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Message-Id: <1450216894-19390-1-git-send-email-peda@lysator.liu.se>
Date: Tue, 15 Dec 2015 23:01:34 +0100
From: Peter Rosin <peda@...ator.liu.se>
To: linux-gpio@...r.kernel.org
Cc: Peter Rosin <peda@...ntia.se>, Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Linus Walleij <linus.walleij@...aro.org>,
Alexandre Courbot <gnurou@...il.com>,
Wei Chen <Wei.Chen@....com>, Barry Song <Baohua.Song@....com>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Peter Rosin <peda@...ator.liu.se>
Subject: [PATCH] gpio: sx150x: Add support for sx1502
From: Peter Rosin <peda@...ntia.se>
Signed-off-by: Peter Rosin <peda@...ntia.se>
---
.../devicetree/bindings/gpio/gpio-sx150x.txt | 3 +-
drivers/gpio/gpio-sx150x.c | 53 ++++++++++++++++++++--
2 files changed, 51 insertions(+), 5 deletions(-)
diff --git a/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
index ba2bb84eeac3..c809acb9c71b 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
@@ -5,7 +5,8 @@ Required properties:
- compatible: should be "semtech,sx1506q",
"semtech,sx1508q",
- "semtech,sx1509q".
+ "semtech,sx1509q",
+ "semtech,sx1502q".
- reg: The I2C slave address for this device.
diff --git a/drivers/gpio/gpio-sx150x.c b/drivers/gpio/gpio-sx150x.c
index 76f920173a2f..0a3105cde82d 100644
--- a/drivers/gpio/gpio-sx150x.c
+++ b/drivers/gpio/gpio-sx150x.c
@@ -32,8 +32,19 @@
#define NO_UPDATE_PENDING -1
/* The chip models of sx150x */
-#define SX150X_456 0
-#define SX150X_789 1
+#define SX150X_123 0
+#define SX150X_456 1
+#define SX150X_789 2
+
+struct sx150x_123_pri {
+ u8 reg_pld_mode;
+ u8 reg_pld_table0;
+ u8 reg_pld_table1;
+ u8 reg_pld_table2;
+ u8 reg_pld_table3;
+ u8 reg_pld_table4;
+ u8 reg_advance;
+};
struct sx150x_456_pri {
u8 reg_pld_mode;
@@ -65,6 +76,7 @@ struct sx150x_device_data {
u8 reg_sense;
u8 ngpios;
union {
+ struct sx150x_123_pri x123;
struct sx150x_456_pri x456;
struct sx150x_789_pri x789;
} pri;
@@ -142,12 +154,33 @@ static const struct sx150x_device_data sx150x_devices[] = {
},
.ngpios = 16
},
+ [3] = { /* sx1502q */
+ .model = SX150X_123,
+ .reg_pullup = 0x02,
+ .reg_pulldn = 0x03,
+ .reg_dir = 0x01,
+ .reg_data = 0x00,
+ .reg_irq_mask = 0x05,
+ .reg_irq_src = 0x08,
+ .reg_sense = 0x07,
+ .pri.x123 = {
+ .reg_pld_mode = 0x10,
+ .reg_pld_table0 = 0x11,
+ .reg_pld_table1 = 0x12,
+ .reg_pld_table2 = 0x13,
+ .reg_pld_table3 = 0x14,
+ .reg_pld_table4 = 0x15,
+ .reg_advance = 0xad,
+ },
+ .ngpios = 8,
+ },
};
static const struct i2c_device_id sx150x_id[] = {
{"sx1508q", 0},
{"sx1509q", 1},
{"sx1506q", 2},
+ {"sx1502q", 3},
{}
};
MODULE_DEVICE_TABLE(i2c, sx150x_id);
@@ -156,6 +189,7 @@ static const struct of_device_id sx150x_of_match[] = {
{ .compatible = "semtech,sx1508q" },
{ .compatible = "semtech,sx1509q" },
{ .compatible = "semtech,sx1506q" },
+ { .compatible = "semtech,sx1502q" },
{},
};
MODULE_DEVICE_TABLE(of, sx150x_of_match);
@@ -545,10 +579,14 @@ static int sx150x_init_hw(struct sx150x_chip *chip,
err = sx150x_i2c_write(chip->client,
chip->dev_cfg->pri.x789.reg_misc,
0x01);
- else
+ else if (chip->dev_cfg->model == SX150X_456)
err = sx150x_i2c_write(chip->client,
chip->dev_cfg->pri.x456.reg_advance,
0x04);
+ else
+ err = sx150x_i2c_write(chip->client,
+ chip->dev_cfg->pri.x123.reg_advance,
+ 0x00);
if (err < 0)
return err;
@@ -574,13 +612,20 @@ static int sx150x_init_hw(struct sx150x_chip *chip,
pdata->io_polarity);
if (err < 0)
return err;
- } else {
+ } else if (chip->dev_cfg->model == SX150X_456) {
/* Set all pins to work in normal mode */
err = sx150x_init_io(chip,
chip->dev_cfg->pri.x456.reg_pld_mode,
0);
if (err < 0)
return err;
+ } else {
+ /* Set all pins to work in normal mode */
+ err = sx150x_init_io(chip,
+ chip->dev_cfg->pri.x123.reg_pld_mode,
+ 0);
+ if (err < 0)
+ return err;
}
--
2.1.4
--
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