Merge tag 'u-boot-amlogic-20200727' of https://gitlab.denx.de/u-boot/custodians/u...

[J-u-boot.git] / drivers / serial / serial_sh.c

diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index 3641c9f83408edc038503a50c621dbcb2dd2fb92..13b179f03ded3a768e99b85181ae1fd2942e0b15 100644 (file)
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -1,26 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * SuperH SCIF device driver.
  * Copyright (C) 2013  Renesas Electronics Corporation
  * Copyright (C) 2007,2008,2010, 2014 Nobuhiro Iwamatsu
  * Copyright (C) 2002 - 2008  Paul Mundt
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <errno.h>
+#include <clk.h>
 #include <dm.h>
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <serial.h>
 #include <linux/compiler.h>
 #include <dm/platform_data/serial_sh.h>
+#include <linux/delay.h>
 #include "serial_sh.h"
 
-#if defined(CONFIG_CPU_SH7760) || \
-       defined(CONFIG_CPU_SH7780) || \
-       defined(CONFIG_CPU_SH7785) || \
-       defined(CONFIG_CPU_SH7786)
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_CPU_SH7780)
 static int scif_rxfill(struct uart_port *port)
 {
        return sci_in(port, SCRFDR) & 0xff;
@@ -37,14 +37,6 @@ static int scif_rxfill(struct uart_port *port)
                return sci_in(port, SCFDR) & SCIF2_RFDC_MASK;
        }
 }
-#elif defined(CONFIG_ARCH_SH7372)
-static int scif_rxfill(struct uart_port *port)
-{
-       if (port->type == PORT_SCIFA)
-               return sci_in(port, SCFDR) & SCIF_RFDC_MASK;
-       else
-               return sci_in(port, SCRFDR);
-}
 #else
 static int scif_rxfill(struct uart_port *port)
 {
@@ -61,6 +53,9 @@ static void sh_serial_init_generic(struct uart_port *port)
        sci_out(port, SCFCR, SCFCR_RFRST|SCFCR_TFRST);
        sci_in(port, SCFCR);
        sci_out(port, SCFCR, 0);
+#if defined(CONFIG_RZA1)
+       sci_out(port, SCSPTR, 0x0003);
+#endif
 }
 
 static void
@@ -69,7 +64,7 @@ sh_serial_setbrg_generic(struct uart_port *port, int clk, int baudrate)
        if (port->clk_mode == EXT_CLK) {
                unsigned short dl = DL_VALUE(baudrate, clk);
                sci_out(port, DL, dl);
-               /* Need wait: Clock * 1/dl \e$B!_\e(B 1/16 */
+               /* Need wait: Clock * 1/dl * 1/16 */
                udelay((1000000 * dl * 16 / clk) * 1000 + 1);
        } else {
                sci_out(port, SCBRR, SCBRR_VALUE(baudrate, clk));
@@ -146,7 +141,7 @@ static int sh_serial_getc_generic(struct uart_port *port)
        return ch;
 }
 
-#ifdef CONFIG_DM_SERIAL
+#if CONFIG_IS_ENABLED(DM_SERIAL)
 
 static int sh_serial_pending(struct udevice *dev, bool input)
 {
@@ -201,12 +196,53 @@ static const struct dm_serial_ops sh_serial_ops = {
        .setbrg = sh_serial_setbrg,
 };
 
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+static const struct udevice_id sh_serial_id[] ={
+       {.compatible = "renesas,sci", .data = PORT_SCI},
+       {.compatible = "renesas,scif", .data = PORT_SCIF},
+       {.compatible = "renesas,scifa", .data = PORT_SCIFA},
+       {}
+};
+
+static int sh_serial_ofdata_to_platdata(struct udevice *dev)
+{
+       struct sh_serial_platdata *plat = dev_get_platdata(dev);
+       struct clk sh_serial_clk;
+       fdt_addr_t addr;
+       int ret;
+
+       addr = dev_read_addr(dev);
+       if (!addr)
+               return -EINVAL;
+
+       plat->base = addr;
+
+       ret = clk_get_by_name(dev, "fck", &sh_serial_clk);
+       if (!ret) {
+               ret = clk_enable(&sh_serial_clk);
+               if (!ret)
+                       plat->clk = clk_get_rate(&sh_serial_clk);
+       } else {
+               plat->clk = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
+                                          "clock", 1);
+       }
+
+       plat->type = dev_get_driver_data(dev);
+       return 0;
+}
+#endif
+
 U_BOOT_DRIVER(serial_sh) = {
        .name   = "serial_sh",
        .id     = UCLASS_SERIAL,
+       .of_match = of_match_ptr(sh_serial_id),
+       .ofdata_to_platdata = of_match_ptr(sh_serial_ofdata_to_platdata),
+       .platdata_auto_alloc_size = sizeof(struct sh_serial_platdata),
        .probe  = sh_serial_probe,
        .ops    = &sh_serial_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
        .flags  = DM_FLAG_PRE_RELOC,
+#endif
        .priv_auto_alloc_size = sizeof(struct uart_port),
 };
 
@@ -228,12 +264,16 @@ U_BOOT_DRIVER(serial_sh) = {
 # define SCIF_BASE     SCIF6_BASE
 #elif defined(CONFIG_CONS_SCIF7)
 # define SCIF_BASE     SCIF7_BASE
+#elif defined(CONFIG_CONS_SCIFA0)
+# define SCIF_BASE     SCIFA0_BASE
 #else
 # error "Default SCIF doesn't set....."
 #endif
 
 #if defined(CONFIG_SCIF_A)
        #define SCIF_BASE_PORT  PORT_SCIFA
+#elif defined(CONFIG_SCI)
+       #define SCIF_BASE_PORT  PORT_SCI
 #else
        #define SCIF_BASE_PORT  PORT_SCIF
 #endif