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author | Florian Fainelli <florian@openwrt.org> | 2012-12-06 22:39:43 +0000 |
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committer | Florian Fainelli <florian@openwrt.org> | 2012-12-06 22:39:43 +0000 |
commit | afc2b07be18f32327351c73d1e58f8e27fdc29bd (patch) | |
tree | feb35c59476836dbf48640992af895299ccbb89c /target/linux/adm8668 | |
parent | 2dee2133c5d6a3aa87b341c09c8978dd771edb94 (diff) | |
download | openwrt-afc2b07be18f32327351c73d1e58f8e27fdc29bd.tar.gz openwrt-afc2b07be18f32327351c73d1e58f8e27fdc29bd.tar.bz2 openwrt-afc2b07be18f32327351c73d1e58f8e27fdc29bd.zip |
get rid of the specific UART driver and use AMBA PL010
Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 34548
Diffstat (limited to 'target/linux/adm8668')
11 files changed, 554 insertions, 698 deletions
diff --git a/target/linux/adm8668/config-3.3 b/target/linux/adm8668/config-3.3 index efdab2e0a2..217daec861 100644 --- a/target/linux/adm8668/config-3.3 +++ b/target/linux/adm8668/config-3.3 @@ -3,6 +3,8 @@ CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y CONFIG_ARCH_DISCARD_MEMBLOCK=y CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_ARCH_SUSPEND_POSSIBLE=y +CONFIG_ARM_AMBA=y +# CONFIG_ARM_SP805_WATCHDOG is not set CONFIG_CEVT_R4K=y CONFIG_CEVT_R4K_LIB=y CONFIG_CMDLINE="console=ttyS0 earlyprintk" @@ -69,8 +71,12 @@ CONFIG_PCI_DOMAINS=y CONFIG_PERF_USE_VMALLOC=y # CONFIG_PREEMPT_RCU is not set # CONFIG_SCSI_DMA is not set -CONFIG_SERIAL_ADM8668=y -CONFIG_SERIAL_ADM8668_CONSOLE=y +# CONFIG_SERIAL_8250 is not set +CONFIG_SERIAL_AMBA_PL010=y +CONFIG_SERIAL_AMBA_PL010_CONSOLE=y +CONFIG_SERIAL_AMBA_PL010_NUMPORTS=2 +CONFIG_SERIAL_AMBA_PL010_PORTNAME="ttyS" +# CONFIG_SERIAL_AMBA_PL011 is not set CONFIG_SWAP_IO_SPACE=y CONFIG_SYS_HAS_CPU_MIPS32_R1=y CONFIG_SYS_HAS_EARLY_PRINTK=y diff --git a/target/linux/adm8668/files/arch/mips/adm8668/Kconfig b/target/linux/adm8668/files/arch/mips/adm8668/Kconfig new file mode 100644 index 0000000000..2e7281ff0a --- /dev/null +++ b/target/linux/adm8668/files/arch/mips/adm8668/Kconfig @@ -0,0 +1,2 @@ +config ARM_AMBA + def_bool y diff --git a/target/linux/adm8668/files/arch/mips/adm8668/Makefile b/target/linux/adm8668/files/arch/mips/adm8668/Makefile index dbd3f12d11..ed45666194 100644 --- a/target/linux/adm8668/files/arch/mips/adm8668/Makefile +++ b/target/linux/adm8668/files/arch/mips/adm8668/Makefile @@ -2,6 +2,6 @@ # something witty --neutronscott # -obj-y := irq.o pci.o prom.o platform.o serial.o proc.o \ - setup.o time.o early_printk.o \ +obj-y := irq.o pci.o prom.o platform.o proc.o \ + setup.o time.o early_printk.o clock.o \ net_core.o net_intr.o diff --git a/target/linux/adm8668/files/arch/mips/adm8668/clock.c b/target/linux/adm8668/files/arch/mips/adm8668/clock.c new file mode 100644 index 0000000000..96d139e177 --- /dev/null +++ b/target/linux/adm8668/files/arch/mips/adm8668/clock.c @@ -0,0 +1,56 @@ +/* + * ADM8668 minimal clock support + * + * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org> + * + * Licensed under the terms of the GPLv2 + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/clk.h> + +#include <adm8668.h> + +struct clk { + unsigned long rate; +}; + +static struct clk uart_clk = { + .rate = ADM8668_UARTCLK_FREQ, +}; + +struct clk *clk_get(struct device *dev, const char *id) +{ + const char *name = dev_name(dev); + + if (!strcmp(name, "apb:uart0")) + return &uart_clk; + + return ERR_PTR(-ENOENT); +} +EXPORT_SYMBOL(clk_get); + +int clk_enable(struct clk *clk) +{ + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + return clk->rate; +} +EXPORT_SYMBOL(clk_get_rate); + +void clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_put); diff --git a/target/linux/adm8668/files/arch/mips/adm8668/platform.c b/target/linux/adm8668/files/arch/mips/adm8668/platform.c index 4c158dd749..5030565a2c 