[adm5120] switch to 2.6.24
[openwrt/svn-archive/archive.git] / target / linux / adm5120 / patches / 200-amba_pl010_hacks.patch
diff --git a/target/linux/adm5120/patches/200-amba_pl010_hacks.patch b/target/linux/adm5120/patches/200-amba_pl010_hacks.patch
new file mode 100644 (file)
index 0000000..22f5083
--- /dev/null
@@ -0,0 +1,297 @@
+Index: linux-2.6.24/drivers/serial/amba-pl010.c
+===================================================================
+--- linux-2.6.24.orig/drivers/serial/amba-pl010.c
++++ linux-2.6.24/drivers/serial/amba-pl010.c
+@@ -52,11 +52,10 @@
+ #include <asm/io.h>
+-#define UART_NR               8
+-
+ #define SERIAL_AMBA_MAJOR     204
+ #define SERIAL_AMBA_MINOR     16
+-#define SERIAL_AMBA_NR                UART_NR
++#define SERIAL_AMBA_NR                CONFIG_SERIAL_AMBA_PL010_NUMPORTS
++#define SERIAL_AMBA_NAME      CONFIG_SERIAL_AMBA_PL010_PORTNAME
+ #define AMBA_ISR_PASS_LIMIT   256
+@@ -82,7 +81,7 @@ static void pl010_stop_tx(struct uart_po
+       struct uart_amba_port *uap = (struct uart_amba_port *)port;
+       unsigned int cr;
+-      cr = readb(uap->port.membase + UART010_CR);
++      cr = readl(uap->port.membase + UART010_CR);
+       cr &= ~UART010_CR_TIE;
+       writel(cr, uap->port.membase + UART010_CR);
+ }
+@@ -92,7 +91,7 @@ static void pl010_start_tx(struct uart_p
+       struct uart_amba_port *uap = (struct uart_amba_port *)port;
+       unsigned int cr;
+-      cr = readb(uap->port.membase + UART010_CR);
++      cr = readl(uap->port.membase + UART010_CR);
+       cr |= UART010_CR_TIE;
+       writel(cr, uap->port.membase + UART010_CR);
+ }
+@@ -102,7 +101,7 @@ static void pl010_stop_rx(struct uart_po
+       struct uart_amba_port *uap = (struct uart_amba_port *)port;
+       unsigned int cr;
+-      cr = readb(uap->port.membase + UART010_CR);
++      cr = readl(uap->port.membase + UART010_CR);
+       cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
+       writel(cr, uap->port.membase + UART010_CR);
+ }
+@@ -112,7 +111,7 @@ static void pl010_enable_ms(struct uart_
+       struct uart_amba_port *uap = (struct uart_amba_port *)port;
+       unsigned int cr;
+-      cr = readb(uap->port.membase + UART010_CR);
++      cr = readl(uap->port.membase + UART010_CR);
+       cr |= UART010_CR_MSIE;
+       writel(cr, uap->port.membase + UART010_CR);
+ }
+@@ -122,9 +121,9 @@ static void pl010_rx_chars(struct uart_a
+       struct tty_struct *tty = uap->port.info->tty;
+       unsigned int status, ch, flag, rsr, max_count = 256;
+-      status = readb(uap->port.membase + UART01x_FR);
++      status = readl(uap->port.membase + UART01x_FR);
+       while (UART_RX_DATA(status) && max_count--) {
+-              ch = readb(uap->port.membase + UART01x_DR);
++              ch = readl(uap->port.membase + UART01x_DR);
+               flag = TTY_NORMAL;
+               uap->port.icount.rx++;
+@@ -133,7 +132,7 @@ static void pl010_rx_chars(struct uart_a
+                * Note that the error handling code is
+                * out of the main execution path
+                */
+-              rsr = readb(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
++              rsr = readl(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
+               if (unlikely(rsr & UART01x_RSR_ANY)) {
+                       writel(0, uap->port.membase + UART01x_ECR);
+@@ -165,7 +164,7 @@ static void pl010_rx_chars(struct uart_a
+               uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
+       ignore_char:
+-              status = readb(uap->port.membase + UART01x_FR);
++              status = readl(uap->port.membase + UART01x_FR);
+       }
+       spin_unlock(&uap->port.lock);
+       tty_flip_buffer_push(tty);
+@@ -210,7 +209,7 @@ static void pl010_modem_status(struct ua
+       writel(0, uap->port.membase + UART010_ICR);
+-      status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
++      status = readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+       delta = status ^ uap->old_status;
+       uap->old_status = status;
+@@ -238,7 +237,7 @@ static irqreturn_t pl010_int(int irq, vo
