From 392a325c4351339cfbf182bb5a1444df1cf65dbb Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Tue, 10 Jul 2012 19:31:51 -0700 Subject: Platform: OLPC: add a stub to drivers/platform/ for the OLPC EC driver The OLPC EC driver has outgrown arch/x86/platform/. It's time to both share common code amongst different architectures, as well as move it out of arch/x86/. The XO-1.75 is ARM-based, and the EC driver shares a lot of code with the x86 code. Signed-off-by: Andres Salomon Acked-by: Paul Fox Reviewed-by: Thomas Gleixner --- drivers/platform/Makefile | 1 + drivers/platform/olpc/Makefile | 4 ++++ drivers/platform/olpc/olpc-ec.c | 16 ++++++++++++++++ 3 files changed, 21 insertions(+) create mode 100644 drivers/platform/olpc/Makefile create mode 100644 drivers/platform/olpc/olpc-ec.c (limited to 'drivers/platform') diff --git a/drivers/platform/Makefile b/drivers/platform/Makefile index 782953ae4c03..b17c16ce54ad 100644 --- a/drivers/platform/Makefile +++ b/drivers/platform/Makefile @@ -3,3 +3,4 @@ # obj-$(CONFIG_X86) += x86/ +obj-$(CONFIG_OLPC) += olpc/ diff --git a/drivers/platform/olpc/Makefile b/drivers/platform/olpc/Makefile new file mode 100644 index 000000000000..dc8b26bc7209 --- /dev/null +++ b/drivers/platform/olpc/Makefile @@ -0,0 +1,4 @@ +# +# OLPC XO platform-specific drivers +# +obj-$(CONFIG_OLPC) += olpc-ec.o diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c new file mode 100644 index 000000000000..42026036cd3e --- /dev/null +++ b/drivers/platform/olpc/olpc-ec.c @@ -0,0 +1,16 @@ +/* + * Generic driver for the OLPC Embedded Controller. + * + * Copyright (C) 2011-2012 One Laptop per Child Foundation. + * + * Licensed under the GPL v2 or later. + */ +#include +#include + +int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) +{ + /* Currently a stub; this will be expanded upon later. */ + return olpc_ec_cmd_x86(cmd, inbuf, inlen, outbuf, outlen); +} +EXPORT_SYMBOL_GPL(olpc_ec_cmd); -- cgit v1.2.3 From 3bf9428f220911795edde453a95f9509945004e5 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Wed, 11 Jul 2012 01:16:29 -0700 Subject: drivers: OLPC: update various drivers to include olpc-ec.h Switch over to using olpc-ec.h in multiple steps, so as not to break builds. This covers every driver that calls olpc_ec_cmd(). Signed-off-by: Andres Salomon Acked-by: Paul Fox Reviewed-by: Thomas Gleixner --- drivers/platform/x86/xo1-rfkill.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/xo1-rfkill.c b/drivers/platform/x86/xo1-rfkill.c index b57ad8641480..1da13ed34b04 100644 --- a/drivers/platform/x86/xo1-rfkill.c +++ b/drivers/platform/x86/xo1-rfkill.c @@ -12,8 +12,7 @@ #include #include #include - -#include +#include static bool card_blocked; -- cgit v1.2.3 From 3d26c20bae9e97c98f7240184427d3a38515d406 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Wed, 11 Jul 2012 17:40:25 -0700 Subject: Platform: OLPC: allow EC cmd to be overridden, and create a workqueue to call it This provides a new API allows different OLPC architectures to override the EC driver. x86 and ARM OLPC machines use completely different EC backends. The olpc_ec_cmd is synchronous, and waits for the workqueue to send the command to the EC. Multiple callers can run olpc_ec_cmd() at once, and they will by serialized and sleep while only one executes on the EC at a time. We don't provide an unregister function, as that doesn't make sense within the context of OLPC machines - there's only ever 1 EC, it's critical to functionality, and it certainly not hotpluggable. Signed-off-by: Andres Salomon Acked-by: Paul Fox Reviewed-by: Thomas Gleixner --- drivers/platform/olpc/olpc-ec.c | 112 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 110 insertions(+), 2 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c index 42026036cd3e..44e6a4fae79b 100644 --- a/drivers/platform/olpc/olpc-ec.c +++ b/drivers/platform/olpc/olpc-ec.c @@ -5,12 +5,120 @@ * * Licensed under the GPL v2 or later. */ +#include +#include +#include +#include #include +#include +#include #include +struct ec_cmd_desc { + u8 cmd; + u8 *inbuf, *outbuf; + size_t inlen, outlen; + + int err; + struct completion finished; + struct list_head node; + + void *priv; +}; + +static void olpc_ec_worker(struct work_struct *w); + +static DECLARE_WORK(ec_worker, olpc_ec_worker); +static LIST_HEAD(ec_cmd_q); +static DEFINE_SPINLOCK(ec_cmd_q_lock); + +static struct olpc_ec_driver *ec_driver; +static void *ec_cb_arg; +static DEFINE_MUTEX(ec_cb_lock); + +void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg) +{ + ec_driver = drv; + ec_cb_arg = arg; +} +EXPORT_SYMBOL_GPL(olpc_ec_driver_register); + +static void olpc_ec_worker(struct work_struct *w) +{ + struct ec_cmd_desc *desc = NULL; + unsigned long flags; + + /* Grab the first pending command from the queue */ + spin_lock_irqsave(&ec_cmd_q_lock, flags); + if (!list_empty(&ec_cmd_q)) { + desc = list_first_entry(&ec_cmd_q, struct ec_cmd_desc, node); + list_del(&desc->node); + } + spin_unlock_irqrestore(&ec_cmd_q_lock, flags); + + /* Do we actually have anything to do? */ + if (!desc) + return; + + /* Protect the EC hw with a mutex; only run one cmd at a time */ + mutex_lock(&ec_cb_lock); + desc->err = ec_driver->ec_cmd(desc->cmd, desc->inbuf, desc->inlen, + desc->outbuf, desc->outlen, ec_cb_arg); + mutex_unlock(&ec_cb_lock); + + /* Finished, wake up olpc_ec_cmd() */ + complete(&desc->finished); + + /* Run the worker thread again in case there are more cmds pending */ + schedule_work(&ec_worker); +} + +/* + * Throw a cmd descripter onto the list. We now have SMP OLPC machines, so + * locking is pretty critical. + */ +static void queue_ec_descriptor(struct ec_cmd_desc *desc) +{ + unsigned long flags; + + INIT_LIST_HEAD(&desc->node); + + spin_lock_irqsave(&ec_cmd_q_lock, flags); + list_add_tail(&desc->node, &ec_cmd_q); + spin_unlock_irqrestore(&ec_cmd_q_lock, flags); + + schedule_work(&ec_worker); +} + int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) { - /* Currently a stub; this will be expanded upon later. */ - return olpc_ec_cmd_x86(cmd, inbuf, inlen, outbuf, outlen); + struct ec_cmd_desc desc; + + /* XXX: this will be removed in later patches */ + /* Are we using old-style callers? */ + if (!ec_driver || !ec_driver->ec_cmd) + return olpc_ec_cmd_x86(cmd, inbuf, inlen, outbuf, outlen); + + /* Ensure a driver and ec hook have been registered */ + if (WARN_ON(!ec_driver || !ec_driver->ec_cmd)) + return -ENODEV; + + might_sleep(); + + desc.cmd = cmd; + desc.inbuf = inbuf; + desc.outbuf = outbuf; + desc.inlen = inlen; + desc.outlen = outlen; + desc.err = 0; + init_completion(&desc.finished); + + queue_ec_descriptor(&desc); + + /* Timeouts must be handled in the platform-specific EC hook */ + wait_for_completion(&desc.finished); + + /* The worker thread dequeues the cmd; no need to do anything here */ + return desc.err; } EXPORT_SYMBOL_GPL(olpc_ec_cmd); -- cgit v1.2.3 From ac2504151f5af27bbf0c0362b7da5951e05dfc43 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Fri, 13 Jul 2012 05:57:17 -0700 Subject: Platform: OLPC: turn EC driver into a platform_driver The 1.75-based OLPC EC driver already does this; let's do it for all EC drivers. This gives us nice suspend/resume hooks, amongst other things. We want to run the EC's suspend hooks later than other drivers (which may be setting wakeup masks or be running EC commands). We also want to run the EC's resume hooks earlier than other drivers (which may want to run EC commands). Signed-off-by: Andres Salomon Acked-by: Paul Fox Reviewed-by: Thomas Gleixner --- drivers/platform/olpc/olpc-ec.c | 48 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) (limited to 'drivers/platform') diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c index 44e6a4fae79b..d00523c65191 100644 --- a/drivers/platform/olpc/olpc-ec.c +++ b/drivers/platform/olpc/olpc-ec.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -122,3 +123,50 @@ int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) return desc.err; } EXPORT_SYMBOL_GPL(olpc_ec_cmd); + +static int olpc_ec_probe(struct platform_device *pdev) +{ + int err; + + if (!ec_driver) + return -ENODEV; + + err = ec_driver->probe ? ec_driver->probe(pdev) : 0; + + return err; +} + +static int olpc_ec_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + return ec_driver->suspend ? ec_driver->suspend(pdev) : 0; +} + +static int olpc_ec_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + return ec_driver->resume ? ec_driver->resume(pdev) : 0; +} + +static const struct dev_pm_ops olpc_ec_pm_ops = { + .suspend_late = olpc_ec_suspend, + .resume_early = olpc_ec_resume, +}; + +static struct platform_driver olpc_ec_plat_driver = { + .probe = olpc_ec_probe, + .driver = { + .name = "olpc-ec", + .pm = &olpc_ec_pm_ops, + }, +}; + +static int __init olpc_ec_init_module(void) +{ + return platform_driver_register(&olpc_ec_plat_driver); +} + +module_init(olpc_ec_init_module); + +MODULE_AUTHOR("Andres Salomon "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From d278b7a2f90f91f908b19b50cfa59e10632b5afc Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Fri, 13 Jul 2012 15:54:25 -0700 Subject: Platform: OLPC: add a suspended flag to the EC driver A problem we've noticed on XO-1.75 is when we suspend in the middle of an EC command. Don't allow that. In the process, create a private object for the generic EC driver to use; we have a framework for passing around a struct, use that rather than a proliferation of global variables. Signed-off-by: Andres Salomon Acked-by: Paul Fox Reviewed-by: Thomas Gleixner --- drivers/platform/olpc/olpc-ec.c | 46 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 45 insertions(+), 1 deletion(-) (limited to 'drivers/platform') diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c index d00523c65191..cfba41fb04de 100644 --- a/drivers/platform/olpc/olpc-ec.c +++ b/drivers/platform/olpc/olpc-ec.