Commit ff8c1af5 authored by Heikki Krogerus's avatar Heikki Krogerus Committed by Rafael J. Wysocki
Browse files

ACPI / LPSS: introduce flags 



Replace the booleans with a single flags member variable.

Signed-off-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 69e273c0

drivers/acpi/acpi_lpss.c

+29 −50
Original line number Diff line number Diff line
@@ -54,6 +54,13 @@ ACPI_MODULE_NAME("acpi_lpss"); 


#define LPSS_PRV_REG_COUNT		9



/* LPSS Flags */

#define LPSS_CLK			BIT(0)

#define LPSS_CLK_GATE			BIT(1)

#define LPSS_CLK_DIVIDER		BIT(2)

#define LPSS_LTR			BIT(3)

#define LPSS_SAVE_CTX			BIT(4)



struct lpss_shared_clock {

	const char *name;

	unsigned long rate;
@@ -63,21 +70,17 @@ struct lpss_shared_clock { 
struct lpss_private_data;



struct lpss_device_desc {

	bool clk_required;

	const char *clkdev_name;

	bool ltr_required;

	unsigned int flags;

	unsigned int prv_offset;

	size_t prv_size_override;

	bool clk_divider;

	bool clk_gate;

	bool save_ctx;

	struct lpss_shared_clock *shared_clock;

	void (*setup)(struct lpss_private_data *pdata);

};



static struct lpss_device_desc lpss_dma_desc = {

	.clk_required = true,

	.clkdev_name = "hclk",

	.flags = LPSS_CLK,

};



struct lpss_private_data {
@@ -113,42 +116,26 @@ static void lpss_i2c_setup(struct lpss_private_data *pdata) 
	writel(val, pdata->mmio_base + offset);

}



static struct lpss_device_desc wpt_dev_desc = {

	.clk_required = true,

	.prv_offset = 0x800,

	.ltr_required = true,

	.clk_divider = true,

	.clk_gate = true,

};



static struct lpss_device_desc lpt_dev_desc = {

	.clk_required = true,

	.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_LTR,

	.prv_offset = 0x800,

	.ltr_required = true,

	.clk_divider = true,

	.clk_gate = true,

};



static struct lpss_device_desc lpt_i2c_dev_desc = {

	.clk_required = true,

	.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_LTR,

	.prv_offset = 0x800,

	.ltr_required = true,

	.clk_gate = true,

};



static struct lpss_device_desc lpt_uart_dev_desc = {

	.clk_required = true,

	.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_LTR,

	.prv_offset = 0x800,

	.ltr_required = true,

	.clk_divider = true,

	.clk_gate = true,

	.setup = lpss_uart_setup,

};



static struct lpss_device_desc lpt_sdio_dev_desc = {

	.flags = LPSS_LTR,

	.prv_offset = 0x1000,

	.prv_size_override = 0x1018,

	.ltr_required = true,

};



static struct lpss_shared_clock pwm_clock = {
@@ -157,30 +144,23 @@ static struct lpss_shared_clock pwm_clock = { 
};



static struct lpss_device_desc byt_pwm_dev_desc = {

	.clk_required = true,

	.save_ctx = true,

	.flags = LPSS_CLK | LPSS_SAVE_CTX,

	.shared_clock = &pwm_clock,

};



static struct lpss_device_desc byt_uart_dev_desc = {

	.clk_required = true,

	.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,

	.prv_offset = 0x800,

	.clk_divider = true,

	.clk_gate = true,

	.save_ctx = true,

	.setup = lpss_uart_setup,

};



static struct lpss_device_desc byt_spi_dev_desc = {

	.clk_required = true,

	.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,

	.prv_offset = 0x400,

	.clk_divider = true,

	.clk_gate = true,

	.save_ctx = true,

};



static struct lpss_device_desc byt_sdio_dev_desc = {

	.clk_required = true,

	.flags = LPSS_CLK,

};



