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Code Issues Releases Wiki Activity

ACPI / LPSS: introduce flags

Browse source 
Replace the booleans with a single flags member variable.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Heikki Krogerus 2014-09-02 10:55:07 +03:00 committed by Rafael J. Wysocki
parent 69e273c0b0
commit ff8c1af5e7
1 changed files with 29 additions and 50 deletions
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79
drivers/acpi/acpi_lpss.c
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@ -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)