Skip to content

L
linux
Commit e51e8d5d authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files
Options

Merge tag 'omap-for-v4.20/ti-sysc-take2-signed' of... 

Merge tag 'omap-for-v4.20/ti-sysc-take2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers

TI sysc driver changes for v4.20 merge window

This series gets rid of the SYSC_QUIRK_RESOURCE_PROVIDER to make device
detection happen mostly only if #define DEBUG is set. Few core devices still
need to be detected to set legacy quirks.

We also add support for booting am335x, am437x and dra7 SoCs with L4 devices
defined in device tree instead of legacy platform data.

And finally we simplify suspend with just SET_NOIRQ_SYSTEM_SLEEP_PM_OPS
and dropping the custom functions that were attempting to work around
issues that really turned out to be child device driver related issues.

Apologies for a late pull request, debugging the suspend issues took a while
and I did not want to send these changes until that got sorted out.

* tag 'omap-for-v4.20/ti-sysc-take2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Just use SET_NOIRQ_SYSTEM_SLEEP_PM_OPS
  bus: ti-sysc: Make some warnings debug only
  bus: ti-sysc: Detect devices for debug on dra7
  bus: ti-sysc: Detect timer and gpio on dra7
  bus: ti-sysc: Detect devices on am335x when DEBUG is enabled
  bus: ti-sysc: Detect more devices on am473x for debugging
  bus: ti-sysc: Update revision masks to support am437x
  bus: ti-sysc: Defer suspend as needed
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parents 9620135f f5e80203
Hide whitespace changes
Inline Side-by-side
Showing with 48 additions and 124 deletions
drivers/bus/ti-sysc.c
View file @ e51e8d5d
......@@ -701,69 +701,7 @@ static int __maybe_unused sysc_runtime_resume(struct device *dev)
return error;
}
#ifdef CONFIG_PM_SLEEP
static int sysc_suspend(struct device *dev)
{
struct sysc *ddata;
int error;
ddata = dev_get_drvdata(dev);
if (ddata->cfg.quirks & (SYSC_QUIRK_RESOURCE_PROVIDER |
SYSC_QUIRK_LEGACY_IDLE))
return 0;
if (!ddata->enabled)
return 0;
dev_dbg(ddata->dev, "%s %s\n", __func__,
ddata->name ? ddata->name : "");
error = pm_runtime_put_sync_suspend(dev);
if (error < 0) {
dev_warn(ddata->dev, "%s not idle %i %s\n",
__func__, error,
ddata->name ? ddata->name : "");
return 0;
}
ddata->needs_resume = true;
return 0;
}
static int sysc_resume(struct device *dev)
{
struct sysc *ddata;
int error;
ddata = dev_get_drvdata(dev);
if (ddata->cfg.quirks & (SYSC_QUIRK_RESOURCE_PROVIDER |
SYSC_QUIRK_LEGACY_IDLE))
return 0;
if (ddata->needs_resume) {
dev_dbg(ddata->dev, "%s %s\n", __func__,
ddata->name ? ddata->name : "");
