From: Thara Gopinath <[email protected]> This patch coverts OMAP1 dmtimers into a platform devices and then registers with device model framework so that it can be bound to corresponding driver.
Signed-off-by: Partha Basak <[email protected]> Signed-off-by: Thara Gopinath <[email protected]> Signed-off-by: Tarun Kanti DebBarma <[email protected]> Cc: Cousson, Benoit <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Kevin Hilman <[email protected]> Cc: Tony Lindgren <[email protected]> --- arch/arm/mach-omap1/Makefile | 2 +- arch/arm/mach-omap1/dmtimer.c | 174 +++++++++++++++++++++++++++++++++++++++++ arch/arm/plat-omap/dmtimer.c | 46 ++--------- 3 files changed, 182 insertions(+), 40 deletions(-) create mode 100644 arch/arm/mach-omap1/dmtimer.c diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile index 9a304d8..0001659 100644 --- a/arch/arm/mach-omap1/Makefile +++ b/arch/arm/mach-omap1/Makefile @@ -4,7 +4,7 @@ # Common support obj-y := io.o id.o sram.o irq.o mux.o flash.o serial.o devices.o -obj-y += clock.o clock_data.o opp_data.o +obj-y += clock.o clock_data.o opp_data.o dmtimer.o obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o diff --git a/arch/arm/mach-omap1/dmtimer.c b/arch/arm/mach-omap1/dmtimer.c new file mode 100644 index 0000000..75ce978 --- /dev/null +++ b/arch/arm/mach-omap1/dmtimer.c @@ -0,0 +1,174 @@ +/** + * OMAP1 Dual-Mode Timers + * + * Copyright (C) 2010 Texas Instruments, Inc. + * Thara Gopinath <[email protected]> + * Tarun Kanti DebBarma <[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> +#include <plat/omap_device.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 +/* omap 1 timers register map */ +static u32 omap_timer_reg_map_v1[] = { + [OMAP_TIMER_ID_REG] = (0x00 | (WP_NONE << WPSHIFT)), + [OMAP_TIMER_OCP_CFG_REG] = (0x10 | (WP_NONE << WPSHIFT)), + [OMAP_TIMER_SYS_STAT_REG] = (0x14 | (WP_NONE << WPSHIFT)), + [OMAP_TIMER_STAT_REG] = (0x18 | (WP_NONE << WPSHIFT)), + [OMAP_TIMER_INT_EN_REG] = (0x1c | (WP_NONE << WPSHIFT)), + [OMAP_TIMER_WAKEUP_EN_REG] = (0x20 | (WP_NONE << WPSHIFT)), + [OMAP_TIMER_CTRL_REG] = (0x24 | (WP_TCLR << WPSHIFT)), + [OMAP_TIMER_COUNTER_REG] = (0x28 | (WP_TCRR << WPSHIFT)), + [OMAP_TIMER_LOAD_REG] = (0x2c | (WP_TLDR << WPSHIFT)), + [OMAP_TIMER_TRIGGER_REG] = (0x30 | (WP_TTGR << WPSHIFT)), + [OMAP_TIMER_WRITE_PEND_REG] = (0x34 | (WP_NONE << WPSHIFT)), + [OMAP_TIMER_MATCH_REG] = (0x38 | (WP_TMAR << WPSHIFT)), + [OMAP_TIMER_CAPTURE_REG] = (0x3c | (WP_NONE << WPSHIFT)), + [OMAP_TIMER_IF_CTRL_REG] = (0x40 | (WP_NONE << WPSHIFT)), +}; + +static int omap1_dm_timer_set_src(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_dmtimer_device_init(void) +{ + int i; + int ret; + struct dmtimer_platform_data *pdata; + struct platform_device *pdev; + + pr_debug("%s:+\n", __func__); + + if (!cpu_is_omap16xx()) + return 0; + + for (i = 0; i < OMAP1_DM_TIMER_COUNT; i++) { + struct resource res[2]; + u32 base, irq; + + 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 err_free_pdev; + } + + pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); + if (!pdata) { + pr_err("%s: Unable to allocate pdata for %s.