hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[ARM] 5031/1: Indentation correction in cpu-pxa.c. 

These indentation corrections prepare the pxa27x support.

Signed-off-by: Robert Jarzmik <rjarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Robert Jarzmik 2008-05-07 20:36:34 +01:00 committed by Russell King
parent ebdf982aae
commit 3679389b88
1 changed files with 51 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

98
arch/arm/mach-pxa/cpu-pxa.c
View File

@ -57,29 +57,29 @@ typedef struct {
} pxa_freqs_t; } pxa_freqs_t;
/* Define the refresh period in mSec for the SDRAM and the number of rows */ /* Define the refresh period in mSec for the SDRAM and the number of rows */
#define SDRAM_TREF 64 /* standard 64ms SDRAM */ #define SDRAM_TREF 64 /* standard 64ms SDRAM */
#define SDRAM_ROWS 4096 /* 64MB=8192 32MB=4096 */ #define SDRAM_ROWS 4096 /* 64MB=8192 32MB=4096 */
#define MDREFR_DRI(x) (((x) * SDRAM_TREF) / (SDRAM_ROWS * 32)) #define MDREFR_DRI(x) (((x) * SDRAM_TREF) / (SDRAM_ROWS * 32))
#define CCLKCFG_TURBO 0x1 #define CCLKCFG_TURBO 0x1
#define CCLKCFG_FCS 0x2 #define CCLKCFG_FCS 0x2
#define PXA25x_MIN_FREQ 99500 #define PXA25x_MIN_FREQ 99500
#define PXA25x_MAX_FREQ 398100 #define PXA25x_MAX_FREQ 398100
#define MDREFR_DB2_MASK (MDREFR_K2DB2 | MDREFR_K1DB2) #define MDREFR_DB2_MASK (MDREFR_K2DB2 | MDREFR_K1DB2)
#define MDREFR_DRI_MASK 0xFFF #define MDREFR_DRI_MASK 0xFFF
/* Use the run mode frequencies for the CPUFREQ_POLICY_PERFORMANCE policy */ /* Use the run mode frequencies for the CPUFREQ_POLICY_PERFORMANCE policy */
static pxa_freqs_t pxa255_run_freqs[] = static pxa_freqs_t pxa255_run_freqs[] =
{ {
/* CPU MEMBUS CCCR DIV2*/ /* CPU MEMBUS CCCR DIV2 run turbo PXbus SDRAM */
{ 99500, 99500, 0x121, 1}, /* run= 99, turbo= 99, PXbus=50, SDRAM=50 */ { 99500, 99500, 0x121, 1}, /* 99, 99, 50, 50 */
{132700, 132700, 0x123, 1}, /* run=133, turbo=133, PXbus=66, SDRAM=66 */ {132700, 132700, 0x123, 1}, /* 133, 133, 66, 66 */
{199100, 99500, 0x141, 0}, /* run=199, turbo=199, PXbus=99, SDRAM=99 */ {199100, 99500, 0x141, 0}, /* 199, 199, 99, 99 */
{265400, 132700, 0x143, 1}, /* run=265, turbo=265, PXbus=133, SDRAM=66 */ {265400, 132700, 0x143, 1}, /* 265, 265, 133, 66 */
{331800, 165900, 0x145, 1}, /* run=331, turbo=331, PXbus=166, SDRAM=83 */ {331800, 165900, 0x145, 1}, /* 331, 331, 166, 83 */
{398100, 99500, 0x161, 0}, /* run=398, turbo=398, PXbus=196, SDRAM=99 */ {398100, 99500, 0x161, 0}, /* 398, 398, 196, 99 */
{0,} {0,}
}; };
#define NUM_RUN_FREQS ARRAY_SIZE(pxa255_run_freqs) #define NUM_RUN_FREQS ARRAY_SIZE(pxa255_run_freqs)
@ -88,17 +88,18 @@ static struct cpufreq_frequency_table pxa255_run_freq_table[NUM_RUN_FREQS+1];
/* Use the turbo mode frequencies for the CPUFREQ_POLICY_POWERSAVE policy */ /* Use the turbo mode frequencies for the CPUFREQ_POLICY_POWERSAVE policy */
static pxa_freqs_t pxa255_turbo_freqs[] = static pxa_freqs_t pxa255_turbo_freqs[] =
{ {
/* CPU MEMBUS CCCR DIV2*/ /* CPU MEMBUS CCCR DIV2 run turbo PXbus SDRAM */
{ 99500, 99500, 0x121, 1}, /* run=99, turbo= 99, PXbus=50, SDRAM=50 */ { 99500, 99500, 0x121, 1}, /* 99, 99, 50, 50 */
