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Subject[PATCH 5/9] serial/arc: remove earlyprintk support and switch to earlycon
Date
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
arch/arc/boot/dts/angel4.dts | 2 +-
drivers/tty/serial/arc_uart.c | 87 ++++++-------------------------------------
2 files changed, 13 insertions(+), 76 deletions(-)

diff --git a/arch/arc/boot/dts/angel4.dts b/arch/arc/boot/dts/angel4.dts
index 5bb2fdaca02f..6b57475967a6 100644
--- a/arch/arc/boot/dts/angel4.dts
+++ b/arch/arc/boot/dts/angel4.dts
@@ -17,7 +17,7 @@
interrupt-parent = <&intc>;

chosen {
- bootargs = "console=ttyARC0,115200n8 earlyprintk=ttyARC0";
+ bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8";
};

aliases {
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index 0c8ba5bb97c7..2ffaf099691a 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -500,33 +500,23 @@ static int
arc_uart_init_one(struct platform_device *pdev, int dev_id)
{
struct resource *res, *res2;
- unsigned long *plat_data;
struct arc_uart_port *uart = &arc_uart_ports[dev_id];
struct uart_port *port = &uart->port;

- plat_data = dev_get_platdata(&pdev->dev);
- if (!plat_data)
- return -ENODEV;
+ struct device_node *np = pdev->dev.of_node;
+ u32 val;

- if (is_early_platform_device(pdev)) {
- port->uartclk = plat_data[1];
- uart->baud = plat_data[2];
- } else {
- struct device_node *np = pdev->dev.of_node;
- u32 val;
-
- if (of_property_read_u32(np, "clock-frequency", &val)) {
- dev_err(&pdev->dev, "clock-frequency property NOTset\n");
- return -EINVAL;
- }
- port->uartclk = val;
-
- if (of_property_read_u32(np, "current-speed", &val)) {
- dev_err(&pdev->dev, "current-speed property NOT set\n");
- return -EINVAL;
- }
- uart->baud = val;
+ if (of_property_read_u32(np, "clock-frequency", &val)) {
+ dev_err(&pdev->dev, "clock-frequency property NOTset\n");
+ return -EINVAL;
}
+ port->uartclk = val;
+
+ if (of_property_read_u32(np, "current-speed", &val)) {
+ dev_err(&pdev->dev, "current-speed property NOT set\n");
+ return -EINVAL;
+ }
+ uart->baud = val;

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
@@ -615,38 +605,6 @@ static struct console arc_console = {
.data = &arc_uart_driver
};

-static __init void early_serial_write(struct console *con, const char *s,
- unsigned int n)
-{
- struct uart_port *port = &arc_uart_ports[con->index].port;
-
- uart_console_write(port, s, n, arc_serial_poll_putchar);
-}
-
-static struct console arc_early_serial_console __initdata = {
- .name = "early_ARCuart",
- .write = early_serial_write,
- .flags = CON_PRINTBUFFER | CON_BOOT,
- .index = -1
-};
-
-static int __init arc_serial_probe_earlyprintk(struct platform_device *pdev)
-{
- int dev_id = pdev->id < 0 ? 0 : pdev->id;
- int rc;
-
- arc_early_serial_console.index = dev_id;
-
- rc = arc_uart_init_one(pdev, dev_id);
- if (rc)
- panic("early console init failed\n");
-
- arc_serial_console_setup(&arc_early_serial_console, NULL);
-
- register_console(&arc_early_serial_console);
- return 0;
-}
-
static __init void arc_early_serial_write(struct console *con, const char *s,
unsigned int n)
{
@@ -721,27 +679,6 @@ static struct platform_driver arc_platform_driver = {
},
};

-#ifdef CONFIG_SERIAL_ARC_CONSOLE
-
-static struct platform_driver early_arc_platform_driver __initdata = {
- .probe = arc_serial_probe_earlyprintk,
- .remove = arc_serial_remove,
- .driver = {
- .name = DRIVER_NAME,
- .owner = THIS_MODULE,
- },
-};
-/*
- * Register an early platform driver of "earlyprintk" class.
- * ARCH platform code installs the driver and probes the early devices
- * The installation could rely on user specifying earlyprintk=xyx in cmd line
- * or it could be done independently, for all "earlyprintk" class drivers.
- * [see arch/arc/plat-arcfpga/platform.c]
- */
-early_platform_init("earlyprintk", &early_arc_platform_driver);
-
-#endif /* CONFIG_SERIAL_ARC_CONSOLE */
-
static int __init arc_serial_init(void)
{
int ret;
--
1.8.3.2


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