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Message-Id: <20240117223856.2303475-15-hugo@hugovil.com>
Date: Wed, 17 Jan 2024 17:38:52 -0500
From: Hugo Villeneuve <hugo@...ovil.com>
To: gregkh@...uxfoundation.org,
jirislaby@...nel.org,
cosmin.tanislav@...log.com,
andy.shevchenko@...il.com,
shc_work@...l.ru
Cc: linux-kernel@...r.kernel.org,
linux-serial@...r.kernel.org,
hugo@...ovil.com,
Hugo Villeneuve <hvilleneuve@...onoff.com>
Subject: [PATCH 14/18] serial: max310x: use common power function for all variants
From: Hugo Villeneuve <hvilleneuve@...onoff.com>
Simplify driver by defining a common function to handle the power
control of all variants.
Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---
drivers/tty/serial/max310x.c | 44 ++++++++++++++++--------------------
1 file changed, 19 insertions(+), 25 deletions(-)
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 83beaab3a0c5..e39d8ea51e4e 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -260,11 +260,12 @@ struct max310x_devtype {
unsigned short max;
} slave_addr;
int nr;
- void (*power)(struct uart_port *, int);
char name[9];
u8 mode1;
u8 rev_id_val;
u8 rev_id_reg; /* Relevant only if rev_id_val is defined. */
+ u8 power_reg; /* Register address for power/sleep control. */
+ u8 power_bit; /* Bit for sleep or power-off mode (active high). */
};
struct max310x_one {
@@ -378,18 +379,10 @@ static int max310x_detect(struct device *dev)
static void max310x_power(struct uart_port *port, int on)
{
- max310x_port_update(port, MAX310X_MODE1_REG,
- MAX310X_MODE1_FORCESLEEP_BIT,
- on ? 0 : MAX310X_MODE1_FORCESLEEP_BIT);
- if (on)
- msleep(50);
-}
+ struct max310x_port *s = dev_get_drvdata(port->dev);
-static void max14830_power(struct uart_port *port, int on)
-{
- max310x_port_update(port, MAX310X_BRGCFG_REG,
- MAX14830_BRGCFG_CLKDIS_BIT,
- on ? 0 : MAX14830_BRGCFG_CLKDIS_BIT);
+ max310x_port_update(port, s->devtype->power_reg, s->devtype->power_bit,
+ on ? 0 : s->devtype->power_bit);
if (on)
msleep(50);
}
@@ -400,7 +393,8 @@ static const struct max310x_devtype max3107_devtype = {
.mode1 = MAX310X_MODE1_AUTOSLEEP_BIT | MAX310X_MODE1_IRQSEL_BIT,
.rev_id_val = MAX3107_REV_ID,
.rev_id_reg = MAX310X_REVID_REG,
- .power = max310x_power,
+ .power_reg = MAX310X_MODE1_REG,
+ .power_bit = MAX310X_MODE1_FORCESLEEP_BIT,
.slave_addr = {
.min = 0x2c,
.max = 0x2f,
@@ -413,7 +407,8 @@ static const struct max310x_devtype max3108_devtype = {
.mode1 = MAX310X_MODE1_AUTOSLEEP_BIT,
.rev_id_val = 0, /* Unsupported. */
.rev_id_reg = 0, /* Irrelevant when rev_id_val is not defined. */
- .power = max310x_power,
+ .power_reg = MAX310X_MODE1_REG,
+ .power_bit = MAX310X_MODE1_FORCESLEEP_BIT,
.slave_addr = {
.min = 0x60,
.max = 0x6f,
@@ -426,7 +421,8 @@ static const struct max310x_devtype max3109_devtype = {
.mode1 = MAX310X_MODE1_AUTOSLEEP_BIT,
.rev_id_val = MAX3109_REV_ID,
.rev_id_reg = MAX310X_REVID_EXTREG,
- .power = max310x_power,
+ .power_reg = MAX310X_MODE1_REG,
+ .power_bit = MAX310X_MODE1_FORCESLEEP_BIT,
.slave_addr = {
.min = 0x60,
.max = 0x6f,
@@ -439,7 +435,8 @@ static const struct max310x_devtype max14830_devtype = {
.mode1 = MAX310X_MODE1_IRQSEL_BIT,
.rev_id_val = MAX14830_REV_ID,
.rev_id_reg = MAX310X_REVID_EXTREG,
- .power = max14830_power,
+ .power_reg = MAX310X_BRGCFG_REG,
+ .power_bit = MAX14830_BRGCFG_CLKDIS_BIT,
.slave_addr = {
.min = 0x60,
.max = 0x6f,
@@ -1025,10 +1022,9 @@ static int max310x_rs485_config(struct uart_port *port, struct ktermios *termios
static int max310x_startup(struct uart_port *port)
{
- struct max310x_port *s = dev_get_drvdata(port->dev);
unsigned int val;
- s->devtype->power(port, 1);
+ max310x_power(port, 1);
/* Configure MODE1 register */
max310x_port_update(port, MAX310X_MODE1_REG,
@@ -1073,12 +1069,10 @@ static int max310x_startup(struct uart_port *port)
static void max310x_shutdown(struct uart_port *port)
{
- struct max310x_port *s = dev_get_drvdata(port->dev);
-
/* Disable all interrupts */
max310x_port_write(port, MAX310X_IRQEN_REG, 0);
- s->devtype->power(port, 0);
+ max310x_power(port, 0);
}
static const char *max310x_type(struct uart_port *port)
@@ -1140,7 +1134,7 @@ static int __maybe_unused max310x_suspend(struct device *dev)
for (i = 0; i < s->devtype->nr; i++) {
uart_suspend_port(&max310x_uart, &s->p[i].port);
- s->devtype->power(&s->p[i].port, 0);
+ max310x_power(&s->p[i].port, 0);
}
return 0;
@@ -1152,7 +1146,7 @@ static int __maybe_unused max310x_resume(struct device *dev)
int i;
for (i = 0; i < s->devtype->nr; i++) {
- s->devtype->power(&s->p[i].port, 1);
+ max310x_power(&s->p[i].port, 1);
uart_resume_port(&max310x_uart, &s->p[i].port);
}
@@ -1367,7 +1361,7 @@ static int max310x_probe(struct device *dev, const struct max310x_devtype *devty
set_bit(line, max310x_lines);
/* Go to suspend mode */
- devtype->power(&s->p[i].port, 0);
+ max310x_power(&s->p[i].port, 0);
}
#ifdef CONFIG_GPIOLIB
@@ -1421,7 +1415,7 @@ static void max310x_remove(struct device *dev)
if (test_and_clear_bit(s->p[i].port.line, max310x_lines))
uart_remove_one_port(&max310x_uart, &s->p[i].port);
- s->devtype->power(&s->p[i].port, 0);
+ max310x_power(&s->p[i].port, 0);
}
clk_disable_unprepare(s->clk);
--
2.39.2
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