disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/tty/serial/lpc32xx_hs.c
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@@ -23,10 +23,9 @@
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 #include <linux/nmi.h>
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 #include <linux/io.h>
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 #include <linux/irq.h>
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-#include <linux/gpio.h>
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 #include <linux/of.h>
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-#include <mach/platform.h>
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-#include <mach/hardware.h>
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+#include <linux/sizes.h>
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+#include <linux/soc/nxp/lpc32xx-misc.h>
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 /*
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  * High Speed UART register offsets
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@@ -80,6 +79,8 @@
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 #define LPC32XX_HSU_TX_TL4B			(0x1 << 0)
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 #define LPC32XX_HSU_TX_TL8B			(0x2 << 0)
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 #define LPC32XX_HSU_TX_TL16B			(0x3 << 0)
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+
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+#define LPC32XX_MAIN_OSC_FREQ			13000000
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 #define MODNAME "lpc32xx_hsuart"
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@@ -169,6 +170,8 @@
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 	if (options)
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 		uart_parse_options(options, &baud, &parity, &bits, &flow);
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+
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+	lpc32xx_loopback_set(port->mapbase, 0); /* get out of loopback mode */
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 	return uart_set_options(port, co, baud, parity, bits, flow);
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 }
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@@ -341,7 +344,7 @@
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 		       LPC32XX_HSUART_IIR(port->membase));
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 		port->icount.overrun++;
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 		tty_insert_flip_char(tport, 0, TTY_OVERRUN);
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-		tty_schedule_flip(tport);
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+		tty_flip_buffer_push(tport);
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 	}
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 	/* Data received? */
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@@ -433,35 +436,6 @@
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 		tmp &= ~LPC32XX_HSU_BREAK;
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 	writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
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 	spin_unlock_irqrestore(&port->lock, flags);
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-}
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-
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-/* LPC3250 Errata HSUART.1: Hang workaround via loopback mode on inactivity */
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-static void lpc32xx_loopback_set(resource_size_t mapbase, int state)
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-{
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-	int bit;
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-	u32 tmp;
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-
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-	switch (mapbase) {
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-	case LPC32XX_HS_UART1_BASE:
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-		bit = 0;
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-		break;
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-	case LPC32XX_HS_UART2_BASE:
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-		bit = 1;
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-		break;
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-	case LPC32XX_HS_UART7_BASE:
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-		bit = 6;
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-		break;
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-	default:
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-		WARN(1, "lpc32xx_hs: Warning: Unknown port at %08x\n", mapbase);
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-		return;
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-	}
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-
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-	tmp = readl(LPC32XX_UARTCTL_CLOOP);
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-	if (state)
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-		tmp |= (1 << bit);
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-	else
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-		tmp &= ~(1 << bit);
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-	writel(tmp, LPC32XX_UARTCTL_CLOOP);
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 }
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 /* port->lock is not held.  */
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@@ -683,11 +657,8 @@
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 	p->port.membase = NULL;
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 	ret = platform_get_irq(pdev, 0);
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-	if (ret < 0) {
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-		dev_err(&pdev->dev, "Error getting irq for HS UART port %d\n",
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-			uarts_registered);
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+	if (ret < 0)
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 		return ret;
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-	}
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 	p->port.irq = ret;
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 	p->port.iotype = UPIO_MEM32;