target/linux/adm5120/patches/200-amba_pl010_hacks.patch

   1 Index: linux-2.6.24/drivers/serial/amba-pl010.c
   2 ===================================================================
   3 --- linux-2.6.24.orig/drivers/serial/amba-pl010.c
   4 +++ linux-2.6.24/drivers/serial/amba-pl010.c
   5 @@ -52,11 +52,10 @@
   6
   7  #include <asm/io.h>
   8
   9 -#define UART_NR                8
  10 -
  11  #define SERIAL_AMBA_MAJOR      204
  12  #define SERIAL_AMBA_MINOR      16
  13 -#define SERIAL_AMBA_NR         UART_NR
  14 +#define SERIAL_AMBA_NR         CONFIG_SERIAL_AMBA_PL010_NUMPORTS
  15 +#define SERIAL_AMBA_NAME       CONFIG_SERIAL_AMBA_PL010_PORTNAME
  16
  17  #define AMBA_ISR_PASS_LIMIT    256
  18
  19 @@ -82,7 +81,7 @@ static void pl010_stop_tx(struct uart_po
  20         struct uart_amba_port *uap = (struct uart_amba_port *)port;
  21         unsigned int cr;
  22
  23 -       cr = readb(uap->port.membase + UART010_CR);
  24 +       cr = readl(uap->port.membase + UART010_CR);
  25         cr &= ~UART010_CR_TIE;
  26         writel(cr, uap->port.membase + UART010_CR);
  27  }
  28 @@ -92,7 +91,7 @@ static void pl010_start_tx(struct uart_p
  29         struct uart_amba_port *uap = (struct uart_amba_port *)port;
  30         unsigned int cr;
  31
  32 -       cr = readb(uap->port.membase + UART010_CR);
  33 +       cr = readl(uap->port.membase + UART010_CR);
  34         cr |= UART010_CR_TIE;
  35         writel(cr, uap->port.membase + UART010_CR);
  36  }
  37 @@ -102,7 +101,7 @@ static void pl010_stop_rx(struct uart_po
  38         struct uart_amba_port *uap = (struct uart_amba_port *)port;
  39         unsigned int cr;
  40
  41 -       cr = readb(uap->port.membase + UART010_CR);
  42 +       cr = readl(uap->port.membase + UART010_CR);
  43         cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
  44         writel(cr, uap->port.membase + UART010_CR);
  45  }
  46 @@ -112,7 +111,7 @@ static void pl010_enable_ms(struct uart_
  47         struct uart_amba_port *uap = (struct uart_amba_port *)port;
  48         unsigned int cr;
  49
  50 -       cr = readb(uap->port.membase + UART010_CR);
  51 +       cr = readl(uap->port.membase + UART010_CR);
  52         cr |= UART010_CR_MSIE;
  53         writel(cr, uap->port.membase + UART010_CR);
  54  }
  55 @@ -122,9 +121,9 @@ static void pl010_rx_chars(struct uart_a
  56         struct tty_struct *tty = uap->port.info->tty;
  57         unsigned int status, ch, flag, rsr, max_count = 256;
  58
  59 -       status = readb(uap->port.membase + UART01x_FR);
  60 +       status = readl(uap->port.membase + UART01x_FR);
  61         while (UART_RX_DATA(status) && max_count--) {
  62 -               ch = readb(uap->port.membase + UART01x_DR);
  63 +               ch = readl(uap->port.membase + UART01x_DR);
  64                 flag = TTY_NORMAL;
  65
  66                 uap->port.icount.rx++;
  67 @@ -133,7 +132,7 @@ static void pl010_rx_chars(struct uart_a
  68                  * Note that the error handling code is
  69                  * out of the main execution path
  70                  */
  71 -               rsr = readb(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
  72 +               rsr = readl(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
  73                 if (unlikely(rsr & UART01x_RSR_ANY)) {
  74                         writel(0, uap->port.membase + UART01x_ECR);
  75
  76 @@ -165,7 +164,7 @@ static void pl010_rx_chars(struct uart_a
  77                 uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
  78
  79         ignore_char:
  80 -               status = readb(uap->port.membase + UART01x_FR);
  81 +               status = readl(uap->port.membase + UART01x_FR);
  82         }
  83         spin_unlock(&uap->port.lock);
  84         tty_flip_buffer_push(tty);
  85 @@ -210,7 +209,7 @@ static void pl010_modem_status(struct ua
  86
  87         writel(0, uap->port.membase + UART010_ICR);
  88
  89 -       status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
  90 +       status = readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
  91
  92         delta = status ^ uap->old_status;
  93         uap->old_status = status;
  94 @@ -238,7 +237,7 @@ static irqreturn_t pl010_int(int irq, vo
  95
  96         spin_lock(&uap->port.lock);
  97
  98 -       status = readb(uap->port.membase + UART010_IIR);
  99 +       status = readl(uap->port.membase + UART010_IIR);
 100         if (status) {
 101                 do {