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -27,6 +28,21 @@ struct ec_cmd_desc { void *priv; }; +struct olpc_ec_priv { + struct olpc_ec_driver *drv; + + /* + * Running an EC command while suspending means we don't always finish + * the command before the machine suspends. This means that the EC + * is expecting the command protocol to finish, but we after a period + * of time (while the OS is asleep) the EC times out and restarts its + * idle loop. Meanwhile, the OS wakes up, thinks it's still in the + * middle of the command protocol, starts throwing random things at + * the EC... and everyone's uphappy. + */ + bool suspended; +}; + static void olpc_ec_worker(struct work_struct *w); static DECLARE_WORK(ec_worker, olpc_ec_worker); @@ -34,6 +50,7 @@ static LIST_HEAD(ec_cmd_q); static DEFINE_SPINLOCK(ec_cmd_q_lock); static struct olpc_ec_driver *ec_driver; +static struct olpc_ec_priv *ec_priv; static void *ec_cb_arg; static DEFINE_MUTEX(ec_cb_lock); @@ -93,6 +110,7 @@ static void queue_ec_descriptor(struct ec_cmd_desc *desc) int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) { + struct olpc_ec_priv *ec = ec_priv; struct ec_cmd_desc desc; /* XXX: this will be removed in later patches */ @@ -104,6 +122,13 @@ int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) if (WARN_ON(!ec_driver || !ec_driver->ec_cmd)) return -ENODEV; + if (!ec) + return -ENOMEM; + + /* Suspending in the middle of a command hoses things really badly */ + if (WARN_ON(ec->suspended)) + return -EBUSY; + might_sleep(); desc.cmd = cmd; @@ -126,11 +151,19 @@ EXPORT_SYMBOL_GPL(olpc_ec_cmd); static int olpc_ec_probe(struct platform_device *pdev) { + struct olpc_ec_priv *ec; int err; if (!ec_driver) return -ENODEV; + ec = kzalloc(sizeof(*ec), GFP_KERNEL); + if (!ec) + return -ENOMEM; + ec->drv = ec_driver; + ec_priv = ec; + platform_set_drvdata(pdev, ec); + err = ec_driver->probe ? ec_driver->probe(pdev) : 0; return err; @@ -139,12 +172,23 @@ static int olpc_ec_probe(struct platform_device *pdev) static int olpc_ec_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); - return ec_driver->suspend ? ec_driver->suspend(pdev) : 0; + struct olpc_ec_priv *ec = platform_get_drvdata(pdev); + int err = 0; + + if (ec_driver->suspend) + err = ec_driver->suspend(pdev); + if (!err) + ec->suspended = true; + + return err; } static int olpc_ec_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); + struct olpc_ec_priv *ec = platform_get_drvdata(pdev); + + ec->suspended = false; return ec_driver->resume ? ec_driver->resume(pdev) : 0; } -- cgit v1.2.3 From 85f90cf6ca569b19cee212844b543a7355b77163 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 12 Jul 2012 17:57:28 -0700 Subject: x86: OLPC: switch over to using new EC driver on x86 This uses the new EC driver framework in drivers/platform/olpc. The XO-1 and XO-1.5-specific code is still in arch/x86, but the generic stuff (including a new workqueue; no more running EC commands with IRQs disabled!) can be shared with other architectures. Signed-off-by: Andres Salomon Acked-by: Paul Fox Reviewed-by: Thomas Gleixner --- drivers/platform/olpc/olpc-ec.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c index cfba41fb04de..a3d32c2eeb1a 100644 --- a/drivers/platform/olpc/olpc-ec.c +++ b/drivers/platform/olpc/olpc-ec.c @@ -113,11 +113,6 @@ int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) struct olpc_ec_priv *ec = ec_priv; struct ec_cmd_desc desc; - /* XXX: this will be removed in later patches */ - /* Are we using old-style callers? */ - if (!ec_driver || !ec_driver->ec_cmd) - return olpc_ec_cmd_x86(cmd, inbuf, inlen, outbuf, outlen); - /* Ensure a driver and ec hook have been registered */ if (WARN_ON(!ec_driver || !ec_driver->ec_cmd)) return -ENODEV; -- cgit v1.2.3 From 6cca83d498bda0999302079bd59786370590c5c2 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 12 Jul 2012 20:45:14 -0700 Subject: Platform: OLPC: move debugfs support from x86 EC driver There's nothing about the debugfs interface for the EC driver that is architecture-specific, so move it into the arch-independent driver. The code is mostly unchanged with the exception of renamed variables, coding style changes, and API updates. Signed-off-by: Andres Salomon Acked-by: Paul Fox Reviewed-by: Thomas Gleixner --- drivers/platform/olpc/olpc-ec.c | 117 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 117 insertions(+) (limited to 'drivers/platform') diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c index a3d32c2eeb1a..1a15a79fff05 100644 --- a/drivers/platform/olpc/olpc-ec.c +++ b/drivers/platform/olpc/olpc-ec.c @@ -6,6 +6,7 @@ * Licensed under the GPL v2 or later. */ #include +#include #include #include #include @@ -31,6 +32,8 @@ struct ec_cmd_desc { struct olpc_ec_priv { struct olpc_ec_driver *drv; + struct dentry *dbgfs_dir; + /* * Running an EC command while suspending means we don't always finish * the command before the machine suspends. This means that the EC @@ -144,6 +147,114 @@ int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) } EXPORT_SYMBOL_GPL(olpc_ec_cmd); +#ifdef CONFIG_DEBUG_FS + +/* + * debugfs support for "generic commands", to allow sending + * arbitrary EC commands from userspace. + */ + +#define EC_MAX_CMD_ARGS (5 + 1) /* cmd byte + 5 args */ +#define EC_MAX_CMD_REPLY (8) + +static DEFINE_MUTEX(ec_dbgfs_lock); +static unsigned char ec_dbgfs_resp[EC_MAX_CMD_REPLY]; +static unsigned int ec_dbgfs_resp_bytes; + +static ssize_t ec_dbgfs_cmd_write(struct file *file, const char __user *buf, + size_t size, loff_t *ppos) +{ + int i, m; + unsigned char ec_cmd[EC_MAX_CMD_ARGS]; + unsigned int ec_cmd_int[EC_MAX_CMD_ARGS]; + char cmdbuf[64]; + int ec_cmd_bytes; + + mutex_lock(&ec_dbgfs_lock); + + size = simple_write_to_buffer(cmdbuf, sizeof(cmdbuf), ppos, buf, size); + + m = sscanf(cmdbuf, "%x:%u %x %x %x %x %x", &ec_cmd_int[0], + &ec_dbgfs_resp_bytes, &ec_cmd_int[1], &ec_cmd_int[2], + &ec_cmd_int[3], &ec_cmd_int[4], &ec_cmd_int[5]); + if (m < 2 || ec_dbgfs_resp_bytes > EC_MAX_CMD_REPLY) { + /* reset to prevent overflow on read */ + ec_dbgfs_resp_bytes = 0; + + pr_debug("olpc-ec: bad ec cmd: cmd:response-count [arg1 [arg2 ...]]\n"); + size = -EINVAL; + goto out; + } + + /* convert scanf'd ints to char */ + ec_cmd_bytes = m - 2; + for (i = 0; i <= ec_cmd_bytes; i++) + ec_cmd[i] = ec_cmd_int[i]; + + pr_debug("olpc-ec: debugfs cmd 0x%02x with %d args %02x %02x %02x %02x %02x, want %d returns\n", + ec_cmd[0], ec_cmd_bytes, ec_cmd[1], ec_cmd[2], + ec_cmd[3], ec_cmd[4], ec_cmd[5], ec_dbgfs_resp_bytes); + + olpc_ec_cmd(ec_cmd[0], (ec_cmd_bytes == 0) ? NULL : &ec_cmd[1], + ec_cmd_bytes, ec_dbgfs_resp, ec_dbgfs_resp_bytes); + + pr_debug("olpc-ec: response %02x %02x %02x %02x %02x %02x %02x %02x (%d bytes expected)\n", + ec_dbgfs_resp[0], ec_dbgfs_resp[1], ec_dbgfs_resp[2], + ec_dbgfs_resp[3], ec_dbgfs_resp[4], ec_dbgfs_resp[5], + ec_dbgfs_resp[6], ec_dbgfs_resp[7], + ec_dbgfs_resp_bytes); + +out: + mutex_unlock(&ec_dbgfs_lock); + return size; +} + +static ssize_t ec_dbgfs_cmd_read(struct file *file, char __user *buf, + size_t size, loff_t *ppos) +{ + unsigned int i, r; + char *rp; + char respbuf[64]; + + mutex_lock(&ec_dbgfs_lock); + rp = respbuf; + rp += sprintf(rp, "%02x", ec_dbgfs_resp[0]); + for (i = 1; i < ec_dbgfs_resp_bytes; i++) + rp += sprintf(rp, ", %02x", ec_dbgfs_resp[i]); + mutex_unlock(&ec_dbgfs_lock); + rp += sprintf(rp, "\n"); + + r = rp - respbuf; + return simple_read_from_buffer(buf, size, ppos, respbuf, r); +} + +static const struct file_operations ec_dbgfs_ops = { + .write = ec_dbgfs_cmd_write, + .read = ec_dbgfs_cmd_read, +}; + +static struct dentry *olpc_ec_setup_debugfs(void) +{ + struct dentry *dbgfs_dir; + + dbgfs_dir = debugfs_create_dir("olpc-ec", NULL); + if (IS_ERR_OR_NULL(dbgfs_dir)) + return NULL; + + debugfs_create_file("cmd", 0600, dbgfs_dir, NULL, &ec_dbgfs_ops); + + return dbgfs_dir; +} + +#else + +static struct dentry *olpc_ec_setup_debugfs(void) +{ + return NULL; +} + +#endif /* CONFIG_DEBUG_FS */ + static int olpc_ec_probe(struct platform_device *pdev) { struct olpc_ec_priv *ec; @@ -160,6 +271,12 @@ static int olpc_ec_probe(struct platform_device *pdev) platform_set_drvdata(pdev, ec); err = ec_driver->probe ? ec_driver->probe(pdev) : 0; + if (err) { + ec_priv = NULL; + kfree(ec); + } else { + ec->dbgfs_dir = olpc_ec_setup_debugfs(); + } return err; } -- cgit v1.2.3 From 99ecb01cdf0378783b317b8f839ac9cc5e128aa5 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Fri, 13 Jul 2012 17:10:45 -0700 Subject: Platform: OLPC: move global variables into priv struct Populate olpc_ec_priv with variables that were previously global. This makes things a tad bit clearer, IMO. Signed-off-by: Andres Salomon Acked-by: Paul Fox Reviewed-by: Thomas Gleixner --- drivers/platform/olpc/olpc-ec.c | 48 ++++++++++++++++++++++++----------------- 1 file changed, 28 insertions(+), 20 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c index 1a15a79fff05..0f9f8596b300 100644 --- a/drivers/platform/olpc/olpc-ec.c +++ b/drivers/platform/olpc/olpc-ec.c @@ -31,6 +31,12 @@ struct ec_cmd_desc { struct olpc_ec_priv { struct olpc_ec_driver *drv; + struct work_struct worker; + struct mutex cmd_lock; + + /* Pending EC commands */ + struct list_head cmd_q; + spinlock_t cmd_q_lock; struct dentry *dbgfs_dir; @@ -46,16 +52,9 @@ struct olpc_ec_priv { bool suspended; }; -static void olpc_ec_worker(struct work_struct *w); - -static DECLARE_WORK(ec_worker, olpc_ec_worker); -static LIST_HEAD(ec_cmd_q); -static DEFINE_SPINLOCK(ec_cmd_q_lock); - static struct olpc_ec_driver *ec_driver; static struct olpc_ec_priv *ec_priv; static void *ec_cb_arg; -static DEFINE_MUTEX(ec_cb_lock); void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg) { @@ -66,49 +65,51 @@ EXPORT_SYMBOL_GPL(olpc_ec_driver_register); static void olpc_ec_worker(struct work_struct *w) { + struct olpc_ec_priv *ec = container_of(w, struct olpc_ec_priv, worker); struct ec_cmd_desc *desc = NULL; unsigned long flags; /* Grab the first pending command from the queue */ - spin_lock_irqsave(&ec_cmd_q_lock, flags); - if (!list_empty(&ec_cmd_q)) { - desc = list_first_entry(&ec_cmd_q, struct ec_cmd_desc, node); + spin_lock_irqsave(&ec->cmd_q_lock, flags); + if (!list_empty(&ec->cmd_q)) { + desc = list_first_entry(&ec->cmd_q, struct ec_cmd_desc, node); list_del(&desc->node); } - spin_unlock_irqrestore(&ec_cmd_q_lock, flags); + spin_unlock_irqrestore(&ec->cmd_q_lock, flags); /* Do we actually have anything to do? */ if (!desc) return; /* Protect the EC hw with a mutex; only run one cmd at a time */ - mutex_lock(&ec_cb_lock); + mutex_lock(&ec->cmd_lock); desc->err = ec_driver->ec_cmd(desc->cmd, desc->inbuf, desc->inlen, desc->outbuf, desc->outlen, ec_cb_arg); - mutex_unlock(&ec_cb_lock); + mutex_unlock(&ec->cmd_lock); /* Finished, wake up olpc_ec_cmd() */ complete(&desc->finished); /* Run the worker thread again in case there are more cmds pending */ - schedule_work(&ec_worker); + schedule_work(&ec->worker); } /* * Throw a cmd descripter onto the list. We now have SMP OLPC machines, so * locking is pretty critical. */ -static void queue_ec_descriptor(struct ec_cmd_desc *desc) +static void queue_ec_descriptor(struct ec_cmd_desc *desc, + struct olpc_ec_priv *ec) { unsigned long flags; INIT_LIST_HEAD(&desc->node); - spin_lock_irqsave(&ec_cmd_q_lock, flags); - list_add_tail(&desc->node, &ec_cmd_q); - spin_unlock_irqrestore(&ec_cmd_q_lock, flags); + spin_lock_irqsave(&ec->cmd_q_lock, flags); + list_add_tail(&desc->node, &ec->cmd_q); + spin_unlock_irqrestore(&ec->cmd_q_lock, flags); - schedule_work(&ec_worker); + schedule_work(&ec->worker); } int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) @@ -137,7 +138,7 @@ int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) desc.err = 0; init_completion(&desc.finished); - queue_ec_descriptor(&desc); + queue_ec_descriptor(&desc, ec); /* Timeouts must be handled in the platform-specific EC hook */ wait_for_completion(&desc.finished); @@ -266,7 +267,14 @@ static int olpc_ec_probe(struct platform_device *pdev) ec = kzalloc(sizeof(*ec), GFP_KERNEL); if (!ec) return -ENOMEM; + ec->drv = ec_driver; + INIT_WORK(&ec->worker, olpc_ec_worker); + mutex_init(&ec->cmd_lock); + + INIT_LIST_HEAD(&ec->cmd_q); + spin_lock_init(&ec->cmd_q_lock); + ec_priv = ec; platform_set_drvdata(pdev, ec); -- cgit v1.2.3 From 3567a4e2c52ce2f6fe74fc85690335ec7c96608e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 9 Aug 2012 23:00:13 +0200 Subject: platform / x86 / PM: Fix unused function warnings for CONFIG_PM_SLEEP According to compiler warnings, quite some suspend/resume functions in platform x86 drivers are not used for CONFIG_PM_SLEEP unset, so add #ifdefs to prevent them from being built in that case. Signed-off-by: Rafael J. Wysocki --- drivers/platform/x86/classmate-laptop.c | 4 ++++ drivers/platform/x86/fujitsu-tablet.c | 2 ++ drivers/platform/x86/hdaps.c | 2 ++ drivers/platform/x86/hp_accel.c | 2 +- drivers/platform/x86/msi-laptop.c | 4 ++++ drivers/platform/x86/panasonic-laptop.c | 4 ++++ drivers/platform/x86/sony-laptop.c | 12 +++++++++++- drivers/platform/x86/thinkpad_acpi.c | 2 ++ drivers/platform/x86/toshiba_acpi.c | 2 ++ drivers/platform/x86/toshiba_bluetooth.c | 4 ++++ drivers/platform/x86/xo15-ebook.c | 2 ++ 11 files changed, 38 insertions(+), 2 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/classmate-laptop.c b/drivers/platform/x86/classmate-laptop.c index 2ca7dd1ab3e4..cd33add118ce 100644 --- a/drivers/platform/x86/classmate-laptop.c +++ b/drivers/platform/x86/classmate-laptop.c @@ -350,6 +350,7 @@ static void cmpc_accel_idev_init_v4(struct input_dev *inputdev) inputdev->close = cmpc_accel_close_v4; } +#ifdef CONFIG_PM_SLEEP static int cmpc_accel_suspend_v4(struct device *dev) { struct input_dev *inputdev; @@ -384,6 +385,7 @@ static int cmpc_accel_resume_v4(struct device *dev) return 0; } +#endif static int cmpc_accel_add_v4(struct acpi_device *acpi) { @@ -752,6 +754,7 @@ static int cmpc_tablet_remove(struct acpi_device *acpi, int type) return cmpc_remove_acpi_notify_device(acpi); } +#ifdef CONFIG_PM_SLEEP static int cmpc_tablet_resume(struct device *dev) { struct input_dev *inputdev = dev_get_drvdata(dev); @@ -761,6 +764,7 @@ static int cmpc_tablet_resume(struct device *dev) input_report_switch(inputdev, SW_TABLET_MODE, !val); return 0; } +#endif static SIMPLE_DEV_PM_OPS(cmpc_tablet_pm, NULL, cmpc_tablet_resume); diff --git a/drivers/platform/x86/fujitsu-tablet.c b/drivers/platform/x86/fujitsu-tablet.c index d2e41735a47b..7acae3f85f3b 100644 --- a/drivers/platform/x86/fujitsu-tablet.c +++ b/drivers/platform/x86/fujitsu-tablet.c @@ -440,11 +440,13 @@ static int __devexit acpi_fujitsu_remove(struct acpi_device *adev, int type) return 0; } +#ifdef CONFIG_PM_SLEEP static int acpi_fujitsu_resume(struct device *dev) { fujitsu_reset(); return 0; } +#endif static SIMPLE_DEV_PM_OPS(acpi_fujitsu_pm, NULL, acpi_fujitsu_resume); diff --git a/drivers/platform/x86/hdaps.c b/drivers/platform/x86/hdaps.c index d9ab6f64dcec..777c7e3dda51 100644 --- a/drivers/platform/x86/hdaps.c +++ b/drivers/platform/x86/hdaps.c @@ -305,10 +305,12 @@ static int hdaps_probe(struct platform_device *dev) return 0; } +#ifdef CONFIG_PM_SLEEP static int hdaps_resume(struct device *dev) { return hdaps_device_init(); } +#endif static SIMPLE_DEV_PM_OPS(hdaps_pm, NULL, hdaps_resume); diff --git a/drivers/platform/x86/hp_accel.c b/drivers/platform/x86/hp_accel.c index f4d91154ad67..6b9af989632b 100644 --- a/drivers/platform/x86/hp_accel.c +++ b/drivers/platform/x86/hp_accel.c @@ -352,7 +352,7 @@ static int lis3lv02d_remove(struct acpi_device *device, int type) } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP static int lis3lv02d_suspend(struct device *dev) { /* make sure the device is off when we suspend */ diff --git a/drivers/platform/x86/msi-laptop.c b/drivers/platform/x86/msi-laptop.c index f64441844317..2111dbb7e1e3 100644 --- a/drivers/platform/x86/msi-laptop.c +++ b/drivers/platform/x86/msi-laptop.c @@ -85,7 +85,9 @@ #define MSI_STANDARD_EC_TOUCHPAD_ADDRESS 0xe4 #define MSI_STANDARD_EC_TOUCHPAD_MASK (1 << 4) +#ifdef CONFIG_PM_SLEEP static int msi_laptop_resume(struct device *device); +#endif static SIMPLE_DEV_PM_OPS(msi_laptop_pm, NULL, msi_laptop_resume); #define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS 0x2f @@ -753,6 +755,7 @@ err_bluetooth: return retval; } +#ifdef CONFIG_PM_SLEEP static int msi_laptop_resume(struct device *device) { u8 data; @@ -773,6 +776,7 @@ static int msi_laptop_resume(struct device *device) return 0; } +#endif static int __init msi_laptop_input_setup(void) { diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c index 24480074bcf0..8e8caa767d6a 100644 --- a/drivers/platform/x86/panasonic-laptop.c +++ b/drivers/platform/x86/panasonic-laptop.c @@ -188,7 +188,9 @@ static const struct acpi_device_id pcc_device_ids[] = { }; MODULE_DEVICE_TABLE(acpi, pcc_device_ids); +#ifdef CONFIG_PM_SLEEP static int acpi_pcc_hotkey_resume(struct device *dev); +#endif static SIMPLE_DEV_PM_OPS(acpi_pcc_hotkey_pm, NULL, acpi_pcc_hotkey_resume); static struct acpi_driver acpi_pcc_driver = { @@ -540,6 +542,7 @@ static void acpi_pcc_destroy_input(struct pcc_acpi *pcc) /* kernel module interface */ +#ifdef CONFIG_PM_SLEEP static int