target/linux/ixp4xx/patches-3.3/191-cambria_optional_uart.patch

   1 --- a/arch/arm/mach-ixp4xx/cambria-setup.c
   2 +++ b/arch/arm/mach-ixp4xx/cambria-setup.c
   3 @@ -34,6 +34,7 @@
   4  #include <asm/mach/arch.h>
   5  #include <asm/mach/flash.h>
   6  #include <asm/setup.h>
   7 +#include <linux/irq.h>
   8
   9  struct cambria_board_info {
  10         unsigned char   *model;
  11 @@ -127,6 +128,45 @@ static struct platform_device cambria_ua
  12         .resource       = &cambria_uart_resource,
  13  };
  14
  15 +static struct resource cambria_optional_uart_resources[] = {
  16 +       {
  17 +               .start  = 0x52000000,
  18 +               .end    = 0x52000fff,
  19 +               .flags  = IORESOURCE_MEM
  20 +       },
  21 +       {
  22 +               .start  = 0x53000000,
  23 +               .end    = 0x53000fff,
  24 +               .flags  = IORESOURCE_MEM
  25 +       }
  26 +};
  27 +
  28 +static struct plat_serial8250_port cambria_optional_uart_data[] = {
  29 +       {
  30 +               .flags          = UPF_BOOT_AUTOCONF,
  31 +               .iotype         = UPIO_MEM_DELAY,
  32 +               .regshift       = 0,
  33 +               .uartclk        = 1843200,
  34 +               .rw_delay       = 2,
  35 +       },
  36 +       {
  37 +               .flags          = UPF_BOOT_AUTOCONF,
  38 +               .iotype         = UPIO_MEM_DELAY,
  39 +               .regshift       = 0,
  40 +               .uartclk        = 1843200,
  41 +               .rw_delay       = 2,
  42 +       },
  43 +  { },
  44 +};
  45 +
  46 +static struct platform_device cambria_optional_uart = {
  47 +       .name           = "serial8250",
  48 +       .id             = PLAT8250_DEV_PLATFORM1,
  49 +       .dev.platform_data      = cambria_optional_uart_data,
  50 +       .num_resources  = 2,
  51 +       .resource       = cambria_optional_uart_resources,
  52 +};
  53 +
  54  static struct resource cambria_pata_resources[] = {
  55         {
  56                 .flags  = IORESOURCE_MEM
  57 @@ -283,6 +323,19 @@ static void __init cambria_gw23xx_setup(
  58
  59  static void __init cambria_gw2350_setup(void)
  60  {
  61 +       *IXP4XX_EXP_CS2 = 0xBFFF3C43;
  62 +       irq_set_irq_type(IRQ_IXP4XX_GPIO3, IRQ_TYPE_EDGE_RISING);
  63 +       cambria_optional_uart_data[0].mapbase   = 0x52FF0000;
  64 +       cambria_optional_uart_data[0].membase   = (void __iomem *)ioremap(0x52FF0000, 0x0fff);
  65 +       cambria_optional_uart_data[0].irq               = IRQ_IXP4XX_GPIO3;
  66 +
  67 +       *IXP4XX_EXP_CS3 = 0xBFFF3C43;
  68 +       irq_set_irq_type(IRQ_IXP4XX_GPIO4, IRQ_TYPE_EDGE_RISING);
  69 +       cambria_optional_uart_data[1].mapbase   = 0x53FF0000;
  70 +       cambria_optional_uart_data[1].membase   = (void __iomem *)ioremap(0x53FF0000, 0x0fff);
  71 +       cambria_optional_uart_data[1].irq               = IRQ_IXP4XX_GPIO4;
  72 +
  73 +       platform_device_register(&cambria_optional_uart);
  74         platform_device_register(&cambria_npec_device);
  75         platform_device_register(&cambria_npea_device);
  76
  77 @@ -294,6 +347,19 @@ static void __init cambria_gw2350_setup(
  78
  79  static void __init cambria_gw2358_setup(void)
  80  {
  81 +       *IXP4XX_EXP_CS3 = 0xBFFF3C43;
  82 +       irq_set_irq_type(IRQ_IXP4XX_GPIO3, IRQ_TYPE_EDGE_RISING);
  83 +       cambria_optional_uart_data[0].mapbase   = 0x53FC0000;
  84 +       cambria_optional_uart_data[0].membase   = (void __iomem *)ioremap(0x53FC0000, 0x0fff);
  85 +       cambria_optional_uart_data[0].irq               = IRQ_IXP4XX_GPIO3;
  86 +
  87 +       irq_set_irq_type(IRQ_IXP4XX_GPIO4, IRQ_TYPE_EDGE_RISING);
  88 +       cambria_optional_uart_data[1].mapbase   = 0x53F80000;
  89 +       cambria_optional_uart_data[1].membase   = (void __iomem *)ioremap(0x53F80000, 0x0fff);
  90 +       cambria_optional_uart_data[1].irq               = IRQ_IXP4XX_GPIO4;
  91 +
  92 +       platform_device_register(&cambria_optional_uart);
  93 +
  94         platform_device_register(&cambria_npec_device);
  95         platform_device_register(&cambria_npea_device);
  96
  97 --- a/include/linux/serial_8250.h
  98 +++ b/include/linux/serial_8250.h
  99 @@ -27,6 +27,7 @@ struct plat_serial8250_port {
 100         void            *private_data;
 101         unsigned char   regshift;       /* register shift */
 102         unsigned char   iotype;         /* UPIO_* */
 103 +       unsigned int rw_delay;  /* udelay for slower busses IXP4XX Expansion Bus */
 104         unsigned char   hub6;
 105         upf_t           flags;          /* UPF_* flags */
 106         unsigned int    type;           /* If UPF_FIXED_TYPE */
 107 --- a/include/linux/serial_core.h
 108 +++ b/include/linux/serial_core.h
 109 @@ -324,6 +324,7 @@ struct uart_port {
 110  #define UPIO_AU                        (4)                     /* Au1x00 type IO */
