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_405GP) || \ 30 defined(CONFIG_405EP) || defined(CONFIG_405EZ) || \ 31 defined(CONFIG_405EX) || defined(CONFIG_440) || \ 32 defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) || \ 33 defined(CONFIG_MPC86xx) || \ 34 defined(CONFIG_TEGRA) || defined(CONFIG_SYS_COREBOOT) || \ 35 defined(CONFIG_MICROBLAZE) 36 extern struct serial_device serial0_device; 37 extern struct serial_device serial1_device; 38 #endif 39 40 extern struct serial_device eserial1_device; 41 extern struct serial_device eserial2_device; 42 extern struct serial_device eserial3_device; 43 extern struct serial_device eserial4_device; 44 extern struct serial_device eserial5_device; 45 extern struct serial_device eserial6_device; 46 47 extern void serial_register(struct serial_device *); 48 extern void serial_initialize(void); 49 extern void serial_stdio_init(void); 50 extern int serial_assign(const char *name); 51 extern void serial_reinit_all(void); 52 53 /* For usbtty */ 54 #ifdef CONFIG_USB_TTY 55 56 extern int usbtty_getc(void); 57 extern void usbtty_putc(const char c); 58 extern void usbtty_puts(const char *str); 59 extern int usbtty_tstc(void); 60 61 #else 62 63 /* stubs */ 64 #define usbtty_getc() 0 65 #define usbtty_putc(a) 66 #define usbtty_puts(a) 67 #define usbtty_tstc() 0 68 69 #endif /* CONFIG_USB_TTY */ 70 71 struct udevice; 72 73 /** 74 * struct struct dm_serial_ops - Driver model serial operations 75 * 76 * The uclass interface is implemented by all serial devices which use 77 * driver model. 78 */ 79 struct dm_serial_ops { 80 /** 81 * setbrg() - Set up the baud rate generator 82 * 83 * Adjust baud rate divisors to set up a new baud rate for this 84 * device. Not all devices will support all rates. If the rate 85 * cannot be supported, the driver is free to select the nearest 86 * available rate. or return -EINVAL if this is not possible. 87 * 88 * @dev: Device pointer 89 * @baudrate: New baud rate to use 90 * @return 0 if OK, -ve on error 91 */ 92 int (*setbrg)(struct udevice *dev, int baudrate); 93 /** 94 * getc() - Read a character and return it 95 * 96 * If no character is available, this should return -EAGAIN without 97 * waiting. 98 * 99 * @dev: Device pointer 100 * @return character (0..255), -ve on error 101 */ 102 int (*getc)(struct udevice *dev); 103 /** 104 * putc() - Write a character 105 * 106 * @dev: Device pointer 107 * @ch: character to write 108 * @return 0 if OK, -ve on error 109 */ 110 int (*putc)(struct udevice *dev, const char ch); 111 /** 112 * pending() - Check if input/output characters are waiting 113 * 114 * This can be used to return an indication of the number of waiting 115 * characters if the driver knows this (e.g. by looking at the FIFO 116 * level). It is acceptable to return 1 if an indeterminant number 117 * of characters is waiting. 118 * 119 * This method is optional. 120 * 121 * @dev: Device pointer 122 * @input: true to check input characters, false for output 123 * @return number of waiting characters, 0 for none, -ve on error 124 */ 125 int (*pending)(struct udevice *dev, bool input); 126 /** 127 * clear() - Clear the serial FIFOs/holding registers 128 * 129 * This method is optional. 130 * 131 * This quickly clears any input/output characters from the UART. 132 * If this is not possible, but characters still exist, then it 133 * is acceptable to return -EAGAIN (try again) or -EINVAL (not 134 * supported). 135 * 136 * @dev: Device pointer 137 * @return 0 if OK, -ve on error 138 */ 139 int (*clear)(struct udevice *dev); 140 #if CONFIG_POST & CONFIG_SYS_POST_UART 141 /** 142 * loop() - Control serial device loopback mode 143 * 144 * @dev: Device pointer 145 * @on: 1 to turn loopback on, 0 to turn if off 146 */ 147 int (*loop)(struct udevice *dev, int on); 148 #endif 149 }; 150 151 /** 152 * struct serial_dev_priv - information about a device used by the uclass 153 * 154 * @sdev: stdio device attached to this uart 155 */ 156 struct serial_dev_priv { 157 struct stdio_dev *sdev; 158 }; 159 160 /* Access the serial operations for a device */ 161 #define serial_get_ops(dev) ((struct dm_serial_ops *)(dev)->driver->ops) 162 163 void amirix_serial_initialize(void); 164 void arc_serial_initialize(void); 165 void arm_dcc_initialize(void); 166 void asc_serial_initialize(void); 167 void atmel_serial_initialize(void); 168 void au1x00_serial_initialize(void); 169 void bfin_jtag_initialize(void); 170 void bfin_serial_initialize(void); 171 void bmw_serial_initialize(void); 172 void clps7111_serial_initialize(void); 173 void cogent_serial_initialize(void); 174 void cpci750_serial_initialize(void); 175 void evb64260_serial_initialize(void); 176 void imx_serial_initialize(void); 177 void iop480_serial_initialize(void); 178 void jz_serial_initialize(void); 179 void leon2_serial_initialize(void); 180 void leon3_serial_initialize(void); 181 void lh7a40x_serial_initialize(void); 182 void lpc32xx_serial_initialize(void); 183 void marvell_serial_initialize(void); 184 void max3100_serial_initialize(void); 185 void mcf_serial_initialize(void); 186 void ml2_serial_initialize(void); 187 void mpc85xx_serial_initialize(void); 188 void mpc8xx_serial_initialize(void); 189 void mxc_serial_initialize(void); 190 void mxs_auart_initialize(void); 191 void ns16550_serial_initialize(void); 192 void oc_serial_initialize(void); 193 void p3mx_serial_initialize(void); 194 void pl01x_serial_initialize(void); 195 void pxa_serial_initialize(void); 196 void s3c24xx_serial_initialize(void); 197 void s5p_serial_initialize(void); 198 void sa1100_serial_initialize(void); 199 void sandbox_serial_initialize(void); 200 void sconsole_serial_initialize(void); 201 void sh_serial_initialize(void); 202 void uartlite_serial_initialize(void); 203 void zynq_serial_initialize(void); 204 205 #endif 206