serial: sh-sci: Kill off bitrotted H8/300 support.

h8300 has never been updated upstream to support the conversion to the
driver model (which happened mid-2.5), and it doesn't seem likely that it
ever will. Kill off the remaining bitrotted support to reduce the
maintenance burden going forward.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

3 files changed, 14 insertions, 121 deletions

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 636144cea932..1c0cd2d26d37 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -974,7 +974,7 @@ config SERIAL_IP22_ZILOG_CONSOLE
 
 config SERIAL_SH_SCI
         tristate "SuperH SCI(F) serial port support"
-        depends on HAVE_CLK && (SUPERH || H8300 || ARCH_SHMOBILE)
+        depends on HAVE_CLK && (SUPERH || ARCH_SHMOBILE)
         select SERIAL_CORE
 
 config SERIAL_SH_SCI_NR_UARTS
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index ebd8629c108d..280c02af0eae 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -54,10 +54,6 @@
 #include <asm/sh_bios.h>
 #endif
 
-#ifdef CONFIG_H8300
-#include <asm/gpio.h>
-#endif
-
 #include "sh-sci.h"
 
 struct sci_port {
@@ -164,23 +160,7 @@ static void sci_poll_put_char(struct uart_port *port, unsigned char c)
 }
 #endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_SH_SCI_CONSOLE */
 
-#if defined(__H8300H__) || defined(__H8300S__)
-static void sci_init_pins(struct uart_port *port, unsigned int cflag)
-{
-        int ch = (port->mapbase - SMR0) >> 3;
-
-        /* set DDR regs */
-        H8300_GPIO_DDR(h8300_sci_pins[ch].port,
-                       h8300_sci_pins[ch].rx,
-                       H8300_GPIO_INPUT);
-        H8300_GPIO_DDR(h8300_sci_pins[ch].port,
-                       h8300_sci_pins[ch].tx,
-                       H8300_GPIO_OUTPUT);
-
-        /* tx mark output*/
-        H8300_SCI_DR(ch) |= h8300_sci_pins[ch].tx;
-}
-#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
+#if defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
 static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
 {
         if (port->mapbase == 0xA4400000) {
@@ -1863,14 +1843,8 @@ static int __devinit serial_console_setup(struct console *co, char *options)
         if (options)
                 uart_parse_options(options, &baud, &parity, &bits, &flow);
 
-        ret = uart_set_options(port, co, baud, parity, bits, flow);
-#if defined(__H8300H__) || defined(__H8300S__)
-        /* disable rx interrupt */
-        if (ret == 0)
-                sci_stop_rx(port);
-#endif
         /* TODO: disable clock */
-        return ret;
+        return uart_set_options(port, co, baud, parity, bits, flow);
 }
 
 static struct console serial_console = {
diff --git a/drivers/tty/serial/sh-sci.h b/drivers/tty/serial/sh-sci.h
index b04d937c9110..4dc249ecc59f 100644
--- a/drivers/tty/serial/sh-sci.h
+++ b/drivers/tty/serial/sh-sci.h
@@ -2,13 +2,6 @@
 #include <linux/io.h>
 #include <linux/gpio.h>
 
-#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
-#include <asm/regs306x.h>
-#endif
-#if defined(CONFIG_H8S2678)
-#include <asm/regs267x.h>
-#endif
-
 #if defined(CONFIG_CPU_SUBTYPE_SH7706) || \
     defined(CONFIG_CPU_SUBTYPE_SH7707) || \
     defined(CONFIG_CPU_SUBTYPE_SH7708) || \
@@ -72,10 +65,6 @@
 #elif defined(CONFIG_CPU_SUBTYPE_SH4_202)
 # define SCSPTR2 0xffe80020 /* 16 bit SCIF */
 # define SCIF_ORER 0x0001   /* overrun error bit */
-#elif defined(CONFIG_H83007) || defined(CONFIG_H83068)
-# define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
-#elif defined(CONFIG_H8S2678)
-# define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
 #elif defined(CONFIG_CPU_SUBTYPE_SH7757)
 # define SCSPTR0 0xfe4b0020
 # define SCIF_ORER 0x0001
@@ -223,17 +212,6 @@
     }                                                                   \
   }
 
