[PATCH v2 1/3] clk: renesas: rzg2l-cpg: Use GENPD_FLAG_* flags instead of local ones

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From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>

For watchdog PM domain it is necessary to provide GENPD_FLAG_IRQ_SAFE flag
to be able to power on the watchdog PM domain from atomic context. For
this, adjust the current infrastructure to be able to provide GENPD_FLAG_*
for individual PM domains.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
---

Changes in v2:
- none

Changes since RFC:
- none; this patch is new

 drivers/clk/renesas/r9a08g045-cpg.c | 44 +++++++++++------------------
 drivers/clk/renesas/rzg2l-cpg.c     | 13 +++++----
 drivers/clk/renesas/rzg2l-cpg.h     | 10 ++-----
 3 files changed, 28 insertions(+), 39 deletions(-)

diff --git a/drivers/clk/renesas/r9a08g045-cpg.c b/drivers/clk/renesas/r9a08g045-cpg.c
index 213499fc8fb5..ec0672651fe0 100644
--- a/drivers/clk/renesas/r9a08g045-cpg.c
+++ b/drivers/clk/renesas/r9a08g045-cpg.c
@@ -9,6 +9,7 @@
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/pm_domain.h>
 
 #include <dt-bindings/clock/r9a08g045-cpg.h>
 
@@ -258,52 +259,41 @@ static const struct rzg2l_cpg_pm_domain_init_data r9a08g045_pm_domains[] = {
 	/* Keep always-on domain on the first position for proper domains registration. */
 	DEF_PD("always-on",	R9A08G045_PD_ALWAYS_ON,
 				DEF_REG_CONF(0, 0),
-				RZG2L_PD_F_ALWAYS_ON),
+				GENPD_FLAG_ALWAYS_ON),
 	DEF_PD("gic",		R9A08G045_PD_GIC,
 				DEF_REG_CONF(CPG_BUS_ACPU_MSTOP, BIT(3)),
-				RZG2L_PD_F_ALWAYS_ON),
+				GENPD_FLAG_ALWAYS_ON),
 	DEF_PD("ia55",		R9A08G045_PD_IA55,
 				DEF_REG_CONF(CPG_BUS_PERI_CPU_MSTOP, BIT(13)),
-				RZG2L_PD_F_ALWAYS_ON),
+				GENPD_FLAG_ALWAYS_ON),
 	DEF_PD("dmac",		R9A08G045_PD_DMAC,
 				DEF_REG_CONF(CPG_BUS_REG1_MSTOP, GENMASK(3, 0)),
-				RZG2L_PD_F_ALWAYS_ON),
+				GENPD_FLAG_ALWAYS_ON),
 	DEF_PD("wdt0",		R9A08G045_PD_WDT0,
-				DEF_REG_CONF(CPG_BUS_REG0_MSTOP, BIT(0)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_REG0_MSTOP, BIT(0)), 0),
 	DEF_PD("sdhi0",		R9A08G045_PD_SDHI0,
-				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(0)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(0)), 0),
 	DEF_PD("sdhi1",		R9A08G045_PD_SDHI1,
-				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(1)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(1)), 0),
 	DEF_PD("sdhi2",		R9A08G045_PD_SDHI2,
-				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(11)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(11)), 0),
 	DEF_PD("eth0",		R9A08G045_PD_ETHER0,
-				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(2)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(2)), 0),
 	DEF_PD("eth1",		R9A08G045_PD_ETHER1,
-				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(3)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(3)), 0),
 	DEF_PD("i2c0",		R9A08G045_PD_I2C0,
-				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(10)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(10)), 0),
 	DEF_PD("i2c1",		R9A08G045_PD_I2C1,
-				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(11)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(11)), 0),
 	DEF_PD("i2c2",		R9A08G045_PD_I2C2,
-				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(12)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(12)), 0),
 	DEF_PD("i2c3",		R9A08G045_PD_I2C3,
-				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(13)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(13)), 0),
 	DEF_PD("scif0",		R9A08G045_PD_SCIF0,
-				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(1)),
-				RZG2L_PD_F_NONE),
+				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(1)), 0),
 	DEF_PD("vbat",		R9A08G045_PD_VBAT,
 				DEF_REG_CONF(CPG_BUS_MCPU3_MSTOP, BIT(8)),
-				RZG2L_PD_F_ALWAYS_ON),
+				GENPD_FLAG_ALWAYS_ON),
 };
 
 const struct rzg2l_cpg_info r9a08g045_cpg_info = {
diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 88bf39e8c79c..b97996e93042 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -1680,11 +1680,13 @@ static int rzg2l_cpg_power_off(struct generic_pm_domain *domain)
 	return 0;
 }
 
