The Pin Function Controller module in R-Car H3 ES2.0 differs from
ES1.x.
Add a Proof-of-Concept for detecting the SoC revision at the runtime
using the new soc_device_match() API, and skeleton code for selecting
the pinctrl tables for the actual SoC revision.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
drivers/pinctrl/sh-pfc/pfc-r8a7795.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
index 2e8cc2adbed7e251..3f58bfd676ce94c2 100644
--- a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
+++ b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
@@ -9,6 +9,7 @@
*/
#include <linux/kernel.h>
+#include <linux/sys_soc.h>
#include "core.h"
#include "sh_pfc.h"
@@ -5401,7 +5402,25 @@ static void r8a7795_pinmux_set_bias(struct sh_pfc *pfc, unsigned int pin,
sh_pfc_write_reg(pfc, PUEN + reg, 32, enable);
}
+static const struct soc_device_attribute r8a7795es1[] = {
+ { .soc_id = "r8a7795", .revision = "ES1.*" },
+ { /* sentinel */ }
+};
+
+static int r8a7795_pinmux_init(struct sh_pfc *pfc)
+{
+ if (soc_device_match(r8a7795es1)) {
+ pr_info("%s: R-Car H3 ES1.x detected\n", __func__);
+ // FIXME Fixup r8a7795_pinmux_info for ES1.x
+ } else {
+ pr_info("%s: R-Car H3 >= ES2.0\n", __func__);
+ // FIXME Fixup r8a7795_pinmux_info for ES2.0
+ }
+ return 0;
+}
+
static const struct sh_pfc_soc_operations r8a7795_pinmux_ops = {
+ .init = r8a7795_pinmux_init,
.pin_to_pocctrl = r8a7795_pin_to_pocctrl,
.get_bias = r8a7795_pinmux_get_bias,
.set_bias = r8a7795_pinmux_set_bias,
--
1.9.1