-#ifdef CONFIG_H8300
-/* h8300 don't have SCIF */
-#define CPU_SCIF_FNS(name)                                              \
-  static inline unsigned int sci_##name##_in(struct uart_port *port)    \
-  {                                                                     \
-    return 0;                                                           \
-  }                                                                     \
-  static inline void sci_##name##_out(struct uart_port *port, unsigned int value) \
-  {                                                                     \
-  }
-#else
 #define CPU_SCIF_FNS(name, scif_offset, scif_size)                      \
   static inline unsigned int sci_##name##_in(struct uart_port *port)    \
   {                                                                     \
@@ -243,7 +221,6 @@
   {                                                                     \
     SCI_OUT(scif_size, scif_offset, value);                             \
   }
-#endif
 
 #define CPU_SCI_FNS(name, sci_offset, sci_size)                         \
   static inline unsigned int sci_##name##_in(struct uart_port* port)    \
@@ -262,8 +239,7 @@
     defined(CONFIG_ARCH_SH7372)
 #if defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
 #define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
-                                sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
-                                 h8_sci_offset, h8_sci_size) \
+                 sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
   CPU_SCIx_FNS(name, sh4_sci_offset, sh4_sci_size, sh4_scif_offset, sh4_scif_size)
 #define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
           CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
@@ -282,19 +258,11 @@
   CPU_SCIF_FNS(name, scif_offset, scif_size)
 #else
 #define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
-                 sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
-                 h8_sci_offset, h8_sci_size) \
+                 sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
   CPU_SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh3_scif_offset, sh3_scif_size)
 #define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
   CPU_SCIF_FNS(name, sh3_scif_offset, sh3_scif_size)
 #endif
-#elif defined(__H8300H__) || defined(__H8300S__)
-#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
-                 sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
-                 h8_sci_offset, h8_sci_size) \
-  CPU_SCI_FNS(name, h8_sci_offset, h8_sci_size)
-#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
-  CPU_SCIF_FNS(name)
 #elif defined(CONFIG_CPU_SUBTYPE_SH7723) ||\
       defined(CONFIG_CPU_SUBTYPE_SH7724)
         #define SCIx_FNS(name, sh4_scifa_offset, sh4_scifa_size, sh4_scif_offset, sh4_scif_size) \
@@ -303,8 +271,7 @@
                 CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
 #else
 #define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
-                 sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
-                 h8_sci_offset, h8_sci_size) \
+                 sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
   CPU_SCIx_FNS(name, sh4_sci_offset, sh4_sci_size, sh4_scif_offset, sh4_scif_size)
 #define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
   CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
@@ -353,14 +320,14 @@ SCIF_FNS(SCFCR,  0x18, 16)
 SCIF_FNS(SCFDR,  0x1c, 16)
 SCIF_FNS(SCLSR,  0x24, 16)
 #else
-/*      reg      SCI/SH3   SCI/SH4  SCIF/SH3   SCIF/SH4  SCI/H8*/
-/*      name     off  sz   off  sz   off  sz   off  sz   off  sz*/
-SCIx_FNS(SCSMR,  0x00,  8, 0x00,  8, 0x00,  8, 0x00, 16, 0x00,  8)
-SCIx_FNS(SCBRR,  0x02,  8, 0x04,  8, 0x02,  8, 0x04,  8, 0x01,  8)
-SCIx_FNS(SCSCR,  0x04,  8, 0x08,  8, 0x04,  8, 0x08, 16, 0x02,  8)
-SCIx_FNS(SCxTDR, 0x06,  8, 0x0c,  8, 0x06,  8, 0x0C,  8, 0x03,  8)
-SCIx_FNS(SCxSR,  0x08,  8, 0x10,  8, 0x08, 16, 0x10, 16, 0x04,  8)
-SCIx_FNS(SCxRDR, 0x0a,  8, 0x14,  8, 0x0A,  8, 0x14,  8, 0x05,  8)
+/*      reg      SCI/SH3   SCI/SH4  SCIF/SH3   SCIF/SH4  */
+/*      name     off  sz   off  sz   off  sz   off  sz   */
+SCIx_FNS(SCSMR,  0x00,  8, 0x00,  8, 0x00,  8, 0x00, 16)
+SCIx_FNS(SCBRR,  0x02,  8, 0x04,  8, 0x02,  8, 0x04,  8)
+SCIx_FNS(SCSCR,  0x04,  8, 0x08,  8, 0x04,  8, 0x08, 16)
+SCIx_FNS(SCxTDR, 0x06,  8, 0x0c,  8, 0x06,  8, 0x0C,  8)
+SCIx_FNS(SCxSR,  0x08,  8, 0x10,  8, 0x08, 16, 0x10, 16)
+SCIx_FNS(SCxRDR, 0x0a,  8, 0x14,  8, 0x0A,  8, 0x14,  8)
 SCIF_FNS(SCFCR,                      0x0c,  8, 0x18, 16)
 #if defined(CONFIG_CPU_SUBTYPE_SH7760) || \
     defined(CONFIG_CPU_SUBTYPE_SH7780) || \
@@ -390,48 +357,6 @@ SCIF_FNS(SCLSR,                         0,  0, 0x24, 16)
 #define sci_in(port, reg) sci_##reg##_in(port)
 #define sci_out(port, reg, value) sci_##reg##_out(port, value)
 