static struct lpss_shared_clock i2c_clock = {
@@ -189,9 +169,8 @@ static struct lpss_shared_clock i2c_clock = { 
};



static struct lpss_device_desc byt_i2c_dev_desc = {

	.clk_required = true,

	.flags = LPSS_CLK | LPSS_SAVE_CTX,

	.prv_offset = 0x800,

	.save_ctx = true,

	.shared_clock = &i2c_clock,

	.setup = lpss_i2c_setup,

};
@@ -202,8 +181,7 @@ static struct lpss_shared_clock bsw_pwm_clock = { 
};



static struct lpss_device_desc bsw_pwm_dev_desc = {

	.clk_required = true,

	.save_ctx = true,

	.flags = LPSS_CLK | LPSS_SAVE_CTX,

	.shared_clock = &bsw_pwm_clock,

};
@@ -251,7 +229,8 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = { 
	{ "INT3436", LPSS_ADDR(lpt_sdio_dev_desc) },

	{ "INT3437", },



	{ "INT3438", LPSS_ADDR(wpt_dev_desc) },

	/* Wildcat Point LPSS devices */

	{ "INT3438", LPSS_ADDR(lpt_dev_desc) },



	{ }

};
@@ -314,13 +293,13 @@ static int register_device_clock(struct acpi_device *adev, 
		parent = shared_clock->name;

	}



	if (dev_desc->clk_gate) {

	if (dev_desc->flags & LPSS_CLK_GATE) {

		clk = clk_register_gate(NULL, devname, parent, 0,

					prv_base, 0, 0, NULL);

		parent = devname;

	}



	if (dev_desc->clk_divider) {

	if (dev_desc->flags & LPSS_CLK_DIVIDER) {

		/* Prevent division by zero */

		if (!readl(prv_base))

			writel(LPSS_CLK_DIVIDER_DEF_MASK, prv_base);
@@ -392,7 +371,7 @@ static int acpi_lpss_create_device(struct acpi_device *adev, 


	pdata->dev_desc = dev_desc;



	if (dev_desc->clk_required) {

	if (dev_desc->flags & LPSS_CLK) {

		ret = register_device_clock(adev, pdata);

		if (ret) {

			/* Skip the device, but continue the namespace scan. */
@@ -693,19 +672,19 @@ static int acpi_lpss_platform_notify(struct notifier_block *nb, 


	switch (action) {

	case BUS_NOTIFY_BOUND_DRIVER:

		if (pdata->dev_desc->save_ctx)

		if (pdata->dev_desc->flags & LPSS_SAVE_CTX)

			pdev->dev.pm_domain = &acpi_lpss_pm_domain;

		break;

	case BUS_NOTIFY_UNBOUND_DRIVER:

		if (pdata->dev_desc->save_ctx)

		if (pdata->dev_desc->flags & LPSS_SAVE_CTX)

			pdev->dev.pm_domain = NULL;

		break;

	case BUS_NOTIFY_ADD_DEVICE:

		if (pdata->dev_desc->ltr_required)

		if (pdata->dev_desc->flags & LPSS_LTR)

			return sysfs_create_group(&pdev->dev.kobj,

						  &lpss_attr_group);

	case BUS_NOTIFY_DEL_DEVICE:

		if (pdata->dev_desc->ltr_required)

		if (pdata->dev_desc->flags & LPSS_LTR)

			sysfs_remove_group(&pdev->dev.kobj, &lpss_attr_group);

	default:

		break;
@@ -722,7 +701,7 @@ static void acpi_lpss_bind(struct device *dev) 
{

	struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));



	if (!pdata || !pdata->mmio_base || !pdata->dev_desc->ltr_required)

	if (!pdata || !pdata->mmio_base || !(pdata->dev_desc->flags & LPSS_LTR))

		return;



	if (pdata->mmio_size >= pdata->dev_desc->prv_offset + LPSS_LTR_SIZE)

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