1 #ifndef __SERIAL_H__ 2 #define __SERIAL_H__ 3 4 #include <post.h> 5 6 struct serial_device { 7 /* enough bytes to match alignment of following func pointer */ 8 char name[16]; 9 10 int (*start)(void); 11 int (*stop)(void); 12 void (*setbrg)(void); 13 int (*getc)(void); 14 int (*tstc)(void); 15 void (*putc)(const char c); 16 void (*puts)(const char *s); 17 #if CONFIG_POST & CONFIG_SYS_POST_UART 18 void (*loop)(int); 19 #endif 20 struct serial_device *next; 21 }; 22 23 void default_serial_puts(const char *s); 24 25 extern struct serial_device serial_smc_device; 26 extern struct serial_device serial_scc_device; 27 extern struct serial_device *default_serial_console(void); 28 29 #if defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) || \ 30 defined(CONFIG_MPC86xx) || \ 31 defined(CONFIG_TEGRA) || defined(CONFIG_SYS_COREBOOT) || \ 32 defined(CONFIG_MICROBLAZE) 33 extern struct serial_device serial0_device; 34 extern struct serial_device serial1_device; 35 #endif 36 37 extern struct serial_device eserial1_device; 38 extern struct serial_device eserial2_device; 39 extern struct serial_device eserial3_device; 40 extern struct serial_device eserial4_device; 41 extern struct serial_device eserial5_device; 42 extern struct serial_device eserial6_device; 43 44 extern void serial_register(struct serial_device *); 45 extern void serial_initialize(void); 46 extern void serial_stdio_init(void); 47 extern int serial_assign(const char *name); 48 extern void serial_reinit_all(void); 49 50 /* For usbtty */ 51 #ifdef CONFIG_USB_TTY 52 53 extern int usbtty_getc(void); 54 extern void usbtty_putc(const char c); 55 extern void usbtty_puts(const char *str); 56 extern int usbtty_tstc(void); 57 58 #else 59 60 /* stubs */ 61 #define usbtty_getc() 0 62 #define usbtty_putc(a) 63 #define usbtty_puts(a) 64 #define usbtty_tstc() 0 65 66 #endif /* CONFIG_USB_TTY */ 67 68 struct udevice; 69 70 /** 71 * struct struct dm_serial_ops - Driver model serial operations 72 * 73 * The uclass interface is implemented by all serial devices which use 74 * driver model. 75 */ 76 struct dm_serial_ops { 77 /** 78 * setbrg() - Set up the baud rate generator 79 * 80 * Adjust baud rate divisors to set up a new baud rate for this 81 * device. Not all devices will support all rates. If the rate 82 * cannot be supported, the driver is free to select the nearest 83 * available rate. or return -EINVAL if this is not possible. 84 * 85 * @dev: Device pointer 86 * @baudrate: New baud rate to use 87 * @return 0 if OK, -ve on error 88 */ 89 int (*setbrg)(struct udevice *dev, int baudrate); 90 /** 91 * getc() - Read a character and return it 92 * 93 * If no character is available, this should return -EAGAIN without 94 * waiting. 95 * 96 * @dev: Device pointer 97 * @return character (0..255), -ve on error 98 */ 99 int (*getc)(struct udevice *dev); 100 /** 101 * putc() - Write a character 102 * 103 * @dev: Device pointer 104 * @ch: character to write 105 * @return 0 if OK, -ve on error 106 */ 107 int (*putc)(struct udevice *dev, const char ch); 108 /** 109 * pending() - Check if input/output characters are waiting 110 * 111 * This can be used to return an indication of the number of waiting 112 * characters if the driver knows this (e.g. by looking at the FIFO 113 * level). It is acceptable to return 1 if an indeterminant number 114 * of characters is waiting. 115 * 116 * This method is optional. 117 * 118 * @dev: Device pointer 119 * @input: true to check input characters, false for output 120 * @return number of waiting characters, 0 for none, -ve on error 121 */ 122 int (*pending)(struct udevice *dev, bool input); 123 /** 124 * clear() - Clear the serial FIFOs/holding registers 125 * 126 * This method is optional. 127 * 128 * This quickly clears any input/output characters from the UART. 129 * If this is not possible, but characters still exist, then it 130 * is acceptable to return -EAGAIN (try again) or -EINVAL (not 131 * supported). 132 * 133 * @dev: Device pointer 134 * @return 0 if OK, -ve on error 135 */ 136 int (*clear)(struct udevice *dev); 137 #if CONFIG_POST & CONFIG_SYS_POST_UART 138 /** 139 * loop() - Control serial device loopback mode 140 * 141 * @dev: Device pointer 142 * @on: 1 to turn loopback on, 0 to turn if off 143 */ 144 int (*loop)(struct udevice *dev, int on); 145 #endif 146 }; 147 148 /** 149 * struct serial_dev_priv - information about a device used by the uclass 150 * 151 * @sdev: stdio device attached to this uart 152 * 153 * @buf: Pointer to the RX buffer 154 * @rd_ptr: Read pointer in the RX buffer 155 * @wr_ptr: Write pointer in the RX buffer 156 */ 157 struct serial_dev_priv { 158 struct stdio_dev *sdev; 159 160 char *buf; 161 int rd_ptr; 162 int wr_ptr; 163 }; 164 165 /* Access the serial operations for a device */ 166 #define serial_get_ops(dev) ((struct dm_serial_ops *)(dev)->driver->ops) 167 168 void amirix_serial_initialize(void); 169 void arc_serial_initialize(void); 170 void arm_dcc_initialize(void); 171 void asc_serial_initialize(void); 172 void atmel_serial_initialize(void); 173 void au1x00_serial_initialize(void); 174 void bfin_jtag_initialize(void); 175 void bfin_serial_initialize(void); 176 void bmw_serial_initialize(void); 177 void clps7111_serial_initialize(void); 178 void cogent_serial_initialize(void); 179 void cpci750_serial_initialize(void); 180 void evb64260_serial_initialize(void); 181 void imx_serial_initialize(void); 182 void iop480_serial_initialize(void); 183 void jz_serial_initialize(void); 184 void leon2_serial_initialize(void); 185 void leon3_serial_initialize(void); 186 void lh7a40x_serial_initialize(void); 187 void lpc32xx_serial_initialize(void); 188 void marvell_serial_initialize(void); 189 void max3100_serial_initialize(void); 190 void mcf_serial_initialize(void); 191 void ml2_serial_initialize(void); 192 void mpc85xx_serial_initialize(void); 193 void mpc8xx_serial_initialize(void); 194 void mxc_serial_initialize(void); 195 void mxs_auart_initialize(void); 196 void ns16550_serial_initialize(void); 197 void oc_serial_initialize(void); 198 void p3mx_serial_initialize(void); 199 void pl01x_serial_initialize(void); 200 void pxa_serial_initialize(void); 201 void s3c24xx_serial_initialize(void); 202 void s5p_serial_initialize(void); 203 void sa1100_serial_initialize(void); 204 void sandbox_serial_initialize(void); 205 void sconsole_serial_initialize(void); 206 void sh_serial_initialize(void); 207 void uartlite_serial_initialize(void); 208 void zynq_serial_initialize(void); 209 210 #endif 211