*/
#include <common.h>
+#include <clk.h>
#include <dm.h>
#include <errno.h>
-#include <fdtdec.h>
#include <ns16550.h>
#include <serial.h>
#include <watchdog.h>
#define UART_LCRVAL UART_LCR_8N1 /* 8 data, 1 stop, no parity */
#define UART_MCRVAL (UART_MCR_DTR | \
UART_MCR_RTS) /* RTS/DTR */
-#define UART_FCRVAL (UART_FCR_FIFO_EN | \
- UART_FCR_RXSR | \
- UART_FCR_TXSR) /* Clear & enable FIFOs */
#ifndef CONFIG_DM_SERIAL
#ifdef CONFIG_SYS_NS16550_PORT_MAPPED
#define CONFIG_SYS_NS16550_IER 0x00
#endif /* CONFIG_SYS_NS16550_IER */
-#ifdef CONFIG_DM_SERIAL
-
-#ifndef CONFIG_SYS_NS16550_CLK
-#define CONFIG_SYS_NS16550_CLK 0
-#endif
-
static inline void serial_out_shift(void *addr, int shift, int value)
{
#ifdef CONFIG_SYS_NS16550_PORT_MAPPED
outb(value, (ulong)addr);
-#elif defined(CONFIG_SYS_NS16550_MEM32) && !defined(CONFIG_SYS_BIG_ENDIAN)
+#elif defined(CONFIG_SYS_NS16550_MEM32) && defined(CONFIG_SYS_LITTLE_ENDIAN)
out_le32(addr, value);
#elif defined(CONFIG_SYS_NS16550_MEM32) && defined(CONFIG_SYS_BIG_ENDIAN)
out_be32(addr, value);
{
#ifdef CONFIG_SYS_NS16550_PORT_MAPPED
return inb((ulong)addr);
-#elif defined(CONFIG_SYS_NS16550_MEM32) && !defined(CONFIG_SYS_BIG_ENDIAN)
+#elif defined(CONFIG_SYS_NS16550_MEM32) && defined(CONFIG_SYS_LITTLE_ENDIAN)
return in_le32(addr);
#elif defined(CONFIG_SYS_NS16550_MEM32) && defined(CONFIG_SYS_BIG_ENDIAN)
return in_be32(addr);
#endif
}
+#ifdef CONFIG_DM_SERIAL
+
+#ifndef CONFIG_SYS_NS16550_CLK
+#define CONFIG_SYS_NS16550_CLK 0
+#endif
+
static void ns16550_writeb(NS16550_t port, int offset, int value)
{
struct ns16550_platdata *plat = port->plat;
unsigned char *addr;
offset *= 1 << plat->reg_shift;
- addr = map_physmem(plat->base, 0, MAP_NOCACHE) + offset;
+ addr = (unsigned char *)plat->base + offset;
+
/*
* As far as we know it doesn't make sense to support selection of
* these options at run-time, so use the existing CONFIG options.
