diff options
Diffstat (limited to 'arch/arm/mach-stmp37xx/stmp37xx.c')
| -rw-r--r-- | arch/arm/mach-stmp37xx/stmp37xx.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/arch/arm/mach-stmp37xx/stmp37xx.c b/arch/arm/mach-stmp37xx/stmp37xx.c deleted file mode 100644 index a9aed06..0000000 --- a/arch/arm/mach-stmp37xx/stmp37xx.c +++ /dev/null @@ -1,219 +0,0 @@ -/* - * Freescale STMP37XX 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/types.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/platform_device.h> -#include <linux/irq.h> -#include <linux/io.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/stmp3xxx.h> -#include <mach/dma.h> - -#include <mach/platform.h> -#include <mach/regs-icoll.h> -#include <mach/regs-apbh.h> -#include <mach/regs-apbx.h> -#include "stmp37xx.h" - -/* - * IRQ handling - */ -static void stmp37xx_ack_irq(struct irq_data *d) -{ - /* Disable IRQ */ - stmp3xxx_clearl(0x04 << ((d->irq % 4) * 8), - REGS_ICOLL_BASE + HW_ICOLL_PRIORITYn + d->irq / 4 * 0x10); - - /* ACK current interrupt */ - __raw_writel(1, REGS_ICOLL_BASE + HW_ICOLL_LEVELACK); - - /* Barrier */ - (void)__raw_readl(REGS_ICOLL_BASE + HW_ICOLL_STAT); -} - -static void stmp37xx_mask_irq(struct irq_data *d) -{ - /* IRQ disable */ - stmp3xxx_clearl(0x04 << ((d->irq % 4) * 8), - REGS_ICOLL_BASE + HW_ICOLL_PRIORITYn + d->irq / 4 * 0x10); -} - -static void stmp37xx_unmask_irq(struct irq_data *d) -{ - /* IRQ enable */ - stmp3xxx_setl(0x04 << ((d->irq % 4) * 8), - REGS_ICOLL_BASE + HW_ICOLL_PRIORITYn + d->irq / 4 * 0x10); -} - -static struct irq_chip stmp37xx_chip = { - .irq_ack = stmp37xx_ack_irq, - .irq_mask = stmp37xx_mask_irq, - .irq_unmask = stmp37xx_unmask_irq, -}; - -void __init stmp37xx_init_irq(void) -{ - stmp3xxx_init_irq(&stmp37xx_chip); -} - -/* - * DMA interrupt handling - */ -void stmp3xxx_arch_dma_enable_interrupt(int channel) -{ - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - stmp3xxx_setl(1 << (8 + STMP3XXX_DMA_CHANNEL(channel)), - REGS_APBH_BASE + HW_APBH_CTRL1); - break; - - case STMP3XXX_BUS_APBX: - stmp3xxx_setl(1 << (8 + STMP3XXX_DMA_CHANNEL(channel)), - REGS_APBX_BASE + HW_APBX_CTRL1); - break; - } -} -EXPORT_SYMBOL(stmp3xxx_arch_dma_enable_interrupt); - -void stmp3xxx_arch_dma_clear_interrupt(int channel) -{ - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - stmp3xxx_clearl(1 << STMP3XXX_DMA_CHANNEL(channel), - REGS_APBH_BASE + HW_APBH_CTRL1); - break; - - case STMP3XXX_BUS_APBX: - stmp3xxx_clearl(1 << STMP3XXX_DMA_CHANNEL(channel), - REGS_APBX_BASE + HW_APBX_CTRL1); - break; - } -} -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_APBH_BASE + HW_APBH_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); - - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - /* Reset channel and wait for it to complete */ - stmp3xxx_setl(chbit << BP_APBH_CTRL0_RESET_CHANNEL, - REGS_APBH_BASE + HW_APBH_CTRL0); - while (__raw_readl(REGS_APBH_BASE + HW_APBH_CTRL0) & - (chbit << BP_APBH_CTRL0_RESET_CHANNEL)) - cpu_relax(); - break; - - case STMP3XXX_BUS_APBX: - stmp3xxx_setl(chbit << BP_APBX_CTRL0_RESET_CHANNEL, - REGS_APBX_BASE + HW_APBX_CTRL0); - while (__raw_readl(REGS_APBX_BASE + HW_APBX_CTRL0) & - (chbit << BP_APBX_CTRL0_RESET_CHANNEL)) - cpu_relax(); - break; - } -} -EXPORT_SYMBOL(stmp3xxx_arch_dma_reset_channel); - -void stmp3xxx_arch_dma_freeze(int channel) -{ - unsigned chbit = 1 << STMP3XXX_DMA_CHANNEL(channel); - - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - stmp3xxx_setl(1 << chbit, REGS_APBH_BASE + HW_APBH_CTRL0); - break; - case STMP3XXX_BUS_APBX: - stmp3xxx_setl(1 << chbit, REGS_APBH_BASE + HW_APBH_CTRL0); - break; - } -} -EXPORT_SYMBOL(stmp3xxx_arch_dma_freeze); - -void stmp3xxx_arch_dma_unfreeze(int channel) -{ - unsigned chbit = 1 << STMP3XXX_DMA_CHANNEL(channel); - - switch (STMP3XXX_DMA_BUS(channel)) { - case STMP3XXX_BUS_APBH: - stmp3xxx_clearl(1 << chbit, REGS_APBH_BASE + HW_APBH_CTRL0); - break; - case STMP3XXX_BUS_APBX: - stmp3xxx_clearl(1 << chbit, REGS_APBH_BASE + HW_APBH_CTRL0); - 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 stmp37xx_io_desc[] __initdata = { - { - .virtual = (u32)STMP3XXX_REGS_BASE, - .pfn = __phys_to_pfn(STMP3XXX_REGS_PHBASE), - .length = SZ_1M, - .type = MT_DEVICE - }, - { - .virtual = (u32)STMP3XXX_OCRAM_BASE, - .pfn = __phys_to_pfn(STMP3XXX_OCRAM_PHBASE), - .length = STMP3XXX_OCRAM_SIZE, - .type = MT_DEVICE, - }, -}; - -void __init stmp37xx_map_io(void) -{ - iotable_init(stmp37xx_io_desc, ARRAY_SIZE(stmp37xx_io_desc)); -} |