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Diffstat (limited to 'arch/blackfin/mach-bf537/include/mach/bfin_sir.h')
-rw-r--r--arch/blackfin/mach-bf537/include/mach/bfin_sir.h142
1 files changed, 142 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf537/include/mach/bfin_sir.h b/arch/blackfin/mach-bf537/include/mach/bfin_sir.h
new file mode 100644
index 00000000000..cfd8ad4f1f2
--- /dev/null
+++ b/arch/blackfin/mach-bf537/include/mach/bfin_sir.h
@@ -0,0 +1,142 @@
+/*
+ * Blackfin Infra-red Driver
+ *
+ * Copyright 2006-2008 Analog Devices Inc.
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Licensed under the GPL-2 or later.
+ *
+ */
+
+#include <linux/serial.h>
+#include <asm/dma.h>
+#include <asm/portmux.h>
+
+#define SIR_UART_GET_CHAR(port) bfin_read16((port)->membase + OFFSET_RBR)
+#define SIR_UART_GET_DLL(port) bfin_read16((port)->membase + OFFSET_DLL)
+#define SIR_UART_GET_IER(port) bfin_read16((port)->membase + OFFSET_IER)
+#define SIR_UART_GET_DLH(port) bfin_read16((port)->membase + OFFSET_DLH)
+#define SIR_UART_GET_IIR(port) bfin_read16((port)->membase + OFFSET_IIR)
+#define SIR_UART_GET_LCR(port) bfin_read16((port)->membase + OFFSET_LCR)
+#define SIR_UART_GET_GCTL(port) bfin_read16((port)->membase + OFFSET_GCTL)
+
+#define SIR_UART_PUT_CHAR(port, v) bfin_write16(((port)->membase + OFFSET_THR), v)
+#define SIR_UART_PUT_DLL(port, v) bfin_write16(((port)->membase + OFFSET_DLL), v)
+#define SIR_UART_PUT_IER(port, v) bfin_write16(((port)->membase + OFFSET_IER), v)
+#define SIR_UART_PUT_DLH(port, v) bfin_write16(((port)->membase + OFFSET_DLH), v)
+#define SIR_UART_PUT_LCR(port, v) bfin_write16(((port)->membase + OFFSET_LCR), v)
+#define SIR_UART_PUT_GCTL(port, v) bfin_write16(((port)->membase + OFFSET_GCTL), v)
+
+#ifdef CONFIG_SIR_BFIN_DMA
+struct dma_rx_buf {
+ char *buf;
+ int head;
+ int tail;
+ };
+#endif /* CONFIG_SIR_BFIN_DMA */
+
+struct bfin_sir_port {
+ unsigned char __iomem *membase;
+ unsigned int irq;
+ unsigned int lsr;
+ unsigned long clk;
+ struct net_device *dev;
+#ifdef CONFIG_SIR_BFIN_DMA
+ int tx_done;
+ struct dma_rx_buf rx_dma_buf;
+ struct timer_list rx_dma_timer;
+ int rx_dma_nrows;
+#endif /* CONFIG_SIR_BFIN_DMA */
+ unsigned int tx_dma_channel;
+ unsigned int rx_dma_channel;
+};
+
+struct bfin_sir_port sir_ports[BFIN_UART_NR_PORTS];
+
+struct bfin_sir_port_res {
+ unsigned long base_addr;
+ int irq;
+ unsigned int rx_dma_channel;
+ unsigned int tx_dma_channel;
+};
+
+struct bfin_sir_port_res bfin_sir_port_resource[] = {
+#ifdef CONFIG_BFIN_SIR0
+ {
+ 0xFFC00400,
+ IRQ_UART0_RX,
+ CH_UART0_RX,
+ CH_UART0_TX,
+ },
+#endif
+#ifdef CONFIG_BFIN_SIR1
+ {
+ 0xFFC02000,
+ IRQ_UART1_RX,
+ CH_UART1_RX,
+ CH_UART1_TX,
+ },
+#endif
+};
+
+int nr_sirs = ARRAY_SIZE(bfin_sir_port_resource);
+
+struct bfin_sir_self {
+ struct bfin_sir_port *sir_port;
+ spinlock_t lock;
+ unsigned int open;
+ int speed;
+ int newspeed;
+
+ struct sk_buff *txskb;
+ struct sk_buff *rxskb;
+ struct net_device_stats stats;
+ struct device *dev;
+ struct irlap_cb *irlap;
+ struct qos_info qos;
+
+ iobuff_t tx_buff;
+ iobuff_t rx_buff;
+
+ struct work_struct work;
+ int mtt;
+};
+
+static inline unsigned int SIR_UART_GET_LSR(struct bfin_sir_port *port)
+{
+ unsigned int lsr = bfin_read16(port->membase + OFFSET_LSR);
+ port->lsr |= (lsr & (BI|FE|PE|OE));
+ return lsr | port->lsr;
+}
+
+static inline void SIR_UART_CLEAR_LSR(struct bfin_sir_port *port)
+{
+ port->lsr = 0;
+ bfin_read16(port->membase + OFFSET_LSR);
+}
+
+#define DRIVER_NAME "bfin_sir"
+
+static int bfin_sir_hw_init(void)
+{
+ int ret = -ENODEV;
+#ifdef CONFIG_BFIN_SIR0
+ ret = peripheral_request(P_UART0_TX, DRIVER_NAME);
+ if (ret)
+ return ret;
+ ret = peripheral_request(P_UART0_RX, DRIVER_NAME);
+ if (ret)
+ return ret;
+#endif
+
+#ifdef CONFIG_BFIN_SIR1
+ ret = peripheral_request(P_UART1_TX, DRIVER_NAME);
+ if (ret)
+ return ret;
+ ret = peripheral_request(P_UART1_RX, DRIVER_NAME);
+ if (ret)
+ return ret;
+#endif
+ return ret;
+}