From: Baohua.Song@csr.com (Barry Song)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/3] ARM: CSR: PM: save/restore irq status in suspend cycles
Date: Tue, 13 Sep 2011 03:06:32 -0700 [thread overview]
Message-ID: <1315908393-362-3-git-send-email-Baohua.Song@csr.com> (raw)
In-Reply-To: <1315908393-362-1-git-send-email-Baohua.Song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
---
arch/arm/mach-prima2/irq.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 files changed, 40 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-prima2/irq.c b/arch/arm/mach-prima2/irq.c
index cf80a72..d93ceef 100644
--- a/arch/arm/mach-prima2/irq.c
+++ b/arch/arm/mach-prima2/irq.c
@@ -14,6 +14,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/irqdomain.h>
+#include <linux/syscore_ops.h>
#define SIRFSOC_INT_RISC_MASK0 0x0018
#define SIRFSOC_INT_RISC_MASK1 0x001C
@@ -73,3 +74,42 @@ void __init sirfsoc_of_irq_init(void)
sirfsoc_irq_init();
}
+
+struct sirfsoc_irq_status {
+ u32 mask0;
+ u32 mask1;
+ u32 level0;
+ u32 level1;
+};
+
+static struct sirfsoc_irq_status sirfsoc_irq_st;
+
+static int sirfsoc_irq_suspend(void)
+{
+ sirfsoc_irq_st.mask0 = readl_relaxed(sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK0);
+ sirfsoc_irq_st.mask1 = readl_relaxed(sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK1);
+ sirfsoc_irq_st.level0 = readl_relaxed(sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL0);
+ sirfsoc_irq_st.level1 = readl_relaxed(sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL1);
+
+ return 0;
+}
+
+static void sirfsoc_irq_resume(void)
+{
+ writel_relaxed(sirfsoc_irq_st.mask0, sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK0);
+ writel_relaxed(sirfsoc_irq_st.mask1, sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK1);
+ writel_relaxed(sirfsoc_irq_st.level0, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL0);
+ writel_relaxed(sirfsoc_irq_st.level1, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL1);
+}
+
+static struct syscore_ops sirfsoc_irq_syscore_ops = {
+ .suspend = sirfsoc_irq_suspend,
+ .resume = sirfsoc_irq_resume,
+};
+
+static int __init sirfsoc_irq_pm_init(void)
+{
+ register_syscore_ops(&sirfsoc_irq_syscore_ops);
+ return 0;
+}
+device_initcall(sirfsoc_irq_pm_init);
--
1.7.1
Member of the CSR plc group of companies. CSR plc registered in England and Wales, registered number 4187346, registered office Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom
More information can be found at www.csr.com. Follow CSR on Twitter at http://twitter.com/CSR_PLC and read our blog at www.csr.com/blog
next prev parent reply other threads:[~2011-09-13 10:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-13 10:06 [PATCH 0/3] ARCH: CSR: basic PM suspend/resume support Barry Song
2011-09-13 10:06 ` [PATCH 1/3] ARM: CSR: PM: save/restore timer status in suspend cycles Barry Song
2011-09-13 10:06 ` Barry Song [this message]
2011-09-13 10:06 ` [PATCH 3/3] ARM: CSR: PM: add sleep entry for SiRFprimaII Barry Song
2011-09-13 16:11 ` [PATCH 0/3] ARCH: CSR: basic PM suspend/resume support Arnd Bergmann
2011-09-14 1:37 ` Barry Song
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1315908393-362-3-git-send-email-Baohua.Song@csr.com \
--to=baohua.song@csr.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox