| Graff Yang | d510fe7 | 2009-05-12 13:47:54 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Blackfin Infra-red Driver |
| 3 | * |
| 4 | * Copyright 2006-2009 Analog Devices Inc. |
| 5 | * |
| 6 | * Enter bugs at http://blackfin.uclinux.org/ |
| 7 | * |
| 8 | * Licensed under the GPL-2 or later. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <linux/serial.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/netdevice.h> |
| 15 | #include <linux/interrupt.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/dma-mapping.h> |
| Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 19 | #include <linux/slab.h> |
| Graff Yang | d510fe7 | 2009-05-12 13:47:54 -0700 | [diff] [blame] | 20 | |
| 21 | #include <net/irda/irda.h> |
| 22 | #include <net/irda/wrapper.h> |
| 23 | #include <net/irda/irda_device.h> |
| 24 | |
| 25 | #include <asm/irq.h> |
| 26 | #include <asm/cacheflush.h> |
| 27 | #include <asm/dma.h> |
| 28 | #include <asm/portmux.h> |
| Mike Frysinger | 709465d | 2010-10-28 15:43:50 -0400 | [diff] [blame] | 29 | #undef DRIVER_NAME |
| Graff Yang | d510fe7 | 2009-05-12 13:47:54 -0700 | [diff] [blame] | 30 | |
| 31 | #ifdef CONFIG_SIR_BFIN_DMA |
| 32 | struct dma_rx_buf { |
| 33 | char *buf; |
| 34 | int head; |
| 35 | int tail; |
| 36 | }; |
| 37 | #endif |
| 38 | |
| 39 | struct bfin_sir_port { |
| 40 | unsigned char __iomem *membase; |
| 41 | unsigned int irq; |
| 42 | unsigned int lsr; |
| 43 | unsigned long clk; |
| 44 | struct net_device *dev; |
| 45 | #ifdef CONFIG_SIR_BFIN_DMA |
| 46 | int tx_done; |
| 47 | struct dma_rx_buf rx_dma_buf; |
| 48 | struct timer_list rx_dma_timer; |
| 49 | int rx_dma_nrows; |
| 50 | #endif |
| 51 | unsigned int tx_dma_channel; |
| 52 | unsigned int rx_dma_channel; |
| 53 | }; |
| 54 | |
| 55 | struct bfin_sir_port_res { |
| 56 | unsigned long base_addr; |
| 57 | int irq; |
| 58 | unsigned int rx_dma_channel; |
| 59 | unsigned int tx_dma_channel; |
| 60 | }; |
| 61 | |
| 62 | struct bfin_sir_self { |
| 63 | struct bfin_sir_port *sir_port; |
| 64 | spinlock_t lock; |
| 65 | unsigned int open; |
| 66 | int speed; |
| 67 | int newspeed; |
| 68 | |
| 69 | struct sk_buff *txskb; |
| 70 | struct sk_buff *rxskb; |
| 71 | struct net_device_stats stats; |
| 72 | struct device *dev; |
| 73 | struct irlap_cb *irlap; |
| 74 | struct qos_info qos; |
| 75 | |
| 76 | iobuff_t tx_buff; |
| 77 | iobuff_t rx_buff; |
| 78 | |
| 79 | struct work_struct work; |
| 80 | int mtt; |
| 81 | }; |
| 82 | |
| 83 | #define DRIVER_NAME "bfin_sir" |
| 84 | |
| Mike Frysinger | 229de61 | 2011-05-23 12:17:09 +0000 | [diff] [blame] | 85 | #include <asm/bfin_serial.h> |
| Graff Yang | d510fe7 | 2009-05-12 13:47:54 -0700 | [diff] [blame] | 86 | |
| 87 | static const unsigned short per[][4] = { |
| 88 | /* rx pin tx pin NULL uart_number */ |
| 89 | {P_UART0_RX, P_UART0_TX, 0, 0}, |
| 90 | {P_UART1_RX, P_UART1_TX, 0, 1}, |
| 91 | {P_UART2_RX, P_UART2_TX, 0, 2}, |
| 92 | {P_UART3_RX, P_UART3_TX, 0, 3}, |
| 93 | }; |