*/
- serial_out_shift(addr, plat->reg_shift, value);
+ serial_out_shift(addr + plat->reg_offset, plat->reg_shift, value);
}
static int ns16550_readb(NS16550_t port, int offset)
unsigned char *addr;
offset *= 1 << plat->reg_shift;
- addr = map_physmem(plat->base, 0, MAP_NOCACHE) + offset;
+ addr = (unsigned char *)plat->base + offset;
+
+ return serial_in_shift(addr + plat->reg_offset, plat->reg_shift);
+}
- return serial_in_shift(addr, plat->reg_shift);
+static u32 ns16550_getfcr(NS16550_t port)
+{
+ struct ns16550_platdata *plat = port->plat;
+
+ return plat->fcr;
}
/* We can clean these up once everything is moved to driver model */
#define serial_in(addr) \
ns16550_readb(com_port, \
(unsigned char *)addr - (unsigned char *)com_port)
-#endif
-
-static inline int calc_divisor(NS16550_t port, int clock, int baudrate)
+#else
+static u32 ns16550_getfcr(NS16550_t port)
{
- const unsigned int mode_x_div = 16;
-
- return DIV_ROUND_CLOSEST(clock, mode_x_div * baudrate);
+ return UART_FCR_DEFVAL;
}
+#endif
int ns16550_calc_divisor(NS16550_t port, int clock, int baudrate)
{
-#ifdef CONFIG_OMAP1510
- /* If can't cleanly clock 115200 set div to 1 */
- if ((clock == 12000000) && (baudrate == 115200)) {
- port->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */
- return 1; /* return 1 for base divisor */
- }
- port->osc_12m_sel = 0; /* clear if previsouly set */
-#endif
+ const unsigned int mode_x_div = 16;
- return calc_divisor(port, clock, baudrate);
+ return DIV_ROUND_CLOSEST(clock, mode_x_div * baudrate);
}
static void NS16550_setbrg(NS16550_t com_port, int baud_divisor)
;
serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier);
-#if defined(CONFIG_OMAP) || defined(CONFIG_AM33XX) || \
- defined(CONFIG_TI81XX) || defined(CONFIG_AM43XX)
+#if defined(CONFIG_ARCH_OMAP2PLUS)
serial_out(0x7, &com_port->mdr1); /* mode select reset TL16C750*/
#endif
serial_out(UART_MCRVAL, &com_port->mcr);
- serial_out(UART_FCRVAL, &com_port->fcr);
+ serial_out(ns16550_getfcr(com_port), &com_port->fcr);
if (baud_divisor != -1)
NS16550_setbrg(com_port, baud_divisor);
-#if defined(CONFIG_OMAP) || \
- defined(CONFIG_AM33XX) || defined(CONFIG_SOC_DA8XX) || \
- defined(CONFIG_TI81XX) || defined(CONFIG_AM43XX)
-
+#if defined(CONFIG_ARCH_OMAP2PLUS) || defined(CONFIG_SOC_DA8XX)
/* /16 is proper to hit 115200 with 48MHz */
serial_out(0, &com_port->mdr1);
-#endif /* CONFIG_OMAP */
+#endif
#if defined(CONFIG_SOC_KEYSTONE)
serial_out(UART_REG_VAL_PWREMU_MGMT_UART_ENABLE, &com_port->regC);
#endif
serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier);
NS16550_setbrg(com_port, 0);
serial_out(UART_MCRVAL, &com_port->mcr);
- serial_out(UART_FCRVAL, &com_port->fcr);
+ serial_out(ns16550_getfcr(com_port), &com_port->fcr);
NS16550_setbrg(com_port, baud_divisor);
}
#endif /* CONFIG_NS16550_MIN_FUNCTIONS */
#include <debug_uart.h>
-#define serial_dout(reg, value) \
- serial_out_shift((char *)com_port + \
- ((char *)reg - (char *)com_port) * \
- (1 << CONFIG_DEBUG_UART_SHIFT), \
- CONFIG_DEBUG_UART_SHIFT, value)
-#define serial_din(reg) \
- serial_in_shift((char *)com_port + \
- ((char *)reg - (char *)com_port) * \
- (1 << CONFIG_DEBUG_UART_SHIFT), \
- CONFIG_DEBUG_UART_SHIFT)
-
static inline void _debug_uart_init(void)
{
struct NS16550 *com_port = (struct NS16550 *)CONFIG_DEBUG_UART_BASE;
* feasible. The better fix is to move all users of this driver to
* driver model.
