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@@ -0,0 +1,149 @@
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+/*
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+ * Blackfin Infra-red Driver
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+ *
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+ * Copyright 2006-2008 Analog Devices Inc.
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+ *
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+ * Enter bugs at http://blackfin.uclinux.org/
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+ *
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+ * Licensed under the GPL-2 or later.
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+ *
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+ */
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+
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+#include <linux/serial.h>
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+#include <asm/dma.h>
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+#include <asm/portmux.h>
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+
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+#define SIR_UART_GET_CHAR(port) bfin_read16((port)->membase + OFFSET_RBR)
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+#define SIR_UART_GET_DLL(port) bfin_read16((port)->membase + OFFSET_DLL)
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+#define SIR_UART_GET_IER(port) bfin_read16((port)->membase + OFFSET_IER_SET)
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+#define SIR_UART_GET_DLH(port) bfin_read16((port)->membase + OFFSET_DLH)
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+#define SIR_UART_GET_LCR(port) bfin_read16((port)->membase + OFFSET_LCR)
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+#define SIR_UART_GET_LSR(port) bfin_read16((port)->membase + OFFSET_LSR)
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+#define SIR_UART_GET_GCTL(port) bfin_read16((port)->membase + OFFSET_GCTL)
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+
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+#define SIR_UART_PUT_CHAR(port, v) bfin_write16(((port)->membase + OFFSET_THR), v)
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+#define SIR_UART_PUT_DLL(port, v) bfin_write16(((port)->membase + OFFSET_DLL), v)
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+#define SIR_UART_SET_IER(port, v) bfin_write16(((port)->membase + OFFSET_IER_SET), v)
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+#define SIR_UART_CLEAR_IER(port, v) bfin_write16(((port)->membase + OFFSET_IER_CLEAR), v)
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+#define SIR_UART_PUT_DLH(port, v) bfin_write16(((port)->membase + OFFSET_DLH), v)
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+#define SIR_UART_PUT_LSR(port, v) bfin_write16(((port)->membase + OFFSET_LSR), v)
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+#define SIR_UART_PUT_LCR(port, v) bfin_write16(((port)->membase + OFFSET_LCR), v)
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+#define SIR_UART_CLEAR_LSR(port) bfin_write16(((port)->membase + OFFSET_LSR), -1)
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+#define SIR_UART_PUT_GCTL(port, v) bfin_write16(((port)->membase + OFFSET_GCTL), v)
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+
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+#ifdef CONFIG_SIR_BFIN_DMA
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+struct dma_rx_buf {
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+ char *buf;
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+ int head;
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+ int tail;
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+ };
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+#endif /* CONFIG_SIR_BFIN_DMA */
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+
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+struct bfin_sir_port {
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+ unsigned char __iomem *membase;
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+ unsigned int irq;
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+ unsigned int lsr;
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+ unsigned long clk;
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+ struct net_device *dev;
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+#ifdef CONFIG_SIR_BFIN_DMA
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+ int tx_done;
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+ struct dma_rx_buf rx_dma_buf;
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+ struct timer_list rx_dma_timer;
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+ int rx_dma_nrows;
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+#endif /* CONFIG_SIR_BFIN_DMA */
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+ unsigned int tx_dma_channel;
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+ unsigned int rx_dma_channel;
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+};
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+
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+struct bfin_sir_port sir_ports[BFIN_UART_NR_PORTS];
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+
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+struct bfin_sir_port_res {
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+ unsigned long base_addr;
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+ int irq;
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+ unsigned int rx_dma_channel;
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+ unsigned int tx_dma_channel;
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+};
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+
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+struct bfin_sir_port_res bfin_sir_port_resource[] = {
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+#ifdef CONFIG_BFIN_SIR0
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+ {
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+ 0xFFC00400,
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+ IRQ_UART0_RX,
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+ CH_UART0_RX,
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+ CH_UART0_TX,
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+ },
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+#endif
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+#ifdef CONFIG_BFIN_SIR1
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+ {
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+ 0xFFC02000,
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+ IRQ_UART1_RX,
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+ CH_UART1_RX,
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+ CH_UART1_TX,
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+ },
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+#endif
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+#ifdef CONFIG_BFIN_SIR2
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+ {
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+ 0xFFC02100,
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+ IRQ_UART2_RX,
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+ CH_UART2_RX,
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+ CH_UART2_TX,
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+ },
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+#endif
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+#ifdef CONFIG_BFIN_SIR3
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+ {
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+ 0xFFC03100,
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+ IRQ_UART3_RX,
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+ CH_UART3_RX,
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+ CH_UART3_TX,
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+ },
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+#endif
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+};
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+
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+int nr_sirs = ARRAY_SIZE(bfin_sir_port_resource);
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+
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+struct bfin_sir_self {
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+ struct bfin_sir_port *sir_port;
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+ spinlock_t lock;
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+ unsigned int open;
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+ int speed;
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+ int newspeed;
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+
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+ struct sk_buff *txskb;
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+ struct sk_buff *rxskb;
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+ struct net_device_stats stats;
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+ struct device *dev;
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+ struct irlap_cb *irlap;
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+ struct qos_info qos;
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+
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+ iobuff_t tx_buff;
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+ iobuff_t rx_buff;
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+
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+ struct work_struct work;
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+ int mtt;
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+};
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+
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+#define DRIVER_NAME "bfin_sir"
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+
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+static void bfin_sir_hw_init(void)
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+{
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+#ifdef CONFIG_BFIN_SIR0
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+ peripheral_request(P_UART0_TX, DRIVER_NAME);
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+ peripheral_request(P_UART0_RX, DRIVER_NAME);
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+#endif
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+
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+#ifdef CONFIG_BFIN_SIR1
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+ peripheral_request(P_UART1_TX, DRIVER_NAME);
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+ peripheral_request(P_UART1_RX, DRIVER_NAME);
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+#endif
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+
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+#ifdef CONFIG_BFIN_SIR2
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+ peripheral_request(P_UART2_TX, DRIVER_NAME);
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+ peripheral_request(P_UART2_RX, DRIVER_NAME);
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+#endif
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+
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+#ifdef CONFIG_BFIN_SIR3
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+ peripheral_request(P_UART3_TX, DRIVER_NAME);
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+ peripheral_request(P_UART3_RX, DRIVER_NAME);
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+#endif
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+ SSYNC();
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+}
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