diff options
Diffstat (limited to 'target/linux/adm5120/patches/200-amba_pl010_hacks.patch')
| -rw-r--r-- | target/linux/adm5120/patches/200-amba_pl010_hacks.patch | 297 |
1 files changed, 297 insertions, 0 deletions
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 index 0000000000..22f5083465 --- /dev/null +++ b/target/linux/adm5120/patches/200-amba_pl010_hacks.patch @@ -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 |