diff options
| -rw-r--r-- | drivers/serial/serial_mpc8xx.c | 77 |
1 files changed, 74 insertions, 3 deletions
diff --git a/drivers/serial/serial_mpc8xx.c b/drivers/serial/serial_mpc8xx.c index 292912b7ee..f2d241417a 100644 --- a/drivers/serial/serial_mpc8xx.c +++ b/drivers/serial/serial_mpc8xx.c @@ -6,6 +6,7 @@ #include <common.h> #include <command.h> +#include <dm.h> #include <serial.h> #include <watchdog.h> #include <asm/cpm_8xx.h> @@ -35,9 +36,9 @@ struct serialbuffer { uchar txbuf; /* tx buffers */ }; -static void serial_setdivisor(cpm8xx_t __iomem *cp) +static void serial_setdivisor(cpm8xx_t __iomem *cp, int baudrate) { - int divisor = (gd->cpu_clk + 8 * gd->baudrate) / 16 / gd->baudrate; + int divisor = (gd->cpu_clk + 8 * baudrate) / 16 / baudrate; if (divisor / 16 > 0x1000) { /* bad divisor, assume 50MHz clock and 9600 baud */ @@ -71,7 +72,7 @@ static void smc_setbrg(void) out_be32(&cp->cp_simode, 0); - serial_setdivisor(cp); + serial_setdivisor(cp, gd->baudrate); } static int smc_init(void) @@ -186,11 +187,13 @@ static void smc_putc(const char c) WATCHDOG_RESET(); } +#ifndef CONFIG_DM_SERIAL static void smc_puts(const char *s) { while (*s) smc_putc(*s++); } +#endif static int smc_getc(void) { @@ -233,6 +236,7 @@ static int smc_tstc(void) return !(in_be16(&rtx->rxbd.cbd_sc) & BD_SC_EMPTY); } +#ifndef CONFIG_DM_SERIAL struct serial_device serial_smc_device = { .name = "serial_smc", .start = smc_init, @@ -253,3 +257,70 @@ void mpc8xx_serial_initialize(void) { serial_register(&serial_smc_device); } +#endif + +#ifdef CONFIG_DM_SERIAL +static int serial_mpc8xx_setbrg(struct udevice *dev, int baudrate) +{ + immap_t __iomem *im = (immap_t __iomem *)CONFIG_SYS_IMMR; + cpm8xx_t __iomem *cp = &(im->im_cpm); + + /* Set up the baud rate generator. + * See 8xx_io/commproc.c for details. + * + * Wire BRG1 to SMCx + */ + + out_be32(&cp->cp_simode, 0); + + serial_setdivisor(cp, baudrate); + + return 0; +} + +static int serial_mpc8xx_probe(struct udevice *dev) +{ + return smc_init(); +} + +static int serial_mpc8xx_putc(struct udevice *dev, const char ch) +{ + smc_putc(ch); + + return 0; +} + +static int serial_mpc8xx_getc(struct udevice *dev) +{ + return smc_getc(); +} + +static int serial_mpc8xx_pending(struct udevice *dev, bool input) +{ + if (input) + return smc_tstc(); + + return 0; +} + +static const struct dm_serial_ops serial_mpc8xx_ops = { + .putc = serial_mpc8xx_putc, + .pending = serial_mpc8xx_pending, + .getc = serial_mpc8xx_getc, + .setbrg = serial_mpc8xx_setbrg, +}; + +static const struct udevice_id serial_mpc8xx_ids[] = { + { .compatible = "fsl,pq1-smc" }, + { } +}; + +U_BOOT_DRIVER(serial_mpc8xx) = { + .name = "serial_mpc8xx", + .id = UCLASS_SERIAL, + .of_match = serial_mpc8xx_ids, + .probe = serial_mpc8xx_probe, + .ops = &serial_mpc8xx_ops, + .flags = DM_FLAG_PRE_RELOC, +}; +#endif |