diff options
Diffstat (limited to 'arch/arm/plat-mxc/devices/platform-imx_vpu.c')
| -rw-r--r-- | arch/arm/plat-mxc/devices/platform-imx_vpu.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/devices/platform-imx_vpu.c b/arch/arm/plat-mxc/devices/platform-imx_vpu.c new file mode 100644 index 00000000000..a3a3927e535 --- /dev/null +++ b/arch/arm/plat-mxc/devices/platform-imx_vpu.c @@ -0,0 +1,149 @@ +/* + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. + * Jason Chen <jason.chen@freescale.com> + * + * 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 <mach/hardware.h> +#include <mach/devices-common.h> + +#define imx5_vpu_data_entry_single(soc, flag, size, vpu_reset, vpu_pg) \ + { \ + .iobase = soc ## _VPU_BASE_ADDR, \ + .irq_ipi = soc ## _INT_VPU, \ + .iram_enable = flag, \ + .iram_size = size, \ + .reset = vpu_reset, \ + .pg = vpu_pg, \ + } + +#define imx6_vpu_data_entry_single(soc, flag, size, vpu_reset, vpu_pg) \ + { \ + .iobase = soc ## _VPU_BASE_ADDR, \ + .irq_ipi = soc ## _INT_VPU_IPI, \ + .irq_jpg = soc ## _INT_VPU_JPG, \ + .iram_enable = flag, \ + .iram_size = size, \ + .reset = vpu_reset, \ + .pg = vpu_pg, \ + } + +#ifdef CONFIG_SOC_IMX51 +void mx51_vpu_reset(void) +{ + u32 reg; + void __iomem *src_base; + + src_base = ioremap(MX51_SRC_BASE_ADDR, PAGE_SIZE); + + /* mask interrupt due to vpu passed reset */ + reg = __raw_readl(src_base + 0x18); + reg |= 0x02; + __raw_writel(reg, src_base + 0x18); + + reg = __raw_readl(src_base); + reg |= 0x5; /* warm reset vpu */ + __raw_writel(reg, src_base); + while (__raw_readl(src_base) & 0x04) + ; + + iounmap(src_base); +} + +void mx51_vpu_pg(int enable) +{ + if (enable) { + __raw_writel(MXC_PGCR_PCR, MX51_PGC_VPU_PGCR); + __raw_writel(MXC_PGSR_PSR, MX51_PGC_VPU_PGSR); + } else { + __raw_writel(0x0, MX51_PGC_VPU_PGCR); + if (__raw_readl(MX51_PGC_VPU_PGSR) & MXC_PGSR_PSR) + printk(KERN_DEBUG "power gating successful\n"); + __raw_writel(MXC_PGSR_PSR, MX51_PGC_VPU_PGSR); + } +} +const struct imx_vpu_data imx51_vpu_data __initconst = + imx5_vpu_data_entry_single(MX51, + false, 0x14000, mx51_vpu_reset, mx51_vpu_pg); +#endif + +#ifdef CONFIG_SOC_IMX53 +void mx53_vpu_reset(void) +{ + u32 reg; + void __iomem *src_base; + + src_base = ioremap(MX53_SRC_BASE_ADDR, PAGE_SIZE); + + /* mask interrupt due to vpu passed reset */ + reg = __raw_readl(src_base + 0x18); + reg |= 0x02; + __raw_writel(reg, src_base + 0x18); + + reg = __raw_readl(src_base); + reg |= 0x5; /* warm reset vpu */ + __raw_writel(reg, src_base); + while (__raw_readl(src_base) & 0x04) + ; + + iounmap(src_base); +} + +void mx53_vpu_pg(int enable) +{ + if (enable) { + __raw_writel(MXC_PGCR_PCR, MX53_PGC_VPU_PGCR); + __raw_writel(MXC_PGSR_PSR, MX53_PGC_VPU_PGSR); + } else { + __raw_writel(0x0, MX53_PGC_VPU_PGCR); + if (__raw_readl(MX53_PGC_VPU_PGSR) & MXC_PGSR_PSR) + printk(KERN_DEBUG "power gating successful\n"); + __raw_writel(MXC_PGSR_PSR, MX53_PGC_VPU_PGSR); + } +} + +const struct imx_vpu_data imx53_vpu_data __initconst = + imx5_vpu_data_entry_single(MX53, + true, 0x14000, mx53_vpu_reset, mx53_vpu_pg); +#endif + +#ifdef CONFIG_SOC_IMX6Q +const struct imx_vpu_data imx6q_vpu_data __initconst = + imx6_vpu_data_entry_single(MX6Q, + true, 0x21000, NULL, NULL); +#endif + +struct platform_device *__init imx_add_vpu( + const struct imx_vpu_data *data) +{ + struct mxc_vpu_platform_data pdata; + struct resource res[] = { + { + .start = data->iobase, + .end = data->iobase + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, { + .start = data->irq_ipi, + .end = data->irq_ipi, + .flags = IORESOURCE_IRQ, + }, +#ifdef CONFIG_SOC_IMX6Q + { + .start = data->irq_jpg, + .end = data->irq_jpg, + .flags = IORESOURCE_IRQ, + }, +#endif + }; + + pdata.reset = data->reset; + pdata.pg = data->pg; + pdata.iram_enable = data->iram_enable; + pdata.iram_size = data->iram_size; + + return imx_add_platform_device("mxc_vpu", -1, + res, ARRAY_SIZE(res), &pdata, sizeof(pdata)); +} + |