{199100, 99500, 0x221, 0}, /* run=99, turbo=199, PXbus=50, SDRAM=99 */ {199100, 99500, 0x221, 0}, /* 99, 199, 50, 99 */
{298500, 99500, 0x321, 0}, /* run=99, turbo=287, PXbus=50, SDRAM=99 */ {298500, 99500, 0x321, 0}, /* 99, 287, 50, 99 */
{298600, 99500, 0x1c1, 0}, /* run=199, turbo=287, PXbus=99, SDRAM=99 */ {298600, 99500, 0x1c1, 0}, /* 199, 287, 99, 99 */
{398100, 99500, 0x241, 0}, /* run=199, turbo=398, PXbus=99, SDRAM=99 */ {398100, 99500, 0x241, 0}, /* 199, 398, 99, 99 */
{0,} {0,}
}; };
#define NUM_TURBO_FREQS ARRAY_SIZE(pxa255_turbo_freqs) #define NUM_TURBO_FREQS ARRAY_SIZE(pxa255_turbo_freqs)
static struct cpufreq_frequency_table pxa255_turbo_freq_table[NUM_TURBO_FREQS+1]; static struct cpufreq_frequency_table
pxa255_turbo_freq_table[NUM_TURBO_FREQS+1];
extern unsigned get_clk_frequency_khz(int info); extern unsigned get_clk_frequency_khz(int info);
@ -122,14 +123,14 @@ static int pxa_verify_policy(struct cpufreq_policy *policy)
if (freq_debug) if (freq_debug)
pr_debug("Verified CPU policy: %dKhz min to %dKhz max\n", pr_debug("Verified CPU policy: %dKhz min to %dKhz max\n",
policy->min, policy->max); policy->min, policy->max);
return ret; return ret;
} }
static int pxa_set_target(struct cpufreq_policy *policy, static int pxa_set_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int target_freq,
unsigned int relation) unsigned int relation)
{ {
struct cpufreq_frequency_table *pxa_freqs_table; struct cpufreq_frequency_table *pxa_freqs_table;
pxa_freqs_t *pxa_freq_settings; pxa_freqs_t *pxa_freq_settings;
@ -155,7 +156,7 @@ static int pxa_set_target(struct cpufreq_policy *policy,
/* Lookup the next frequency */ /* Lookup the next frequency */
if (cpufreq_frequency_table_target(policy, pxa_freqs_table, if (cpufreq_frequency_table_target(policy, pxa_freqs_table,
target_freq, relation, &idx)) { target_freq, relation, &idx)) {
return -EINVAL; return -EINVAL;
} }
@ -164,10 +165,11 @@ static int pxa_set_target(struct cpufreq_policy *policy,
freqs.cpu = policy->cpu; freqs.cpu = policy->cpu;
if (freq_debug) if (freq_debug)
pr_debug(KERN_INFO "Changing CPU frequency to %d Mhz, (SDRAM %d Mhz)\n", pr_debug(KERN_INFO "Changing CPU frequency to %d Mhz, "
freqs.new / 1000, (pxa_freq_settings[idx].div2) ? "(SDRAM %d Mhz)\n",
(pxa_freq_settings[idx].membus / 2000) : freqs.new / 1000, (pxa_freq_settings[idx].div2) ?
(pxa_freq_settings[idx].membus / 1000)); (pxa_freq_settings[idx].membus / 2000) :
(pxa_freq_settings[idx].membus / 1000));
/* /*
* Tell everyone what we're about to do... * Tell everyone what we're about to do...
@ -177,16 +179,17 @@ static int pxa_set_target(struct cpufreq_policy *policy,
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
/* Calculate the next MDREFR. If we're slowing down the SDRAM clock /* Calculate the next MDREFR. If we're slowing down the SDRAM clock
* we need to preset the smaller DRI before the change. If we're speeding * we need to preset the smaller DRI before the change. If we're
* up we need to set the larger DRI value after the change. * speeding up we need to set the larger DRI value after the change.