 102                         if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
 103 @@ -251,7 +250,7 @@ static irqreturn_t pl010_int(int irq, vo
 104                         if (pass_counter-- == 0)
 105                                 break;
 106
 107 -                       status = readb(uap->port.membase + UART010_IIR);
 108 +                       status = readl(uap->port.membase + UART010_IIR);
 109                 } while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
 110                                    UART010_IIR_TIS));
 111                 handled = 1;
 112 @@ -265,7 +264,7 @@ static irqreturn_t pl010_int(int irq, vo
 113  static unsigned int pl010_tx_empty(struct uart_port *port)
 114  {
 115         struct uart_amba_port *uap = (struct uart_amba_port *)port;
 116 -       unsigned int status = readb(uap->port.membase + UART01x_FR);
 117 +       unsigned int status = readl(uap->port.membase + UART01x_FR);
 118         return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
 119  }
 120
 121 @@ -275,7 +274,7 @@ static unsigned int pl010_get_mctrl(stru
 122         unsigned int result = 0;
 123         unsigned int status;
 124
 125 -       status = readb(uap->port.membase + UART01x_FR);
 126 +       status = readl(uap->port.membase + UART01x_FR);
 127         if (status & UART01x_FR_DCD)
 128                 result |= TIOCM_CAR;
 129         if (status & UART01x_FR_DSR)
 130 @@ -301,7 +300,7 @@ static void pl010_break_ctl(struct uart_
 131         unsigned int lcr_h;
 132
 133         spin_lock_irqsave(&uap->port.lock, flags);
 134 -       lcr_h = readb(uap->port.membase + UART010_LCRH);
 135 +       lcr_h = readl(uap->port.membase + UART010_LCRH);
 136         if (break_state == -1)
 137                 lcr_h |= UART01x_LCRH_BRK;
 138         else
 139 @@ -334,7 +333,7 @@ static int pl010_startup(struct uart_por
 140         /*
 141          * initialise the old status of the modem signals
 142          */
 143 -       uap->old_status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
 144 +       uap->old_status = readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
 145
 146         /*
 147          * Finally, enable interrupts
 148 @@ -365,7 +364,7 @@ static void pl010_shutdown(struct uart_p
 149         writel(0, uap->port.membase + UART010_CR);
 150
 151         /* disable break condition and fifos */
 152 -       writel(readb(uap->port.membase + UART010_LCRH) &
 153 +       writel(readl(uap->port.membase + UART010_LCRH) &
 154                 ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
 155                uap->port.membase + UART010_LCRH);
 156
 157 @@ -387,7 +386,7 @@ pl010_set_termios(struct uart_port *port
 158         /*
 159          * Ask the core to calculate the divisor for us.
 160          */
 161 -       baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16);
 162 +       baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16);
 163         quot = uart_get_divisor(port, baud);
 164
 165         switch (termios->c_cflag & CSIZE) {
 166 @@ -450,7 +449,7 @@ pl010_set_termios(struct uart_port *port
 167                 uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
 168
 169         /* first, disable everything */
 170 -       old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
 171 +       old_cr = readl(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
 172
 173         if (UART_ENABLE_MS(port, termios->c_cflag))
 174                 old_cr |= UART010_CR_MSIE;
 175 @@ -540,7 +539,7 @@ static struct uart_ops amba_pl010_pops =
 176         .verify_port    = pl010_verify_port,
 177  };
 178
 179 -static struct uart_amba_port *amba_ports[UART_NR];
 180 +static struct uart_amba_port *amba_ports[SERIAL_AMBA_NR];
 181
 182  #ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
 183
 184 @@ -550,7 +549,7 @@ static void pl010_console_putchar(struct
 185         unsigned int status;
 186
 187         do {
 188 -               status = readb(uap->port.membase + UART01x_FR);
 189 +               status = readl(uap->port.membase + UART01x_FR);
 190                 barrier();
 191         } while (!UART_TX_READY(status));
 192         writel(ch, uap->port.membase + UART01x_DR);
 193 @@ -567,7 +566,7 @@ pl010_console_write(struct console *co,
 194         /*
 195          *      First save the CR then disable the interrupts
 196          */
 197 -       old_cr = readb(uap->port.membase + UART010_CR);
 198 +       old_cr = readl(uap->port.membase + UART010_CR);
