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| author | Eric Miao <eric.miao@marvell.com> | 2008-09-03 18:06:34 +0800 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-09-26 23:43:20 +0100 |
| commit | 5a3d96519040f9736b9f8089e2a1e33a81a6eafe (patch) | |
| tree | be92df6b14ba6c9e420bc45d13a76b812991bb0c /arch/arm/mach-pxa/pxa25x.c | |
| parent | 4fa7c24e94b3f5bfb367bb847af3c3abd8cca3c0 (diff) | |
| download | linux-5a3d96519040f9736b9f8089e2a1e33a81a6eafe.tar.gz | |
[ARM] pxa: better MFP low power state support for pxa25x/pxa27x
When configured as a specific low power state: MFP_LPM_DRIVE_LOW, MFP_LPM_DRIVE_HIGH, the corresponding GPDR register bit during low power mode shall be re-configured as output (if they are not configured so), thus the PGSRx bits can output. Create an additional low power values GPDR registers, and properly save/restore the GAFR + GPDR registers when doing suspend/resume. Signed-off-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/pxa25x.c')
| -rw-r--r-- | arch/arm/mach-pxa/pxa25x.c | 28 |
1 files changed, 3 insertions, 25 deletions
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index 305452b56e91..f0eda2094494 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -203,33 +203,17 @@ static struct clk pxa25x_clks[] = { * More ones like CP and general purpose register values are preserved * with the stack pointer in sleep.S. */ -enum { SLEEP_SAVE_PGSR0, SLEEP_SAVE_PGSR1, SLEEP_SAVE_PGSR2, - - SLEEP_SAVE_GAFR0_L, SLEEP_SAVE_GAFR0_U, - SLEEP_SAVE_GAFR1_L, SLEEP_SAVE_GAFR1_U, - SLEEP_SAVE_GAFR2_L, SLEEP_SAVE_GAFR2_U, - +enum { SLEEP_SAVE_PSTR, - SLEEP_SAVE_CKEN, - SLEEP_SAVE_COUNT }; static void pxa25x_cpu_pm_save(unsigned long *sleep_save) { - SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2); - - SAVE(GAFR0_L); SAVE(GAFR0_U); - SAVE(GAFR1_L); SAVE(GAFR1_U); - SAVE(GAFR2_L); SAVE(GAFR2_U); - SAVE(CKEN); SAVE(PSTR); - - /* Clear GPIO transition detect bits */ - GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2; } static void pxa25x_cpu_pm_restore(unsigned long *sleep_save) @@ -237,14 +221,6 @@ static void pxa25x_cpu_pm_restore(unsigned long *sleep_save) /* ensure not to come back here if it wasn't intended */ PSPR = 0; - /* restore registers */ - RESTORE(GAFR0_L); RESTORE(GAFR0_U); - RESTORE(GAFR1_L); RESTORE(GAFR1_U); - RESTORE(GAFR2_L); RESTORE(GAFR2_U); - RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2); - - PSSR = PSSR_RDH | PSSR_PH; - RESTORE(CKEN); RESTORE(PSTR); } @@ -330,6 +306,8 @@ static struct sys_device pxa25x_sysdev[] = { { .cls = &pxa_irq_sysclass, }, { + .cls = &pxa2xx_mfp_sysclass, + }, { .cls = &pxa_gpio_sysclass, }, }; |