[U-Boot] [PATCH v2 7/9] serial: lpuart: Add driver model serial support

Bin Meng
2016-01-14T03:39:04Z

This adds driver model support to lpuart serial driver.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

---

Changes in v2:
- Split to use two separate U_BOOT_DRIVER()

doc/driver-model/serial-howto.txt | 1 -
drivers/serial/serial_lpuart.c | 167 ++++++++++++++++++++++++++++++++++++++
2 files changed, 167 insertions(+), 1 deletion(-)

diff --git a/doc/driver-model/serial-howto.txt b/doc/driver-model/serial-howto.txt
index 4706d56..c933b90 100644
--- a/doc/driver-model/serial-howto.txt
+++ b/doc/driver-model/serial-howto.txt
@@ -11,7 +11,6 @@ is time for maintainers to start converting over the remaining serial drivers:
opencores_yanu.c
serial_bfin.c
serial_imx.c
- serial_lpuart.c
serial_max3100.c
serial_pxa.c
serial_s3c24x0.c
diff --git a/drivers/serial/serial_lpuart.c b/drivers/serial/serial_lpuart.c
index 5cc1997..3f9c4d1 100644
--- a/drivers/serial/serial_lpuart.c
+++ b/drivers/serial/serial_lpuart.c
@@ -5,6 +5,7 @@
*/

#include <common.h>
+#include <dm.h>
#include <watchdog.h>
#include <asm/io.h>
#include <serial.h>
@@ -49,6 +50,10 @@ DECLARE_GLOBAL_DATA_PTR;

struct lpuart_fsl *base = (struct lpuart_fsl *)LPUART_BASE;

+struct lpuart_serial_platdata {
+ struct lpuart_fsl *reg;
+};
+
#ifndef CONFIG_LPUART_32B_REG
static void _lpuart_serial_setbrg(struct lpuart_fsl *base, int baudrate)
{
@@ -122,6 +127,7 @@ static int _lpuart_serial_init(struct lpuart_fsl *base)
return 0;
}

+#ifndef CONFIG_DM_SERIAL
static void lpuart_serial_setbrg(void)
{
_lpuart_serial_setbrg(base, gd->baudrate);
@@ -157,6 +163,54 @@ static struct serial_device lpuart_serial_drv = {
.getc = lpuart_serial_getc,
.tstc = lpuart_serial_tstc,
};
+#else /* CONFIG_DM_SERIAL */
+static int lpuart_serial_setbrg(struct udevice *dev, int baudrate)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ _lpuart_serial_setbrg(reg, baudrate);
+
+ return 0;
+}
+
+static int lpuart_serial_getc(struct udevice *dev)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ return _lpuart_serial_getc(reg);
+}
+
+static int lpuart_serial_putc(struct udevice *dev, const char c)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ _lpuart_serial_putc(reg, c);
+
+ return 0;
+}
+
+static int lpuart_serial_pending(struct udevice *dev, bool input)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ if (input)
+ return _lpuart_serial_tstc(reg);
+ else
+ return __raw_readb(&reg->us1) & US1_TDRE ? 0 : 1;
+}
+
+static int lpuart_serial_probe(struct udevice *dev)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ return _lpuart_serial_init(reg);
+}
+#endif /* CONFIG_DM_SERIAL */
#else
static void _lpuart32_serial_setbrg(struct lpuart_fsl *base, int baudrate)
{
@@ -227,6 +281,7 @@ static int _lpuart32_serial_init(struct lpuart_fsl *base)
return 0;
}

+#ifndef CONFIG_DM_SERIAL
static void lpuart32_serial_setbrg(void)
{
_lpuart32_serial_setbrg(base, gd->baudrate);
@@ -262,8 +317,57 @@ static struct serial_device lpuart32_serial_drv = {
.getc = lpuart32_serial_getc,
.tstc = lpuart32_serial_tstc,
};
+#else /* CONFIG_DM_SERIAL */
+static int lpuart32_serial_setbrg(struct udevice *dev, int baudrate)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ _lpuart32_serial_setbrg(reg, baudrate);
+
+ return 0;
+}
+
+static int lpuart32_serial_getc(struct udevice *dev)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ return _lpuart32_serial_getc(reg);
+}
+
+static int lpuart32_serial_putc(struct udevice *dev, const char c)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ _lpuart32_serial_putc(reg, c);
+
+ return 0;
+}
+
+static int lpuart32_serial_pending(struct udevice *dev, bool input)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ if (input)
+ return _lpuart32_serial_tstc(reg);
+ else
+ return in_be32(&reg->stat) & STAT_TDRE ? 0 : 1;
+}
+
+static int lpuart32_serial_probe(struct udevice *dev)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ struct lpuart_fsl *reg = plat->reg;
+
+ return _lpuart32_serial_init(reg);
+}
+#endif /* CONFIG_DM_SERIAL */
#endif

+#ifndef CONFIG_DM_SERIAL
void lpuart_serial_initialize(void)
{
#ifdef CONFIG_LPUART_32B_REG
@@ -281,3 +385,66 @@ __weak struct serial_device *default_serial_console(void)
return &lpuart_serial_drv;
#endif
}
+#else /* CONFIG_DM_SERIAL */
+static int lpuart_serial_ofdata_to_platdata(struct udevice *dev)
+{
+ struct lpuart_serial_platdata *plat = dev->platdata;
+ fdt_addr_t addr;
+
+ addr = dev_get_addr(dev);
+ if (addr == FDT_ADDR_T_NONE)
+ return -EINVAL;
+
+ plat->reg = (struct lpuart_fsl *)addr;
+
+ return 0;
+}
+
+#ifndef CONFIG_LPUART_32B_REG
+static const struct dm_serial_ops lpuart_serial_ops = {
+ .putc = lpuart_serial_putc,
+ .pending = lpuart_serial_pending,
+ .getc = lpuart_serial_getc,
+ .setbrg = lpuart_serial_setbrg,
+};
+
+static const struct udevice_id lpuart_serial_ids[] = {
+ { .compatible = "fsl,vf610-lpuart" },
+ { }
+};
+
+U_BOOT_DRIVER(serial_lpuart) = {
+ .name = "serial_lpuart",
+ .id = UCLASS_SERIAL,
+ .of_match = lpuart_serial_ids,
+ .ofdata_to_platdata = lpuart_serial_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct lpuart_serial_platdata),
+ .probe = lpuart_serial_probe,
+ .ops = &lpuart_serial_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+#else /* CONFIG_LPUART_32B_REG */
+static const struct dm_serial_ops lpuart32_serial_ops = {
+ .putc = lpuart32_serial_putc,
+ .pending = lpuart32_serial_pending,
+ .getc = lpuart32_serial_getc,
+ .setbrg = lpuart32_serial_setbrg,
+};
+
+static const struct udevice_id lpuart32_serial_ids[] = {
+ { .compatible = "fsl,ls1021a-lpuart" },
+ { }
+};
+
+U_BOOT_DRIVER(serial_lpuart32) = {
+ .name = "serial_lpuart32",
+ .id = UCLASS_SERIAL,
+ .of_match = lpuart32_serial_ids,
+ .ofdata_to_platdata = lpuart_serial_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct lpuart_serial_platdata),
+ .probe = lpuart32_serial_probe,
+ .ops = &lpuart32_serial_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+#endif /* CONFIG_LPUART_32B_REG */
+#endif /* CONFIG_DM_SERIAL */
--
1.8.2.1