shmobile_secondary_vector), AVECR);
/* enable cache coherency on CPU0 */
scu_power_mode(scu_base_addr(), 0);
modify_scu_cpu_psr(0, 3 << (cpu * 8));
r8a7779_pm_init();

23
arch/arm/mach-shmobile/smp-sh73a0.c
View File

@ -41,6 +41,9 @@ static void __iomem *scu_base_addr(void)
return (void __iomem *)0xf0000000;
}
static DEFINE_SPINLOCK(scu_lock);
static unsigned long tmp;
#ifdef CONFIG_HAVE_ARM_TWD
static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
void __init sh73a0_register_twd(void)
@ -49,6 +52,20 @@ void __init sh73a0_register_twd(void)
}
#endif
static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
{
void __iomem *scu_base = scu_base_addr();
spin_lock(&scu_lock);
tmp = __raw_readl(scu_base + 8);
tmp &= ~clr;
tmp |= set;
spin_unlock(&scu_lock);
/* disable cache coherency after releasing the lock */
__raw_writel(tmp, scu_base + 8);
}
static unsigned int __init sh73a0_get_core_count(void)
{
void __iomem *scu_base = scu_base_addr();
@ -66,7 +83,7 @@ static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct
cpu = cpu_logical_map(cpu);
/* enable cache coherency */
scu_power_mode(scu_base_addr(), 0);
modify_scu_cpu_psr(0, 3 << (cpu * 8));
if (((__raw_readl(PSTR) >> (4 * cpu)) & 3) == 3)
__raw_writel(1 << cpu, WUPCR); /* wake up */
@ -78,6 +95,8 @@ static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct
static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus)
{
int cpu = cpu_logical_map(0);
scu_enable(scu_base_addr());
/* Map the reset vector (in headsmp.S) */
@ -85,7 +104,7 @@ static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus)
__raw_writel(__pa(shmobile_secondary_vector), SBAR);
/* enable cache coherency on CPU0 */
scu_power_mode(scu_base_addr(), 0);
modify_scu_cpu_psr(0, 3 << (cpu * 8));
}
static void __init sh73a0_smp_init_cpus(void)

1
drivers/sh/clk/cpg.c
View File

@ -401,7 +401,6 @@ static int fsidiv_enable(struct clk *clk)
static int fsidiv_set_rate(struct clk *clk, unsigned long rate)
{
u32 val;
int idx;
idx = (clk->parent->rate / rate) & 0xffff;