error = pm_runtime_get_sync(dev);
if (error < 0) {
dev_err(ddata->dev, "%s error %i %s\n",
__func__, error,
ddata->name ? ddata->name : "");
return error;
}
ddata->needs_resume = false;
}
return 0;
}
static int sysc_noirq_suspend(struct device *dev)
static int __maybe_unused sysc_noirq_suspend(struct device *dev)
{
struct sysc *ddata;
......@@ -772,21 +710,10 @@ static int sysc_noirq_suspend(struct device *dev)
if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
return 0;
if (!(ddata->cfg.quirks & SYSC_QUIRK_RESOURCE_PROVIDER))
return 0;
if (!ddata->enabled)
return 0;
dev_dbg(ddata->dev, "%s %s\n", __func__,
ddata->name ? ddata->name : "");
ddata->needs_resume = true;
return sysc_runtime_suspend(dev);
return pm_runtime_force_suspend(dev);
}
static int sysc_noirq_resume(struct device *dev)
static int __maybe_unused sysc_noirq_resume(struct device *dev)
{
struct sysc *ddata;
......@@ -795,24 +722,10 @@ static int sysc_noirq_resume(struct device *dev)
if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
return 0;
if (!(ddata->cfg.quirks & SYSC_QUIRK_RESOURCE_PROVIDER))
return 0;
if (ddata->needs_resume) {
dev_dbg(ddata->dev, "%s %s\n", __func__,
ddata->name ? ddata->name : "");
ddata->needs_resume = false;
return sysc_runtime_resume(dev);
}
return 0;
return pm_runtime_force_resume(dev);
}
#endif
static const struct dev_pm_ops sysc_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(sysc_suspend, sysc_resume)
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(sysc_noirq_suspend, sysc_noirq_resume)
SET_RUNTIME_PM_OPS(sysc_runtime_suspend,
sysc_runtime_resume,
......@@ -845,28 +758,8 @@ struct sysc_revision_quirk {
}
static const struct sysc_revision_quirk sysc_revision_quirks[] = {
/* These need to use noirq_suspend */
SYSC_QUIRK("control", 0, 0, 0x10, -1, 0x40000900, 0xffffffff,
SYSC_QUIRK_RESOURCE_PROVIDER),
SYSC_QUIRK("i2c", 0, 0, 0x10, 0x90, 0x5040000a, 0xffffffff,
SYSC_QUIRK_RESOURCE_PROVIDER),
SYSC_QUIRK("mcspi", 0, 0, 0x10, -1, 0x40300a0b, 0xffffffff,
SYSC_QUIRK_RESOURCE_PROVIDER),
SYSC_QUIRK("prcm", 0, 0, -1, -1, 0x40000100, 0xffffffff,
SYSC_QUIRK_RESOURCE_PROVIDER),
SYSC_QUIRK("ocp2scp", 0, 0, 0x10, 0x14, 0x50060005, 0xffffffff,
SYSC_QUIRK_RESOURCE_PROVIDER),
SYSC_QUIRK("padconf", 0, 0, 0x10, -1, 0x4fff0800, 0xffffffff,
SYSC_QUIRK_RESOURCE_PROVIDER),
SYSC_QUIRK("scm", 0, 0, 0x10, -1, 0x40000900, 0xffffffff,
SYSC_QUIRK_RESOURCE_PROVIDER),
SYSC_QUIRK("scrm", 0, 0, -1, -1, 0x00000010, 0xffffffff,
SYSC_QUIRK_RESOURCE_PROVIDER),
SYSC_QUIRK("sdma", 0, 0, 0x2c, 0x28, 0x00010900, 0xffffffff,
SYSC_QUIRK_RESOURCE_PROVIDER),
/* These drivers need to be fixed to not use pm_runtime_irq_safe() */