acpi_pcc_hotkey_resume(struct device *dev) { struct pcc_acpi *pcc; @@ -556,6 +559,7 @@ static int acpi_pcc_hotkey_resume(struct device *dev) return acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_mode); } +#endif static int acpi_pcc_hotkey_add(struct acpi_device *device) { diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index 9363969ad07a..daaddec68def 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -140,7 +140,10 @@ MODULE_PARM_DESC(kbd_backlight_timeout, "1 for 30 seconds, 2 for 60 seconds and 3 to disable timeout " "(default: 0)"); +#ifdef CONFIG_PM_SLEEP static void sony_nc_kbd_backlight_resume(void); +static void sony_nc_thermal_resume(void); +#endif static int sony_nc_kbd_backlight_setup(struct platform_device *pd, unsigned int handle); static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd); @@ -151,7 +154,6 @@ static void sony_nc_battery_care_cleanup(struct platform_device *pd); static int sony_nc_thermal_setup(struct platform_device *pd); static void sony_nc_thermal_cleanup(struct platform_device *pd); -static void sony_nc_thermal_resume(void); static int sony_nc_lid_resume_setup(struct platform_device *pd); static void sony_nc_lid_resume_cleanup(struct platform_device *pd); @@ -1431,6 +1433,7 @@ static void sony_nc_function_cleanup(struct platform_device *pd) sony_nc_handles_cleanup(pd); } +#ifdef CONFIG_PM_SLEEP static void sony_nc_function_resume(void) { unsigned int i, result, bitmask, arg; @@ -1508,6 +1511,7 @@ static int sony_nc_resume(struct device *dev) return 0; } +#endif static SIMPLE_DEV_PM_OPS(sony_nc_pm, NULL, sony_nc_resume); @@ -1872,6 +1876,7 @@ static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd) } } +#ifdef CONFIG_PM_SLEEP static void sony_nc_kbd_backlight_resume(void) { int ignore = 0; @@ -1888,6 +1893,7 @@ static void sony_nc_kbd_backlight_resume(void) (kbdbl_ctl->base + 0x200) | (kbdbl_ctl->timeout << 0x10), &ignore); } +#endif struct battery_care_control { struct device_attribute attrs[2]; @@ -2210,6 +2216,7 @@ static void sony_nc_thermal_cleanup(struct platform_device *pd) } } +#ifdef CONFIG_PM_SLEEP static void sony_nc_thermal_resume(void) { unsigned int status = sony_nc_thermal_mode_get(); @@ -2217,6 +2224,7 @@ static void sony_nc_thermal_resume(void) if (status != th_handle->mode) sony_nc_thermal_mode_set(th_handle->mode); } +#endif /* resume on LID open */ struct snc_lid_resume_control { @@ -4287,6 +4295,7 @@ err_free_resources: return result; } +#ifdef CONFIG_PM_SLEEP static int sony_pic_suspend(struct device *dev) { if (sony_pic_disable(to_acpi_device(dev))) @@ -4300,6 +4309,7 @@ static int sony_pic_resume(struct device *dev) spic_dev.cur_ioport, spic_dev.cur_irq); return 0; } +#endif static SIMPLE_DEV_PM_OPS(sony_pic_pm, sony_pic_suspend, sony_pic_resume); diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index e7f73287636c..f28f36ccdcf4 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -922,6 +922,7 @@ static struct input_dev *tpacpi_inputdev; static struct mutex tpacpi_inputdev_send_mutex; static LIST_HEAD(tpacpi_all_drivers); +#ifdef CONFIG_PM_SLEEP static int tpacpi_suspend_handler(struct device *dev) { struct ibm_struct *ibm, *itmp; @@ -949,6 +950,7 @@ static int tpacpi_resume_handler(struct device *dev) return 0; } +#endif static SIMPLE_DEV_PM_OPS(tpacpi_pm, tpacpi_suspend_handler, tpacpi_resume_handler); diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index c13ba5bac93f..5f1256d5e933 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -1296,6 +1296,7 @@ static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event) } } +#ifdef CONFIG_PM_SLEEP static int toshiba_acpi_suspend(struct device *device) { struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device)); @@ -1317,6 +1318,7 @@ static int toshiba_acpi_resume(struct device *device) return 0; } +#endif static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm, toshiba_acpi_suspend, toshiba_acpi_resume); diff --git a/drivers/platform/x86/toshiba_bluetooth.c b/drivers/platform/x86/toshiba_bluetooth.c index 715a43cb5e3c..5e5d6317d690 100644 --- a/drivers/platform/x86/toshiba_bluetooth.c +++ b/drivers/platform/x86/toshiba_bluetooth.c @@ -41,7 +41,9 @@ static const struct acpi_device_id bt_device_ids[] = { }; MODULE_DEVICE_TABLE(acpi, bt_device_ids); +#ifdef CONFIG_PM_SLEEP static int toshiba_bt_resume(struct device *dev); +#endif static SIMPLE_DEV_PM_OPS(toshiba_bt_pm, NULL, toshiba_bt_resume); static struct acpi_driver toshiba_bt_rfkill_driver = { @@ -90,10 +92,12 @@ static void toshiba_bt_rfkill_notify(struct acpi_device *device, u32 event) toshiba_bluetooth_enable(device->handle); } +#ifdef CONFIG_PM_SLEEP static int toshiba_bt_resume(struct device *dev) { return toshiba_bluetooth_enable(to_acpi_device(dev)->handle); } +#endif static int toshiba_bt_rfkill_add(struct acpi_device *device) { diff --git a/drivers/platform/x86/xo15-ebook.c b/drivers/platform/x86/xo15-ebook.c index 849c07c13bf6..38ba39d7ca7d 100644 --- a/drivers/platform/x86/xo15-ebook.c +++ b/drivers/platform/x86/xo15-ebook.c @@ -77,10 +77,12 @@ static void ebook_switch_notify(struct acpi_device *device, u32 event) } } +#ifdef CONFIG_PM_SLEEP static int ebook_switch_resume(struct device *dev) { return ebook_send_state(to_acpi_device(dev)); } +#endif static SIMPLE_DEV_PM_OPS(ebook_switch_pm, NULL, ebook_switch_resume); -- cgit v1.2.3 From 7e30ed6bdd91ae73c34fc37b57fcccc8640641f9 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Thu, 9 Aug 2012 12:47:00 -0400 Subject: gmux: Add generic write32 function Move the special-cased backlight update function to a generic gmux_write32 function. Signed-off-by: Matthew Garrett Cc: Seth Forshee --- drivers/platform/x86/apple-gmux.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c index 905fa01ac8df..c9db50729f6f 100644 --- a/drivers/platform/x86/apple-gmux.c +++ b/drivers/platform/x86/apple-gmux.c @@ -75,6 +75,18 @@ static inline u32 gmux_read32(struct apple_gmux_data *gmux_data, int port) return inl(gmux_data->iostart + port); } +static inline u32 gmux_write32(struct apple_gmux_data *gmux_data, int port, + u32 val) +{ + int i; + u8 tmpval; + + for (i = 0; i < 4; i++) { + tmpval = (val >> (i * 8)) & 0xff; + outb(tmpval, port + i); + } +} + static int gmux_get_brightness(struct backlight_device *bd) { struct apple_gmux_data *gmux_data = bl_get_data(bd); @@ -90,16 +102,7 @@ static int gmux_update_status(struct backlight_device *bd) if (bd->props.state & BL_CORE_SUSPENDED) return 0; - /* - * Older gmux versions require writing out lower bytes first then - * setting the upper byte to 0 to flush the values. Newer versions - * accept a single u32 write, but the old method also works, so we - * just use the old method for all gmux versions. - */ - gmux_write8(gmux_data, GMUX_PORT_BRIGHTNESS, brightness); - gmux_write8(gmux_data, GMUX_PORT_BRIGHTNESS + 1, brightness >> 8); - gmux_write8(gmux_data, GMUX_PORT_BRIGHTNESS + 2, brightness >> 16); - gmux_write8(gmux_data, GMUX_PORT_BRIGHTNESS + 3, 0); + gmux_write32(gmux_data, GMUX_PORT_BRIGHTNESS, brightness); return 0; } -- cgit v1.2.3 From 96ff705638e3d61b1e45a047c0f9f3bb622fa32f Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Thu, 9 Aug 2012 13:45:01 -0400 Subject: apple_gmux: Add support for newer hardware New gmux devices have a different method for accessing the registers. Update the driver to cope. Incorporates feedback from Bernhard Froemel. Signed-off-by: Matthew Garrett Cc: Bernhard Froemel Cc: Seth Forshee --- drivers/platform/x86/apple-gmux.c | 179 +++++++++++++++++++++++++++++++++++--- 1 file changed, 165 insertions(+), 14 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c index c9db50729f6f..0d140e1879e7 100644 --- a/drivers/platform/x86/apple-gmux.c +++ b/drivers/platform/x86/apple-gmux.c @@ -18,12 +18,15 @@ #include #include #include +#include #include #include struct apple_gmux_data { unsigned long iostart; unsigned long iolen; + bool indexed; + struct mutex index_lock; struct backlight_device *bdev; }; @@ -45,6 +48,9 @@ struct apple_gmux_data { #define GMUX_PORT_DISCRETE_POWER 0x50 #define GMUX_PORT_MAX_BRIGHTNESS 0x70 #define GMUX_PORT_BRIGHTNESS 0x74 +#define GMUX_PORT_VALUE 0xc2 +#define GMUX_PORT_READ 0xd0 +#define GMUX_PORT_WRITE 0xd4 #define GMUX_MIN_IO_LEN (GMUX_PORT_BRIGHTNESS + 4) @@ -59,24 +65,24 @@ struct apple_gmux_data { #define GMUX_BRIGHTNESS_MASK 0x00ffffff #define GMUX_MAX_BRIGHTNESS GMUX_BRIGHTNESS_MASK -static inline u8 gmux_read8(struct apple_gmux_data *gmux_data, int port) +static u8 gmux_pio_read8(struct apple_gmux_data *gmux_data, int port) { return inb(gmux_data->iostart + port); } -static inline void gmux_write8(struct apple_gmux_data *gmux_data, int port, +static void gmux_pio_write8(struct apple_gmux_data *gmux_data, int port, u8 val) { outb(val, gmux_data->iostart + port); } -static inline u32 gmux_read32(struct apple_gmux_data *gmux_data, int port) +static u32 gmux_pio_read32(struct apple_gmux_data *gmux_data, int port) { return inl(gmux_data->iostart + port); } -static inline u32 gmux_write32(struct apple_gmux_data *gmux_data, int port, - u32 val) +static void gmux_pio_write32(struct apple_gmux_data *gmux_data, int port, + u32 val) { int i; u8 tmpval; @@ -87,6 +93,144 @@ static inline u32 gmux_write32(struct apple_gmux_data *gmux_data, int port, } } +static int gmux_index_wait_ready(struct apple_gmux_data *gmux_data) +{ + int i = 200; + u8 gwr = inb(gmux_data->iostart + GMUX_PORT_WRITE); + + while (i && (gwr & 0x01)) { + inb(gmux_data->iostart + GMUX_PORT_READ); + gwr = inb(gmux_data->iostart + GMUX_PORT_WRITE); + udelay(100); + i--; + } + + return !!i; +} + +static int gmux_index_wait_complete(struct apple_gmux_data *gmux_data) +{ + int i = 200; + u8 gwr = inb(gmux_data->iostart + GMUX_PORT_WRITE); + + while (i && !