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ar71xx: enable UART function for early_printk/console

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30909 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2012-03-12 17:32:39 +00:00
parent 875cf3ebbe
commit da951178da
4 changed files with 158 additions and 0 deletions
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18
target/linux/ar71xx/patches-3.2/520-MIPS-ath79-enable-UART-function.patch Normal file
View File

@ -0,0 +1,18 @@
--- a/arch/mips/ath79/dev-common.c
+++ b/arch/mips/ath79/dev-common.c
@@ -87,6 +87,15 @@ void __init ath79_register_uart(void)
if (IS_ERR(clk))
panic("unable to get UART clock, err=%ld", PTR_ERR(clk));
+ if (soc_is_ar71xx())
+ ath79_gpio_function_enable(AR71XX_GPIO_FUNC_UART_EN);
+ else if (soc_is_ar724x())
+ ath79_gpio_function_enable(AR724X_GPIO_FUNC_UART_EN);
+ else if (soc_is_ar913x())
+ ath79_gpio_function_enable(AR913X_GPIO_FUNC_UART_EN);
+ else if (soc_is_ar933x())
+ ath79_gpio_function_enable(AR933X_GPIO_FUNC_UART_EN);
+
if (soc_is_ar71xx() ||
soc_is_ar724x() ||
soc_is_ar913x() ||

61
target/linux/ar71xx/patches-3.2/521-MIPS-ath79-enable-UART-for-early_serial.patch Normal file
View File

@ -0,0 +1,61 @@
--- a/arch/mips/ath79/early_printk.c
+++ b/arch/mips/ath79/early_printk.c
@@ -56,6 +56,46 @@ static void prom_putchar_dummy(unsigned
/* nothing to do */
}
+static void prom_enable_uart(u32 id)
+{
+ void __iomem *gpio_base;
+ u32 uart_en;
+ u32 t;
+
+ switch (id) {
+ case REV_ID_MAJOR_AR71XX:
+ uart_en = AR71XX_GPIO_FUNC_UART_EN;
+ break;
+
+ case REV_ID_MAJOR_AR7240:
+ case REV_ID_MAJOR_AR7241:
+ case REV_ID_MAJOR_AR7242:
+ uart_en = AR724X_GPIO_FUNC_UART_EN;
+ break;
+
+ case REV_ID_MAJOR_AR913X:
+ uart_en = AR913X_GPIO_FUNC_UART_EN;
+ break;
+
+ case REV_ID_MAJOR_AR9330:
+ case REV_ID_MAJOR_AR9331:
+ uart_en = AR933X_GPIO_FUNC_UART_EN;
+ break;
+
+ case REV_ID_MAJOR_AR9341:
+ case REV_ID_MAJOR_AR9342:
+ case REV_ID_MAJOR_AR9344:
+ /* TODO */
+ default:
+ return;
+ }
+
+ gpio_base = (void __iomem *)(KSEG1ADDR(AR71XX_GPIO_BASE));
+ t = __raw_readl(gpio_base + AR71XX_GPIO_REG_FUNC);
+ t |= uart_en;
+ __raw_writel(t, gpio_base + AR71XX_GPIO_REG_FUNC);
+}
+
static void prom_putchar_init(void)
{
void __iomem *base;
@@ -84,8 +124,10 @@ static void prom_putchar_init(void)
default:
_prom_putchar = prom_putchar_dummy;
- break;
+ return;
}
+
+ prom_enable_uart(id);
}
void prom_putchar(unsigned char ch)

18
target/linux/ar71xx/patches-3.3/520-MIPS-ath79-enable-UART-function.patch Normal file
View File

@ -0,0 +1,18 @@
--- a/arch/mips/ath79/dev-common.c
+++ b/arch/mips/ath79/dev-common.c
@@ -87,6 +87,15 @@ void __init ath79_register_uart(void)
if (IS_ERR(clk))
panic("unable to get UART clock, err=%ld", PTR_ERR(clk));
+ if (soc_is_ar71xx())
+ ath79_gpio_function_enable(AR71XX_GPIO_FUNC_UART_EN);
+ else if (soc_is_ar724x())
+ ath79_gpio_function_enable(AR724X_GPIO_FUNC_UART_EN);
+ else if (soc_is_ar913x())
+ ath79_gpio_function_enable(AR913X_GPIO_FUNC_UART_EN);
+ else if (soc_is_ar933x())
+ ath79_gpio_function_enable(AR933X_GPIO_FUNC_UART_EN);
+
if (soc_is_ar71xx() ||
soc_is_ar724x() ||
soc_is_ar913x() ||

61
target/linux/ar71xx/patches-3.3/521-MIPS-ath79-enable-UART-for-early_serial.patch Normal file
View File

@ -0,0 +1,61 @@
--- a/arch/mips/ath79/early_printk.c
+++ b/arch/mips/ath79/early_printk.c
@@ -56,6 +56,46 @@ static void prom_putchar_dummy(unsigned
/* nothing to do */
}
+static void prom_enable_uart(u32 id)
+{
+ void __iomem *gpio_base;
+ u32 uart_en;
+ u32 t;
+
+ switch (id) {
+ case REV_ID_MAJOR_AR71XX:
+ uart_en = AR71XX_GPIO_FUNC_UART_EN;
+ break;
+
+ case REV_ID_MAJOR_AR7240:
+ case REV_ID_MAJOR_AR7241:
+ case REV_ID_MAJOR_AR7242:
+ uart_en = AR724X_GPIO_FUNC_UART_EN;
+ break;
+
+ case REV_ID_MAJOR_AR913X:
+ uart_en = AR913X_GPIO_FUNC_UART_EN;
+ break;
+
+ case REV_ID_MAJOR_AR9330:
+ case REV_ID_MAJOR_AR9331:
+ uart_en = AR933X_GPIO_FUNC_UART_EN;
+ break;
+
+ case REV_ID_MAJOR_AR9341:
+ case REV_ID_MAJOR_AR9342:
+ case REV_ID_MAJOR_AR9344:
+ /* TODO */
+ default:
+ return;
+ }
+
+ gpio_base = (void __iomem *)(KSEG1ADDR(AR71XX_GPIO_BASE));
+ t = __raw_readl(gpio_base + AR71XX_GPIO_REG_FUNC);
+ t |= uart_en;
+ __raw_writel(t, gpio_base + AR71XX_GPIO_REG_FUNC);
+}
+
static void prom_putchar_init(void)
{
void __iomem *base;
@@ -84,8 +124,10 @@ static void prom_putchar_init(void)
default:
_prom_putchar = prom_putchar_dummy;
- break;
+ return;
}
+
+ prom_enable_uart(id);
}
void prom_putchar(unsigned char ch)