Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751500Ab3ELEXp (ORCPT ); Sun, 12 May 2013 00:23:45 -0400 Received: from mail-da0-f45.google.com ([209.85.210.45]:61509 "EHLO mail-da0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751129Ab3ELEX3 (ORCPT ); Sun, 12 May 2013 00:23:29 -0400 From: Daniel Tang To: linux-arm-kernel@lists.infradead.org, linux@arm.linux.org.uk Cc: Daniel Tang , Linus Walleij , Arnd Bergmann , "fabian@ritter-vogt.de Vogt" , Lionel Debroux , linux-kernel@vger.kernel.org Subject: [RFC PATCHv3 1/6] arm: Initial TI-Nspire support Date: Sun, 12 May 2013 14:22:56 +1000 Message-Id: <1368332581-94691-2-git-send-email-dt.tangr@gmail.com> X-Mailer: git-send-email 1.8.1.3 In-Reply-To: <1368332581-94691-1-git-send-email-dt.tangr@gmail.com> References: <1368332581-94691-1-git-send-email-dt.tangr@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 12069 Lines: 429 Signed-off-by: Daniel Tang --- arch/arm/Kconfig | 2 + arch/arm/Kconfig.debug | 16 +++++ arch/arm/Makefile | 1 + arch/arm/include/debug/nspire.S | 28 +++++++++ arch/arm/mach-nspire/Kconfig | 15 +++++ arch/arm/mach-nspire/Makefile | 2 + arch/arm/mach-nspire/Makefile.boot | 0 arch/arm/mach-nspire/clcd.c | 117 +++++++++++++++++++++++++++++++++++++ arch/arm/mach-nspire/clcd.h | 14 +++++ arch/arm/mach-nspire/mmio.h | 18 ++++++ arch/arm/mach-nspire/nspire.c | 99 +++++++++++++++++++++++++++++++ 11 files changed, 312 insertions(+) create mode 100644 arch/arm/include/debug/nspire.S create mode 100644 arch/arm/mach-nspire/Kconfig create mode 100644 arch/arm/mach-nspire/Makefile create mode 100644 arch/arm/mach-nspire/Makefile.boot create mode 100644 arch/arm/mach-nspire/clcd.c create mode 100644 arch/arm/mach-nspire/clcd.h create mode 100644 arch/arm/mach-nspire/mmio.h create mode 100644 arch/arm/mach-nspire/nspire.c diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index d423d58..b8cb225 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -963,6 +963,8 @@ source "arch/arm/mach-netx/Kconfig" source "arch/arm/mach-nomadik/Kconfig" +source "arch/arm/mach-nspire/Kconfig" + source "arch/arm/plat-omap/Kconfig" source "arch/arm/mach-omap1/Kconfig" diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 1d41908..fe07941 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -309,6 +309,20 @@ choice Say Y here if you want kernel low-level debugging support on MVEBU based platforms. + config DEBUG_NSPIRE_CLASSIC_UART + bool "Kernel low-level debugging via TI-NSPIRE 8250 UART" + depends on ARCH_NSPIRE + help + Say Y here if you want kernel low-level debugging support + on TI-NSPIRE classic models. + + config DEBUG_NSPIRE_CX_UART + bool "Kernel low-level debugging via TI-NSPIRE PL011 UART" + depends on ARCH_NSPIRE + help + Say Y here if you want kernel low-level debugging support + on TI-NSPIRE CX models. + config DEBUG_NOMADIK_UART bool "Kernel low-level debugging messages via NOMADIK UART" depends on ARCH_NOMADIK @@ -633,6 +647,8 @@ config DEBUG_LL_INCLUDE DEBUG_IMX53_UART ||\ DEBUG_IMX6Q_UART default "debug/mvebu.S" if DEBUG_MVEBU_UART + default "debug/nspire.S" if DEBUG_NSPIRE_CX_UART || \ + DEBUG_NSPIRE_CLASSIC_UART default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART default "debug/nomadik.S" if DEBUG_NOMADIK_UART default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 4737408..a4340d1 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -164,6 +164,7 @@ machine-$(CONFIG_ARCH_MXS) += mxs machine-$(CONFIG_ARCH_MVEBU) += mvebu machine-$(CONFIG_ARCH_NETX) += netx machine-$(CONFIG_ARCH_NOMADIK) += nomadik +machine-$(CONFIG_ARCH_NSPIRE) += nspire machine-$(CONFIG_ARCH_OMAP1) += omap1 machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 machine-$(CONFIG_ARCH_ORION5X) += orion5x diff --git