diff options
Diffstat (limited to 'arch/arm/plat-orion/common.c')
| -rw-r--r-- | arch/arm/plat-orion/common.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/arch/arm/plat-orion/common.c b/arch/arm/plat-orion/common.c new file mode 100644 index 000000000000..4eac532ae8ae --- /dev/null +++ b/arch/arm/plat-orion/common.c @@ -0,0 +1,171 @@ +/* + * arch/arm/plat-orion/common.c + * + * Marvell Orion SoC common setup code used by multiple mach-/common.c + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/serial_8250.h> + +/* Fill in the resources structure and link it into the platform + device structure. There is always a memory region, and nearly + always an interrupt.*/ +static void fill_resources(struct platform_device *device, + struct resource *resources, + resource_size_t mapbase, + resource_size_t size, + unsigned int irq) +{ + device->resource = resources; + device->num_resources = 1; + resources[0].flags = IORESOURCE_MEM; + resources[0].start = mapbase; + resources[0].end = mapbase + size; + + if (irq != NO_IRQ) { + device->num_resources++; + resources[1].flags = IORESOURCE_IRQ; + resources[1].start = irq; + resources[1].end = irq; + } +} + +/***************************************************************************** + * UART + ****************************************************************************/ +static void __init uart_complete( + struct platform_device *orion_uart, + struct plat_serial8250_port *data, + struct resource *resources, + unsigned int membase, + resource_size_t mapbase, + unsigned int irq, + unsigned int uartclk) +{ + data->mapbase = mapbase; + data->membase = (void __iomem *)membase; + data->irq = irq; + data->uartclk = uartclk; + orion_uart->dev.platform_data = data; + + fill_resources(orion_uart, resources, mapbase, 0xff, irq); + platform_device_register(orion_uart); +} + +/***************************************************************************** + * UART0 + ****************************************************************************/ +static struct plat_serial8250_port orion_uart0_data[] = { + { + .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF, + .iotype = UPIO_MEM, + .regshift = 2, + }, { + }, +}; + +static struct resource orion_uart0_resources[2]; + +static struct platform_device orion_uart0 = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, +}; + +void __init orion_uart0_init(unsigned int membase, + resource_size_t mapbase, + unsigned int irq, + unsigned int uartclk) +{ + uart_complete(&orion_uart0, orion_uart0_data, orion_uart0_resources, + membase, mapbase, irq, uartclk); +} + +/***************************************************************************** + * UART1 + ****************************************************************************/ +static struct plat_serial8250_port orion_uart1_data[] = { + { + .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF, + .iotype = UPIO_MEM, + .regshift = 2, + }, { + }, +}; + +static struct resource orion_uart1_resources[2]; + +static struct platform_device orion_uart1 = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM1, +}; + +void __init orion_uart1_init(unsigned int membase, + resource_size_t mapbase, + unsigned int irq, + unsigned int uartclk) +{ + uart_complete(&orion_uart1, orion_uart1_data, orion_uart1_resources, + membase, mapbase, irq, uartclk); +} + +/***************************************************************************** + * UART2 + ****************************************************************************/ +static struct plat_serial8250_port orion_uart2_data[] = { + { + .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF, + .iotype = UPIO_MEM, + .regshift = 2, + }, { + }, +}; + +static struct resource orion_uart2_resources[2]; + +static struct platform_device orion_uart2 = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM2, +}; + +void __init orion_uart2_init(unsigned int membase, + resource_size_t mapbase, + unsigned int irq, + unsigned int uartclk) +{ + uart_complete(&orion_uart2, orion_uart2_data, orion_uart2_resources, + membase, mapbase, irq, uartclk); +} + +/***************************************************************************** + * UART3 + ****************************************************************************/ +static struct plat_serial8250_port orion_uart3_data[] = { + { + .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF, + .iotype = UPIO_MEM, + .regshift = 2, + }, { + }, +}; + +static struct resource orion_uart3_resources[2]; + +static struct platform_device orion_uart3 = { + .name = "serial8250", + .id = 3, +}; + +void __init orion_uart3_init(unsigned int membase, + resource_size_t mapbase, + unsigned int irq, + unsigned int uartclk) +{ + uart_complete(&orion_uart3, orion_uart3_data, orion_uart3_resources, + membase, mapbase, irq, uartclk); +} |