linux-kernel - [PATCH v2 3/3] Input: sun4i-lradc-keys: Add support for R329 and D1

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Message-Id: <20220414002349.24332-3-samuel@sholland.org>
Date:   Wed, 13 Apr 2022 19:23:48 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Hans de Goede <hdegoede@...hat.com>
Cc:     Samuel Holland <samuel@...lland.org>,
        Maxime Ripard <maxime@...no.tech>,
        Rob Herring <robh@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...ts.linux.dev
Subject: [PATCH v2 3/3] Input: sun4i-lradc-keys: Add support for R329 and D1

This LRADC variant uses the same 3/4*AVCC reference voltage as the A83T
variant. The R329 and D1 LRADCs appear to be identical, so D1 support is
accomplished through having the R329 LRADC as a fallback compatible.

Signed-off-by: Samuel Holland <samuel@...lland.org>
---

Changes in v2:
 - Set the new flag for the R329 variant.

 drivers/input/keyboard/sun4i-lradc-keys.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/input/keyboard/sun4i-lradc-keys.c b/drivers/input/keyboard/sun4i-lradc-keys.c
index 5630334a6c09..8f9bfb05244d 100644
--- a/drivers/input/keyboard/sun4i-lradc-keys.c
+++ b/drivers/input/keyboard/sun4i-lradc-keys.c
@@ -78,6 +78,12 @@ static const struct lradc_variant r_lradc_variant_a83t = {
 	.divisor_denominator = 4
 };
 
+static const struct lradc_variant lradc_variant_r329 = {
+	.divisor_numerator = 3,
+	.divisor_denominator = 4,
+	.has_clock_reset = true,
+};
+
 struct sun4i_lradc_keymap {
 	u32 voltage;
 	u32 keycode;
@@ -323,6 +329,8 @@ static const struct of_device_id sun4i_lradc_of_match[] = {
 		.data = &lradc_variant_a10 },
 	{ .compatible = "allwinner,sun8i-a83t-r-lradc",
 		.data = &r_lradc_variant_a83t },
+	{ .compatible = "allwinner,sun50i-r329-lradc",
+		.data = &lradc_variant_r329 },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, sun4i_lradc_of_match);
-- 
2.35.1