-/* H8/300 series SCI pins assignment */
-#if defined(__H8300H__) || defined(__H8300S__)
-static const struct __attribute__((packed)) {
-        int port;             /* GPIO port no */
-        unsigned short rx,tx; /* GPIO bit no */
-} h8300_sci_pins[] = {
-#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
-        {    /* SCI0 */
-                .port = H8300_GPIO_P9,
-                .rx   = H8300_GPIO_B2,
-                .tx   = H8300_GPIO_B0,
-        },
-        {    /* SCI1 */
-                .port = H8300_GPIO_P9,
-                .rx   = H8300_GPIO_B3,
-                .tx   = H8300_GPIO_B1,
-        },
-        {    /* SCI2 */
-                .port = H8300_GPIO_PB,
-                .rx   = H8300_GPIO_B7,
-                .tx   = H8300_GPIO_B6,
-        }
-#elif defined(CONFIG_H8S2678)
-        {    /* SCI0 */
-                .port = H8300_GPIO_P3,
-                .rx   = H8300_GPIO_B2,
-                .tx   = H8300_GPIO_B0,
-        },
-        {    /* SCI1 */
-                .port = H8300_GPIO_P3,
-                .rx   = H8300_GPIO_B3,
-                .tx   = H8300_GPIO_B1,
-        },
-        {    /* SCI2 */
-                .port = H8300_GPIO_P5,
-                .rx   = H8300_GPIO_B1,
-                .tx   = H8300_GPIO_B0,
-        }
-#endif
-};
-#endif
-
 #if defined(CONFIG_CPU_SUBTYPE_SH7706) || \
     defined(CONFIG_CPU_SUBTYPE_SH7707) || \
     defined(CONFIG_CPU_SUBTYPE_SH7708) || \
@@ -454,12 +379,6 @@ static inline int sci_rxd_in(struct uart_port *port)
                 return __raw_readb(SCSPTR1)&0x01 ? 1 : 0; /* SCI */
         return 1;
 }
-#elif defined(__H8300H__) || defined(__H8300S__)
-static inline int sci_rxd_in(struct uart_port *port)
-{
-        int ch = (port->mapbase - SMR0) >> 3;
-        return (H8300_SCI_DR(ch) & h8300_sci_pins[ch].rx) ? 1 : 0;
-}
 #else /* default case for non-SCI processors */
 static inline int sci_rxd_in(struct uart_port *port)
 {