+       spin_lock(&uap->port.lock);
+-      status = readb(uap->port.membase + UART010_IIR);
++      status = readl(uap->port.membase + UART010_IIR);
+       if (status) {
+               do {
+                       if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
+@@ -251,7 +250,7 @@ static irqreturn_t pl010_int(int irq, vo
+                       if (pass_counter-- == 0)
+                               break;
+-                      status = readb(uap->port.membase + UART010_IIR);
++                      status = readl(uap->port.membase + UART010_IIR);
+               } while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
+                                  UART010_IIR_TIS));
+               handled = 1;
+@@ -265,7 +264,7 @@ static irqreturn_t pl010_int(int irq, vo
+ static unsigned int pl010_tx_empty(struct uart_port *port)
+ {
+       struct uart_amba_port *uap = (struct uart_amba_port *)port;
+-      unsigned int status = readb(uap->port.membase + UART01x_FR);
++      unsigned int status = readl(uap->port.membase + UART01x_FR);
+       return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
+ }
+@@ -275,7 +274,7 @@ static unsigned int pl010_get_mctrl(stru
+       unsigned int result = 0;
+       unsigned int status;
+-      status = readb(uap->port.membase + UART01x_FR);
++      status = readl(uap->port.membase + UART01x_FR);
+       if (status & UART01x_FR_DCD)
+               result |= TIOCM_CAR;
+       if (status & UART01x_FR_DSR)
+@@ -301,7 +300,7 @@ static void pl010_break_ctl(struct uart_
+       unsigned int lcr_h;
+       spin_lock_irqsave(&uap->port.lock, flags);
+-      lcr_h = readb(uap->port.membase + UART010_LCRH);
++      lcr_h = readl(uap->port.membase + UART010_LCRH);
+       if (break_state == -1)
+               lcr_h |= UART01x_LCRH_BRK;
+       else
+@@ -334,7 +333,7 @@ static int pl010_startup(struct uart_por
+       /*
+        * initialise the old status of the modem signals
+        */
+-      uap->old_status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
++      uap->old_status = readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+       /*
+        * Finally, enable interrupts
+@@ -365,7 +364,7 @@ static void pl010_shutdown(struct uart_p
+       writel(0, uap->port.membase + UART010_CR);
+       /* disable break condition and fifos */
+-      writel(readb(uap->port.membase + UART010_LCRH) &
++      writel(readl(uap->port.membase + UART010_LCRH) &
+               ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
+              uap->port.membase + UART010_LCRH);
+@@ -387,7 +386,7 @@ pl010_set_termios(struct uart_port *port
+       /*
+        * Ask the core to calculate the divisor for us.
+        */
+-      baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16); 
++      baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16);
+       quot = uart_get_divisor(port, baud);
+       switch (termios->c_cflag & CSIZE) {
+@@ -450,7 +449,7 @@ pl010_set_termios(struct uart_port *port
+               uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
+       /* first, disable everything */
+-      old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
++      old_cr = readl(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
+       if (UART_ENABLE_MS(port, termios->c_cflag))
+               old_cr |= UART010_CR_MSIE;
+@@ -540,7 +539,7 @@ static struct uart_ops amba_pl010_pops =
+       .verify_port    = pl010_verify_port,
+ };
+-static struct uart_amba_port *amba_ports[UART_NR];
++static struct uart_amba_port *amba_ports[SERIAL_AMBA_NR];
+ #ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
+@@ -550,7 +549,7 @@ static void pl010_console_putchar(struct
+       unsigned int status;
+       do {
+-              status = readb(uap->port.membase + UART01x_FR);
++              status = readl(uap->port.membase + UART01x_FR);
+               barrier();
+       } while (!UART_TX_READY(status));
+       writel(ch, uap->port.membase + UART01x_DR);
+@@ -567,7 +566,7 @@ pl010_console_write(struct console *co, 
+       /*
+        *      First save the CR then disable the interrupts