a/arch/arm/include/debug/nspire.S b/arch/arm/include/debug/nspire.S new file mode 100644 index 0000000..886fd27 --- /dev/null +++ b/arch/arm/include/debug/nspire.S @@ -0,0 +1,28 @@ +/* + * linux/arch/arm/include/debug/nspire.S + * + * Copyright (C) 2013 Daniel Tang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, as + * published by the Free Software Foundation. + * + */ + +#define NSPIRE_EARLY_UART_PHYS_BASE 0x90020000 +#define NSPIRE_EARLY_UART_VIRT_BASE 0xfee20000 + +.macro addruart, rp, rv, tmp + ldr \rp, =(NSPIRE_EARLY_UART_PHYS_BASE) @ physical base address + ldr \rv, =(NSPIRE_EARLY_UART_VIRT_BASE) @ virtual base address +.endm + + +#ifdef CONFIG_DEBUG_NSPIRE_CX_UART +#include +#endif + +#ifdef CONFIG_DEBUG_NSPIRE_CLASSIC_UART +#define UART_SHIFT 2 +#include +#endif diff --git a/arch/arm/mach-nspire/Kconfig b/arch/arm/mach-nspire/Kconfig new file mode 100644 index 0000000..a295b18 --- /dev/null +++ b/arch/arm/mach-nspire/Kconfig @@ -0,0 +1,15 @@ +config ARCH_NSPIRE + bool "TI-NSPIRE based" + depends on ARCH_MULTI_V4_V5 + depends on MMU + select CPU_ARM926T + select COMMON_CLK + select GENERIC_CLOCKEVENTS + select SPARSE_IRQ + select ARM_AMBA + select ARM_VIC + select ARM_TIMER_SP804 + select USE_OF + select CLKSRC_OF + help + This enables support for systems using the TI-NSPIRE CPU diff --git a/arch/arm/mach-nspire/Makefile b/arch/arm/mach-nspire/Makefile new file mode 100644 index 0000000..1bec256 --- /dev/null +++ b/arch/arm/mach-nspire/Makefile @@ -0,0 +1,2 @@ +obj-y += nspire.o +obj-y += clcd.o diff --git a/arch/arm/mach-nspire/Makefile.boot b/arch/arm/mach-nspire/Makefile.boot new file mode 100644 index 0000000..e69de29 diff --git a/arch/arm/mach-nspire/clcd.c b/arch/arm/mach-nspire/clcd.c new file mode 100644 index 0000000..a4b9f06 --- /dev/null +++ b/arch/arm/mach-nspire/clcd.c @@ -0,0 +1,117 @@ +/* + * linux/arch/arm/mach-nspire/clcd.c + * + * Copyright (C) 2013 Daniel Tang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, as + * published by the Free Software Foundation. + * + */ + +#include +#include +#include +#include +#include + +static struct clcd_panel nspire_cx_lcd_panel = { + .mode = { + .name = "Color LCD", + .refresh = 60, + .xres = 320, + .yres = 240, + .sync = 0, + .vmode = FB_VMODE_NONINTERLACED, + .pixclock = 1, + .hsync_len = 6, + .vsync_len = 1, + .right_margin = 50, + .left_margin = 38, + .lower_margin = 3, + .upper_margin = 17, + }, + .width = 65, /* ~6.50 cm */ + .height = 49, /* ~4.87 cm */ + .tim2 = TIM2_IPC, + .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), + .bpp = 16, +}; + +static struct clcd_panel nspire_classic_lcd_panel = { + .mode = { + .name = "Grayscale LCD", + .refresh = 60, + .xres = 320, + .yres = 240, + .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + .vmode = FB_VMODE_NONINTERLACED, + .pixclock = 1, + .hsync_len = 6, + .vsync_len = 1, + .right_margin = 6, + .left_margin = 6, + }, + .width = 71, /* 7.11cm */ + .height = 53, /* 5.33cm */ + .tim2 = 0x80007d0, + .cntl = CNTL_LCDMONO8, + .bpp = 8, + .grayscale = 1 +}; + +int nspire_clcd_setup(struct clcd_fb *fb) +{ + struct clcd_panel *panel; + size_t panel_size; + const char *type; + dma_addr_t dma; + int err; + + BUG_ON(!fb->dev->dev.of_node); + + err = of_property_read_string(fb->dev->dev.of_node, "lcd-type", &type); + if (err) { + pr_err("CLCD: Could not find lcd-type property\n"); + return err; + } + + if (!strcmp(type, "cx")) { + panel = &nspire_cx_lcd_panel; + } else if (!strcmp(type, "classic")) { + panel = &nspire_classic_lcd_panel; + } else { + pr_err("CLCD: Unknown lcd-type %s\n", type); + return -EINVAL; + } + + panel_size = ((panel->mode.xres * panel->mode.yres) * panel->bpp) / 8; + panel_size = ALIGN(panel_size, PAGE_SIZE); + + fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, + panel_size, &dma, GFP_KERNEL); + + if (!fb->fb.screen_base) { + pr_err("CLCD: unable to map framebuffer\n"); + return -ENOMEM; + } + + fb->fb.fix.smem_start = dma; + fb->fb.fix.smem_len = panel_size; + fb->panel = panel; + + return 0; +} + +int nspire_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) +{ + return dma_mmap_writecombine(&fb->dev->dev, vma, + fb->fb.screen_base, fb->fb.fix.smem_start, + fb->fb.fix.smem_len); +} + +void nspire_clcd_remove(struct clcd_fb *fb) +{ + dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len, + fb->fb.screen_base, fb->fb.fix.smem_start); +} diff --git a/arch/arm/mach-nspire/clcd.h b/arch/arm/mach-nspire/clcd.h new file mode 100644 index 0000000..8c33d2c --- /dev/null +++ b/arch/arm/mach-nspire/clcd.h @@ -0,0 +1,14 @@ +/* + * linux/arch/arm/mach-nspire/clcd.h + * + * Copyright (C) 2013 Daniel Tang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, as + * published by the Free Software Foundation. + * + */ + +int nspire_clcd_setup(struct clcd_fb *fb); +int nspire_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma); +void nspire_clcd_remove(struct clcd_fb *fb); diff --git a/arch/arm/mach-nspire/mmio.h b/arch/arm/mach-nspire/mmio.h new file mode 100644 index 0000000..9d45f59 --- /dev/null +++ b/arch/arm/mach-nspire/mmio.h @@ -0,0 +1,18 @@ +/* + * linux/arch/arm/mach-nspire/mmio.h + * + * Copyright (C) 2013 Daniel Tang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, as + * published by the Free Software Foundation. + * + */ + +#define NSPIRE_EARLY_UART_PHYS_BASE 0x90020000 +#define NSPIRE_EARLY_UART_VIRT_BASE 0xFEE20000 + +#define NSPIRE_MISC_PHYS_BASE 0x900A0000 +#define NSPIRE_MISC_HWRESET 0x08 + +#define NSPIRE_LCD_PHYS_BASE 0xC0000000 diff --git a/arch/arm/mach-nspire/nspire.c b/arch/arm/mach-nspire/nspire.c new file mode 100644 index 0000000..821f3b2 --- /dev/null +++ b/arch/arm/mach-nspire/nspire.c @@ -0,0 +1,99 @@ +/* + * linux/arch/arm/mach-nspire/nspire.c + * + * Copyright (C) 2013 Daniel Tang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, as + * published by the Free Software Foundation. + * + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include + +#include "mmio.h" +#include "clcd.h" + +static const char *nspire_dt_match[] __initconst = { + "arm,nspire", + "arm,nspire-cx", + "arm,nspire-tp", + "arm,nspire-clp", + NULL, +}; + +static struct map_desc nspire_io_desc[] __initdata = { + { + .virtual = NSPIRE_EARLY_UART_VIRT_BASE, + .pfn = __phys_to_pfn(NSPIRE_EARLY_UART_PHYS_BASE), + .length = SZ_4K, + .type = MT_DEVICE + } +}; + +static void __init nspire_map_io(void) +{ + iotable_init(nspire_io_desc, ARRAY_SIZE(nspire_io_desc)); +} + +static struct clcd_board nspire_clcd_data = { + .name = "LCD", + .caps = CLCD_CAP_ALL, + .check = clcdfb_check, + .decode = clcdfb_decode, + .setup = nspire_clcd_setup, + .mmap = nspire_clcd_mmap, + .remove = nspire_clcd_remove, +}; + + +static struct of_dev_auxdata nspire_auxdata[] __initdata = { + OF_DEV_AUXDATA("arm,pl111", NSPIRE_LCD_PHYS_BASE, + NULL, &nspire_clcd_data), + { } +}; + +static void __init nspire_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, + nspire_auxdata, NULL); +} + +static void __init nspire_init_time(void) +{ + of_clk_init(NULL); + clocksource_of_init(); +} + +static void nspire_restart(char mode, const char *cmd) +{ + void __iomem *base = ioremap(NSPIRE_MISC_PHYS_BASE, SZ_4K); + if (!base) + return; + + writel(2, base + NSPIRE_MISC_HWRESET); +} + +DT_MACHINE_START(NSPIRE, "TI-NSPIRE") + .map_io = nspire_map_io, + .init_irq = irqchip_init, + .init_time = nspire_init_time, + .init_machine = nspire_init, + .dt_compat = nspire_dt_match, + .restart = nspire_restart, +MACHINE_END -- 1.8.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/