[adm5120] use __raw_{readl,writel} routines in the uart driver as well

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11561 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/adm5120/patches/200-amba_pl010_hacks.patch b/target/linux/adm5120/patches/200-amba_pl010_hacks.patch
index 97b06ac..39c1dea 100644 (file)
--- a/target/linux/adm5120/patches/200-amba_pl010_hacks.patch
+++ b/target/linux/adm5120/patches/200-amba_pl010_hacks.patch
@@ -14,78 +14,114 @@
  
  #define AMBA_ISR_PASS_LIMIT   256
  
-@@ -82,7 +81,7 @@
+@@ -82,9 +81,9 @@
        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 = __raw_readl(uap->port.membase + UART010_CR);
        cr &= ~UART010_CR_TIE;
-       writel(cr, uap->port.membase + UART010_CR);
+-      writel(cr, uap->port.membase + UART010_CR);
++      __raw_writel(cr, uap->port.membase + UART010_CR);
  }
-@@ -92,7 +91,7 @@
+ 
+ static void pl010_start_tx(struct uart_port *port)
+@@ -92,9 +91,9 @@
        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 = __raw_readl(uap->port.membase + UART010_CR);
        cr |= UART010_CR_TIE;
-       writel(cr, uap->port.membase + UART010_CR);
+-      writel(cr, uap->port.membase + UART010_CR);
++      __raw_writel(cr, uap->port.membase + UART010_CR);
  }
-@@ -102,7 +101,7 @@
+ 
+ static void pl010_stop_rx(struct uart_port *port)
+@@ -102,9 +101,9 @@
        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 = __raw_readl(uap->port.membase + UART010_CR);
        cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
-       writel(cr, uap->port.membase + UART010_CR);
+-      writel(cr, uap->port.membase + UART010_CR);
++      __raw_writel(cr, uap->port.membase + UART010_CR);
  }
-@@ -112,7 +111,7 @@
+ 
+ static void pl010_enable_ms(struct uart_port *port)
+@@ -112,9 +111,9 @@
        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 = __raw_readl(uap->port.membase + UART010_CR);
        cr |= UART010_CR_MSIE;
-       writel(cr, uap->port.membase + UART010_CR);
+-      writel(cr, uap->port.membase + UART010_CR);
++      __raw_writel(cr, uap->port.membase + UART010_CR);
  }
+ 
+ static void pl010_rx_chars(struct uart_amba_port *uap)
 @@ -122,9 +121,9 @@
        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);
++      status = __raw_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);
++              ch = __raw_readl(uap->port.membase + UART01x_DR);
                flag = TTY_NORMAL;
  
                uap->port.icount.rx++;
-@@ -133,7 +132,7 @@
+@@ -133,9 +132,9 @@
                 * 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;
++              rsr = __raw_readl(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
                if (unlikely(rsr & UART01x_RSR_ANY)) {
-                       writel(0, uap->port.membase + UART01x_ECR);
+-                      writel(0, uap->port.membase + UART01x_ECR);
++                      __raw_writel(0, uap->port.membase + UART01x_ECR);
  
+                       if (rsr & UART01x_RSR_BE) {
+                               rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
 @@ -165,7 +164,7 @@
                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);
++              status = __raw_readl(uap->port.membase + UART01x_FR);
        }
        spin_unlock(&uap->port.lock);
        tty_flip_buffer_push(tty);
-@@ -210,7 +209,7 @@
+@@ -178,7 +177,7 @@
+       int count;
+ 
+       if (uap->port.x_char) {
+-              writel(uap->port.x_char, uap->port.membase + UART01x_DR);
++              __raw_writel(uap->port.x_char, uap->port.membase + UART01x_DR);
+               uap->port.icount.tx++;
+               uap->port.x_char = 0;
+               return;
+@@ -190,7 +189,7 @@
+ 
+       count = uap->port.fifosize >> 1;
+       do {
+-              writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
++              __raw_writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
+               xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+               uap->port.icount.tx++;
+               if (uart_circ_empty(xmit))
+@@ -208,9 +207,9 @@
+ {
+       unsigned int status, delta;
  
-       writel(0, uap->port.membase + UART010_ICR);
+-      writel(0, uap->port.membase + UART010_ICR);
++      __raw_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;
++      status = __raw_readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
  
        delta = status ^ uap->old_status;
        uap->old_status = status;
@@ -94,7 +130,7 @@
        spin_lock(&uap->port.lock);
  
 -      status = readb(uap->port.membase + UART010_IIR);
-+      status = readl(uap->port.membase + UART010_IIR);
++      status = __raw_readl(uap->port.membase + UART010_IIR);
        if (status) {
                do {
                        if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
@@ -103,7 +139,7 @@
                                break;
  
 -                      status = readb(uap->port.membase + UART010_IIR);
-+                      status = readl(uap->port.membase + UART010_IIR);
++                      status = __raw_readl(uap->port.membase + UART010_IIR);
                } while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
                                   UART010_IIR_TIS));
                handled = 1;
@@ -112,7 +148,7 @@
  {
        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);
++      unsigned int status = __raw_readl(uap->port.membase + UART01x_FR);
        return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
  }
  
@@ -121,34 +157,50 @@
        unsigned int status;
  
