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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 16:50:35 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 16:50:35 -0800
commit3c0cb7c31c206aaedb967e44b98442bbeb17a6c4 (patch)
tree3ecba45d7ffae4fba4a5aafaef4af5b0b1105bde /arch/arm/mach-sa1100/cpu-sa1110.c
parentf70f5b9dc74ca7d0a64c4ead3fb28da09dc1b234 (diff)
parent404a02cbd2ae8bf256a2fa1169bdfe86bb5ebb34 (diff)
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (416 commits) ARM: DMA: add support for DMA debugging ARM: PL011: add DMA burst threshold support for ST variants ARM: PL011: Add support for transmit DMA ARM: PL011: Ensure IRQs are disabled in UART interrupt handler ARM: PL011: Separate hardware FIFO size from TTY FIFO size ARM: PL011: Allow better handling of vendor data ARM: PL011: Ensure error flags are clear at startup ARM: PL011: include revision number in boot-time port printk ARM: vexpress: add sched_clock() for Versatile Express ARM i.MX53: Make MX53 EVK bootable ARM i.MX53: Some bug fix about MX53 MSL code ARM: 6607/1: sa1100: Update platform device registration ARM: 6606/1: sa1100: Fix platform device registration ARM i.MX51: rename IPU irqs ARM i.MX51: Add ipu clock support ARM: imx/mx27_3ds: Add PMIC support ARM: DMA: Replace page_to_dma()/dma_to_page() with pfn_to_dma()/dma_to_pfn() mx51: fix usb clock support MX51: Add support for usb host 2 arch/arm/plat-mxc/ehci.c: fix errors/typos ...
Diffstat (limited to 'arch/arm/mach-sa1100/cpu-sa1110.c')
-rw-r--r--arch/arm/mach-sa1100/cpu-sa1110.c57
1 files changed, 33 insertions, 24 deletions
diff --git a/arch/arm/mach-sa1100/cpu-sa1110.c b/arch/arm/mach-sa1100/cpu-sa1110.c
index 7252874d328..675bf8ef97e 100644
--- a/arch/arm/mach-sa1100/cpu-sa1110.c
+++ b/arch/arm/mach-sa1100/cpu-sa1110.c
@@ -16,28 +16,24 @@
*
* The SDRAM type can be passed on the command line as cpu_sa1110.sdram=type
*/
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/cpufreq.h>
#include <linux/delay.h>
#include <linux/init.h>
-#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
-#include <mach/hardware.h>
#include <asm/cputype.h>
#include <asm/mach-types.h>
-#include <asm/system.h>
+
+#include <mach/hardware.h>
#include "generic.h"
#undef DEBUG
-static struct cpufreq_driver sa1110_driver;
-
struct sdram_params {
- const char name[16];
+ const char name[20];
u_char rows; /* bits */
u_char cas_latency; /* cycles */
u_char tck; /* clock cycle time (ns) */
@@ -107,6 +103,15 @@ static struct sdram_params sdram_tbl[] __initdata = {
.twr = 8,
.refresh = 64000,
.cas_latency = 3,
+ }, { /* Micron MT48LC8M16A2TG-75 */
+ .name = "MT48LC8M16A2TG-75",
+ .rows = 12,
+ .tck = 8,
+ .trcd = 20,
+ .trp = 20,
+ .twr = 8,
+ .refresh = 64000,
+ .cas_latency = 3,
},
};
@@ -180,11 +185,13 @@ sdram_calculate_timing(struct sdram_info *sd, u_int cpu_khz,
sd->mdrefr |= MDREFR_K1DB2;
/* initial number of '1's in MDCAS + 1 */
- set_mdcas(sd->mdcas, sd_khz >= 62000, ns_to_cycles(sdram->trcd, mem_khz));
+ set_mdcas(sd->mdcas, sd_khz >= 62000,
+ ns_to_cycles(sdram->trcd, mem_khz));
#ifdef DEBUG
- printk("MDCNFG: %08x MDREFR: %08x MDCAS0: %08x MDCAS1: %08x MDCAS2: %08x\n",
- sd->mdcnfg, sd->mdrefr, sd->mdcas[0], sd->mdcas[1], sd->mdcas[2]);
+ printk(KERN_DEBUG "MDCNFG: %08x MDREFR: %08x MDCAS0: %08x MDCAS1: %08x MDCAS2: %08x\n",
+ sd->mdcnfg, sd->mdrefr, sd->mdcas[0], sd->mdcas[1],
+ sd->mdcas[2]);
#endif
}
@@ -213,7 +220,7 @@ sdram_update_refresh(u_int cpu_khz, struct sdram_params *sdram)
#ifdef DEBUG
mdelay(250);
- printk("new dri value = %d\n", dri);
+ printk(KERN_DEBUG "new dri value = %d\n", dri);
#endif
sdram_set_refresh(dri);
@@ -232,7 +239,7 @@ static int sa1110_target(struct cpufreq_policy *policy,
unsigned long flags;
unsigned int ppcr, unused;
- switch(relation){
+ switch (relation) {
case CPUFREQ_RELATION_L:
ppcr = sa11x0_freq_to_ppcr(target_freq);
if (sa11x0_ppcr_to_freq(ppcr) > policy->max)
@@ -280,11 +287,10 @@ static int sa1110_target(struct cpufreq_policy *policy,
* We wait 20ms to be safe.
*/
sdram_set_refresh(2);
- if (!irqs_disabled()) {
+ if (!irqs_disabled())
msleep(20);
- } else {
+ else
mdelay(20);
- }
/*
* Reprogram the DRAM timings with interrupts disabled, and
@@ -295,7 +301,7 @@ static int sa1110_target(struct cpufreq_policy *policy,
local_irq_save(flags);
asm("mcr p15, 0, %0, c7, c10, 4" : : "r" (0));
udelay(10);
- __asm__ __volatile__(" \n\
+ __asm__ __volatile__("\n\
b 2f \n\
.align 5 \n\
1: str %3, [%1, #0] @ MDCNFG \n\
@@ -336,7 +342,9 @@ static int __init sa1110_cpu_init(struct cpufreq_policy *policy)
return 0;
}
-static struct cpufreq_driver sa1110_driver = {
+/* sa1110_driver needs __refdata because it must remain after init registers
+ * it with cpufreq_register_driver() */
+static struct cpufreq_driver sa1110_driver __refdata = {
.flags = CPUFREQ_STICKY,
.verify = sa11x0_verify_speed,
.target = sa1110_target,
@@ -349,7 +357,8 @@ static struct sdram_params *sa1110_find_sdram(const char *name)
{
struct sdram_params *sdram;
- for (sdram = sdram_tbl; sdram < sdram_tbl + ARRAY_SIZE(sdram_tbl); sdram++)
+ for (sdram = sdram_tbl; sdram < sdram_tbl + ARRAY_SIZE(sdram_tbl);
+ sdram++)
if (strcmp(name, sdram->name) == 0)
return sdram;
@@ -369,14 +378,14 @@ static int __init sa1110_clk_init(void)
if (!name[0]) {
if (machine_is_assabet())
name = "TC59SM716-CL3";
-
if (machine_is_pt_system3())
name = "K4S641632D";
-
if (machine_is_h3100())
name = "KM416S4030CT";
if (machine_is_jornada720())
- name = "K4S281632B-1H";
+ name = "K4S281632B-1H";
+ if (machine_is_nanoengine())
+ name = "MT48LC8M16A2TG-75";
}
sdram = sa1110_find_sdram(name);