100644 --- a/target/linux/adm8668/files/arch/mips/adm8668/platform.c +++ b/target/linux/adm8668/files/arch/mips/adm8668/platform.c @@ -1,5 +1,6 @@ /* * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> + * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive @@ -13,6 +14,9 @@ #include <linux/pci.h> #include <linux/slab.h> #include <linux/ioport.h> +#include <linux/amba/bus.h> +#include <linux/amba/serial.h> + #include <asm/reboot.h> #include <asm/time.h> #include <asm/addrspace.h> @@ -20,23 +24,31 @@ #include <asm/io.h> #include <adm8668.h> -static struct resource uart_resources[] = { - { +static void adm8668_uart_set_mctrl(struct amba_device *dev, + void __iomem *base, + unsigned int mcrtl) +{ +} + +static struct amba_pl010_data adm8668_uart0_data = { + .set_mctrl = adm8668_uart_set_mctrl, +}; + +static struct amba_device adm8668_uart0_device = { + .dev = { + .init_name = "apb:uart0", + .platform_data = &adm8668_uart0_data, + }, + .res = { .start = ADM8668_UART0_BASE, .end = ADM8668_UART0_BASE + 0xF, .flags = IORESOURCE_MEM, }, - { - .start = INT_LVL_UART0, - .flags = IORESOURCE_IRQ, + .irq = { + INT_LVL_UART0, + -1 }, -}; - -static struct platform_device adm8668_uart_device = { - .name = "adm8668_uart", - .id = 0, - .resource = uart_resources, - .num_resources = ARRAY_SIZE(uart_resources), + .periphid = 0x0041010, }; static struct resource eth0_resources[] = { @@ -78,13 +90,18 @@ static struct platform_device adm8668_eth1_device = { }; static struct platform_device *adm8668_devs[] = { - &adm8668_uart_device, &adm8668_eth0_device, &adm8668_eth1_device, }; int __devinit adm8668_devs_register(void) { + int ret; + + ret = amba_device_register(&adm8668_uart0_device, &iomem_resource); + if (ret) + panic("failed to register AMBA UART"); + return platform_add_devices(adm8668_devs, ARRAY_SIZE(adm8668_devs)); } arch_initcall(adm8668_devs_register); diff --git a/target/linux/adm8668/files/arch/mips/adm8668/serial.c b/target/linux/adm8668/files/arch/mips/adm8668/serial.c deleted file mode 100644 index 7d684b8102..0000000000 --- a/target/linux/adm8668/files/arch/mips/adm8668/serial.c +++ /dev/null @@ -1,638 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * ADM8668 serial driver, totally ripped the source from BCM63xx and changed - * all the registers to fit our hardware, and removed all the features that - * I didn't know because our GPL'd serial driver was way lame. - * - * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> - * Derived directly from bcm63xx_uart - * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> - * - */ - -#if defined(CONFIG_SERIAL_ADM8668_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif - -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/module.h> -#include <linux/console.h> -#include <linux/clk.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/sysrq.h> -#include <linux/serial.h> -#include <linux/serial_core.h> -#include <adm8668.h> - -#define ADM8668_NR_UARTS 1 - -static struct uart_port ports[ADM8668_NR_UARTS]; - -/* - * handy uart register accessor - */ -static inline unsigned int adm_uart_readl(struct uart_port *port, - unsigned int offset) -{ - return (*(volatile unsigned int *)(port->membase + offset)); -} - -static inline void adm_uart_writel(struct uart_port *port, - unsigned int value, unsigned int offset) -{ - (*((volatile unsigned int *)(port->membase + offset))) = value; -} - -/* - * serial core request to check if uart tx fifo is empty - */ -static unsigned int adm_uart_tx_empty(struct uart_port *port) -{ - /* we always wait for completion, no buffer is made... */ - return 1; -} - -/* - * serial core request to set RTS and DTR pin state and loopback mode - */ -static void adm_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) -{ -} - -/* - * serial core request to return RI, CTS, DCD and DSR pin state - */ -static unsigned int