+        */
+-      old_cr = readb(uap->port.membase + UART010_CR);
++      old_cr = readl(uap->port.membase + UART010_CR);
+       writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
+       uart_console_write(&uap->port, s, count, pl010_console_putchar);
+@@ -577,7 +576,7 @@ pl010_console_write(struct console *co, 
+        *      and restore the TCR
+        */
+       do {
+-              status = readb(uap->port.membase + UART01x_FR);
++              status = readl(uap->port.membase + UART01x_FR);
+               barrier();
+       } while (status & UART01x_FR_BUSY);
+       writel(old_cr, uap->port.membase + UART010_CR);
+@@ -589,9 +588,9 @@ static void __init
+ pl010_console_get_options(struct uart_amba_port *uap, int *baud,
+                            int *parity, int *bits)
+ {
+-      if (readb(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
++      if (readl(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
+               unsigned int lcr_h, quot;
+-              lcr_h = readb(uap->port.membase + UART010_LCRH);
++              lcr_h = readl(uap->port.membase + UART010_LCRH);
+               *parity = 'n';
+               if (lcr_h & UART01x_LCRH_PEN) {
+@@ -606,8 +605,8 @@ pl010_console_get_options(struct uart_am
+               else
+                       *bits = 8;
+-              quot = readb(uap->port.membase + UART010_LCRL) |
+-                     readb(uap->port.membase + UART010_LCRM) << 8;
++              quot = readl(uap->port.membase + UART010_LCRL) |
++                     readl(uap->port.membase + UART010_LCRM) << 8;
+               *baud = uap->port.uartclk / (16 * (quot + 1));
+       }
+ }
+@@ -625,7 +624,7 @@ static int __init pl010_console_setup(st
+        * if so, search for the first available port that does have
+        * console support.
+        */
+-      if (co->index >= UART_NR)
++      if (co->index >= SERIAL_AMBA_NR)
+               co->index = 0;
+       uap = amba_ports[co->index];
+       if (!uap)
+@@ -643,7 +642,7 @@ static int __init pl010_console_setup(st
+ static struct uart_driver amba_reg;
+ static struct console amba_console = {
+-      .name           = "ttyAM",
++      .name           = SERIAL_AMBA_NAME,
+       .write          = pl010_console_write,
+       .device         = uart_console_device,
+       .setup          = pl010_console_setup,
+@@ -659,11 +658,11 @@ static struct console amba_console = {
+ static struct uart_driver amba_reg = {
+       .owner                  = THIS_MODULE,
+-      .driver_name            = "ttyAM",
+-      .dev_name               = "ttyAM",
++      .driver_name            = SERIAL_AMBA_NAME,
++      .dev_name               = SERIAL_AMBA_NAME,
+       .major                  = SERIAL_AMBA_MAJOR,
+       .minor                  = SERIAL_AMBA_MINOR,
+-      .nr                     = UART_NR,
++      .nr                     = SERIAL_AMBA_NR,
+       .cons                   = AMBA_CONSOLE,
+ };
+Index: linux-2.6.24/drivers/serial/Kconfig
+===================================================================
+--- linux-2.6.24.orig/drivers/serial/Kconfig
++++ linux-2.6.24/drivers/serial/Kconfig
+@@ -303,10 +303,25 @@ config SERIAL_AMBA_PL010
+       help
+         This selects the ARM(R) AMBA(R) PrimeCell PL010 UART.  If you have
+         an Integrator/AP or Integrator/PP2 platform, or if you have a
+-        Cirrus Logic EP93xx CPU, say Y or M here.
++        Cirrus Logic EP93xx CPU or an Infineon ADM5120 SOC, say Y or M here.
+         If unsure, say N.
++config SERIAL_AMBA_PL010_NUMPORTS
++      int "Maximum number of AMBA PL010 serial ports"
++      depends on SERIAL_AMBA_PL010
++      default "8"
++      ---help---
++        Set this to the number of serial ports you want the AMBA PL010 driver
++        to support.
++
++config SERIAL_AMBA_PL010_PORTNAME
++      string "Name of the AMBA PL010 serial ports"
++      depends on SERIAL_AMBA_PL010
++      default "ttyAM"
++      ---help---
++        ::: To be written :::
++
+ config SERIAL_AMBA_PL010_CONSOLE
+       bool "Support for console on AMBA serial port"
+       depends on SERIAL_AMBA_PL010=y