Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "This contains driver changes that are tightly connected to SoC
  specific code. Aside from smaller cleanups and bug fixes, here is a
  list of the notable changes.

  New device drivers:

   - The Turris Mox router has a new "moxtet" bus driver for its
     on-board pluggable extension bus. The same platform also gains a
     firmware driver.

   - The Samsung Exynos family gains a new Chipid driver exporting using
     the soc device sysfs interface

   - A similar socinfo driver for Qualcomm Snapdragon chips.

   - A firmware driver for the NXP i.MX DSP IPC protocol using shared
     memory and a mailbox

  Other changes:

   - The i.MX reset controller driver now supports the NXP i.MX8MM chip

   - Amlogic SoC specific drivers gain support for the S905X3 and A311D
     chips

   - A rework of the TI Davinci framebuffer driver to allow important
     cleanups in the platform code

   - A couple of device drivers for removed ARM SoC platforms are
     removed. Most of the removals were picked up by other maintainers,
     this contains whatever was left"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (123 commits)
  bus: uniphier-system-bus: use devm_platform_ioremap_resource()
  soc: ti: ti_sci_pm_domains: Add support for exclusive and shared access
  dt-bindings: ti_sci_pm_domains: Add support for exclusive and shared access
  firmware: ti_sci: Allow for device shared and exclusive requests
  bus: imx-weim: remove incorrect __init annotations
  fbdev: remove w90x900/nuc900 platform drivers
  spi: remove w90x900 driver
  net: remove w90p910-ether driver
  net: remove ks8695 driver
  firmware: turris-mox-rwtm: Add sysfs documentation
  firmware: Add Turris Mox rWTM firmware driver
  dt-bindings: firmware: Document cznic,turris-mox-rwtm binding
  bus: moxtet: fix unsigned comparison to less than zero
  bus: moxtet: remove set but not used variable 'dummy'
  ARM: scoop: Use the right include
  dt-bindings: power: add Amlogic Everything-Else power domains bindings
  soc: amlogic: Add support for Everything-Else power domains controller
  fbdev: da8xx: use resource management for dma
  fbdev: da8xx-fb: drop a redundant if
  fbdev: da8xx-fb: use devm_platform_ioremap_resource()
  ...

1 files changed, 16 insertions, 15 deletions

diff --git a/drivers/soc/renesas/rmobile-sysc.c b/drivers/soc/renesas/rmobile-sysc.c
index 421ae1c887d8..54b616ad4a62 100644
--- a/drivers/soc/renesas/rmobile-sysc.c
+++ b/drivers/soc/renesas/rmobile-sysc.c
@@ -48,12 +48,8 @@ struct rmobile_pm_domain *to_rmobile_pd(struct generic_pm_domain *d)
 static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
 {
 	struct rmobile_pm_domain *rmobile_pd = to_rmobile_pd(genpd);
-	unsigned int mask;
+	unsigned int mask = BIT(rmobile_pd->bit_shift);
 
-	if (rmobile_pd->bit_shift == ~0)
-		return -EBUSY;
-
-	mask = BIT(rmobile_pd->bit_shift);
 	if (rmobile_pd->suspend) {
 		int ret = rmobile_pd->suspend();
 
@@ -80,14 +76,10 @@ static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
 
 static int __rmobile_pd_power_up(struct rmobile_pm_domain *rmobile_pd)
 {
-	unsigned int mask;
+	unsigned int mask = BIT(rmobile_pd->bit_shift);
 	unsigned int retry_count;
 	int ret = 0;
 
-	if (rmobile_pd->bit_shift == ~0)
-		return 0;
-
-	mask = BIT(rmobile_pd->bit_shift);
 	if (__raw_readl(rmobile_pd->base + PSTR) & mask)
 		return ret;
 
@@ -122,11 +114,15 @@ static void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
 	struct dev_power_governor *gov = rmobile_pd->gov;
 
 	genpd->flags |= GENPD_FLAG_PM_CLK | GENPD_FLAG_ACTIVE_WAKEUP;
-	genpd->power_off		= rmobile_pd_power_down;
-	genpd->power_on			= rmobile_pd_power_up;
-	genpd->attach_dev		= cpg_mstp_attach_dev;
-	genpd->detach_dev		= cpg_mstp_detach_dev;
-	__rmobile_pd_power_up(rmobile_pd);
+	genpd->attach_dev = cpg_mstp_attach_dev;
+	genpd->detach_dev = cpg_mstp_detach_dev;
+
+	if (!(genpd->flags & GENPD_FLAG_ALWAYS_ON)) {
+		genpd->power_off = rmobile_pd_power_down;
+		genpd->power_on = rmobile_pd_power_up;
+		__rmobile_pd_power_up(rmobile_pd);
+	}
+
 	pm_genpd_init(genpd, gov ? : &simple_qos_governor, false);
 }
 
@@ -270,6 +266,11 @@ static void __init rmobile_setup_pm_domain(struct device_node *np,
 		break;
 
 	case PD_NORMAL:
+		if (pd->bit_shift == ~0) {
+			/* Top-level always-on domain */
+			pr_debug("PM domain %s is always-on domain\n", name);
+			pd->genpd.flags |= GENPD_FLAG_ALWAYS_ON;
+		}
 		break;
 	}