adm_uart_get_mctrl(struct uart_port *port) -{ - return 0; -} - -/* - * serial core request to disable tx ASAP (used for flow control) - */ -static void adm_uart_stop_tx(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - val &= ~(UART_TX_INT_EN); - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * serial core request to (re)enable tx - */ -static void adm_uart_start_tx(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - val |= UART_TX_INT_EN; - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * serial core request to stop rx, called before port shutdown - */ -static void adm_uart_stop_rx(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - val &= ~UART_RX_INT_EN; - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * serial core request to enable modem status interrupt reporting - */ -static void adm_uart_enable_ms(struct uart_port *port) -{ -} - -/* - * serial core request to start/stop emitting break char - */ -static void adm_uart_break_ctl(struct uart_port *port, int ctl) -{ -} - -/* - * return port type in string format - */ -static const char *adm_uart_type(struct uart_port *port) -{ - return (port->type == PORT_ADM8668) ? "adm8668_uart" : NULL; -} - -/* - * read all chars in rx fifo and send them to core - */ -static void adm_uart_do_rx(struct uart_port *port) -{ - struct tty_struct *tty; - unsigned int max_count; - - /* limit number of char read in interrupt, should not be - * higher than fifo size anyway since we're much faster than - * serial port */ - max_count = 32; - tty = port->state->port.tty; - do { - unsigned int iestat, c, cstat; - char flag; - - /* get overrun/fifo empty information from ier - * register */ - iestat = adm_uart_readl(port, UART_FR_REG); - if (iestat & UART_RX_FIFO_EMPTY) - break; - - /* recieve status */ - cstat = adm_uart_readl(port, UART_RSR_REG); - /* clear errors */ - adm_uart_writel(port, cstat, UART_RSR_REG); - - c = adm_uart_readl(port, UART_DR_REG); - port->icount.rx++; - flag = TTY_NORMAL; - - if (unlikely((cstat & UART_RX_STATUS_MASK))) { - /* do stats first */ - if (cstat & UART_BREAK_ERR) { - port->icount.brk++; - if (uart_handle_break(port)) - continue; - } - - if (cstat & UART_PARITY_ERR) - port->icount.parity++; - if (cstat & UART_FRAMING_ERR) - port->icount.frame++; - if (cstat & UART_OVERRUN_ERR) { - port->icount.overrun++; - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - } - - /* update flag wrt read_status_mask */ - cstat &= port->read_status_mask; - if (cstat & UART_BREAK_ERR) - flag = TTY_BREAK; - if (cstat & UART_FRAMING_ERR) - flag = TTY_FRAME; - if (cstat & UART_PARITY_ERR) - flag = TTY_PARITY; - } - - if (uart_handle_sysrq_char(port, c)) - continue; - - /* fixthis */ - if ((cstat & port->ignore_status_mask) == 0) - tty_insert_flip_char(tty, c, flag); - } while (max_count--); - - tty_flip_buffer_push(tty); -} - -/* - * fill tx fifo with chars to send, stop when fifo is about to be full - * or when all chars have been sent. - */ -static void adm_uart_do_tx(struct uart_port *port) -{ - struct circ_buf *xmit; - - if (port->x_char) { - adm_uart_writel(port, port->x_char, UART_DR_REG); - port->icount.tx++; - port->x_char = 0; - return; - } - - if (uart_tx_stopped(port)) - adm_uart_stop_tx(port); - - xmit = &port->state->xmit; - - if (uart_circ_empty(xmit)) - goto txq_empty; - do - { - while ((adm_uart_readl(port, UART_FR_REG) & UART_TX_FIFO_FULL) != 0) - ; - adm_uart_writel(port, xmit->buf[xmit->tail], UART_DR_REG); - xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); - port->icount.tx++; - if (uart_circ_empty(xmit)) - break; - } while (1); - - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) - uart_write_wakeup(port); - - if (uart_circ_empty(xmit)) - goto txq_empty; - - return; - -txq_empty: - adm_uart_stop_tx(port); -} - -/* - * process uart interrupt - */ -static irqreturn_t adm_uart_interrupt(int irq, void *dev_id) -{ - struct uart_port *port; - unsigned int irqstat; - - port = dev_id; - spin_lock(&port->lock); - - irqstat = adm_uart_readl(port, UART_IIR_REG); - - if (irqstat & (UART_RX_INT|UART_RX_TIMEOUT_INT)) { - adm_uart_do_rx(port); - } - - if (irqstat & UART_TX_INT) { - adm_uart_do_tx(port); - } - spin_unlock(&port->lock); - return IRQ_HANDLED; -} - -/* - * enable rx & tx operation on uart - */ -static void adm_uart_enable(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - // BREAK_INT too - val |= (UART_RX_INT_EN | UART_RX_TIMEOUT_INT_EN); - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * disable rx & tx operation on uart - */ -static void adm_uart_disable(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - val &= ~(UART_TX_INT_EN | UART_RX_INT_EN | UART_RX_TIMEOUT_INT_EN); - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * clear all unread data in rx fifo and unsent data in tx fifo - */ -static void adm_uart_flush(struct uart_port *port) -{ - /* read any pending char to make sure all irq status are - * cleared */ - (void)adm_uart_readl(port, UART_DR_REG); -} - -/* - * serial core request to initialize uart and start rx operation - */ -static int adm_uart_startup(struct uart_port *port) -{ - int ret; - - /* clear any pending external input interrupt */ - (void)adm_uart_readl(port, UART_IIR_REG); - - /* register irq and enable rx interrupts */ - ret = request_irq(port->irq, adm_uart_interrupt, 0, - adm_uart_type(port), port); - if (ret) - return ret; - - adm_uart_enable(port); - - return 0; -} - -/* - * serial core request to flush & disable uart - */ -static void adm_uart_shutdown(struct uart_port *port) -{ - unsigned long flags; - - spin_lock_irqsave(&port->lock, flags); -// adm_uart_writel(port, 0, UART_CR_REG); - spin_unlock_irqrestore(&port->lock, flags); - - adm_uart_disable(port); - adm_uart_flush(port); - free_irq(port->irq, port); -} - -/* - * serial core request to change current uart setting - */ -static void adm_uart_set_termios(struct uart_port *port, - struct ktermios *new, - struct ktermios *old) -{ - port->ignore_status_mask = 0; - uart_update_timeout(port, new->c_cflag, 115200); -} - -/* - * serial core request to claim uart iomem - */ -static int adm_uart_request_port(struct uart_port *port) -{ - unsigned int size = 0xf; - if (!request_mem_region(port->mapbase, size, "adm8668")) { - dev_err(port->dev, "Memory region busy\n"); - return -EBUSY; - } - - port->membase = ioremap(port->mapbase, size); - if (!port->membase) { - dev_err(port->dev, "Unable to map registers\n"); - release_mem_region(port->mapbase, size); - return -EBUSY; - } - return 0; -} - -/* - * serial core request to release uart iomem - */ -static void adm_uart_release_port(struct uart_port *port) -{ - release_mem_region(port->mapbase, 0xf); - iounmap(port->membase); -} - -/* - * serial core request to do any port required autoconfiguration - */ -static void adm_uart_config_port(struct uart_port *port, int flags) -{ - if (flags & UART_CONFIG_TYPE) { - if (adm_uart_request_port(port)) - return; - port->type = PORT_ADM8668; - } -} - -/* - * serial core request to check that port information in serinfo are - * suitable - */ -static int adm_uart_verify_port(struct uart_port *port, - struct serial_struct *serinfo) -{ - if (port->type != PORT_ADM8668) - return -EINVAL; - if (port->irq != serinfo->irq) - return -EINVAL; - if (port->iotype != serinfo->io_type) - return -EINVAL; - if (port->mapbase != (unsigned long)serinfo->iomem_base) - return -EINVAL; - return 0; -} - -/* serial core callbacks */ -static struct uart_ops adm_uart_ops = { - .tx_empty = adm_uart_tx_empty, - .get_mctrl = adm_uart_get_mctrl, - .set_mctrl = adm_uart_set_mctrl, - .start_tx = adm_uart_start_tx, - .stop_tx = adm_uart_stop_tx, - .stop_rx = adm_uart_stop_rx, - .enable_ms = adm_uart_enable_ms, - .break_ctl = adm_uart_break_ctl, - .startup = adm_uart_startup, - .shutdown = adm_uart_shutdown, - .set_termios = adm_uart_set_termios, - .type = adm_uart_type, - .release_port = adm_uart_release_port, - .request_port = adm_uart_request_port, - .config_port = adm_uart_config_port, - .verify_port = adm_uart_verify_port, -}; - -#ifdef CONFIG_SERIAL_ADM8668_CONSOLE -static inline void wait_for_xmitr(struct uart_port *port) -{ - while ((adm_uart_readl(port, UART_FR_REG) & UART_TX_FIFO_FULL) != 0) - ; -} - -/* - * output given char - */ -static void adm_console_putchar(struct uart_port *port, int ch) -{ - wait_for_xmitr(port); - adm_uart_writel(port, ch, UART_DR_REG); -} - -/* - * console core request to output given string - */ -static void adm_console_write(struct console *co, const char *s, - unsigned int count) -{ - struct uart_port *port; - unsigned long flags; - int locked; - - port = &ports[co->index]; - - local_irq_save(flags); - if (port->sysrq) { - /* adm_uart_interrupt() already took the lock */ - locked = 0; - } else if (oops_in_progress) { - locked = spin_trylock(&port->lock); - } else { - spin_lock(&port->lock); - locked = 1; - } - - /* call helper to deal with \r\n */ - uart_console_write(port, s, count, adm_console_putchar); - - /* and wait for char to be transmitted */ - wait_for_xmitr(port); - - if (locked) - spin_unlock(&port->lock); - local_irq_restore(flags); -} - -/* - * console core request to setup given console, find matching uart - * port and setup it. - */ -static int adm_console_setup(struct console *co, char *options) -{ - struct uart_port *port; - int baud = 115200; - int bits = 8; - int parity = 'n'; - int flow = 'n'; - - if (co->index < 0 || co->index >= ADM8668_NR_UARTS) - return -EINVAL; - port = &ports[co->index]; - if (!port->membase) - return -ENODEV; - - if (options) - uart_parse_options(options, &baud, &parity, &bits, &flow); - - return uart_set_options(port, co, baud, parity, bits, flow); -} - -static struct uart_driver adm_uart_driver; - -static struct console adm8668_console = { - .name = "ttyS", - .write = adm_console_write, - .device = uart_console_device, - .setup = adm_console_setup, - .flags = CON_PRINTBUFFER, - .index = -1, - .data = &adm_uart_driver, -}; - -static int __init adm8668_console_init(void) -{ - register_console(&adm8668_console); - return 0; -} - -console_initcall(adm8668_console_init); - -#define ADM8668_CONSOLE (&adm8668_console) -#else -#define ADM8668_CONSOLE NULL -#endif /* CONFIG_SERIAL_ADM8668_CONSOLE */ - -static struct uart_driver adm_uart_driver = { - .owner = THIS_MODULE, - .driver_name = "adm8668_uart", - .dev_name = "ttyS", - .major = TTY_MAJOR, - .minor = 64, - .nr = 1, - .cons = ADM8668_CONSOLE, -}; - -/* - * platform driver probe/remove callback - */ -static int __devinit adm_uart_probe(struct platform_device *pdev) -{ - struct resource *res_mem, *res_irq; - struct uart_port *port; - int ret; - - if (pdev->id < 0 || pdev->id >= ADM8668_NR_UARTS) - return -EINVAL; - - if (ports[pdev->id].membase) - return -EBUSY; - - res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res_mem) - return -ENODEV; - - res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!res_irq) - return -ENODEV; - - port = &ports[pdev->id]; - memset(port, 0, sizeof(*port)); - port->iotype = UPIO_MEM; - port->mapbase = res_mem->start; - port->irq = res_irq->start; - port->ops = &adm_uart_ops; - port->flags = UPF_BOOT_AUTOCONF; - port->dev = &pdev->dev; - port->fifosize = 8; - port->uartclk = ADM8668_UARTCLK_FREQ; - - ret = uart_add_one_port(&adm_uart_driver, port); - if (ret) { - ports[pdev->id].membase = 0; - return ret; - } - platform_set_drvdata(pdev, port); - return 0; -} - -static int __devexit adm_uart_remove(struct platform_device *pdev) -{ - struct uart_port *port; - - port = platform_get_drvdata(pdev); - uart_remove_one_port(&adm_uart_driver, port); - platform_set_drvdata(pdev, NULL); - /* mark