diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/serial/mpc52xx_uart.c | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 02469c3..f0ca448 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -397,34 +397,10 @@ static unsigned long mpc512x_getuartclk(void *p) return mpc5xxx_get_bus_frequency(p); } -#define DEFAULT_FIFO_SIZE 16 - -static unsigned int __init get_fifo_size(struct device_node *np, - char *fifo_name) -{ - const unsigned int *fp; - - fp = of_get_property(np, fifo_name, NULL); - if (fp) - return *fp; - - pr_warning("no %s property in %s node, defaulting to %d\n", - fifo_name, np->full_name, DEFAULT_FIFO_SIZE); - - return DEFAULT_FIFO_SIZE; -} - -#define FIFOC(_base) ((struct mpc512x_psc_fifo __iomem *) \ - ((u32)(_base) + sizeof(struct mpc52xx_psc))) - /* Init PSC FIFO Controller */ static int __init mpc512x_psc_fifoc_init(void) { struct device_node *np; - void __iomem *psc; - unsigned int tx_fifo_size; - unsigned int rx_fifo_size; - int fifobase = 0; /* current fifo address in 32 bit words */ np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-psc-fifo"); @@ -447,51 +423,6 @@ static int __init mpc512x_psc_fifoc_init(void) return -ENODEV; } - for_each_compatible_node(np, NULL, "fsl,mpc5121-psc-uart") { - tx_fifo_size = get_fifo_size(np, "fsl,tx-fifo-size"); - rx_fifo_size = get_fifo_size(np, "fsl,rx-fifo-size"); - - /* size in register is in 4 byte units */ - tx_fifo_size /= 4; - rx_fifo_size /= 4; - if (!tx_fifo_size) - tx_fifo_size = 1; - if (!rx_fifo_size) - rx_fifo_size = 1; - - psc = of_iomap(np, 0); - if (!psc) { - pr_err("%s: Can't map %s device\n", - __func__, np->full_name); - continue; - } - - /* FIFO space is 4KiB, check if requested size is available */ - if ((fifobase + tx_fifo_size + rx_fifo_size) > 0x1000) { - pr_err("%s: no fifo space available for %s\n", - __func__, np->full_name); - iounmap(psc); - /* - * chances are that another device requests less - * fifo space, so we continue. - */ - continue; - } - /* set tx and rx fifo size registers */ - out_be32(&FIFOC(psc)->txsz, (fifobase << 16) | tx_fifo_size); - fifobase += tx_fifo_size; - out_be32(&FIFOC(psc)->rxsz, (fifobase << 16) | rx_fifo_size); - fifobase += rx_fifo_size; - - /* reset and enable the slices */ - out_be32(&FIFOC(psc)->txcmd, 0x80); - out_be32(&FIFOC(psc)->txcmd, 0x01); - out_be32(&FIFOC(psc)->rxcmd, 0x80); - out_be32(&FIFOC(psc)->rxcmd, 0x01); - - iounmap(psc); - } - return 0; } |