*/
- baud_divisor = calc_divisor(com_port, CONFIG_DEBUG_UART_CLOCK,
- CONFIG_BAUDRATE);
+ baud_divisor = ns16550_calc_divisor(com_port, CONFIG_DEBUG_UART_CLOCK,
+ CONFIG_BAUDRATE);
serial_dout(&com_port->ier, CONFIG_SYS_NS16550_IER);
serial_dout(&com_port->mcr, UART_MCRVAL);
- serial_dout(&com_port->fcr, UART_FCRVAL);
+ serial_dout(&com_port->fcr, UART_FCR_DEFVAL);
serial_dout(&com_port->lcr, UART_LCR_BKSE | UART_LCRVAL);
serial_dout(&com_port->dll, baud_divisor & 0xff);
#endif
+#ifdef CONFIG_DEBUG_UART_OMAP
+
+#include <debug_uart.h>
+
+static inline void _debug_uart_init(void)
+{
+ struct NS16550 *com_port = (struct NS16550 *)CONFIG_DEBUG_UART_BASE;
+ int baud_divisor;
+
+ baud_divisor = ns16550_calc_divisor(com_port, CONFIG_DEBUG_UART_CLOCK,
+ CONFIG_BAUDRATE);
+ serial_dout(&com_port->ier, CONFIG_SYS_NS16550_IER);
+ serial_dout(&com_port->mdr1, 0x7);
+ serial_dout(&com_port->mcr, UART_MCRVAL);
+ serial_dout(&com_port->fcr, UART_FCR_DEFVAL);
+
+ serial_dout(&com_port->lcr, UART_LCR_BKSE | UART_LCRVAL);
+ serial_dout(&com_port->dll, baud_divisor & 0xff);
+ serial_dout(&com_port->dlm, (baud_divisor >> 8) & 0xff);
+ serial_dout(&com_port->lcr, UART_LCRVAL);
+ serial_dout(&com_port->mdr1, 0x0);
+}
+
+static inline void _debug_uart_putc(int ch)
+{
+ struct NS16550 *com_port = (struct NS16550 *)CONFIG_DEBUG_UART_BASE;
+
+ while (!(serial_din(&com_port->lsr) & UART_LSR_THRE))
+ ;
+ serial_dout(&com_port->thr, ch);
+}
+
+DEBUG_UART_FUNCS
+
+#endif
+
#ifdef CONFIG_DM_SERIAL
static int ns16550_serial_putc(struct udevice *dev, const char ch)
{
struct NS16550 *const com_port = dev_get_priv(dev);
if (input)
- return serial_in(&com_port->lsr) & UART_LSR_DR ? 1 : 0;
+ return (serial_in(&com_port->lsr) & UART_LSR_DR) ? 1 : 0;
else
- return serial_in(&com_port->lsr) & UART_LSR_THRE ? 0 : 1;
+ return (serial_in(&com_port->lsr) & UART_LSR_THRE) ? 0 : 1;
}
static int ns16550_serial_getc(struct udevice *dev)
}
#if CONFIG_IS_ENABLED(OF_CONTROL)
+enum {
+ PORT_NS16550 = 0,
+ PORT_JZ4780,
+};
+#endif
+
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
int ns16550_serial_ofdata_to_platdata(struct udevice *dev)
{
struct ns16550_platdata *plat = dev->platdata;
+ const u32 port_type = dev_get_driver_data(dev);
fdt_addr_t addr;
+ struct clk clk;
+ int err;
/* try Processor Local Bus device first */
- addr = dev_get_addr(dev);
+ addr = dev_read_addr(dev);
#if defined(CONFIG_PCI) && defined(CONFIG_DM_PCI)
if (addr == FDT_ADDR_T_NONE) {
/* then try pci device */
int ret;
/* we prefer to use a memory-mapped register */
- ret = fdtdec_get_pci_addr(gd->fdt_blob, dev->of_offset,
+ ret = fdtdec_get_pci_addr(gd->fdt_blob, dev_of_offset(dev),
FDT_PCI_SPACE_MEM32, "reg",
&pci_addr);
if (ret) {
/* try if there is any i/o-mapped register */
ret = fdtdec_get_pci_addr(gd->fdt_blob,
- dev->of_offset,
+ dev_of_offset(dev),
FDT_PCI_SPACE_IO,
"reg", &pci_addr);
if (ret)
if (addr == FDT_ADDR_T_NONE)
return -EINVAL;
+#ifdef CONFIG_SYS_NS16550_PORT_MAPPED
plat->base = addr;
- plat->reg_shift = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
