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author | Andres Salomon <dilinger@queued.net> | 2012-07-17 01:26:10 -0700 |
---|---|---|
committer | Andres Salomon <dilinger@queued.net> | 2012-07-31 23:27:31 -0400 |
commit | 1fcfd08bd0704e1888bd73153e8d2ca3640e22f2 (patch) | |
tree | 8aacc28564c985e96927ec16360ef9b4d73efb45 /arch | |
parent | 99ecb01cdf0378783b317b8f839ac9cc5e128aa5 (diff) | |
download | linux-stable-1fcfd08bd0704e1888bd73153e8d2ca3640e22f2.tar.gz linux-stable-1fcfd08bd0704e1888bd73153e8d2ca3640e22f2.tar.bz2 linux-stable-1fcfd08bd0704e1888bd73153e8d2ca3640e22f2.zip |
x86: OLPC: move s/r-related EC cmds to EC driver
The new EC driver calls platform-specific suspend and resume hooks; run
XO-1-specific EC commands from there, rather than deep in s/r code. If we
attempt to run EC commands after the new EC driver has suspended, it is
refused by the ec->suspended checks.
Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: Paul Fox <pgf@laptop.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/platform/olpc/olpc-xo1-pm.c | 15 | ||||
-rw-r--r-- | arch/x86/platform/olpc/olpc.c | 43 |
2 files changed, 36 insertions, 22 deletions
diff --git a/arch/x86/platform/olpc/olpc-xo1-pm.c b/arch/x86/platform/olpc/olpc-xo1-pm.c index 8054b64ec4ce..d75582d1aa55 100644 --- a/arch/x86/platform/olpc/olpc-xo1-pm.c +++ b/arch/x86/platform/olpc/olpc-xo1-pm.c @@ -52,16 +52,11 @@ EXPORT_SYMBOL_GPL(olpc_xo1_pm_wakeup_clear); static int xo1_power_state_enter(suspend_state_t pm_state) { unsigned long saved_sci_mask; - int r; /* Only STR is supported */ if (pm_state != PM_SUSPEND_MEM) return -EINVAL; - r = olpc_ec_cmd(EC_SET_SCI_INHIBIT, NULL, 0, NULL, 0); - if (r) - return r; - /* * Save SCI mask (this gets lost since PM1_EN is used as a mask for * wakeup events, which is not necessarily the same event set) @@ -77,16 +72,6 @@ static int xo1_power_state_enter(suspend_state_t pm_state) /* Restore SCI mask (using dword access to CS5536_PM1_EN) */ outl(saved_sci_mask, acpi_base + CS5536_PM1_STS); - /* Tell the EC to stop inhibiting SCIs */ - olpc_ec_cmd(EC_SET_SCI_INHIBIT_RELEASE, NULL, 0, NULL, 0); - - /* - * Tell the wireless module to restart USB communication. - * Must be done twice. - */ - olpc_ec_cmd(EC_WAKE_UP_WLAN, NULL, 0, NULL, 0); - olpc_ec_cmd(EC_WAKE_UP_WLAN, NULL, 0, NULL, 0); - return 0; } diff --git a/arch/x86/platform/olpc/olpc.c b/arch/x86/platform/olpc/olpc.c index ed41b437b37b..27376081ddec 100644 --- a/arch/x86/platform/olpc/olpc.c +++ b/arch/x86/platform/olpc/olpc.c @@ -263,11 +263,6 @@ int olpc_ec_sci_query(u16 *sci_value) } EXPORT_SYMBOL_GPL(olpc_ec_sci_query); -static int olpc_ec_suspend(struct platform_device *pdev) -{ - return olpc_ec_mask_write(ec_wakeup_mask); -} - static bool __init check_ofw_architecture(struct device_node *root) { const char *olpc_arch; @@ -339,9 +334,40 @@ static int olpc_xo1_ec_probe(struct platform_device *pdev) return 0; } +static int olpc_xo1_ec_suspend(struct platform_device *pdev) +{ + olpc_ec_mask_write(ec_wakeup_mask); + + /* + * Squelch SCIs while suspended. This is a fix for + * <http://dev.laptop.org/ticket/1835>. + */ + return olpc_ec_cmd(EC_SET_SCI_INHIBIT, NULL, 0, NULL, 0); +} + +static int olpc_xo1_ec_resume(struct platform_device *pdev) +{ + /* Tell the EC to stop inhibiting SCIs */ + olpc_ec_cmd(EC_SET_SCI_INHIBIT_RELEASE, NULL, 0, NULL, 0); + + /* + * Tell the wireless module to restart USB communication. + * Must be done twice. + */ + olpc_ec_cmd(EC_WAKE_UP_WLAN, NULL, 0, NULL, 0); + olpc_ec_cmd(EC_WAKE_UP_WLAN, NULL, 0, NULL, 0); + + return 0; +} static struct olpc_ec_driver ec_xo1_driver = { - .suspend = olpc_ec_suspend, + .probe = olpc_xo1_ec_probe, + .suspend = olpc_xo1_ec_suspend, + .resume = olpc_xo1_ec_resume, + .ec_cmd = olpc_xo1_ec_cmd, +}; + +static struct olpc_ec_driver ec_xo1_5_driver = { .probe = olpc_xo1_ec_probe, .ec_cmd = olpc_xo1_ec_cmd, }; @@ -354,7 +380,10 @@ static int __init olpc_init(void) return 0; /* register the XO-1 and 1.5-specific EC handler */ - olpc_ec_driver_register(&ec_xo1_driver, NULL); + if (olpc_platform_info.boardrev < olpc_board_pre(0xd0)) /* XO-1 */ + olpc_ec_driver_register(&ec_xo1_driver, NULL); + else + olpc_ec_driver_register(&ec_xo1_5_driver, NULL); platform_device_register_simple("olpc-ec", -1, NULL, 0); /* assume B1 and above models always have a DCON */ |