SYSC_QUIRK("gpio", 0, 0, 0x10, 0x114, 0x50600801, 0xffffffff,
SYSC_QUIRK("gpio", 0, 0, 0x10, 0x114, 0x50600801, 0xffff00ff,
SYSC_QUIRK_LEGACY_IDLE | SYSC_QUIRK_OPT_CLKS_IN_RESET),
SYSC_QUIRK("mmu", 0, 0, 0x10, 0x14, 0x00000020, 0xffffffff,
SYSC_QUIRK_LEGACY_IDLE),
......@@ -881,38 +774,70 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = {
SYSC_QUIRK("timer", 0, 0, 0x10, 0x14, 0x00000015, 0xffffffff,
SYSC_QUIRK_LEGACY_IDLE),
/* Some timers on omap4 and later */
SYSC_QUIRK("timer", 0, 0, 0x10, -1, 0x4fff1301, 0xffffffff,
SYSC_QUIRK("timer", 0, 0, 0x10, -1, 0x50002100, 0xffffffff,
SYSC_QUIRK_LEGACY_IDLE),
SYSC_QUIRK("timer", 0, 0, 0x10, -1, 0x4fff1301, 0xffff00ff,
SYSC_QUIRK_LEGACY_IDLE),
SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x00000052, 0xffffffff,
SYSC_QUIRK_LEGACY_IDLE),
/* Uarts on omap4 and later */
SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x50411e03, 0xffffffff,
SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x50411e03, 0xffff00ff,
SYSC_QUIRK_LEGACY_IDLE),
/* These devices don't yet suspend properly without legacy setting */
SYSC_QUIRK("sdio", 0, 0, 0x10, -1, 0x40202301, 0xffffffff,
SYSC_QUIRK_LEGACY_IDLE),
SYSC_QUIRK("wdt", 0, 0, 0x10, 0x14, 0x502a0500, 0xffffffff,
SYSC_QUIRK_LEGACY_IDLE),
SYSC_QUIRK("wdt", 0, 0, 0x10, 0x14, 0x502a0d00, 0xffffffff,
SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x47422e03, 0xffffffff,
SYSC_QUIRK_LEGACY_IDLE),
#ifdef DEBUG
SYSC_QUIRK("adc", 0, 0, 0x10, -1, 0x47300001, 0xffffffff, 0),
SYSC_QUIRK("atl", 0, 0, -1, -1, 0x0a070100, 0xffffffff, 0),
SYSC_QUIRK("aess", 0, 0, 0x10, -1, 0x40000000, 0xffffffff, 0),
SYSC_QUIRK("cm", 0, 0, -1, -1, 0x40000301, 0xffffffff, 0),
SYSC_QUIRK("control", 0, 0, 0x10, -1, 0x40000900, 0xffffffff, 0),
SYSC_QUIRK("cpgmac", 0, 0x1200, 0x1208, 0x1204, 0x4edb1902,
0xffff00f0, 0),
SYSC_QUIRK("dcan", 0, 0, -1, -1, 0xffffffff, 0xffffffff, 0),
SYSC_QUIRK("dcan", 0, 0, -1, -1, 0x00001401, 0xffffffff, 0),
SYSC_QUIRK("dwc3", 0, 0, 0x10, -1, 0x500a0200, 0xffffffff, 0),
SYSC_QUIRK("epwmss", 0, 0, 0x4, -1, 0x47400001, 0xffffffff, 0),
SYSC_QUIRK("gpu", 0, 0x1fc00, 0x1fc10, -1, 0, 0, 0),
SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x00000006, 0xffffffff, 0),
SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x0000000a, 0xffffffff, 0),
SYSC_QUIRK("hsi", 0, 0, 0x10, 0x14, 0x50043101, 0xffffffff, 0),
SYSC_QUIRK("iss", 0, 0, 0x10, -1, 0x40000101, 0xffffffff, 0),
SYSC_QUIRK("i2c", 0, 0, 0x10, 0x90, 0x5040000a, 0xfffff0f0, 0),
SYSC_QUIRK("lcdc", 0, 0, 0x54, -1, 0x4f201000, 0xffffffff, 0),
SYSC_QUIRK("mcasp", 0, 0, 0x4, -1, 0x44306302, 0xffffffff, 0),
SYSC_QUIRK("mcasp", 0, 0, 0x4, -1, 0x44307b02, 0xffffffff, 0),
