gpio: am43xx: expand gpio support

[karo-tx-uboot.git] / drivers / serial / serial_s5p.c

diff --git a/drivers/serial/serial_s5p.c b/drivers/serial/serial_s5p.c
index 8469afdaae9da8d18e046218a354eb789b87ddd5..21cb566c2906cb01d9dd911c3581bd9458122359 100644 (file)
--- a/drivers/serial/serial_s5p.c
+++ b/drivers/serial/serial_s5p.c
@@ -14,8 +14,8 @@
 #include <fdtdec.h>
 #include <linux/compiler.h>
 #include <asm/io.h>
-#include <asm/arch/uart.h>
 #include <asm/arch/clk.h>
+#include <asm/arch/uart.h>
 #include <serial.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -59,11 +59,20 @@ static const int udivslot[] = {
        0xffdf,
 };
 
-int s5p_serial_setbrg(struct udevice *dev, int baudrate)
+static void __maybe_unused s5p_serial_init(struct s5p_uart *uart)
+{
+       /* enable FIFOs, auto clear Rx FIFO */
+       writel(0x3, &uart->ufcon);
+       writel(0, &uart->umcon);
+       /* 8N1 */
+       writel(0x3, &uart->ulcon);
+       /* No interrupts, no DMA, pure polling */
+       writel(0x245, &uart->ucon);
+}
+
+static void __maybe_unused s5p_serial_baud(struct s5p_uart *uart, uint uclk,
+                                          int baudrate)
 {
-       struct s5p_serial_platdata *plat = dev->platdata;
-       struct s5p_uart *const uart = plat->reg;
-       u32 uclk = get_uart_clk(plat->port_id);
        u32 val;
 
        val = uclk / baudrate;
@@ -74,6 +83,16 @@ int s5p_serial_setbrg(struct udevice *dev, int baudrate)
                writew(udivslot[val % 16], &uart->rest.slot);
        else
                writeb(val % 16, &uart->rest.value);
+}
+
+#ifndef CONFIG_SPL_BUILD
+int s5p_serial_setbrg(struct udevice *dev, int baudrate)
+{
+       struct s5p_serial_platdata *plat = dev->platdata;
+       struct s5p_uart *const uart = plat->reg;
+       u32 uclk = get_uart_clk(plat->port_id);
+
+       s5p_serial_baud(uart, uclk, baudrate);
 
        return 0;
 }
@@ -83,13 +102,7 @@ static int s5p_serial_probe(struct udevice *dev)
        struct s5p_serial_platdata *plat = dev->platdata;
        struct s5p_uart *const uart = plat->reg;
 
-       /* enable FIFOs, auto clear Rx FIFO */
-       writel(0x3, &uart->ufcon);
-       writel(0, &uart->umcon);
-       /* 8N1 */
-       writel(0x3, &uart->ulcon);
-       /* No interrupts, no DMA, pure polling */
-       writel(0x245, &uart->ucon);
+       s5p_serial_init(uart);
 
        return 0;
 }
@@ -188,3 +201,29 @@ U_BOOT_DRIVER(serial_s5p) = {
        .ops    = &s5p_serial_ops,
        .flags = DM_FLAG_PRE_RELOC,
 };
+#endif
+
+#ifdef CONFIG_DEBUG_UART_S5P
+
+#include <debug_uart.h>
+
+void debug_uart_init(void)
+{
+       struct s5p_uart *uart = (struct s5p_uart *)CONFIG_DEBUG_UART_BASE;
+
+       s5p_serial_init(uart);
+       s5p_serial_baud(uart, CONFIG_DEBUG_UART_CLOCK, CONFIG_BAUDRATE);
+}
+
+static inline void _debug_uart_putc(int ch)
+{
+       struct s5p_uart *uart = (struct s5p_uart *)CONFIG_DEBUG_UART_BASE;
+
+       while (readl(&uart->ufstat) & TX_FIFO_FULL);
+
+       writeb(ch, &uart->utxh);
+}
+
+DEBUG_UART_FUNCS
+
+#endif