diff options
Diffstat (limited to 'arch/arm/mach-stmp378x/stmp378x.c')
| -rw-r--r-- | arch/arm/mach-stmp378x/stmp378x.c | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/arch/arm/mach-stmp378x/stmp378x.c b/arch/arm/mach-stmp378x/stmp378x.c deleted file mode 100644 index ddd49a760fd..00000000000 --- a/arch/arm/mach-stmp378x/stmp378x.c +++ /dev/null @@ -1,299 +0,0 @@ -/* - * Freescale STMP378X platform support - * - * Embedded Alley Solutions, Inc <source@embeddedalley.com> - * - * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved. - * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved. - */ - -/* - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/irq.h> -#include <linux/dma-mapping.h> - -#include <asm/dma.h> -#include <asm/setup.h> -#include <asm/mach-types.h> - -#include <asm/mach/arch.h> -#include <asm/mach/irq.h> -#include <asm/mach/map.h> -#include <asm/mach/time.h> - -#include <mach/pins.h> -#include <mach/pinmux.h> -#include <mach/dma.h> -#include <mach/hardware.h> -#include <mach/system.h> -#include <mach/platform.h> -#include <mach/stmp3xxx.h> -#include <mach/regs-icoll.h> -#include <mach/regs-apbh.h> -#include <mach/regs-apbx.h> -#include <mach/regs-pxp.h> -#include <mach/regs-i2c.h> - -#include "stmp378x.h" -/* - * IRQ handling - */ -static void stmp378x_ack_irq(unsigned int irq) -{ - /* Tell ICOLL to release IRQ line */ - __raw_writel(0, REGS_ICOLL_BASE + HW_ICOLL_VECTOR); - - /* ACK current interrupt */ - __raw_writel(0x01 /* BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0 */, - REGS_ICOLL_BASE + HW_ICOLL_LEVELACK); - - /* Barrier */ - (void)__raw_readl(REGS_ICOLL_BASE + HW_ICOLL_STAT); -} - -static void stmp378x_mask_irq(unsigned int irq) -{ - /* IRQ disable */ - stmp3xxx_clearl(BM_ICOLL_INTERRUPTn_ENABLE, - REGS_ICOLL_BASE + HW_ICOLL_INTERRUPTn + irq * 0x10); -} - -static void stmp378x_unmask_irq(unsigned int irq) -{ - /* IRQ enable */ - stmp3xxx_setl(BM_ICOLL_INTERRUPTn_ENABLE, - REGS_ICOLL_BASE + HW_ICOLL_INTERRUPTn + irq * 0x10); -} - -static struct irq_chip stmp378x_chip = { - .ack = stmp378x_ack_irq, - .mask = stmp378x_mask_irq, - .unmask = stmp378x_unmask_irq, -}; - -void __init stmp378x_init_irq(void) -{ - stmp3xxx_init_irq(&stmp378x_chip); -} - -/* - * DMA interrupt handling - */ -void stmp3xxx_arch_dma_enable_interrupt(int channel) -{ - void __iomem *c1, *c2; - - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - c1 = REGS_APBH_BASE + HW_APBH_CTRL1; - c2 = REGS_APBH_BASE + HW_APBH_CTRL2; - break; - - case STMP3XXX_BUS_APBX: - c1 = REGS_APBX_BASE + HW_APBX_CTRL1; - c2 = REGS_APBX_BASE + HW_APBX_CTRL2; - break; - - default: - return; - } - stmp3xxx_setl(1 << (16 + STMP3XXX_DMA_CHANNEL(channel)), c1); - stmp3xxx_setl(1 << (16 + STMP3XXX_DMA_CHANNEL(channel)), c2); -} -EXPORT_SYMBOL(stmp3xxx_arch_dma_enable_interrupt); - -void stmp3xxx_arch_dma_clear_interrupt(int channel) -{ - void __iomem *c1, *c2; - - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - c1 = REGS_APBH_BASE + HW_APBH_CTRL1; - c2 = REGS_APBH_BASE + HW_APBH_CTRL2; - break; - - case STMP3XXX_BUS_APBX: - c1 = REGS_APBX_BASE + HW_APBX_CTRL1; - c2 = REGS_APBX_BASE + HW_APBX_CTRL2; - break; - - default: - return; - } - stmp3xxx_clearl(1 << STMP3XXX_DMA_CHANNEL(channel), c1); - stmp3xxx_clearl(1 << STMP3XXX_DMA_CHANNEL(channel), c2); -} -EXPORT_SYMBOL(stmp3xxx_arch_dma_clear_interrupt); - -int stmp3xxx_arch_dma_is_interrupt(int channel) -{ - int r = 0; - - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - r = __raw_readl(REGS_APBH_BASE + HW_APBH_CTRL1) & - (1 << STMP3XXX_DMA_CHANNEL(channel)); - break; - - case STMP3XXX_BUS_APBX: - r = __raw_readl(REGS_APBX_BASE + HW_APBX_CTRL1) & - (1 << STMP3XXX_DMA_CHANNEL(channel)); - break; - } - return r; -} -EXPORT_SYMBOL(stmp3xxx_arch_dma_is_interrupt); - -void stmp3xxx_arch_dma_reset_channel(int channel) -{ - unsigned chbit = 1 << STMP3XXX_DMA_CHANNEL(channel); - void __iomem *c0; - u32 mask; - - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - c0 = REGS_APBH_BASE + HW_APBH_CTRL0; - mask = chbit << BP_APBH_CTRL0_RESET_CHANNEL; - break; - case STMP3XXX_BUS_APBX: - c0 = REGS_APBX_BASE + HW_APBX_CHANNEL_CTRL; - mask = chbit << BP_APBX_CHANNEL_CTRL_RESET_CHANNEL; - break; - default: - return; - } - - /* Reset channel and wait for it to complete */ - stmp3xxx_setl(mask, c0); - while (__raw_readl(c0) & mask) - cpu_relax(); -} -EXPORT_SYMBOL(stmp3xxx_arch_dma_reset_channel); - -void stmp3xxx_arch_dma_freeze(int channel) -{ - unsigned chbit = 1 << STMP3XXX_DMA_CHANNEL(channel); - u32 mask = 1 << chbit; - - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - stmp3xxx_setl(mask, REGS_APBH_BASE + HW_APBH_CTRL0); - break; - case STMP3XXX_BUS_APBX: - stmp3xxx_setl(mask, REGS_APBX_BASE + HW_APBX_CHANNEL_CTRL); - break; - } -} -EXPORT_SYMBOL(stmp3xxx_arch_dma_freeze); - -void stmp3xxx_arch_dma_unfreeze(int channel) -{ - unsigned chbit = 1 << STMP3XXX_DMA_CHANNEL(channel); - u32 mask = 1 << chbit; - - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - stmp3xxx_clearl(mask, REGS_APBH_BASE + HW_APBH_CTRL0); - break; - case STMP3XXX_BUS_APBX: - stmp3xxx_clearl(mask, REGS_APBX_BASE + HW_APBX_CHANNEL_CTRL); - break; - } -} -EXPORT_SYMBOL(stmp3xxx_arch_dma_unfreeze); - -/* - * The registers are all very closely mapped, so we might as well map them all - * with a single mapping - * - * Logical Physical - * f0000000 80000000 On-chip registers - * f1000000 00000000 32k on-chip SRAM - */ - -static struct map_desc stmp378x_io_desc[] __initdata = { - { - .virtual = (u32)STMP3XXX_REGS_BASE, - .pfn = __phys_to_pfn(STMP3XXX_REGS_PHBASE), - .length = STMP3XXX_REGS_SIZE, - .type = MT_DEVICE, - }, - { - .virtual = (u32)STMP3XXX_OCRAM_BASE, - .pfn = __phys_to_pfn(STMP3XXX_OCRAM_PHBASE), - .length = STMP3XXX_OCRAM_SIZE, - .type = MT_DEVICE, - }, -}; - - -static u64 common_dmamask = DMA_BIT_MASK(32); - -/* - * devices that are present only on stmp378x, not on all 3xxx boards: - * PxP - * I2C - */ -static struct resource pxp_resource[] = { - { - .flags = IORESOURCE_MEM, - .start = REGS_PXP_PHYS, - .end = REGS_PXP_PHYS + REGS_PXP_SIZE, - }, { - .flags = IORESOURCE_IRQ, - .start = IRQ_PXP, - .end = IRQ_PXP, - }, -}; - -struct platform_device stmp378x_pxp = { - .name = "stmp3xxx-pxp", - .id = -1, - .dev = { - .dma_mask = &common_dmamask, - .coherent_dma_mask = DMA_BIT_MASK(32), - }, - .num_resources = ARRAY_SIZE(pxp_resource), - .resource = pxp_resource, -}; - -static struct resource i2c_resources[] = { - { - .flags = IORESOURCE_IRQ, - .start = IRQ_I2C_ERROR, - .end = IRQ_I2C_ERROR, - }, { - .flags = IORESOURCE_MEM, - .start = REGS_I2C_PHYS, - .end = REGS_I2C_PHYS + REGS_I2C_SIZE, - }, { - .flags = IORESOURCE_DMA, - .start = STMP3XXX_DMA(3, STMP3XXX_BUS_APBX), - .end = STMP3XXX_DMA(3, STMP3XXX_BUS_APBX), - }, -}; - -struct platform_device stmp378x_i2c = { - .name = "i2c_stmp3xxx", - .id = 0, - .dev = { - .dma_mask = &common_dmamask, - .coherent_dma_mask = DMA_BIT_MASK(32), - }, - .resource = i2c_resources, - .num_resources = ARRAY_SIZE(i2c_resources), -}; - -void __init stmp378x_map_io(void) -{ - iotable_init(stmp378x_io_desc, ARRAY_SIZE(stmp378x_io_desc)); -} |