(gwr & 0x01)) { + gwr = inb(gmux_data->iostart + GMUX_PORT_WRITE); + udelay(100); + i--; + } + + if (gwr & 0x01) + inb(gmux_data->iostart + GMUX_PORT_READ); + + return !!i; +} + +static u8 gmux_index_read8(struct apple_gmux_data *gmux_data, int port) +{ + u8 val; + + mutex_lock(&gmux_data->index_lock); + outb((port & 0xff), gmux_data->iostart + GMUX_PORT_READ); + gmux_index_wait_ready(gmux_data); + val = inb(gmux_data->iostart + GMUX_PORT_VALUE); + mutex_unlock(&gmux_data->index_lock); + + return val; +} + +static void gmux_index_write8(struct apple_gmux_data *gmux_data, int port, + u8 val) +{ + mutex_lock(&gmux_data->index_lock); + outb(val, gmux_data->iostart + GMUX_PORT_VALUE); + gmux_index_wait_ready(gmux_data); + outb(port & 0xff, gmux_data->iostart + GMUX_PORT_WRITE); + gmux_index_wait_complete(gmux_data); + mutex_unlock(&gmux_data->index_lock); +} + +static u32 gmux_index_read32(struct apple_gmux_data *gmux_data, int port) +{ + u32 val; + + mutex_lock(&gmux_data->index_lock); + outb((port & 0xff), gmux_data->iostart + GMUX_PORT_READ); + gmux_index_wait_ready(gmux_data); + val = inl(gmux_data->iostart + GMUX_PORT_VALUE); + mutex_unlock(&gmux_data->index_lock); + + return val; +} + +static void gmux_index_write32(struct apple_gmux_data *gmux_data, int port, + u32 val) +{ + int i; + u8 tmpval; + + mutex_lock(&gmux_data->index_lock); + + for (i = 0; i < 4; i++) { + tmpval = (val >> (i * 8)) & 0xff; + outb(tmpval, gmux_data->iostart + GMUX_PORT_VALUE + i); + } + + gmux_index_wait_ready(gmux_data); + outb(port & 0xff, gmux_data->iostart + GMUX_PORT_WRITE); + gmux_index_wait_complete(gmux_data); + mutex_unlock(&gmux_data->index_lock); +} + +static u8 gmux_read8(struct apple_gmux_data *gmux_data, int port) +{ + if (gmux_data->indexed) + return gmux_index_read8(gmux_data, port); + else + return gmux_pio_read8(gmux_data, port); +} + +static void gmux_write8(struct apple_gmux_data *gmux_data, int port, u8 val) +{ + if (gmux_data->indexed) + gmux_index_write8(gmux_data, port, val); + else + gmux_pio_write8(gmux_data, port, val); +} + +static u32 gmux_read32(struct apple_gmux_data *gmux_data, int port) +{ + if (gmux_data->indexed) + return gmux_index_read32(gmux_data, port); + else + return gmux_pio_read32(gmux_data, port); +} + +static void gmux_write32(struct apple_gmux_data *gmux_data, int port, + u32 val) +{ + if (gmux_data->indexed) + gmux_index_write32(gmux_data, port, val); + else + gmux_pio_write32(gmux_data, port, val); +} + +static bool gmux_is_indexed(struct apple_gmux_data *gmux_data) +{ + u16 val; + + outb(0xaa, gmux_data->iostart + 0xcc); + outb(0x55, gmux_data->iostart + 0xcd); + outb(0x00, gmux_data->iostart + 0xce); + + val = inb(gmux_data->iostart + 0xcc) | + (inb(gmux_data->iostart + 0xcd) << 8); + + if (val == 0x55aa) + return true; + + return false; +} + static int gmux_get_brightness(struct backlight_device *bd) { struct apple_gmux_data *gmux_data = bl_get_data(bd); @@ -150,22 +294,29 @@ static int __devinit gmux_probe(struct pnp_dev *pnp, } /* - * On some machines the gmux is in ACPI even thought the machine - * doesn't really have a gmux. Check for invalid version information - * to detect this. + * Invalid version information may indicate either that the gmux + * device isn't present or that it's a new one that uses indexed + * io */ + ver_major = gmux_read8(gmux_data, GMUX_PORT_VERSION_MAJOR); ver_minor = gmux_read8(gmux_data, GMUX_PORT_VERSION_MINOR); ver_release = gmux_read8(gmux_data, GMUX_PORT_VERSION_RELEASE); if (ver_major == 0xff && ver_minor == 0xff && ver_release == 0xff) { - pr_info("gmux device not present\n"); - ret = -ENODEV; - goto err_release; + if (gmux_is_indexed(gmux_data)) { + mutex_init(&gmux_data->index_lock); + gmux_data->indexed = true; + } else { + pr_info("gmux device not present\n"); + ret = -ENODEV; + goto err_release; + } + pr_info("Found indexed gmux\n"); + } else { + pr_info("Found gmux version %d.%d.%d\n", ver_major, ver_minor, + ver_release); } - pr_info("Found gmux version %d.%d.%d\n", ver_major, ver_minor, - ver_release); - memset(&props, 0, sizeof(props)); props.type = BACKLIGHT_PLATFORM; props.max_brightness = gmux_read32(gmux_data, GMUX_PORT_MAX_BRIGHTNESS); -- cgit v1.2.3 From 9f6f955ae4994dd4ad5513a0d959468763a45fa5 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Fri, 17 Aug 2012 16:57:20 -0400 Subject: apple_gmux: Fix ACPI video unregister We were only calling acpi_video_unregister() if ACPI video support was built in, not if it was a module. Signed-off-by: Matthew Garrett --- drivers/platform/x86/apple-gmux.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c index 0d140e1879e7..85e1bfbd1121 100644 --- a/drivers/platform/x86/apple-gmux.c +++ b/drivers/platform/x86/apple-gmux.c @@ -348,7 +348,7 @@ static int __devinit gmux_probe(struct pnp_dev *pnp, * Disable the other backlight choices. */ acpi_video_dmi_promote_vendor(); -#ifdef CONFIG_ACPI_VIDEO +#if defined (CONFIG_ACPI_VIDEO) || defined (CONFIG_ACPI_VIDEO_MODULE) acpi_video_unregister(); #endif apple_bl_unregister(); @@ -371,7 +371,7 @@ static void __devexit gmux_remove(struct pnp_dev *pnp) kfree(gmux_data); acpi_video_dmi_demote_vendor(); -#ifdef CONFIG_ACPI_VIDEO +#if defined (CONFIG_ACPI_VIDEO) || defined (CONFIG_ACPI_VIDEO_MODULE) acpi_video_register(); #endif apple_bl_register(); -- cgit v1.2.3 From a50bd128f28cf81c1250874fc53728e113f12957 Mon Sep 17 00:00:00 2001 From: AceLan Kao Date: Thu, 26 Jul 2012 17:13:31 +0800 Subject: asus-wmi: record wlan status while controlled by userapp MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If the user bit is set, that mean BIOS can't set and record the wlan status, it will report the value read from id ASUS_WMI_DEVID_WLAN_LED (0x00010012) while we query the wlan status by id ASUS_WMI_DEVID_WLAN (0x00010011) through WMI. So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED (0x00010012) while setting the wlan status through WMI. This is also the behavior that windows app will do. Quote from ASUS application engineer === When you call WMIMethod(DSTS, 0x00010011) to get WLAN status, it may return (1) 0x00050001 (On) (2) 0x00050000 (Off) (3) 0x00030001 (On) (4) 0x00030000 (Off) (5) 0x00000002 (Unknown) (1), (2) means that the model has hardware GPIO for WLAN, you can call WMIMethod(DEVS, 0x00010011, 1 or 0) to turn WLAN on/off. (3), (4) means that the model doesn’t have hardware GPIO, you need to use API or driver library to turn WLAN on/off, and call WMIMethod(DEVS, 0x00010012, 1 or 0) to set WLAN LED status. After you set WLAN LED status, you can see the WLAN status is changed with WMIMethod(DSTS, 0x00010011). Because the status is recorded lastly (ex: Windows), you can use it for synchronization. (5) means that the model doesn’t have WLAN device. WLAN is the ONLY special case with upper rule. For other device, like Bluetooth, you just need use WMIMethod(DSTS, 0x00010013) to get, and WMIMethod(DEVS, 0x00010013, 1 or 0) to set. === Signed-off-by: AceLan Kao Signed-off-by: Matthew Garrett --- drivers/platform/x86/asus-wmi.c | 21 ++++++++++++++++++++- drivers/platform/x86/asus-wmi.h | 1 + 2 files changed, 21 insertions(+), 1 deletion(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index c7a36f6b0580..2eb9fe8e8efd 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -101,6 +101,7 @@ MODULE_LICENSE("GPL"); #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002 #define ASUS_WMI_DEVID_CWAP 0x00010003 #define ASUS_WMI_DEVID_WLAN 0x00010011 +#define ASUS_WMI_DEVID_WLAN_LED 0x00010012 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013 #define ASUS_WMI_DEVID_GPS 0x00010015 #define ASUS_WMI_DEVID_WIMAX 0x00010017 @@ -731,8 +732,21 @@ static int asus_rfkill_set(void *data, bool blocked) { struct asus_rfkill *priv = data; u32 ctrl_param = !blocked; + u32 dev_id = priv->dev_id; - return asus_wmi_set_devstate(priv->dev_id, ctrl_param, NULL); + /* + * If the user bit is set, BIOS can't set and record the wlan status, + * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED + * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). + * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED + * while setting the wlan status through WMI. + * This is also the behavior that windows app will do. + */ + if ((dev_id == ASUS_WMI_DEVID_WLAN) && + priv->asus->driver->wlan_ctrl_by_user) + dev_id = ASUS_WMI_DEVID_WLAN_LED; + + return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); } static void asus_rfkill_query(struct rfkill *rfkill, void *data) @@ -1653,6 +1667,7 @@ static int asus_wmi_add(struct platform_device *pdev) struct asus_wmi *asus; acpi_status status; int err; + u32 result; asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); if (!asus) @@ -1711,6 +1726,10 @@ static int asus_wmi_add(struct platform_device *pdev) if (err) goto fail_debugfs; + asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); + if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) + asus->driver->wlan_ctrl_by_user = 1; + return 0; fail_debugfs: diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h index 9c1da8b81bea..4c9bd38bb0a2 100644 --- a/drivers/platform/x86/asus-wmi.h +++ b/drivers/platform/x86/asus-wmi.h @@ -46,6 +46,7 @@ struct quirk_entry { struct asus_wmi_driver { int brightness; int panel_power; + int wlan_ctrl_by_user; const char *name; struct module *owner; -- cgit v1.2.3 From f94f0f103c440f1dbe5d89a28c92fd1a9bdf7012 Mon Sep 17 00:00:00 2001 From: Seth Forshee Date: Thu, 2 Aug 2012 12:15:14 -0500 Subject: apple-gmux: Fix kconfig dependencies Fix the dependencies of apple-gmux to prevent it from being built-in when one or more of its dependencies is built as a module. Otherwise it can fail to build due to missing symbols. v2: Add dependency on ACPI to fix build failure when ACPI=n Reported-by: Arun Raghavan Signed-off-by: Seth Forshee Signed-off-by: Matthew Garrett --- drivers/platform/x86/Kconfig | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 2a262f5c5c0c..637074d89790 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -758,8 +758,11 @@ config SAMSUNG_Q10 config APPLE_GMUX tristate "Apple Gmux Driver" + depends on ACPI depends on PNP - select BACKLIGHT_CLASS_DEVICE + depends on BACKLIGHT_CLASS_DEVICE + depends on BACKLIGHT_APPLE=n || BACKLIGHT_APPLE + depends on ACPI_VIDEO=n || ACPI_VIDEO ---help--- This driver provides support for the gmux device found on many Apple laptops, which controls the display mux for the hybrid -- cgit v1.2.3 From 76b487dd5187a4d7cc6eccd452f65467a8c7768b Mon Sep 17 00:00:00 2001 From: Andreas Heider Date: Fri, 17 Aug 2012 11:17:04 -0500 Subject: apple-gmux: Add display mux support Add support for the gmux display muxing functionality and register a mux handler with vga_switcheroo. Signed-off-by: Andreas Heider Signed-off-by: Seth Forshee Signed-off-by: Matthew Garrett --- drivers/platform/x86/apple-gmux.c | 224 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 224 insertions(+) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c index 85e1bfbd1121..dfb1a92ce949 100644 --- a/drivers/platform/x86/apple-gmux.c +++ b/drivers/platform/x86/apple-gmux.c @@ -2,6 +2,7 @@ * Gmux driver for Apple laptops * * Copyright (C) Canonical Ltd. + * Copyright (C) 2010-2012 Andreas Heider * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -19,6 +20,8 @@ #include #include #include +#include +#include #include #include @@ -29,8 +32,17 @@ struct apple_gmux_data { struct mutex index_lock; struct backlight_device *bdev; + + /* switcheroo data */ + acpi_handle dhandle; + int gpe; + enum vga_switcheroo_client_id resume_client_id; + enum vga_switcheroo_state power_state; + struct completion powerchange_done; }; +static struct apple_gmux_data *apple_gmux_data; + /* * gmux port offsets. Many of these are not yet used, but may be in the * future, and it's useful to have them documented here anyhow. @@ -257,6 +269,146 @@ static const struct backlight_ops gmux_bl_ops = { .update_status = gmux_update_status, }; +static int gmux_switchto(enum vga_switcheroo_client_id id) +{ + if (id == VGA_SWITCHEROO_IGD) { + gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DDC, 1); + gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DISPLAY, 2); + gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_EXTERNAL, 2); + } else { + gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DDC, 2); + gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DISPLAY, 3); + gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_EXTERNAL, 3); + } + + return 0; +} + +static int gmux_set_discrete_state(struct apple_gmux_data *gmux_data, + enum vga_switcheroo_state state) +{ + INIT_COMPLETION(gmux_data->powerchange_done); + + if (state == VGA_SWITCHEROO_ON) { + gmux_write8(gmux_data, GMUX_PORT_DISCRETE_POWER, 1); + gmux_write8(gmux_data, GMUX_PORT_DISCRETE_POWER, 3); + pr_debug("Discrete card powered up\n"); + } else { + gmux_write8(gmux_data, GMUX_PORT_DISCRETE_POWER, 1); + gmux_write8(gmux_data, GMUX_PORT_DISCRETE_POWER, 0); + pr_debug("Discrete card powered down\n"); + } + + gmux_data->power_state = state; + + if (gmux_data->gpe >= 0 && + !wait_for_completion_interruptible_timeout(&gmux_data->powerchange_done, + msecs_to_jiffies(200))) + pr_warn("Timeout waiting for gmux switch to complete\n"); + + return 0; +} + +static int gmux_set_power_state(enum vga_switcheroo_client_id id, + enum vga_switcheroo_state state) +{ + if (id == VGA_SWITCHEROO_IGD) + return 0; + + return gmux_set_discrete_state(apple_gmux_data, state); +} + +static int gmux_get_client_id(struct pci_dev *pdev) +{ + /* + * Early Macbook Pros with switchable graphics use nvidia + * integrated graphics. Hardcode that the 9400M is integrated. + */ + if (pdev->vendor == PCI_VENDOR_ID_INTEL) + return VGA_SWITCHEROO_IGD; + else if (pdev->vendor == PCI_VENDOR_ID_NVIDIA && + pdev->device == 0x0863) + return VGA_SWITCHEROO_IGD; + else + return VGA_SWITCHEROO_DIS; +} + +static enum vga_switcheroo_client_id +gmux_active_client(struct apple_gmux_data *gmux_data) +{ + if (gmux_read8(gmux_data, GMUX_PORT_SWITCH_DISPLAY) == 2) + return VGA_SWITCHEROO_IGD; + + return VGA_SWITCHEROO_DIS; +} + +static struct vga_switcheroo_handler gmux_handler = { + .switchto = gmux_switchto, + .power_state = gmux_set_power_state, + .get_client_id = gmux_get_client_id, +}; + +static inline void gmux_disable_interrupts(struct apple_gmux_data *gmux_data) +{ + gmux_write8(gmux_data, GMUX_PORT_INTERRUPT_ENABLE, + GMUX_INTERRUPT_DISABLE); +} + +static inline void gmux_enable_interrupts(struct apple_gmux_data *gmux_data) +{ + gmux_write8(gmux_data, GMUX_PORT_INTERRUPT_ENABLE, + GMUX_INTERRUPT_ENABLE); +} + +static inline u8 gmux_interrupt_get_status(struct apple_gmux_data *gmux_data) +{ + return gmux_read8(gmux_data, GMUX_PORT_INTERRUPT_STATUS); +} + +static void gmux_clear_interrupts(struct apple_gmux_data *gmux_data) +{ + u8 status; + + /* to clear interrupts write back current status */ + status = gmux_interrupt_get_status(gmux_data); + gmux_write8(gmux_data, GMUX_PORT_INTERRUPT_STATUS, status); +} + +static void gmux_notify_handler(acpi_handle device, u32 value, void *context) +{ + u8 status; + struct pnp_dev *pnp = (struct pnp_dev *)context; + struct apple_gmux_data *gmux_data = pnp_get_drvdata(pnp); + + status = gmux_interrupt_get_status(gmux_data); + gmux_disable_interrupts(gmux_data); + pr_debug("Notify handler called: status %d\n", status); + + gmux_clear_interrupts(gmux_data); + gmux_enable_interrupts(gmux_data); + + if (status & GMUX_INTERRUPT_STATUS_POWER) + complete(&gmux_data->powerchange_done); +} + +static int gmux_suspend(struct pnp_dev *pnp, pm_message_t state) +{ + struct apple_gmux_data *gmux_data = pnp_get_drvdata(pnp); + gmux_data->resume_client_id = gmux_active_client(gmux_data); + gmux_disable_interrupts(gmux_data); + return 0; +} + +static int gmux_resume(struct pnp_dev *pnp) +{ + struct apple_gmux_data *gmux_data = pnp_get_drvdata(pnp); + gmux_enable_interrupts(gmux_data); + gmux_switchto(gmux_data->resume_client_id); + if (gmux_data->power_state == VGA_SWITCHEROO_OFF) + gmux_set_discrete_state(gmux_data, gmux_data->power_state); + return 0; +} + static int __devinit gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id) { @@ -266,6 +418,11 @@ static int __devinit gmux_probe(struct pnp_dev *pnp, struct backlight_device *bdev; u8 ver_major, ver_minor, ver_release; int ret = -ENXIO; + acpi_status status; + unsigned long long gpe; + + if (apple_gmux_data) + return -EBUSY; gmux_data = kzalloc(sizeof(*gmux_data), GFP_KERNEL); if (!gmux_data) @@ -353,8 +510,62 @@ static int __devinit gmux_probe(struct pnp_dev *pnp, #endif apple_bl_unregister(); + gmux_data->power_state = VGA_SWITCHEROO_ON; + + gmux_data->dhandle = DEVICE_ACPI_HANDLE(&pnp->dev); + if (!gmux_data->dhandle) { + pr_err("Cannot find acpi handle for pnp device %s\n", + dev_name(&pnp->dev)); + ret = -ENODEV; + goto err_notify; + } + + status = acpi_evaluate_integer(gmux_data->dhandle, "GMGP", NULL, &gpe); + if (ACPI_SUCCESS(status)) { + gmux_data->gpe = (int)gpe; + + status = acpi_install_notify_handler(gmux_data->dhandle, + ACPI_DEVICE_NOTIFY, + &gmux_notify_handler, pnp); + if (ACPI_FAILURE(status)) { + pr_err("Install notify handler failed: %s\n", + acpi_format_exception(status)); + ret = -ENODEV; + goto err_notify; + } + + status = acpi_enable_gpe(NULL, gmux_data->gpe); + if (ACPI_FAILURE(status)) { + pr_err("Cannot enable gpe: %s\n", + acpi_format_exception(status)); + goto