*/ */
preset_mdrefr = postset_mdrefr = MDREFR; preset_mdrefr = postset_mdrefr = MDREFR;
if ((MDREFR & MDREFR_DRI_MASK) > MDREFR_DRI(pxa_freq_settings[idx].membus)) { if ((MDREFR & MDREFR_DRI_MASK) >
MDREFR_DRI(pxa_freq_settings[idx].membus)) {
preset_mdrefr = (preset_mdrefr & ~MDREFR_DRI_MASK) | preset_mdrefr = (preset_mdrefr & ~MDREFR_DRI_MASK) |
MDREFR_DRI(pxa_freq_settings[idx].membus); MDREFR_DRI(pxa_freq_settings[idx].membus);
} }
postset_mdrefr = (postset_mdrefr & ~MDREFR_DRI_MASK) | postset_mdrefr = (postset_mdrefr & ~MDREFR_DRI_MASK) |
MDREFR_DRI(pxa_freq_settings[idx].membus); MDREFR_DRI(pxa_freq_settings[idx].membus);
/* If we're dividing the memory clock by two for the SDRAM clock, this /* If we're dividing the memory clock by two for the SDRAM clock, this
* must be set prior to the change. Clearing the divide must be done * must be set prior to the change. Clearing the divide must be done
@ -207,7 +210,7 @@ static int pxa_set_target(struct cpufreq_policy *policy,
asm volatile(" \n\ asm volatile(" \n\
ldr r4, [%1] /* load MDREFR */ \n\ ldr r4, [%1] /* load MDREFR */ \n\
b 2f \n\ b 2f \n\
.align 5 \n\ .align 5 \n\
1: \n\ 1: \n\
str %4, [%1] /* preset the MDREFR */ \n\ str %4, [%1] /* preset the MDREFR */ \n\
mcr p14, 0, %2, c6, c0, 0 /* set CCLKCFG[FCS] */ \n\ mcr p14, 0, %2, c6, c0, 0 /* set CCLKCFG[FCS] */ \n\
@ -217,10 +220,10 @@ static int pxa_set_target(struct cpufreq_policy *policy,
2: b 1b \n\ 2: b 1b \n\
3: nop \n\ 3: nop \n\
" "
: "=&r" (unused) : "=&r" (unused)
: "r" (&MDREFR), "r" (CCLKCFG_TURBO|CCLKCFG_FCS), "r" (ramstart), : "r" (&MDREFR), "r" (CCLKCFG_TURBO|CCLKCFG_FCS), "r" (ramstart),
"r" (preset_mdrefr), "r" (postset_mdrefr) "r" (preset_mdrefr), "r" (postset_mdrefr)
: "r4", "r5"); : "r4", "r5");
local_irq_restore(flags); local_irq_restore(flags);
/* /*
@ -248,7 +251,7 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
policy->cpuinfo.max_freq = PXA25x_MAX_FREQ; policy->cpuinfo.max_freq = PXA25x_MAX_FREQ;
policy->cpuinfo.min_freq = PXA25x_MIN_FREQ; policy->cpuinfo.min_freq = PXA25x_MIN_FREQ;
policy->cpuinfo.transition_latency = 1000; /* FIXME: 1 ms, assumed */ policy->cpuinfo.transition_latency = 1000; /* FIXME: 1 ms, assumed */
policy->cur = get_clk_frequency_khz(0); /* current freq */ policy->cur = get_clk_frequency_khz(0); /* current freq */
policy->min = policy->max = policy->cur; policy->min = policy->max = policy->cur;
/* Generate the run cpufreq_frequency_table struct */ /* Generate the run cpufreq_frequency_table struct */
@ -260,7 +263,8 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
pxa255_run_freq_table[i].frequency = CPUFREQ_TABLE_END; pxa255_run_freq_table[i].frequency = CPUFREQ_TABLE_END;
/* Generate the turbo cpufreq_frequency_table struct */ /* Generate the turbo cpufreq_frequency_table struct */
for (i = 0; i < NUM_TURBO_FREQS; i++) { for (i = 0; i < NUM_TURBO_FREQS; i++) {
pxa255_turbo_freq_table[i].frequency = pxa255_turbo_freqs[i].khz; pxa255_turbo_freq_table[i].frequency =
pxa255_turbo_freqs[i].khz;
pxa255_turbo_freq_table[i].index = i; pxa255_turbo_freq_table[i].index = i;
} }
pxa255_turbo_freq_table[i].frequency = CPUFREQ_TABLE_END; pxa255_turbo_freq_table[i].frequency = CPUFREQ_TABLE_END;
@ -293,8 +297,8 @@ static void __exit pxa_cpu_exit(void)
} }
MODULE_AUTHOR ("Intrinsyc Software Inc."); MODULE_AUTHOR("Intrinsyc Software Inc.");
MODULE_DESCRIPTION ("CPU frequency changing driver for the PXA architecture"); MODULE_DESCRIPTION("CPU frequency changing driver for the PXA architecture");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
module_init(pxa_cpu_init); module_init(pxa_cpu_init);
module_exit(pxa_cpu_exit); module_exit(pxa_cpu_exit);