au1x00 GPIO2 power management

au1x00 GPIO2 power management

[Rodolfo Giometti]

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Hello,

attached patch adds support for power management for the secondary
general purpose I/O.

Ciao,

Rodolfo

-- 

GNU/Linux Solutions                  e-mail:    giometti@enneenne.com
Linux Device Driver                             giometti@gnudd.com
Embedded Systems                     		giometti@linux.it
UNIX programming                     phone:     +39 349 2432127

[-- Attachment #2: patch-gpio2-pm-support --]
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diff --git a/arch/mips/au1000/common/power.c b/arch/mips/au1000/common/power.c
index 9b47082..482de93 100644
--- a/arch/mips/au1000/common/power.c
+++ b/arch/mips/au1000/common/power.c
@@ -88,7 +88,10 @@ static DEFINE_SPINLOCK(pm_lock);
 static uint	sleep_aux_pll_cntrl;
 static uint	sleep_cpu_pll_cntrl;
 static uint	sleep_pin_function;
+static uint	sleep_gpio2_dir;
+static uint	sleep_gpio2_output;
 static uint	sleep_gpio2_enable;
+static uint	sleep_gpio2_inten;
 static uint	sleep_uart0_inten;
 static uint	sleep_uart0_fifoctl;
 static uint	sleep_uart0_linectl;
@@ -182,6 +185,10 @@ save_core_regs(void)
 	sleep_cpu_pll_cntrl = au_readl(SYS_CPUPLL);
 
 	sleep_pin_function = au_readl(SYS_PINFUNC);
+
+	sleep_gpio2_dir = au_readl(GPIO2_DIR);
+	sleep_gpio2_output = au_readl(GPIO2_OUTPUT);
+	sleep_gpio2_inten = au_readl(GPIO2_INTENABLE);
 	sleep_gpio2_enable = au_readl(GPIO2_ENABLE);
 
 	/* Save the static memory controller configuration.
@@ -209,7 +216,11 @@ restore_core_regs(void)
 	au_writel(sleep_aux_pll_cntrl, SYS_AUXPLL); au_sync();
 	au_writel(sleep_cpu_pll_cntrl, SYS_CPUPLL); au_sync();
 	au_writel(sleep_pin_function, SYS_PINFUNC); au_sync();
+
 	au_writel(sleep_gpio2_enable, GPIO2_ENABLE); au_sync();
+	au_writel(sleep_gpio2_dir, GPIO2_DIR); au_sync();
+	au_writel((sleep_gpio2_output<<16)|sleep_gpio2_output, GPIO2_OUTPUT); au_sync();
+	au_writel(sleep_gpio2_inten, GPIO2_INTENABLE); au_sync();
 
 	/* Restore the static memory controller configuration.
 	*/