projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 99edb3d1 | 1 | /* |
| b497549a BD |
2 | * Driver for Samsung SoC onboard UARTs. |
| 3 | * | |
| ccae941e | 4 | * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics |
| b497549a BD |
5 | * http://armlinux.simtec.co.uk/ |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License version 2 as | |
| 9 | * published by the Free Software Foundation. | |
| 10 | */ | |
| 11 | ||
| 12 | struct s3c24xx_uart_info { | |
| 13 | char *name; | |
| 14 | unsigned int type; | |
| 15 | unsigned int fifosize; | |
| 16 | unsigned long rx_fifomask; | |
| 17 | unsigned long rx_fifoshift; | |
| 18 | unsigned long rx_fifofull; | |
| 19 | unsigned long tx_fifomask; | |
| 20 | unsigned long tx_fifoshift; | |
| 21 | unsigned long tx_fifofull; | |
| 5f5a7a55 TA |
22 | unsigned int def_clk_sel; |
| 23 | unsigned long num_clks; | |
| 24 | unsigned long clksel_mask; | |
| 25 | unsigned long clksel_shift; | |
| b497549a | 26 | |
| 090f848d BD |
27 | /* uart port features */ |
| 28 | ||
| 29 | unsigned int has_divslot:1; | |
| 30 | ||
| b497549a BD |
31 | /* uart controls */ |
| 32 | int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *); | |
| 33 | }; | |
| 34 | ||
| da121506 TA |
35 | struct s3c24xx_serial_drv_data { |
| 36 | struct s3c24xx_uart_info *info; | |
| 37 | struct s3c2410_uartcfg *def_cfg; | |
| 38 | unsigned int fifosize[CONFIG_SERIAL_SAMSUNG_UARTS]; | |
| 39 | }; | |
| 40 | ||
| b497549a BD |
41 | struct s3c24xx_uart_port { |
| 42 | unsigned char rx_claimed; | |
| 43 | unsigned char tx_claimed; | |
| 30555476 BD |
44 | unsigned int pm_level; |
| 45 | unsigned long baudclk_rate; | |
| b497549a | 46 | |
| b73c289c BD |
47 | unsigned int rx_irq; |
| 48 | unsigned int tx_irq; | |
| 49 | ||
| b497549a | 50 | struct s3c24xx_uart_info *info; |
| b497549a BD |
51 | struct clk *clk; |
| 52 | struct clk *baudclk; | |
| 53 | struct uart_port port; | |
| da121506 | 54 | struct s3c24xx_serial_drv_data *drv_data; |
| 30555476 | 55 | |
| 4d84e970 TA |
56 | /* reference to platform data */ |
| 57 | struct s3c2410_uartcfg *cfg; | |
| 58 | ||
| 30555476 BD |
59 | #ifdef CONFIG_CPU_FREQ |
| 60 | struct notifier_block freq_transition; | |
| 61 | #endif | |
| b497549a BD |
62 | }; |
| 63 | ||
| 64 | /* conversion functions */ | |
| 65 | ||
| 66 | #define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev) | |
| b497549a BD |
67 | |
| 68 | /* register access controls */ | |
| 69 | ||
| 70 | #define portaddr(port, reg) ((port)->membase + (reg)) | |
| 88bb4ea1 | 71 | #define portaddrl(port, reg) ((unsigned long *)((port)->membase + (reg))) |
| b497549a BD |
72 | |
| 73 | #define rd_regb(port, reg) (__raw_readb(portaddr(port, reg))) | |
| 74 | #define rd_regl(port, reg) (__raw_readl(portaddr(port, reg))) | |
| 75 | ||
| 76 | #define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg)) | |
| 77 | #define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg)) | |
| 78 | ||
| 84f57d9e AB |
79 | #if defined(CONFIG_SERIAL_SAMSUNG_DEBUG) && \ |
| 80 | defined(CONFIG_DEBUG_LL) && \ | |
| 81 | !defined(MODULE) | |
| b497549a BD |
82 | |
| 83 | extern void printascii(const char *); | |
| 84 | ||
| 85 | static void dbg(const char *fmt, ...) | |
| 86 | { | |
| 87 | va_list va; | |
| 88 | char buff[256]; | |
| 89 | ||
| 90 | va_start(va, fmt); | |
| 91 | vsprintf(buff, fmt, va); | |
| 92 | va_end(va); | |
| 93 | ||
| 94 | printascii(buff); | |
| 95 | } | |
| 96 | ||
| 97 | #else | |
| 98 | #define dbg(x...) do { } while (0) | |
| 99 | #endif |