 111  #define UPIO_TSI               (5)                     /* Tsi108/109 type IO */
 112  #define UPIO_RM9000            (6)                     /* RM9000 type IO */
 113 +#define UPIO_MEM_DELAY         (7)
 114
 115         unsigned int            read_status_mask;       /* driver specific */
 116         unsigned int            ignore_status_mask;     /* driver specific */
 117 @@ -368,6 +369,7 @@ struct uart_port {
 118
 119         unsigned int            mctrl;                  /* current modem ctrl settings */
 120         unsigned int            timeout;                /* character-based timeout */
 121 +       unsigned int            rw_delay;               /* udelay for slow busses, IXP4XX Expansion Bus */
 122         unsigned int            type;                   /* port type */
 123         const struct uart_ops   *ops;
 124         unsigned int            custom_divisor;
 125 --- a/drivers/tty/serial/8250/8250.c
 126 +++ b/drivers/tty/serial/8250/8250.c
 127 @@ -400,6 +400,20 @@ static void mem_serial_out(struct uart_p
 128         writeb(value, p->membase + offset);
 129  }
 130
 131 +static unsigned int memdelay_serial_in(struct uart_port *p, int offset)
 132 +{
 133 +       struct uart_8250_port *up = (struct uart_8250_port *)p;
 134 +       udelay(up->port.rw_delay);
 135 +       return mem_serial_in(p, offset);
 136 +}
 137 +
 138 +static void memdelay_serial_out(struct uart_port *p, int offset, int value)
 139 +{
 140 +       struct uart_8250_port *up = (struct uart_8250_port *)p;
 141 +       udelay(up->port.rw_delay);
 142 +       mem_serial_out(p, offset, value);
 143 +}
 144 +
 145  static void mem32_serial_out(struct uart_port *p, int offset, int value)
 146  {
 147         offset = map_8250_out_reg(p, offset) << p->regshift;
 148 @@ -459,6 +473,11 @@ static void set_io_from_upio(struct uart
 149                 p->serial_out = mem32_serial_out;
 150                 break;
 151
 152 +       case UPIO_MEM_DELAY:
 153 +               p->serial_in = memdelay_serial_in;
 154 +               p->serial_out = memdelay_serial_out;
 155 +               break;
 156 +
 157         case UPIO_AU:
 158                 p->serial_in = au_serial_in;
 159                 p->serial_out = au_serial_out;
 160 @@ -481,6 +500,7 @@ serial_out_sync(struct uart_8250_port *u
 161         switch (p->iotype) {
 162         case UPIO_MEM:
 163         case UPIO_MEM32:
 164 +       case UPIO_MEM_DELAY:
 165         case UPIO_AU:
 166                 p->serial_out(p, offset, value);
 167                 p->serial_in(p, UART_LCR);      /* safe, no side-effects */
 168 @@ -2498,6 +2518,7 @@ static int serial8250_request_std_resour
 169         case UPIO_TSI:
 170         case UPIO_MEM32:
 171         case UPIO_MEM:
 172 +       case UPIO_MEM_DELAY:
 173                 if (!up->port.mapbase)
 174                         break;
 175
 176 @@ -2534,6 +2555,7 @@ static void serial8250_release_std_resou
 177         case UPIO_TSI:
 178         case UPIO_MEM32:
 179         case UPIO_MEM:
 180 +       case UPIO_MEM_DELAY:
 181                 if (!up->port.mapbase)
 182                         break;
 183
 184 @@ -3050,6 +3072,7 @@ static int __devinit serial8250_probe(st
 185                 port.set_termios        = p->set_termios;
 186                 port.pm                 = p->pm;
 187                 port.dev                = &dev->dev;
 188 +               port.rw_delay           = p->rw_delay;
 189                 port.irqflags           |= irqflag;
 190                 ret = serial8250_register_port(&port);
 191                 if (ret < 0) {
 192 @@ -3199,6 +3222,7 @@ int serial8250_register_port(struct uart
 193                 uart->port.iotype       = port->iotype;
 194                 uart->port.flags        = port->flags | UPF_BOOT_AUTOCONF;
 195                 uart->port.mapbase      = port->mapbase;
 196 +               uart->port.rw_delay                     = port->rw_delay;
 197                 uart->port.private_data = port->private_data;
 198                 if (port->dev)
 199                         uart->port.dev = port->dev;
 200 --- a/drivers/tty/serial/serial_core.c
 201 +++ b/drivers/tty/serial/serial_core.c
 202 @@ -2021,6 +2021,7 @@ uart_report_port(struct uart_driver *drv
 203                 snprintf(address, sizeof(address),
 204                          "I/O 0x%lx offset 0x%x", port->iobase, port->hub6);
 205                 break;
 206 +       case UPIO_MEM_DELAY:
 207         case UPIO_MEM:
 208         case UPIO_MEM32:
 209         case UPIO_AU:
 210 @@ -2435,6 +2436,7 @@ int uart_match_port(struct uart_port *po
 211         case UPIO_HUB6:
 212                 return (port1->iobase == port2->iobase) &&
 213                        (port1->hub6   == port2->hub6);
 214 +       case UPIO_MEM_DELAY:
 215         case UPIO_MEM:
 216         case UPIO_MEM32:
 217         case UPIO_AU: