[U-Boot] [PATCH v5 3/5] mips: ath79: add serial driver for ar933x SOC

[Thomas Chou <thomas@wytron.com.tw>]

Hi Wills,

On 2015?12?29? 19:17, Wills Wang wrote:

 > +DECLARE_GLOBAL_DATA_PTR;

The gd is not used in this patch. It can be removed.

> +static int ar933x_serial_putc(struct udevice *dev, const char c)
> +{
> +	u32 data;
> +

> +	do {
> +		data = ar933x_serial_read(dev, AR933X_UART_DATA_REG);
> +	} while (!(data & AR933X_UART_DATA_TX_CSR));

	data = ar933x_serial_read(dev, AR933X_UART_DATA_REG);
	if (!(data & AR933X_UART_DATA_TX_CSR))
		return -EAGAIN;

> +
> +	data  = (u32)c | AR933X_UART_DATA_TX_CSR;
> +	ar933x_serial_write(dev, data, AR933X_UART_DATA_REG);
> +
> +	return 0;
> +}
> +
> +static int ar933x_serial_getc(struct udevice *dev)
> +{
> +	u32 data;
> +

> +	do {
> +		data = ar933x_serial_read(dev, AR933X_UART_DATA_REG);
> +	} while (!(data & AR933X_UART_DATA_RX_CSR));

	data = ar933x_serial_read(dev, AR933X_UART_DATA_REG);
	if (!(data & AR933X_UART_DATA_RX_CSR))
		return -EAGAIN;

> +
> +	data = ar933x_serial_read(dev, AR933X_UART_DATA_REG);
> +	ar933x_serial_write(dev, AR933X_UART_DATA_RX_CSR,
> +			    AR933X_UART_DATA_REG);
> +	return data & AR933X_UART_DATA_TX_RX_MASK;
> +}
> +

 > +static int ar933x_serial_probe(struct udevice *dev)
 > +{
 > +	struct ar933x_serial_priv *priv = dev_get_priv(dev);
 > +	u32 val;
 > +
 > +	fdt_addr_t addr;

Why extra blank line above "fdt_addr_t addr;"?

=========================

checkpatch.pl,

WARNING: Missing a blank line after declarations
#206: FILE: drivers/serial/serial_ar933x.c:45:
+	struct ar933x_serial_priv *priv = dev_get_priv(dev);
+	return readl(priv->regs + offset);

CHECK: Alignment should match open parenthesis
#210: FILE: drivers/serial/serial_ar933x.c:49:
+static inline void ar933x_serial_write(struct udevice *dev,
+					u32 val, u32 offset)

WARNING: Missing a blank line after declarations
#213: FILE: drivers/serial/serial_ar933x.c:52:
+	struct ar933x_serial_priv *priv = dev_get_priv(dev);
+	writel(val, priv->regs + offset);

CHECK: Alignment should match open parenthesis
#234: FILE: drivers/serial/serial_ar933x.c:73:
+static void ar933x_serial_get_scale_step(u32 clk, u32 baud,
+				       u32 *scale, u32 *step)

CHECK: Please don't use multiple blank lines
#393: FILE: drivers/serial/serial_ar933x.c:232:
+
+

Thanks.

Regards,
Thomas