SYSC_QUIRK("mcbsp", 0, -1, 0x8c, -1, 0, 0, 0),
SYSC_QUIRK("mcspi", 0, 0, 0x10, -1, 0x40300a0b, 0xffff00ff, 0),
SYSC_QUIRK("mcspi", 0, 0, 0x110, 0x114, 0x40300a0b, 0xffffffff, 0),
SYSC_QUIRK("mailbox", 0, 0, 0x10, -1, 0x00000400, 0xffffffff, 0),
SYSC_QUIRK("m3", 0, 0, -1, -1, 0x5f580105, 0x0fff0f00, 0),
SYSC_QUIRK("ocp2scp", 0, 0, 0x10, 0x14, 0x50060005, 0xfffffff0, 0),
SYSC_QUIRK("ocp2scp", 0, 0, -1, -1, 0x50060007, 0xffffffff, 0),
SYSC_QUIRK("padconf", 0, 0, 0x10, -1, 0x4fff0800, 0xffffffff, 0),
SYSC_QUIRK("prcm", 0, 0, -1, -1, 0x40000100, 0xffffffff, 0),
SYSC_QUIRK("prcm", 0, 0, -1, -1, 0x00004102, 0xffffffff, 0),
SYSC_QUIRK("prcm", 0, 0, -1, -1, 0x40000400, 0xffffffff, 0),
SYSC_QUIRK("scm", 0, 0, 0x10, -1, 0x40000900, 0xffffffff, 0),
SYSC_QUIRK("scm", 0, 0, -1, -1, 0x4e8b0100, 0xffffffff, 0),
SYSC_QUIRK("scm", 0, 0, -1, -1, 0x4f000100, 0xffffffff, 0),
SYSC_QUIRK("scm", 0, 0, -1, -1, 0x40000900, 0xffffffff, 0),
SYSC_QUIRK("scrm", 0, 0, -1, -1, 0x00000010, 0xffffffff, 0),
SYSC_QUIRK("sdio", 0, 0, 0x10, -1, 0x40202301, 0xffff0ff0, 0),
SYSC_QUIRK("sdio", 0, 0x2fc, 0x110, 0x114, 0x31010000, 0xffffffff, 0),
SYSC_QUIRK("sdma", 0, 0, 0x2c, 0x28, 0x00010900, 0xffffffff, 0),
SYSC_QUIRK("slimbus", 0, 0, 0x10, -1, 0x40000902, 0xffffffff, 0),
SYSC_QUIRK("slimbus", 0, 0, 0x10, -1, 0x40002903, 0xffffffff, 0),
SYSC_QUIRK("spinlock", 0, 0, 0x10, -1, 0x50020000, 0xffffffff, 0),
SYSC_QUIRK("rng", 0, 0x1fe0, 0x1fe4, -1, 0x00000020, 0xffffffff, 0),
SYSC_QUIRK("rtc", 0, 0x74, 0x78, -1, 0x4eb01908, 0xffff00f0, 0),
SYSC_QUIRK("timer32k", 0, 0, 0x4, -1, 0x00000060, 0xffffffff, 0),
SYSC_QUIRK("usbhstll", 0, 0, 0x10, 0x14, 0x00000004, 0xffffffff, 0),
SYSC_QUIRK("usb_host_hs", 0, 0, 0x10, 0x14, 0x50700100, 0xffffffff, 0),
SYSC_QUIRK("usb_otg_hs", 0, 0x400, 0x404, 0x408, 0x00000050,
0xffffffff, 0),
SYSC_QUIRK("wdt", 0, 0, 0x10, 0x14, 0x502a0500, 0xfffff0f0, 0),
SYSC_QUIRK("vfpe", 0, 0, 0x104, -1, 0x4d001200, 0xffffffff, 0),
#endif
};
......@@ -1221,8 +1146,8 @@ static int sysc_child_suspend_noirq(struct device *dev)
if (!pm_runtime_status_suspended(dev)) {
error = pm_generic_runtime_suspend(dev);
if (error) {
dev_warn(dev, "%s busy at %i: %i\n",
__func__, __LINE__, error);
dev_dbg(dev, "%s busy at %i: %i\n",
__func__, __LINE__, error);
return 0;
}
......
include/linux/platform_data/ti-sysc.h
View file @ e51e8d5d
......@@ -46,7 +46,6 @@ struct sysc_regbits {
s8 emufree_shift;
};
#define SYSC_QUIRK_RESOURCE_PROVIDER BIT(9)
#define SYSC_QUIRK_LEGACY_IDLE BIT(8)
#define SYSC_QUIRK_RESET_STATUS BIT(7)
#define SYSC_QUIRK_NO_IDLE_ON_INIT BIT(6)
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7