- "reg-shift", 0);
- plat->clock = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
- "clock-frequency",
- CONFIG_SYS_NS16550_CLK);
+#else
+ plat->base = (unsigned long)map_physmem(addr, 0, MAP_NOCACHE);
+#endif
+
+ plat->reg_offset = dev_read_u32_default(dev, "reg-offset", 0);
+ plat->reg_shift = dev_read_u32_default(dev, "reg-shift", 0);
+
+ err = clk_get_by_index(dev, 0, &clk);
+ if (!err) {
+ err = clk_get_rate(&clk);
+ if (!IS_ERR_VALUE(err))
+ plat->clock = err;
+ } else if (err != -ENOENT && err != -ENODEV && err != -ENOSYS) {
+ debug("ns16550 failed to get clock\n");
+ return err;
+ }
+
+ if (!plat->clock)
+ plat->clock = dev_read_u32_default(dev, "clock-frequency",
+ CONFIG_SYS_NS16550_CLK);
if (!plat->clock) {
debug("ns16550 clock not defined\n");
return -EINVAL;
}
+ plat->fcr = UART_FCR_DEFVAL;
+ if (port_type == PORT_JZ4780)
+ plat->fcr |= UART_FCR_UME;
+
return 0;
}
#endif
.setbrg = ns16550_serial_setbrg,
};
-#if CONFIG_IS_ENABLED(OF_CONTROL)
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
+/*
+ * Please consider existing compatible strings before adding a new
+ * one to keep this table compact. Or you may add a generic "ns16550"
+ * compatible string to your dts.
+ */
static const struct udevice_id ns16550_serial_ids[] = {
- { .compatible = "ns16550" },
- { .compatible = "ns16550a" },
- { .compatible = "nvidia,tegra20-uart" },
- { .compatible = "rockchip,rk3036-uart" },
- { .compatible = "snps,dw-apb-uart" },
- { .compatible = "ti,omap2-uart" },
- { .compatible = "ti,omap3-uart" },
- { .compatible = "ti,omap4-uart" },
- { .compatible = "ti,am3352-uart" },
- { .compatible = "ti,am4372-uart" },
- { .compatible = "ti,dra742-uart" },
+ { .compatible = "ns16550", .data = PORT_NS16550 },
+ { .compatible = "ns16550a", .data = PORT_NS16550 },
+ { .compatible = "ingenic,jz4780-uart", .data = PORT_JZ4780 },
+ { .compatible = "nvidia,tegra20-uart", .data = PORT_NS16550 },
+ { .compatible = "snps,dw-apb-uart", .data = PORT_NS16550 },
+ { .compatible = "ti,omap2-uart", .data = PORT_NS16550 },
+ { .compatible = "ti,omap3-uart", .data = PORT_NS16550 },
+ { .compatible = "ti,omap4-uart", .data = PORT_NS16550 },
+ { .compatible = "ti,am3352-uart", .data = PORT_NS16550 },
+ { .compatible = "ti,am4372-uart", .data = PORT_NS16550 },
+ { .compatible = "ti,dra742-uart", .data = PORT_NS16550 },
{}
};
-#endif
+#endif /* OF_CONTROL && !OF_PLATDATA */
#if CONFIG_IS_ENABLED(SERIAL_PRESENT)
+
+/* TODO(sjg@chromium.org): Integrate this into a macro like CONFIG_IS_ENABLED */
+#if !defined(CONFIG_TPL_BUILD) || defined(CONFIG_TPL_DM_SERIAL)
U_BOOT_DRIVER(ns16550_serial) = {
.name = "ns16550_serial",
.id = UCLASS_SERIAL,
-#if CONFIG_IS_ENABLED(OF_CONTROL)
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
.of_match = ns16550_serial_ids,
.ofdata_to_platdata = ns16550_serial_ofdata_to_platdata,
.platdata_auto_alloc_size = sizeof(struct ns16550_platdata),
.flags = DM_FLAG_PRE_RELOC,
};
#endif
+#endif /* SERIAL_PRESENT */
+
#endif /* CONFIG_DM_SERIAL */
projects / people / ms / u-boot.git / blobdiff