err_enable_gpe; + } + } else { + pr_warn("No GPE found for gmux\n"); + gmux_data->gpe = -1; + } + + if (vga_switcheroo_register_handler(&gmux_handler)) { + ret = -ENODEV; + goto err_register_handler; + } + + init_completion(&gmux_data->powerchange_done); + apple_gmux_data = gmux_data; + gmux_enable_interrupts(gmux_data); + return 0; +err_register_handler: + if (gmux_data->gpe >= 0) + acpi_disable_gpe(NULL, gmux_data->gpe); +err_enable_gpe: + if (gmux_data->gpe >= 0) + acpi_remove_notify_handler(gmux_data->dhandle, + ACPI_DEVICE_NOTIFY, + &gmux_notify_handler); +err_notify: + backlight_device_unregister(bdev); err_release: release_region(gmux_data->iostart, gmux_data->iolen); err_free: @@ -366,8 +577,19 @@ static void __devexit gmux_remove(struct pnp_dev *pnp) { struct apple_gmux_data *gmux_data = pnp_get_drvdata(pnp); + vga_switcheroo_unregister_handler(); + gmux_disable_interrupts(gmux_data); + if (gmux_data->gpe >= 0) { + acpi_disable_gpe(NULL, gmux_data->gpe); + acpi_remove_notify_handler(gmux_data->dhandle, + ACPI_DEVICE_NOTIFY, + &gmux_notify_handler); + } + backlight_device_unregister(gmux_data->bdev); + release_region(gmux_data->iostart, gmux_data->iolen); + apple_gmux_data = NULL; kfree(gmux_data); acpi_video_dmi_demote_vendor(); @@ -387,6 +609,8 @@ static struct pnp_driver gmux_pnp_driver = { .probe = gmux_probe, .remove = __devexit_p(gmux_remove), .id_table = gmux_device_ids, + .suspend = gmux_suspend, + .resume = gmux_resume }; static int __init apple_gmux_init(void) -- cgit v1.2.3 From a2174ba29a3026d50aa0b59297821ea9cccd75cc Mon Sep 17 00:00:00 2001 From: AceLan Kao Date: Mon, 6 Aug 2012 09:48:58 +0800 Subject: dell-laptop: Fixed typo in touchpad LED quirk Fixed the typo introduced from the below commit 5f1e88f dell-laptop: Add 6 machines to touchpad led quirk Reported-by: Carlos Alberto Lopez Perez Signed-off-by: AceLan Kao Signed-off-by: Matthew Garrett --- drivers/platform/x86/dell-laptop.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index 4e96e8c0b60f..927c33af67ec 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -211,7 +211,7 @@ static struct dmi_system_id __devinitdata dell_quirks[] = { .ident = "Dell Inspiron 5420", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Isnpiron 5420"), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5420"), }, .driver_data = &quirk_dell_vostro_v130, }, @@ -220,7 +220,7 @@ static struct dmi_system_id __devinitdata dell_quirks[] = { .ident = "Dell Inspiron 5520", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Isnpiron 5520"), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5520"), }, .driver_data = &quirk_dell_vostro_v130, }, @@ -229,7 +229,7 @@ static struct dmi_system_id __devinitdata dell_quirks[] = { .ident = "Dell Inspiron 5720", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Isnpiron 5720"), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5720"), }, .driver_data = &quirk_dell_vostro_v130, }, @@ -238,7 +238,7 @@ static struct dmi_system_id __devinitdata dell_quirks[] = { .ident = "Dell Inspiron 7420", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Isnpiron 7420"), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7420"), }, .driver_data = &quirk_dell_vostro_v130, }, @@ -247,7 +247,7 @@ static struct dmi_system_id __devinitdata dell_quirks[] = { .ident = "Dell Inspiron 7520", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Isnpiron 7520"), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7520"), }, .driver_data = &quirk_dell_vostro_v130, }, @@ -256,7 +256,7 @@ static struct dmi_system_id __devinitdata dell_quirks[] = { .ident = "Dell Inspiron 7720", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Isnpiron 7720"), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), }, .driver_data = &quirk_dell_vostro_v130, }, -- cgit v1.2.3 From a4f46bb9fa84642e356898ee44b670989622f8bb Mon Sep 17 00:00:00 2001 From: Manoj Iyer Date: Mon, 6 Aug 2012 18:15:37 -0500 Subject: thinkpad-acpi: recognize latest V-Series using DMI_BIOS_VENDOR In the latest V-series bios DMI_PRODUCT_VERSION does not contain the string Lenovo or Thinkpad, but is set to the model number, this causes the thinkpad_acpi module to fail to load. Recognize laptop as Lenovo using DMI_BIOS_VENDOR instead, which is set to Lenovo. Test on V490u ============= == After the patch == [ 1350.295757] thinkpad_acpi: ThinkPad ACPI Extras v0.24 [ 1350.295760] thinkpad_acpi: http://ibm-acpi.sf.net/ [ 1350.295761] thinkpad_acpi: ThinkPad BIOS H7ET21WW (1.00 ), EC unknown [ 1350.295763] thinkpad_acpi: Lenovo LENOVO, model LV5DXXX [ 1350.296086] thinkpad_acpi: detected a 8-level brightness capable ThinkPad [ 1350.296694] thinkpad_acpi: radio switch found; radios are enabled [ 1350.296703] thinkpad_acpi: possible tablet mode switch found; ThinkPad in laptop mode [ 1350.306466] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked [ 1350.307082] Registered led device: tpacpi::thinklight [ 1350.307215] Registered led device: tpacpi::power [ 1350.307255] Registered led device: tpacpi::standby [ 1350.307294] Registered led device: tpacpi::thinkvantage [ 1350.308160] thinkpad_acpi: Standard ACPI backlight interface available, not loading native one [ 1350.308333] thinkpad_acpi: Console audio control enabled, mode: monitor (read only) [ 1350.312287] input: ThinkPad Extra Buttons as /devices/platform/thinkpad_acpi/input/input14 == Before the patch == sudo modprobe thinkpad_acpi FATAL: Error inserting thinkpad_acpi (/lib/modules/3.2.0-27-generic/kernel/drivers/platform/x86/thinkpad_acpi.ko): No such device Test on B485 ============= This patch was also test in a B485 where the thinkpad_acpi module does not have any issues loading. But, I tested it to make sure this patch does not break on already functioning models of Lenovo products. [13486.746359] thinkpad_acpi: ThinkPad ACPI Extras v0.24 [13486.746364] thinkpad_acpi: http://ibm-acpi.sf.net/ [13486.746368] thinkpad_acpi: ThinkPad BIOS HJET15WW(1.01), EC unknown [13486.746373] thinkpad_acpi: Lenovo Lenovo LB485, model 814TR01 [13486.747300] thinkpad_acpi: detected a 8-level brightness capable ThinkPad [13486.752435] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked [13486.752883] Registered led device: tpacpi::thinklight [13486.752915] thinkpad_acpi: Standard ACPI backlight interface available, not loading native one [13486.753216] thinkpad_acpi: Console audio control enabled, mode: monitor (read only) [13486.757147] input: ThinkPad Extra Buttons as /devices/platform/thinkpad_acpi/input/input15 Signed-off-by: Manoj Iyer Signed-off-by: Matthew Garrett --- drivers/platform/x86/thinkpad_acpi.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index f28f36ccdcf4..80e377949314 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -8664,6 +8664,13 @@ static int __must_check __init get_thinkpad_model_data( tp->model_str = kstrdup(s, GFP_KERNEL); if (!tp->model_str) return -ENOMEM; + } else { + s = dmi_get_system_info(DMI_BIOS_VENDOR); + if (s && !(strnicmp(s, "Lenovo", 6))) { + tp->model_str = kstrdup(s, GFP_KERNEL); + if (!tp->model_str) + return -ENOMEM; + } } s = dmi_get_system_info(DMI_PRODUCT_NAME); -- cgit v1.2.3 From ad20c73b05ea40cfdb42758506fb6b6befa3c9e5 Mon Sep 17 00:00:00 2001 From: Carlos Alberto Lopez Perez Date: Thu, 2 Aug 2012 19:50:21 +0200 Subject: classmate-laptop: always call input_sync() after input_report_switch() Due to commit cdda911c34006f1089f3c87b1a1f31ab3a4722f2 evdev only becomes readable when the buffer contains an EV_SYN/SYN_REPORT event. So in order to read the tablet sensor data as it happens we need to ensure that we always call input_sync() after input_report_switch() Signed-off-by: Carlos Alberto Lopez Perez Signed-off-by: Matthew Garrett --- drivers/platform/x86/classmate-laptop.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/classmate-laptop.c b/drivers/platform/x86/classmate-laptop.c index cd33add118ce..c87ff16873f9 100644 --- a/drivers/platform/x86/classmate-laptop.c +++ b/drivers/platform/x86/classmate-laptop.c @@ -725,8 +725,10 @@ static void cmpc_tablet_handler(struct acpi_device *dev, u32 event) struct input_dev *inputdev = dev_get_drvdata(&dev->dev); if (event == 0x81) { - if (ACPI_SUCCESS(cmpc_get_tablet(dev->handle, &val))) + if (ACPI_SUCCESS(cmpc_get_tablet(dev->handle, &val))) { input_report_switch(inputdev, SW_TABLET_MODE, !val); + input_sync(inputdev); + } } } @@ -739,8 +741,10 @@ static void cmpc_tablet_idev_init(struct input_dev *inputdev) set_bit(SW_TABLET_MODE, inputdev->swbit); acpi = to_acpi_device(inputdev->dev.parent); - if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val))) + if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val))) { input_report_switch(inputdev, SW_TABLET_MODE, !val); + input_sync(inputdev); + } } static int cmpc_tablet_add(struct acpi_device *acpi) @@ -760,8 +764,10 @@ static int cmpc_tablet_resume(struct device *dev) struct input_dev *inputdev = dev_get_drvdata(dev); unsigned long long val = 0; - if (ACPI_SUCCESS(cmpc_get_tablet(to_acpi_device(dev)->handle, &val))) + if (ACPI_SUCCESS(cmpc_get_tablet(to_acpi_device(dev)->handle, &val))) { input_report_switch(inputdev, SW_TABLET_MODE, !val); + input_sync(inputdev); + } return 0; } #endif -- cgit v1.2.3 From 296f9fe05d916e3d791dcd166aa41c1dadca4735 Mon Sep 17 00:00:00 2001 From: Maxim Mikityanskiy Date: Fri, 6 Jul 2012 16:07:50 +0800 Subject: ideapad: add Lenovo IdeaPad Z570 support (part 1) The patch adds support for Lenovo IdeaPad Z570 laptop. It makes all special keys working, adds possibility to control fan like Windows does, controls Touchpad Disabled LED, toggles touchpad state via keyboard controller and corrects touchpad behavior on resume from suspend. It is new, modified version of patch. Now it does not depend on psmouse and does not need patching of input subsystem. Signed-off-by: Maxim Mikityanskiy This is part 1 for special button handling. Signed-off-by: Ike Panhc Signed-off-by: Matthew Garrett --- drivers/platform/x86/ideapad-laptop.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index 17f6dfd8dbfb..2396242e8418 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -65,6 +65,7 @@ enum { VPCCMD_R_ODD, /* 0x21 */ VPCCMD_R_RF = 0x23, VPCCMD_W_RF, + VPCCMD_R_SPECIAL_BUTTONS = 0x31, VPCCMD_W_BL_POWER = 0x33, }; @@ -518,9 +519,13 @@ static void ideapad_platform_exit(struct ideapad_private *priv) */ static const struct key_entry ideapad_keymap[] = { { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } }, + { KE_KEY, 7, { KEY_CAMERA } }, + { KE_KEY, 11, { KEY_F16 } }, { KE_KEY, 13, { KEY_WLAN } }, { KE_KEY, 16, { KEY_PROG1 } }, { KE_KEY, 17, { KEY_PROG2 } }, + { KE_KEY, 64, { KEY_PROG3 } }, + { KE_KEY, 65, { KEY_PROG4 } }, { KE_END, 0 }, }; @@ -587,6 +592,28 @@ static void ideapad_input_novokey(struct ideapad_private *priv) ideapad_input_report(priv, 16); } +static void ideapad_check_special_buttons(struct ideapad_private *priv) +{ + unsigned long bit, value; + + read_ec_data(ideapad_handle, VPCCMD_R_SPECIAL_BUTTONS, &value); + + for (bit = 0; bit < 16; bit++) { + if (test_bit(bit, &value)) { + switch (bit) { + case 6: + /* Thermal Management button */ + ideapad_input_report(priv, 65); + break; + case 1: + /* OneKey Theater button */ + ideapad_input_report(priv, 64); + break; + } + } + } +} + /* * backlight */ @@ -785,6 +812,8 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event) ideapad_sync_rfk_state(priv); break; case 13: + case 11: + case 7: case 6: ideapad_input_report(priv, vpc_bit); break; @@ -797,6 +826,9 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event) case 2: ideapad_backlight_notify_power(priv); break; + case 0: + ideapad_check_special_buttons(priv); + break; default: pr_info("Unknown event: %lu\n", vpc_bit); } -- cgit v1.2.3 From 07a4a4fc83dd95bc7eb842cf9510ddcb45691a88 Mon Sep 17 00:00:00 2001 From: Maxim Mikityanskiy Date: Fri, 6 Jul 2012 16:08:00 +0800 Subject: ideapad: add Lenovo IdeaPad Z570 support (part 2) The patch adds support for Lenovo IdeaPad Z570 laptop. It makes all special keys working, adds possibility to control fan like Windows does, controls Touchpad Disabled LED, toggles touchpad state via keyboard controller and corrects touchpad behavior on resume from suspend. It is new, modified version of patch. Now it does not depend on psmouse and does not need patching of input subsystem. Signed-off-by: Maxim Mikityanskiy This is part 2 for touchpad toggle Signed-off-by: Ike Panhc Signed-off-by: Matthew Garrett --- drivers/platform/x86/Kconfig | 1 + drivers/platform/x86/ideapad-laptop.c | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 637074d89790..c86bae828c28 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -289,6 +289,7 @@ config IDEAPAD_LAPTOP tristate "Lenovo IdeaPad Laptop Extras" depends on ACPI depends on RFKILL && INPUT + depends on SERIO_I8042 select INPUT_SPARSEKMAP help This is a driver for the rfkill switches on Lenovo IdeaPad netbooks. diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index 2396242e8418..7bc1b6c60e56 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -36,6 +36,7 @@ #include #include #include +#include #define IDEAPAD_RFKILL_DEV_NUM (3) @@ -526,6 +527,8 @@ static const struct key_entry ideapad_keymap[] = { { KE_KEY, 17, { KEY_PROG2 } }, { KE_KEY, 64, { KEY_PROG3 } }, { KE_KEY, 65, { KEY_PROG4 } }, + { KE_KEY, 66, { KEY_TOUCHPAD_OFF } }, + { KE_KEY, 67, { KEY_TOUCHPAD_ON } }, { KE_END, 0 }, }; @@ -718,6 +721,24 @@ static const struct acpi_device_id ideapad_device_ids[] = { }; MODULE_DEVICE_TABLE(acpi, ideapad_device_ids); +static void ideapad_sync_touchpad_state(struct acpi_device *adevice) +{ + struct ideapad_private *priv = dev_get_drvdata(&adevice->dev); + unsigned long value; + + /* Without reading from EC touchpad LED doesn't switch state */ + if (!read_ec_data(adevice->handle, VPCCMD_R_TOUCHPAD, &value)) { + /* Some IdeaPads don't really turn off touchpad - they only + * switch the LED state. We (de)activate KBC AUX port to turn + * touchpad off and on. We send KEY_TOUCHPAD_OFF and + * KEY_TOUCHPAD_ON to not to get out of sync with LED */ + unsigned char param; + i8042_command(¶m, value ? I8042_CMD_AUX_ENABLE : + I8042_CMD_AUX_DISABLE); + ideapad_input_report(priv, value ? 67 : 66); + } +} + static int __devinit ideapad_acpi_add(struct acpi_device *adevice) { int ret, i; @@ -754,6 +775,7 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice) priv->rfk[i] = NULL; } ideapad_sync_rfk_state(priv); + ideapad_sync_touchpad_state(adevice); if (!acpi_video_backlight_support()) { ret = ideapad_backlight_init(priv); @@ -817,6 +839,9 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event) case 6: ideapad_input_report(priv, vpc_bit); break; + case 5: + ideapad_sync_touchpad_state(adevice); + break; case 4: ideapad_backlight_notify_brightness(priv); break; @@ -836,6 +861,15 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event) } } +static int ideapad_acpi_resume(struct device *device) +{ + ideapad_sync_rfk_state(ideapad_priv); + ideapad_sync_touchpad_state(to_acpi_device(device)); + return 0; +} + +static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume); + static struct acpi_driver ideapad_acpi_driver = { .name = "ideapad_acpi", .class = "IdeaPad", @@ -843,6 +877,7 @@ static struct acpi_driver ideapad_acpi_driver = { .ops.add = ideapad_acpi_add, .ops.remove = ideapad_acpi_remove, .ops.notify = ideapad_acpi_notify, + .drv.pm = &ideapad_pm, .owner = THIS_MODULE, }; -- cgit v1.2.3 From 0c7bbeb9f1373cea9e8efb43221118be2102a01c Mon Sep 17 00:00:00 2001 From: Maxim Mikityanskiy Date: Fri, 6 Jul 2012 16:08:11 +0800 Subject: ideapad: add Lenovo IdeaPad Z570 support (part 3) The patch adds support for Lenovo IdeaPad Z570 laptop. It makes all special keys working, adds possibility to control fan like Windows does, controls Touchpad Disabled LED, toggles touchpad state via keyboard controller and corrects touchpad behavior on resume from suspend. It is new, modified version of patch. Now it does not depend on psmouse and does not need patching of input subsystem. Signed-off-by: Maxim Mikityanskiy This is the part 3 for fan control Signed-off-by: Ike Panhc Signed-off-by: Matthew Garrett --- drivers/platform/x86/ideapad-laptop.c | 43 ++++++++++++++++++++++++++++++++--- 1 file changed, 40 insertions(+), 3 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index 7bc1b6c60e56..dae7abe1d711 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -64,8 +64,10 @@ enum { VPCCMD_R_3G, VPCCMD_W_3G, VPCCMD_R_ODD, /* 0x21 */ - VPCCMD_R_RF = 0x23, + VPCCMD_W_FAN, + VPCCMD_R_RF, VPCCMD_W_RF, + VPCCMD_R_FAN = 0x2B, VPCCMD_R_SPECIAL_BUTTONS = 0x31, VPCCMD_W_BL_POWER = 0x33, }; @@ -358,14 +360,46 @@ static ssize_t store_ideapad_cam(struct device *dev, return -EINVAL; ret = write_ec_cmd(ideapad_handle, VPCCMD_W_CAMERA, state); if (ret < 0) - return ret; + return -EIO; return count; } static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam); +static ssize_t show_ideapad_fan(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + unsigned long result; + + if (read_ec_data(ideapad_handle, VPCCMD_R_FAN, &result)) + return sprintf(buf, "-1\n"); + return sprintf(buf, "%lu\n", result); +} + +static ssize_t store_ideapad_fan(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret, state; + + if (!count) + return 0; + if (sscanf(buf, "%i", &state) != 1) + return -EINVAL; + if (state < 0 || state > 4 || state == 3) + return -EINVAL; + ret = write_ec_cmd(ideapad_handle, VPCCMD_W_FAN, state); + if (ret < 0) + return -EIO; + return count; +} + +static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan); + static struct attribute *ideapad_attributes[] = { &dev_attr_camera_power.attr, + &dev_attr_fan_mode.attr, NULL }; @@ -379,7 +413,10 @@ static umode_t ideapad_is_visible(struct kobject *kobj, if (attr == &dev_attr_camera_power.attr) supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg)); - else + else if (attr == &dev_attr_fan_mode.attr) { + unsigned long value; + supported = !read_ec_data(ideapad_handle, VPCCMD_R_FAN, &value); + } else supported = true; return supported ? attr->mode : 0; -- cgit v1.2.3