-static int __init rzg2l_cpg_pd_setup(struct rzg2l_cpg_pd *pd, bool always_on)
+static int __init rzg2l_cpg_pd_setup(struct rzg2l_cpg_pd *pd, u32 genpd_flags,
+				     bool always_on)
 {
 	struct dev_power_governor *governor;
 
-	pd->genpd.flags |= GENPD_FLAG_PM_CLK | GENPD_FLAG_ACTIVE_WAKEUP;
+	pd->genpd.flags |= GENPD_FLAG_PM_CLK | GENPD_FLAG_ACTIVE_WAKEUP |
+			   genpd_flags;
 	pd->genpd.attach_dev = rzg2l_cpg_attach_dev;
 	pd->genpd.detach_dev = rzg2l_cpg_detach_dev;
 	if (always_on) {
@@ -1712,7 +1714,7 @@ static int __init rzg2l_cpg_add_clk_domain(struct rzg2l_cpg_priv *priv)
 
 	pd->genpd.name = np->name;
 	pd->priv = priv;
-	ret = rzg2l_cpg_pd_setup(pd, true);
+	ret = rzg2l_cpg_pd_setup(pd, 0, true);
 	if (ret)
 		return ret;
 
@@ -1777,7 +1779,8 @@ static int __init rzg2l_cpg_add_pm_domains(struct rzg2l_cpg_priv *priv)
 		return ret;
 
 	for (unsigned int i = 0; i < info->num_pm_domains; i++) {
-		bool always_on = !!(info->pm_domains[i].flags & RZG2L_PD_F_ALWAYS_ON);
+		u32 genpd_flags = info->pm_domains[i].genpd_flags;
+		bool always_on = !!(genpd_flags & GENPD_FLAG_ALWAYS_ON);
 		struct rzg2l_cpg_pd *pd;
 
 		pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
@@ -1789,7 +1792,7 @@ static int __init rzg2l_cpg_add_pm_domains(struct rzg2l_cpg_priv *priv)
 		pd->id = info->pm_domains[i].id;
 		pd->priv = priv;
 
-		ret = rzg2l_cpg_pd_setup(pd, always_on);
+		ret = rzg2l_cpg_pd_setup(pd, genpd_flags, always_on);
 		if (ret)
 			return ret;
 
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index ecfe7e7ea8a1..881a89b5a710 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -270,14 +270,14 @@ struct rzg2l_cpg_pm_domain_conf {
  * struct rzg2l_cpg_pm_domain_init_data - PM domain init data
  * @name: PM domain name
  * @conf: PM domain configuration
- * @flags: RZG2L PM domain flags (see RZG2L_PD_F_*)
+ * @genpd_flags: genpd flags (see GENPD_FLAG_*)
  * @id: PM domain ID (similar to the ones defined in
  *      include/dt-bindings/clock/<soc-id>-cpg.h)
  */
 struct rzg2l_cpg_pm_domain_init_data {
 	const char * const name;
 	struct rzg2l_cpg_pm_domain_conf conf;
-	u32 flags;
+	u32 genpd_flags;
 	u16 id;
 };
 
@@ -288,13 +288,9 @@ struct rzg2l_cpg_pm_domain_init_data {
 		.conf = { \
 			.mstop = (_mstop_conf), \
 		}, \
-		.flags = (_flags), \
+		.genpd_flags = (_flags), \
 	}
 
-/* Power domain flags. */
-#define RZG2L_PD_F_ALWAYS_ON	BIT(0)
-#define RZG2L_PD_F_NONE		(0)
-
 /**
  * struct rzg2l_cpg_info - SoC-specific CPG Description
  *
-- 
2.39.2
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