 -      status = readb(uap->port.membase + UART01x_FR);
-+      status = readl(uap->port.membase + UART01x_FR);
++      status = __raw_readl(uap->port.membase + UART01x_FR);
        if (status & UART01x_FR_DCD)
                result |= TIOCM_CAR;
        if (status & UART01x_FR_DSR)
-@@ -301,7 +300,7 @@
+@@ -301,12 +300,12 @@
        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);
++      lcr_h = __raw_readl(uap->port.membase + UART010_LCRH);
        if (break_state == -1)
                lcr_h |= UART01x_LCRH_BRK;
        else
-@@ -334,7 +333,7 @@
+               lcr_h &= ~UART01x_LCRH_BRK;
+-      writel(lcr_h, uap->port.membase + UART010_LCRH);
++      __raw_writel(lcr_h, uap->port.membase + UART010_LCRH);
+       spin_unlock_irqrestore(&uap->port.lock, flags);
+ }
+ 
+@@ -334,12 +333,12 @@
        /*
         * 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;
++      uap->old_status = __raw_readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
  
        /*
         * Finally, enable interrupts
-@@ -365,7 +364,7 @@
-       writel(0, uap->port.membase + UART010_CR);
+        */
+-      writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
++      __raw_writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
+              uap->port.membase + UART010_CR);
+ 
+       return 0;
+@@ -362,10 +361,10 @@
+       /*
+        * disable all interrupts, disable the port
+        */
+-      writel(0, uap->port.membase + UART010_CR);
++      __raw_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) &
++      __raw_writel(__raw_readl(uap->port.membase + UART010_LCRH) &
                ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
               uap->port.membase + UART010_LCRH);
  
@@ -161,15 +213,38 @@
        quot = uart_get_divisor(port, baud);
  
        switch (termios->c_cflag & CSIZE) {
-@@ -450,7 +449,7 @@
+@@ -450,25 +449,25 @@
                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;
++      old_cr = __raw_readl(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
  
        if (UART_ENABLE_MS(port, termios->c_cflag))
                old_cr |= UART010_CR_MSIE;
+ 
+-      writel(0, uap->port.membase + UART010_CR);
++      __raw_writel(0, uap->port.membase + UART010_CR);
+ 
+       /* Set baud rate */
+       quot -= 1;
+-      writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
+-      writel(quot & 0xff, uap->port.membase + UART010_LCRL);
++      __raw_writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
++      __raw_writel(quot & 0xff, uap->port.membase + UART010_LCRL);
+ 
+       /*
+        * ----------v----------v----------v----------v-----
+        * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
+        * ----------^----------^----------^----------^-----
+        */
+-      writel(lcr_h, uap->port.membase + UART010_LCRH);
+-      writel(old_cr, uap->port.membase + UART010_CR);
++      __raw_writel(lcr_h, uap->port.membase + UART010_LCRH);
++      __raw_writel(old_cr, uap->port.membase + UART010_CR);
+ 
+       spin_unlock_irqrestore(&uap->port.lock, flags);
+ }
 @@ -540,7 +539,7 @@
        .verify_port    = pl010_verify_port,
  };
@@ -179,42 +254,52 @@
  
  #ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
  
-@@ -550,7 +549,7 @@
+@@ -550,10 +549,10 @@
        unsigned int status;
  
        do {
 -              status = readb(uap->port.membase + UART01x_FR);
-+              status = readl(uap->port.membase + UART01x_FR);
++              status = __raw_readl(uap->port.membase + UART01x_FR);
                barrier();
        } while (!UART_TX_READY(status));
-       writel(ch, uap->port.membase + UART01x_DR);
-@@ -567,7 +566,7 @@
+-      writel(ch, uap->port.membase + UART01x_DR);
++      __raw_writel(ch, uap->port.membase + UART01x_DR);
+ }
+ 
+ static void
+@@ -567,8 +566,8 @@
        /*
         *      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);
+-      writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
++      old_cr = __raw_readl(uap->port.membase + UART010_CR);
++      __raw_writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
  
        uart_console_write(&uap->port, s, count, pl010_console_putchar);
-@@ -577,7 +576,7 @@
+ 
+@@ -577,10 +576,10 @@
         *      and restore the TCR
         */
        do {
 -              status = readb(uap->port.membase + UART01x_FR);
-+              status = readl(uap->port.membase + UART01x_FR);
++              status = __raw_readl(uap->port.membase + UART01x_FR);
                barrier();
        } while (status & UART01x_FR_BUSY);
-       writel(old_cr, uap->port.membase + UART010_CR);
+-      writel(old_cr, uap->port.membase + UART010_CR);
++      __raw_writel(old_cr, uap->port.membase + UART010_CR);
+ 
+       clk_disable(uap->clk);
+ }
 @@ -589,9 +588,9 @@
  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) {
++      if (__raw_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);
++              lcr_h = __raw_readl(uap->port.membase + UART010_LCRH);
  
                *parity = 'n';
                if (lcr_h & UART01x_LCRH_PEN) {
@@ -224,8 +309,8 @@
  
 -              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;
++              quot = __raw_readl(uap->port.membase + UART010_LCRL) |
++                     __raw_readl(uap->port.membase + UART010_LCRM) << 8;
                *baud = uap->port.uartclk / (16 * (quot + 1));
        }
  }