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91 lines
2.6 KiB
Diff
91 lines
2.6 KiB
Diff
From 3b11721314a100e40634a80062d0d2cce1dc83dc Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Fri, 3 Aug 2012 09:54:27 +0200
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Subject: [PATCH 12/25] tty support
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---
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drivers/tty/serial/lantiq.c | 25 +++++++++++++++++++++----
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1 files changed, 21 insertions(+), 4 deletions(-)
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diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
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index 96c1cac..82956de 100644
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--- a/drivers/tty/serial/lantiq.c
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+++ b/drivers/tty/serial/lantiq.c
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@@ -107,6 +107,9 @@
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#define ASCFSTAT_TXFREEMASK 0x3F000000
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#define ASCFSTAT_TXFREEOFF 24
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+#define MUXC_SIF_RX_PIN 112
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+#define MUXC_SIF_TX_PIN 113
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+
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static void lqasc_tx_chars(struct uart_port *port);
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static struct ltq_uart_port *lqasc_port[MAXPORTS];
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static struct uart_driver lqasc_reg;
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@@ -114,6 +117,7 @@ static DEFINE_SPINLOCK(ltq_asc_lock);
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struct ltq_uart_port {
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struct uart_port port;
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+ struct clk *fpiclk;
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struct clk *clk;
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unsigned int tx_irq;
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unsigned int rx_irq;
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@@ -316,7 +320,7 @@ lqasc_startup(struct uart_port *port)
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struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);
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int retval;
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- port->uartclk = clk_get_rate(ltq_port->clk);
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+ port->uartclk = clk_get_rate(ltq_port->fpiclk);
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ltq_w32_mask(ASCCLC_DISS | ASCCLC_RMCMASK, (1 << ASCCLC_RMCOFFSET),
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port->membase + LTQ_ASC_CLC);
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@@ -529,6 +533,19 @@ lqasc_request_port(struct uart_port *port)
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if (port->membase == NULL)
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return -ENOMEM;
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}
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+ if (ltq_is_falcon() && (port->line == 1)) {
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+ struct ltq_uart_port *ltq_port = lqasc_port[pdev->id];
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+ if (ltq_gpio_request(&pdev->dev, MUXC_SIF_RX_PIN,
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+ 3, 0, "asc1-rx"))
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+ return -EBUSY;
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+ if (ltq_gpio_request(&pdev->dev, MUXC_SIF_TX_PIN,
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+ 3, 1, "asc1-tx"))
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+ return -EBUSY;
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+ ltq_port->clk = clk_get(&pdev->dev, NULL);
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+ if (IS_ERR(ltq_port->clk))
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+ return PTR_ERR(ltq_port->clk);
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+ clk_enable(ltq_port->clk);
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+ }
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return 0;
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}
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@@ -630,7 +647,7 @@ lqasc_console_setup(struct console *co, char *options)
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port = <q_port->port;
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- port->uartclk = clk_get_rate(ltq_port->clk);
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+ port->uartclk = clk_get_rate(ltq_port->fpiclk);
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if (options)
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uart_parse_options(options, &baud, &parity, &bits, &flow);
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@@ -686,7 +703,7 @@ lqasc_probe(struct platform_device *pdev)
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if (lqasc_port[pdev->id] != NULL)
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return -EBUSY;
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- clk = clk_get(&pdev->dev, "fpi");
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+ clk = clk_get_fpi();
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if (IS_ERR(clk)) {
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pr_err("failed to get fpi clk\n");
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return -ENOENT;
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@@ -715,7 +732,7 @@ lqasc_probe(struct platform_device *pdev)
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port->irq = tx_irq; /* unused, just to be backward-compatibe */
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port->mapbase = mmres->start;
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- ltq_port->clk = clk;
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+ ltq_port->fpiclk = clk;
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ltq_port->tx_irq = tx_irq;
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ltq_port->rx_irq = rx_irq;
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--
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1.7.9.1
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