Merge branches 'acpi-ec' and 'acpi-platform' (286180d8) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/acpi/acpi_platform.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@
		#include <linux/err.h>
		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/dma-mapping.h>
		#include <linux/platform_device.h>

		#include "internal.h"
		@@ -102,6 +103,7 @@ struct platform_device acpi_create_platform_device(struct acpi_device adev)
		pdevinfo.res = resources;
		pdevinfo.num_res = count;
		pdevinfo.acpi_node.companion = adev;
		pdevinfo.dma_mask = DMA_BIT_MASK(32);
		pdev = platform_device_register_full(&pdevinfo);
		if (IS_ERR(pdev))
		dev_err(&adev->dev, "platform device creation failed: %ld\n",

drivers/acpi/ec.c

+69 −38

Original line number	Diff line number	Diff line
		@@ -128,12 +128,13 @@ static int EC_FLAGS_SKIP_DSDT_SCAN; /* Not all BIOS survive early DSDT scan */
		static int EC_FLAGS_CLEAR_ON_RESUME; /* Needs acpi_ec_clear() on boot/resume */

		/* --------------------------------------------------------------------------
		Transaction Management
		-------------------------------------------------------------------------- */
		* Transaction Management
		* -------------------------------------------------------------------------- */

		static inline u8 acpi_ec_read_status(struct acpi_ec *ec)
		{
		u8 x = inb(ec->command_addr);

		pr_debug("EC_SC(R) = 0x%2.2x "
		"SCI_EVT=%d BURST=%d CMD=%d IBF=%d OBF=%d\n",
		x,
		@@ -148,6 +149,7 @@ static inline u8 acpi_ec_read_status(struct acpi_ec *ec)
		static inline u8 acpi_ec_read_data(struct acpi_ec *ec)
		{
		u8 x = inb(ec->data_addr);

		pr_debug("EC_DATA(R) = 0x%2.2x\n", x);
		return x;
		}
		@@ -164,10 +166,32 @@ static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
		outb(data, ec->data_addr);
		}

		#ifdef DEBUG
		static const char *acpi_ec_cmd_string(u8 cmd)
		{
		switch (cmd) {
		case 0x80:
		return "RD_EC";
		case 0x81:
		return "WR_EC";
		case 0x82:
		return "BE_EC";
		case 0x83:
		return "BD_EC";
		case 0x84:
		return "QR_EC";
		}
		return "UNKNOWN";
		}
		#else
		#define acpi_ec_cmd_string(cmd) "UNDEF"
		#endif

		static int ec_transaction_completed(struct acpi_ec *ec)
		{
		unsigned long flags;
		int ret = 0;

		spin_lock_irqsave(&ec->lock, flags);
		if (ec->curr && (ec->curr->flags & ACPI_EC_COMMAND_COMPLETE))
		ret = 1;
		@@ -181,7 +205,8 @@ static bool advance_transaction(struct acpi_ec *ec)
		u8 status;
		bool wakeup = false;

		pr_debug("===== %s =====\n", in_interrupt() ? "IRQ" : "TASK");
		pr_debug("===== %s (%d) =====\n",
		in_interrupt() ? "IRQ" : "TASK", smp_processor_id());
		status = acpi_ec_read_status(ec);
		t = ec->curr;
		if (!t)
		@@ -198,7 +223,8 @@ static bool advance_transaction(struct acpi_ec *ec)
		if (t->rlen == t->ri) {
		t->flags \|= ACPI_EC_COMMAND_COMPLETE;
		if (t->command == ACPI_EC_COMMAND_QUERY)
		pr_debug("hardware QR_EC completion\n");
		pr_debug("*** Command(%s) hardware completion ***\n",
		acpi_ec_cmd_string(t->command));
		wakeup = true;
		}
		} else
		@@ -221,7 +247,8 @@ static bool advance_transaction(struct acpi_ec *ec)
		t->flags \|= ACPI_EC_COMMAND_POLL;
		t->rdata[t->ri++] = 0x00;
		t->flags \|= ACPI_EC_COMMAND_COMPLETE;
		pr_debug("software QR_EC completion\n");
		pr_debug("*** Command(%s) software completion ***\n",
		acpi_ec_cmd_string(t->command));
		wakeup = true;
		} else if ((status & ACPI_EC_FLAG_IBF) == 0) {
		acpi_ec_write_cmd(ec, t->command);
		@@ -264,6 +291,7 @@ static int ec_poll(struct acpi_ec *ec)
		{
		unsigned long flags;
		int repeat = 5; /* number of command restarts */

		while (repeat--) {
		unsigned long delay = jiffies +
		msecs_to_jiffies(ec_delay);
		@@ -296,18 +324,25 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
		{
		unsigned long tmp;
		int ret = 0;

