This patch converts OMAP1 dual mode timers into platform devices and adds support for registering them through generic linux platform device layer.
Signed-off-by: Thara Gopinath <[email protected]> --- arch/arm/mach-omap1/Makefile | 1 + arch/arm/mach-omap1/dmtimers.c | 148 ++++++++++++++++++++++++++++++++++++++++ arch/arm/mach-omap1/timer32k.c | 3 - 3 files changed, 149 insertions(+), 3 deletions(-) create mode 100644 arch/arm/mach-omap1/dmtimers.c diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile index b6a537c..9abc6b7 100644 --- a/arch/arm/mach-omap1/Makefile +++ b/arch/arm/mach-omap1/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o obj-$(CONFIG_OMAP_MPU_TIMER) += time.o obj-$(CONFIG_OMAP_32K_TIMER) += timer32k.o +obj-$(CONFIG_OMAP_DM_TIMER) += dmtimers.o # Power Management obj-$(CONFIG_PM) += pm.o sleep.o diff --git a/arch/arm/mach-omap1/dmtimers.c b/arch/arm/mach-omap1/dmtimers.c new file mode 100644 index 0000000..4034fb7 --- /dev/null +++ b/arch/arm/mach-omap1/dmtimers.c @@ -0,0 +1,148 @@ +/** + * OMAP1 Dual-Mode Timers + * + * Copyright (C) 2010 Texas Instruments, Inc. + * Thara Gopinath <[email protected]> + * + * 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 <linux/clk.h> +#include <linux/io.h> +#include <linux/err.h> +#include <linux/slab.h> + +#include <mach/irqs.h> +#include <plat/dmtimer.h> + +#define OMAP1610_GPTIMER1_BASE 0xfffb1400 +#define OMAP1610_GPTIMER2_BASE 0xfffb1c00 +#define OMAP1610_GPTIMER3_BASE 0xfffb2400 +#define OMAP1610_GPTIMER4_BASE 0xfffb2c00 +#define OMAP1610_GPTIMER5_BASE 0xfffb3400 +#define OMAP1610_GPTIMER6_BASE 0xfffb3c00 +#define OMAP1610_GPTIMER7_BASE 0xfffb7400 +#define OMAP1610_GPTIMER8_BASE 0xfffbd400 + +#define OMAP1_DM_TIMER_COUNT 8 + +static int omap1_dm_timer_set_clk(struct platform_device *pdev, int source) +{ + int n = (pdev->id) << 1; + u32 l; + + l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n); + l |= source << n; + omap_writel(l, MOD_CONF_CTRL_1); + + return 0; +} + +int __init omap1_dm_timer_init(void) +{ + int i = 0; + + if (!cpu_is_omap16xx()) + return 0; + + omap_dm_timer_count = OMAP1_DM_TIMER_COUNT; + + for (i = 0; i < omap_dm_timer_count; i++) { + struct platform_device *pdev; + struct omap_dm_timer_plat_info *pdata; + struct resource res[2]; + u32 base, irq; + int ret; + + switch (i) { + case 0: + base = OMAP1610_GPTIMER1_BASE; + irq = INT_1610_GPTIMER1; + break; + case 1: + base = OMAP1610_GPTIMER2_BASE; + irq = INT_1610_GPTIMER2; + break; + case 2: + base = OMAP1610_GPTIMER3_BASE; + irq = INT_1610_GPTIMER3; + break; + case 3: + base = OMAP1610_GPTIMER4_BASE; + irq = INT_1610_GPTIMER4; + break; + case 4: + base = OMAP1610_GPTIMER5_BASE; + irq = INT_1610_GPTIMER5; + break; + case 5: + base = OMAP1610_GPTIMER6_BASE; + irq = INT_1610_GPTIMER6; + break; + case 6: + base = OMAP1610_GPTIMER7_BASE; + irq = INT_1610_GPTIMER7; + break; + case 7: + base = OMAP1610_GPTIMER8_BASE; + irq = INT_1610_GPTIMER8; + break; + default: + /* Should never reach here */ + return -EINVAL; + } + + pdev = platform_device_alloc("dmtimer", i); + if (!pdev) { + pr_err("%s: Unable to device alloc for dmtimer%d\n", + __func__, i); + return -ENOMEM; + } + + memset(res, 0, 2 * sizeof(struct resource)); + res[0].start = base; + res[0].end = base + 0xff; + res[0].flags = IORESOURCE_MEM; + res[1].start = res[1].end = irq; + res[1].flags = IORESOURCE_IRQ; + ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); + if (ret) { + pr_err("%s: Unable to add resources for %s%d\n", + __func__, pdev->name, pdev->id); + goto exit_device_put; + } + + pdata = kzalloc(sizeof(struct omap_dm_timer_plat_info), + GFP_KERNEL); + if (!pdata) { + pr_err("%s: Unable to allocate pdata for %s%d\n", + __func__, pdev->name, pdev->id); + ret = -ENOMEM; + goto exit_device_put; + } + + pdata->omap_dm_set_source_clk = omap1_dm_timer_set_clk; + ret = platform_device_add_data(pdev, pdata, sizeof(*pdata)); + if (ret) { + pr_err("%s: Unable to add platform data for %s%d\n", + __func__, pdev->name, pdev->id); + goto exit_release_pdata; + } + ret = platform_device_add(pdev); + if (ret) { + pr_err("%s: Unable to add platform device for %s%d\n", + __func__, pdev->name, pdev->id); + goto exit_release_pdata; + } + continue; +exit_release_pdata: + kfree(pdata); +exit_device_put: + platform_device_put(pdev); + return ret; + } + return 0; +} +arch_initcall(omap1_dm_timer_init); diff --git a/arch/arm/mach-omap1/timer32k.c b/arch/arm/mach-omap1/timer32k.c index 20cfbcc..6b8ab9b 100644 --- a/arch/arm/mach-omap1/timer32k.c +++ b/arch/arm/mach-omap1/timer32k.c @@ -183,9 +183,6 @@ static __init void omap_init_32k_timer(void) */ static void __init omap_timer_init(void) { -#ifdef CONFIG_OMAP_DM_TIMER - omap_dm_timer_init(); -#endif omap_init_32k_timer(); } -- 1.7.0.rc1.33.g07cf0f -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