port as free */ - ports[pdev->id].membase = 0; - return 0; -} - -/* - * platform driver stuff - */ -static struct platform_driver adm_uart_platform_driver = { - .probe = adm_uart_probe, - .remove = __devexit_p(adm_uart_remove), - .driver = { - .owner = THIS_MODULE, - .name = "adm8668_uart", - }, -}; - -static int __init adm_uart_init(void) -{ - int ret; - - ret = uart_register_driver(&adm_uart_driver); - if (ret) - return ret; - - ret = platform_driver_register(&adm_uart_platform_driver); - if (ret) - uart_unregister_driver(&adm_uart_driver); - - return ret; -} - -static void __exit adm_uart_exit(void) -{ - platform_driver_unregister(&adm_uart_platform_driver); - uart_unregister_driver(&adm_uart_driver); -} - -module_init(adm_uart_init); -module_exit(adm_uart_exit); - -MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>"); -MODULE_DESCRIPTION("ADM8668 integrated uart driver"); -MODULE_LICENSE("GPL"); diff --git a/target/linux/adm8668/files/arch/mips/include/asm/mach-adm8668/asm/sizes.h b/target/linux/adm8668/files/arch/mips/include/asm/mach-adm8668/asm/sizes.h new file mode 100644 index 0000000000..503843db15 --- /dev/null +++ b/target/linux/adm8668/files/arch/mips/include/asm/mach-adm8668/asm/sizes.h @@ -0,0 +1,56 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +/* DO NOT EDIT!! - this file automatically generated + * from .s file by awk -f s2h.awk + */ +/* Size definitions + * Copyright (C) ARM Limited 1998. All rights reserved. + */ + +#ifndef __sizes_h +#define __sizes_h 1 + +/* handy sizes */ +#define SZ_16 0x00000010 +#define SZ_256 0x00000100 +#define SZ_512 0x00000200 + +#define SZ_1K 0x00000400 +#define SZ_4K 0x00001000 +#define SZ_8K 0x00002000 +#define SZ_16K 0x00004000 +#define SZ_64K 0x00010000 +#define SZ_128K 0x00020000 +#define SZ_256K 0x00040000 +#define SZ_512K 0x00080000 + +#define SZ_1M 0x00100000 +#define SZ_2M 0x00200000 +#define SZ_4M 0x00400000 +#define SZ_8M 0x00800000 +#define SZ_16M 0x01000000 +#define SZ_32M 0x02000000 +#define SZ_64M 0x04000000 +#define SZ_128M 0x08000000 +#define SZ_256M 0x10000000 +#define SZ_512M 0x20000000 + +#define SZ_1G 0x40000000 +#define SZ_2G 0x80000000 + +#endif + +/* END */ diff --git a/target/linux/adm8668/patches-3.3/001-adm8668_arch.patch b/target/linux/adm8668/patches-3.3/001-adm8668_arch.patch index 53a627ecc1..541b0bff59 100644 --- a/target/linux/adm8668/patches-3.3/001-adm8668_arch.patch +++ b/target/linux/adm8668/patches-3.3/001-adm8668_arch.patch @@ -10,7 +10,7 @@ include $(patsubst %, $(srctree)/arch/mips/%/Platform, $(platforms)) --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig -@@ -105,6 +105,27 @@ config BCM47XX +@@ -105,6 +105,25 @@ config BCM47XX help Support for BCM47XX based boards @@ -28,8 +28,6 @@ + select SYS_SUPPORTS_32BIT_KERNEL + select DMA_NONCOHERENT + select SWAP_IO_SPACE -+ select SERIAL_ADM8668 -+ select SERIAL_ADM8668_CONSOLE + select SYS_HAS_EARLY_PRINTK + help + ADM8668 board support by neutronscott @@ -38,3 +36,11 @@ config BCM63XX bool "Broadcom BCM63XX based boards" select CEVT_R4K +@@ -813,6 +833,7 @@ config NLM_XLP_BOARD + + endchoice + ++source "arch/mips/adm8668/Kconfig" + source "arch/mips/alchemy/Kconfig" + source "arch/mips/ath79/Kconfig" + source "arch/mips/bcm47xx/Kconfig" diff --git a/target/linux/adm8668/patches-3.3/002-adm8668_uart.patch b/target/linux/adm8668/patches-3.3/002-adm8668_uart.patch deleted file mode 100644 index ed55cbbaa8..0000000000 --- a/target/linux/adm8668/patches-3.3/002-adm8668_uart.patch +++ /dev/null @@ -1,40 +0,0 @@ ---- a/drivers/tty/serial/Kconfig -+++ b/drivers/tty/serial/Kconfig -@@ -1192,6 +1192,25 @@ config SERIAL_BCM63XX_CONSOLE - If you have enabled the serial port on the bcm63xx CPU - you can make it the console by answering Y to this option. - -+config SERIAL_ADM8668 -+ tristate "ADM8668 serial port support" -+ select SERIAL_CORE -+ depends on ADM8668 -+ help -+ If you have an adm8668 CPU, you can enable its onboard -+ serial port by enabling this options. -+ -+ To compile this driver as a module, choose M here: the -+ module will be called adm8668_uart. -+ -+config SERIAL_ADM8668_CONSOLE -+ bool "Console on adm8668 serial port" -+ depends on SERIAL_ADM8668=y -+ select SERIAL_CORE_CONSOLE -+ help -+ If you have enabled the serial port on the adm8668 CPU -+ you can make it the console by answering Y to this option. -+ - config SERIAL_GRLIB_GAISLER_APBUART - tristate "GRLIB APBUART serial support" - depends on OF && SPARC ---- a/include/linux/serial_core.h -+++ b/include/linux/serial_core.h -@@ -211,6 +211,9 @@ - #define PORT_AR933X 99 - - -+/* ADM8668 UART */ -+#define PORT_ADM8668 100 -+ - #ifdef __KERNEL__ - - #include <linux/compiler.h> diff --git a/target/linux/adm8668/patches-3.3/200-amba_pl010_hacks.patch b/target/linux/adm8668/patches-3.3/200-amba_pl010_hacks.patch new file mode 100644 index 0000000000..3c4ea35a1d --- /dev/null +++ b/target/linux/adm8668/patches-3.3/200-amba_pl010_hacks.patch @@ -0,0 +1,378 @@ +--- a/drivers/tty/serial/amba-pl010.c ++++ b/drivers/tty/serial/amba-pl010.c +@@ -49,11 +49,10 @@ + + #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 + +@@ -79,9 +78,9 @@ 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 = __raw_readl(uap->port.membase + UART010_CR); + cr &= ~UART010_CR_TIE; +- writel(cr, uap->port.membase + UART010_CR); ++ __raw_writel(cr, uap->port.membase + UART010_CR); + } + + static void pl010_start_tx(struct uart_port *port) +@@ -89,9 +88,9 @@ 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 = __raw_readl(uap->port.membase + UART010_CR); + cr |= UART010_CR_TIE; +- writel(cr, uap->port.membase + UART010_CR); ++ __raw_writel(cr, uap->port.membase + UART010_CR); + } + + static void pl010_stop_rx(struct uart_port *port) +@@ -99,9 +98,9 @@ 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 = __raw_readl(uap->port.membase + UART010_CR); + cr &= ~(UART010_CR_RIE | UART010_CR_RTIE); +- writel(cr, uap->port.membase + UART010_CR); ++ __raw_writel(cr, uap->port.membase + UART010_CR); + } + + static void pl010_enable_ms(struct uart_port *port) +@@ -109,9 +108,9 @@ 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 = __raw_readl(uap->port.membase + UART010_CR); + cr |= UART010_CR_MSIE; +- 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) +@@ -119,9 +118,9 @@ static void pl010_rx_chars(struct uart_a + struct tty_struct *tty = uap->port.state->port.tty; + unsigned int status, ch, flag, rsr, max_count = 256; + +- status = readb(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 = __raw_readl(uap->port.membase + UART01x_DR); + flag = TTY_NORMAL; + + uap->port.icount.rx++; +@@ -130,9 +129,9 @@ 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 = __raw_readl(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX; + if (unlikely(rsr & UART01x_RSR_ANY)) { +- 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); +@@ -162,7 +161,7 @@ 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 = __raw_readl(uap->port.membase + UART01x_FR); + } + spin_unlock(&uap->port.lock); + tty_flip_buffer_push(tty); +@@ -175,7 +174,7 @@ static void pl010_tx_chars(struct uart_a + 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; +@@ -187,7 +186,7 @@ static void pl010_tx_chars(struct uart_a + + 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)) +@@ -205,9 +204,9 @@ static void pl010_modem_status(struct ua + { + unsigned int status, delta; + +- 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 = __raw_readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY; + + delta = status ^ uap->old_status; + uap->old_status = status; +@@ -235,7 +234,7 @@ static irqreturn_t pl010_int(int irq, vo + + spin_lock(&uap->port.lock); + +- status = readb(uap->port.membase + UART010_IIR); ++ status = __raw_readl(uap->port.membase + UART010_IIR); + if (status) { + do { + if (status & (UART010_IIR_RTIS | UART010_IIR_RIS)) +@@ -248,7 +247,7 @@ static irqreturn_t pl010_int(int irq, vo + if (pass_counter-- == 0) + break; + +- status = readb(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; +@@ -262,7 +261,7 @@ 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 = __raw_readl(uap->port.membase + UART01x_FR); + return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT; + } + +@@ -272,7 +271,7 @@ static unsigned int pl010_get_mctrl(stru + unsigned int result = 0; + unsigned int status; + +- status = readb(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) +@@ -298,12 +297,12 @@ 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 = __raw_readl(uap->port.membase + UART010_LCRH); + if (break_state == -1) + lcr_h |= UART01x_LCRH_BRK; + else + 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); + } + +@@ -335,12 +334,12 @@ 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 = __raw_readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY; + + /* + * Finally, enable interrupts + */ +- 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; +@@ -365,10 +364,10 @@ static void pl010_shutdown(struct uart_p + /* + * 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) & ++ __raw_writel(__raw_readl(uap->port.membase + UART010_LCRH) & + ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN), + uap->port.membase + UART010_LCRH); + +@@ -391,7 +390,7 @@ 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) { +@@ -454,25 +453,25 @@ 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 = __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); + } +@@ -554,7 +553,7 @@ 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 + +@@ -564,10 +563,10 @@ static void pl010_console_putchar(struct + unsigned int status; + + do { +- status = readb(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); ++ __raw_writel(ch, uap->port.membase + UART01x_DR); + } + + static void +@@ -581,8 +580,8 @@ pl010_console_write(struct console *co, + /* + * First save the CR then disable the interrupts + */ +- old_cr = readb(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); + +@@ -591,10 +590,10 @@ pl010_console_write(struct console *co, + * and restore the TCR + */ + do { +- status = readb(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); ++ __raw_writel(old_cr, uap->port.membase + UART010_CR); + + clk_disable(uap->clk); + } +@@ -603,9 +602,9 @@ 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 (__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 = __raw_readl(uap->port.membase + UART010_LCRH); + + *parity = 'n'; + if (lcr_h & UART01x_LCRH_PEN) { +@@ -620,8 +619,8 @@ 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 = __raw_readl(uap->port.membase + UART010_LCRL) | ++ __raw_readl(uap->port.membase + UART010_LCRM) << 8; + *baud = uap->port.uartclk / (16 * (quot + 1)); + } + } +@@ -640,7 +639,7 @@ 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) +@@ -662,7 +661,7 @@ 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, +@@ -678,11 +677,11 @@ 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, + }; + +--- a/drivers/tty/serial/Kconfig ++++ b/drivers/tty/serial/Kconfig +@@ -16,10 +16,25 @@ 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 diff --git a/target/linux/adm8668/patches-3.3/201-amba_bus_hacks.patch b/target/linux/adm8668/patches-3.3/201-amba_bus_hacks.patch new file mode 100644 index 0000000000..2364d2a668 --- /dev/null +++ b/target/linux/adm8668/patches-3.3/201-amba_bus_hacks.patch @@ -0,0 +1,13 @@ +--- a/drivers/amba/bus.c ++++ b/drivers/amba/bus.c +@@ -20,6 +20,10 @@ + #include <asm/irq.h> + #include <asm/sizes.h> + ++#ifndef NO_IRQ ++#define NO_IRQ (-1) ++#endif ++ + #define to_amba_driver(d) container_of(d, struct amba_driver, drv) + + static const struct amba_id * |