		if (EC_FLAGS_MSI)
		udelay(ACPI_EC_MSI_UDELAY);
		/* start transaction */
		spin_lock_irqsave(&ec->lock, tmp);
		/* following two actions should be kept atomic */
		ec->curr = t;
		pr_debug("*** Command(%s) started ***\n",
		acpi_ec_cmd_string(t->command));
		start_transaction(ec);
		spin_unlock_irqrestore(&ec->lock, tmp);
		ret = ec_poll(ec);
		spin_lock_irqsave(&ec->lock, tmp);
		if (ec->curr->command == ACPI_EC_COMMAND_QUERY)
		if (ec->curr->command == ACPI_EC_COMMAND_QUERY) {
		clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
		pr_debug("*** Event stopped ***\n");
		}
		pr_debug("*** Command(%s) stopped ***\n",
		acpi_ec_cmd_string(t->command));
		ec->curr = NULL;
		spin_unlock_irqrestore(&ec->lock, tmp);
		return ret;
		@@ -317,6 +352,7 @@ static int acpi_ec_transaction(struct acpi_ec ec, struct transaction t)
		{
		int status;
		u32 glk;

		if (!ec \|\| (!t) \|\| (t->wlen && !t->wdata) \|\| (t->rlen && !t->rdata))
		return -EINVAL;
		if (t->rdata)
		@@ -333,8 +369,6 @@ static int acpi_ec_transaction(struct acpi_ec ec, struct transaction t)
		goto unlock;
		}
		}
		pr_debug("transaction start (cmd=0x%02x, addr=0x%02x)\n",
		t->command, t->wdata ? t->wdata[0] : 0);
		/* disable GPE during transaction if storm is detected */
		if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
		/* It has to be disabled, so that it doesn't trigger. */
		@@ -355,7 +389,6 @@ static int acpi_ec_transaction(struct acpi_ec ec, struct transaction t)
		t->irq_count);
		set_bit(EC_FLAGS_GPE_STORM, &ec->flags);
		}
		pr_debug("transaction end\n");
		if (ec->global_lock)
		acpi_release_global_lock(glk);
		unlock:
		@@ -419,10 +452,9 @@ int ec_read(u8 addr, u8 *val)
		if (!err) {
		*val = temp_data;
		return 0;
		} else
		}
		return err;
		}

		EXPORT_SYMBOL(ec_read);

		int ec_write(u8 addr, u8 val)
		@@ -436,7 +468,6 @@ int ec_write(u8 addr, u8 val)

		return err;
		}

		EXPORT_SYMBOL(ec_write);

		int ec_transaction(u8 command,
		@@ -446,12 +477,12 @@ int ec_transaction(u8 command,
		struct transaction t = {.command = command,
		.wdata = wdata, .rdata = rdata,
		.wlen = wdata_len, .rlen = rdata_len};

		if (!first_ec)
		return -ENODEV;

		return acpi_ec_transaction(first_ec, &t);
		}

		EXPORT_SYMBOL(ec_transaction);

		/* Get the handle to the EC device */
		@@ -461,7 +492,6 @@ acpi_handle ec_get_handle(void)
		return NULL;
		return first_ec->handle;
		}

		EXPORT_SYMBOL(ec_get_handle);

		/*
		@@ -532,6 +562,7 @@ static int acpi_ec_query_unlocked(struct acpi_ec ec, u8 data)
		struct transaction t = {.command = ACPI_EC_COMMAND_QUERY,
		.wdata = NULL, .rdata = &d,
		.wlen = 0, .rlen = 1};

		if (!ec \|\| !data)
		return -EINVAL;
		/*
		@@ -557,6 +588,7 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
		{
		struct acpi_ec_query_handler *handler =
		kzalloc(sizeof(struct acpi_ec_query_handler), GFP_KERNEL);

		if (!handler)
		return -ENOMEM;

		@@ -569,12 +601,12 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
		mutex_unlock(&ec->mutex);
		return 0;
		}

		EXPORT_SYMBOL_GPL(acpi_ec_add_query_handler);

		void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
		{
		struct acpi_ec_query_handler handler, tmp;

		mutex_lock(&ec->mutex);
		list_for_each_entry_safe(handler, tmp, &ec->list, node) {
		if (query_bit == handler->query_bit) {
		@@ -584,20 +616,20 @@ void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
		}
		mutex_unlock(&ec->mutex);
		}

		EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler);

		static void acpi_ec_run(void *cxt)
		{
		struct acpi_ec_query_handler *handler = cxt;

		if (!handler)
		return;
		pr_debug("start query execution\n");
		pr_debug("##### Query(0x%02x) started #####\n", handler->query_bit);
		if (handler->func)
		handler->func(handler->data);
		else if (handler->handle)
		acpi_evaluate_object(handler->handle, NULL, NULL, NULL);
		pr_debug("stop query execution\n");
		pr_debug("##### Query(0x%02x) stopped #####\n", handler->query_bit);
		kfree(handler);
		}

		@@ -620,8 +652,8 @@ static int acpi_ec_sync_query(struct acpi_ec ec, u8 data)
		if (!copy)
		return -ENOMEM;
		memcpy(copy, handler, sizeof(*copy));
		pr_debug("push query execution (0x%2x) on queue\n",
		value);
		pr_debug("##### Query(0x%02x) scheduled #####\n",
		handler->query_bit);
		return acpi_os_execute((copy->func) ?
		OSL_NOTIFY_HANDLER : OSL_GPE_HANDLER,
		acpi_ec_run, copy);
		@@ -633,6 +665,7 @@ static int acpi_ec_sync_query(struct acpi_ec ec, u8 data)
		static void acpi_ec_gpe_query(void *ec_cxt)
		{
		struct acpi_ec *ec = ec_cxt;

		if (!ec)
		return;
		mutex_lock(&ec->mutex);
		@@ -644,7 +677,7 @@ static int ec_check_sci(struct acpi_ec *ec, u8 state)
		{
		if (state & ACPI_EC_FLAG_SCI) {
		if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) {
		pr_debug("push gpe query to the queue\n");
		pr_debug("*** Event started ***\n");
		return acpi_os_execute(OSL_NOTIFY_HANDLER,
		acpi_ec_gpe_query, ec);
		}
		@@ -667,8 +700,8 @@ static u32 acpi_ec_gpe_handler(acpi_handle gpe_device,
		}

		/* --------------------------------------------------------------------------
		Address Space Management
		-------------------------------------------------------------------------- */
		* Address Space Management
		* -------------------------------------------------------------------------- */

		static acpi_status
		acpi_ec_space_handler(u32 function, acpi_physical_address address,
		@@ -699,27 +732,26 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
		switch (result) {
		case -EINVAL:
		return AE_BAD_PARAMETER;
		break;
		case -ENODEV:
		return AE_NOT_FOUND;
		break;
		case -ETIME:
		return AE_TIME;
		break;
		default:
		return AE_OK;
		}
		}

		/* --------------------------------------------------------------------------
		Driver Interface
		-------------------------------------------------------------------------- */
		* Driver Interface
		* -------------------------------------------------------------------------- */

		static acpi_status
		ec_parse_io_ports(struct acpi_resource resource, void context);

		static struct acpi_ec *make_acpi_ec(void)
		{
		struct acpi_ec *ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);

		if (!ec)
		return NULL;
		ec->flags = 1 << EC_FLAGS_QUERY_PENDING;
		@@ -742,9 +774,8 @@ acpi_ec_register_query_methods(acpi_handle handle, u32 level,

		status = acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer);

		if (ACPI_SUCCESS(status) && sscanf(node_name, "_Q%x", &value) == 1) {
		if (ACPI_SUCCESS(status) && sscanf(node_name, "_Q%x", &value) == 1)
		acpi_ec_add_query_handler(ec, value, handle, NULL, NULL);
		}
		return AE_OK;
		}

		@@ -753,7 +784,6 @@ ec_parse_device(acpi_handle handle, u32 Level, void context, void *retval)
		{
		acpi_status status;
		unsigned long long tmp = 0;

		struct acpi_ec *ec = context;

		/* clear addr values, ec_parse_io_ports depend on it */
		@@ -781,6 +811,7 @@ ec_parse_device(acpi_handle handle, u32 Level, void context, void *retval)
		static int ec_install_handlers(struct acpi_ec *ec)
		{
		acpi_status status;

		if (test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags))
		return 0;
		status = acpi_install_gpe_handler(NULL, ec->gpe,
		@@ -1078,7 +1109,8 @@ int __init acpi_ec_ecdt_probe(void)
		boot_ec->data_addr = ecdt_ptr->data.address;
		boot_ec->gpe = ecdt_ptr->gpe;
		boot_ec->handle = ACPI_ROOT_OBJECT;
		acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle);
		acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id,
		&boot_ec->handle);
		/* Don't trust ECDT, which comes from ASUSTek */
		if (!EC_FLAGS_VALIDATE_ECDT)
		goto install;
		@@ -1162,6 +1194,5 @@ static void __exit acpi_ec_exit(void)
		{

		acpi_bus_unregister_driver(&acpi_ec_driver);
		return;
		}
		#endif /* 0 */