 199         writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
 200
 201         uart_console_write(&uap->port, s, count, pl010_console_putchar);
 202 @@ -577,7 +576,7 @@ pl010_console_write(struct console *co,
 203          *      and restore the TCR
 204          */
 205         do {
 206 -               status = readb(uap->port.membase + UART01x_FR);
 207 +               status = readl(uap->port.membase + UART01x_FR);
 208                 barrier();
 209         } while (status & UART01x_FR_BUSY);
 210         writel(old_cr, uap->port.membase + UART010_CR);
 211 @@ -589,9 +588,9 @@ static void __init
 212  pl010_console_get_options(struct uart_amba_port *uap, int *baud,
 213                              int *parity, int *bits)
 214  {
 215 -       if (readb(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
 216 +       if (readl(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
 217                 unsigned int lcr_h, quot;
 218 -               lcr_h = readb(uap->port.membase + UART010_LCRH);
 219 +               lcr_h = readl(uap->port.membase + UART010_LCRH);
 220
 221                 *parity = 'n';
 222                 if (lcr_h & UART01x_LCRH_PEN) {
 223 @@ -606,8 +605,8 @@ pl010_console_get_options(struct uart_am
 224                 else
 225                         *bits = 8;
 226
 227 -               quot = readb(uap->port.membase + UART010_LCRL) |
 228 -                      readb(uap->port.membase + UART010_LCRM) << 8;
 229 +               quot = readl(uap->port.membase + UART010_LCRL) |
 230 +                      readl(uap->port.membase + UART010_LCRM) << 8;
 231                 *baud = uap->port.uartclk / (16 * (quot + 1));
 232         }
 233  }
 234 @@ -625,7 +624,7 @@ static int __init pl010_console_setup(st
 235          * if so, search for the first available port that does have
 236          * console support.
 237          */
 238 -       if (co->index >= UART_NR)
 239 +       if (co->index >= SERIAL_AMBA_NR)
 240                 co->index = 0;
 241         uap = amba_ports[co->index];
 242         if (!uap)
 243 @@ -643,7 +642,7 @@ static int __init pl010_console_setup(st
 244
 245  static struct uart_driver amba_reg;
 246  static struct console amba_console = {
 247 -       .name           = "ttyAM",
 248 +       .name           = SERIAL_AMBA_NAME,
 249         .write          = pl010_console_write,
 250         .device         = uart_console_device,
 251         .setup          = pl010_console_setup,
 252 @@ -659,11 +658,11 @@ static struct console amba_console = {
 253
 254  static struct uart_driver amba_reg = {
 255         .owner                  = THIS_MODULE,
 256 -       .driver_name            = "ttyAM",
 257 -       .dev_name               = "ttyAM",
 258 +       .driver_name            = SERIAL_AMBA_NAME,
 259 +       .dev_name               = SERIAL_AMBA_NAME,
 260         .major                  = SERIAL_AMBA_MAJOR,
 261         .minor                  = SERIAL_AMBA_MINOR,
 262 -       .nr                     = UART_NR,
 263 +       .nr                     = SERIAL_AMBA_NR,
 264         .cons                   = AMBA_CONSOLE,
 265  };
 266
 267 Index: linux-2.6.24/drivers/serial/Kconfig
 268 ===================================================================
 269 --- linux-2.6.24.orig/drivers/serial/Kconfig
 270 +++ linux-2.6.24/drivers/serial/Kconfig
 271 @@ -303,10 +303,25 @@ config SERIAL_AMBA_PL010
 272         help
 273           This selects the ARM(R) AMBA(R) PrimeCell PL010 UART.  If you have
 274           an Integrator/AP or Integrator/PP2 platform, or if you have a
 275 -         Cirrus Logic EP93xx CPU, say Y or M here.
 276 +         Cirrus Logic EP93xx CPU or an Infineon ADM5120 SOC, say Y or M here.
 277
 278           If unsure, say N.
 279
 280 +config SERIAL_AMBA_PL010_NUMPORTS
 281 +       int "Maximum number of AMBA PL010 serial ports"
 282 +       depends on SERIAL_AMBA_PL010
 283 +       default "8"
 284 +       ---help---
 285 +         Set this to the number of serial ports you want the AMBA PL010 driver
 286 +         to support.
 287 +
 288 +config SERIAL_AMBA_PL010_PORTNAME
 289 +       string "Name of the AMBA PL010 serial ports"
 290 +       depends on SERIAL_AMBA_PL010
 291 +       default "ttyAM"
 292 +       ---help---
 293 +         ::: To be written :::
 294 +
 295  config SERIAL_AMBA_PL010_CONSOLE
 296         bool "Support for console on AMBA serial port"
 297         depends on SERIAL_AMBA_PL010=y