From: Kevin Hilman <khilman@ti.com> To: linux-omap@vger.kernel.org, Paul Walmsley <paul@pwsan.com> Cc: linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/3] ARM: OMAP: omap_device: keep track of driver bound status Date: Tue, 10 Jul 2012 16:02:02 -0700 [thread overview] Message-ID: <1341961324-19657-1-git-send-email-khilman@ti.com> (raw) Use the bus notifier to keep track of driver bound status by adding a new internal field to struct omap_device: _driver_staus. This will be useful for follow-up patches which need to know whether or not a driver is bound in order to make intelligent omap_device enable/idle decisions. Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kevin Hilman <khilman@ti.com> --- arch/arm/plat-omap/include/plat/omap_device.h | 2 ++ arch/arm/plat-omap/omap_device.c | 14 +++++++++----- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/arch/arm/plat-omap/include/plat/omap_device.h b/arch/arm/plat-omap/include/plat/omap_device.h index 4327b2c..e0486cb 100644 --- a/arch/arm/plat-omap/include/plat/omap_device.h +++ b/arch/arm/plat-omap/include/plat/omap_device.h @@ -60,6 +60,7 @@ extern struct dev_pm_domain omap_device_pm_domain; * @_dev_wakeup_lat_limit: dev wakeup latency limit in nsec - set by OMAP PM * @_state: one of OMAP_DEVICE_STATE_* (see above) * @flags: device flags + * @_driver_status: one of BUS_NOTIFY_*_DRIVER from <linux/device.h> * * Integrates omap_hwmod data into Linux platform_device. * @@ -78,6 +79,7 @@ struct omap_device { u8 hwmods_cnt; u8 _state; u8 flags; + u8 _driver_status; }; /* Device driver interface (call via platform_data fn ptrs) */ diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c index c490240..1d1b5ff 100644 --- a/arch/arm/plat-omap/omap_device.c +++ b/arch/arm/plat-omap/omap_device.c @@ -385,17 +385,21 @@ static int _omap_device_notifier_call(struct notifier_block *nb, unsigned long event, void *dev) { struct platform_device *pdev = to_platform_device(dev); + struct omap_device *od; switch (event) { - case BUS_NOTIFY_ADD_DEVICE: - if (pdev->dev.of_node) - omap_device_build_from_dt(pdev); - break; - case BUS_NOTIFY_DEL_DEVICE: if (pdev->archdata.od) omap_device_delete(pdev->archdata.od); break; + case BUS_NOTIFY_ADD_DEVICE: + if (pdev->dev.of_node) + omap_device_build_from_dt(pdev); + /* fall through */ + default: + od = to_omap_device(pdev); + if (od) + od->_driver_status = event; } return NOTIFY_DONE; -- 1.7.9.2
WARNING: multiple messages have this Message-ID (diff)
From: khilman@ti.com (Kevin Hilman) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/3] ARM: OMAP: omap_device: keep track of driver bound status Date: Tue, 10 Jul 2012 16:02:02 -0700 [thread overview] Message-ID: <1341961324-19657-1-git-send-email-khilman@ti.com> (raw) Use the bus notifier to keep track of driver bound status by adding a new internal field to struct omap_device: _driver_staus. This will be useful for follow-up patches which need to know whether or not a driver is bound in order to make intelligent omap_device enable/idle decisions. Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kevin Hilman <khilman@ti.com> --- arch/arm/plat-omap/include/plat/omap_device.h | 2 ++ arch/arm/plat-omap/omap_device.c | 14 +++++++++----- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/arch/arm/plat-omap/include/plat/omap_device.h b/arch/arm/plat-omap/include/plat/omap_device.h index 4327b2c..e0486cb 100644 --- a/arch/arm/plat-omap/include/plat/omap_device.h +++ b/arch/arm/plat-omap/include/plat/omap_device.h @@ -60,6 +60,7 @@ extern struct dev_pm_domain omap_device_pm_domain; * @_dev_wakeup_lat_limit: dev wakeup latency limit in nsec - set by OMAP PM * @_state: one of OMAP_DEVICE_STATE_* (see above) * @flags: device flags + * @_driver_status: one of BUS_NOTIFY_*_DRIVER from <linux/device.h> * * Integrates omap_hwmod data into Linux platform_device. * @@ -78,6 +79,7 @@ struct omap_device { u8 hwmods_cnt; u8 _state; u8 flags; + u8 _driver_status; }; /* Device driver interface (call via platform_data fn ptrs) */ diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c index c490240..1d1b5ff 100644 --- a/arch/arm/plat-omap/omap_device.c +++ b/arch/arm/plat-omap/omap_device.c @@ -385,17 +385,21 @@ static int _omap_device_notifier_call(struct notifier_block *nb, unsigned long event, void *dev) { struct platform_device *pdev = to_platform_device(dev); + struct omap_device *od; switch (event) { - case BUS_NOTIFY_ADD_DEVICE: - if (pdev->dev.of_node) - omap_device_build_from_dt(pdev); - break; - case BUS_NOTIFY_DEL_DEVICE: if (pdev->archdata.od) omap_device_delete(pdev->archdata.od); break; + case BUS_NOTIFY_ADD_DEVICE: + if (pdev->dev.of_node) + omap_device_build_from_dt(pdev); + /* fall through */ + default: + od = to_omap_device(pdev); + if (od) + od->_driver_status = event; } return NOTIFY_DONE; -- 1.7.9.2
next reply other threads:[~2012-07-10 23:02 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-07-10 23:02 Kevin Hilman [this message] 2012-07-10 23:02 ` [PATCH 1/3] ARM: OMAP: omap_device: keep track of driver bound status Kevin Hilman 2012-07-10 23:02 ` [PATCH 2/3] ARM: OMAP: omap_device: don't attempt late suspend if no driver bound Kevin Hilman 2012-07-10 23:02 ` Kevin Hilman 2012-07-10 23:02 ` [PATCH 3/3] ARM: OMAP: omap_device: idle devices with " Kevin Hilman 2012-07-10 23:02 ` Kevin Hilman 2012-08-07 21:26 ` [PATCH 1/3] ARM: OMAP: omap_device: keep track of driver bound status Paul Walmsley 2012-08-07 21:26 ` Paul Walmsley 2012-08-07 21:49 ` Kevin Hilman 2012-08-07 21:49 ` Kevin Hilman
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