%d\n", + __func__, pdev->name, pdev->id); + ret = -ENOMEM; + goto err_free_pdev; + } + + pdata->set_timer_src = omap1_dm_timer_set_src; + pdata->reg_map = omap_timer_reg_map_v1; + pdata->is_early_init = 0; + 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 err_free_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 err_free_pdata; + } + + pr_info("%s.%d: registered\n", pdev->name, pdev->id); + } + + return 0; + +err_free_pdata: + kfree(pdata); + +err_free_pdev: + platform_device_del(pdev); + + return ret; +} +arch_initcall(omap1_dmtimer_device_init); diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c index fc3513e..2017b1d 100644 --- a/arch/arm/plat-omap/dmtimer.c +++ b/arch/arm/plat-omap/dmtimer.c @@ -163,25 +163,6 @@ struct omap_dm_timer { static int dm_timer_count; -#ifdef CONFIG_ARCH_OMAP1 -static struct omap_dm_timer omap1_dm_timers[] = { - { .phys_base = 0xfffb1400, .irq = INT_1610_GPTIMER1 }, - { .phys_base = 0xfffb1c00, .irq = INT_1610_GPTIMER2 }, - { .phys_base = 0xfffb2400, .irq = INT_1610_GPTIMER3 }, - { .phys_base = 0xfffb2c00, .irq = INT_1610_GPTIMER4 }, - { .phys_base = 0xfffb3400, .irq = INT_1610_GPTIMER5 }, - { .phys_base = 0xfffb3c00, .irq = INT_1610_GPTIMER6 }, - { .phys_base = 0xfffb7400, .irq = INT_1610_GPTIMER7 }, - { .phys_base = 0xfffbd400, .irq = INT_1610_GPTIMER8 }, -}; - -static const int omap1_dm_timer_count = ARRAY_SIZE(omap1_dm_timers); - -#else -#define omap1_dm_timers NULL -#define omap1_dm_timer_count 0 -#endif /* CONFIG_ARCH_OMAP1 */ - #ifdef CONFIG_ARCH_OMAP2 static struct omap_dm_timer omap2_dm_timers[] = { { .phys_base = 0x48028000, .irq = INT_24XX_GPTIMER1 }, @@ -548,22 +529,9 @@ void omap_dm_timer_stop(struct omap_dm_timer *timer) } EXPORT_SYMBOL_GPL(omap_dm_timer_stop); -#ifdef CONFIG_ARCH_OMAP1 -int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source) -{ - int n = (timer - dm_timers) << 1; - u32 l; - l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n); - l |= source << n; - omap_writel(l, MOD_CONF_CTRL_1); - return 0; -} -EXPORT_SYMBOL_GPL(omap_dm_timer_set_source); - -#else int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source) { @@ -572,9 +540,14 @@ int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source) if (source < 0 || source >= 3) return -EINVAL; +#ifdef CONFIG_ARCH_OMAP1 + if (pdata->set_timer_src) + ret = pdata->set_timer_src(timer->pdev, source); +#else clk_disable(timer->fclk); ret = clk_set_parent(timer->fclk, dm_source_clocks[source]); clk_enable(timer->fclk); +#endif /* * When the functional clock disappears, too quick writes seem @@ -586,7 +559,6 @@ int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source) } EXPORT_SYMBOL_GPL(omap_dm_timer_set_source); -#endif void omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload, unsigned int load) @@ -734,15 +706,11 @@ int __init omap_dm_timer_init(void) struct omap_dm_timer *timer; int i, map_size = SZ_8K; /* Module 4KB + L4 4KB except on omap1 */ - if (!(cpu_is_omap16xx() || cpu_class_is_omap2())) + if (!cpu_class_is_omap2()) return -ENODEV; - if (cpu_class_is_omap1()) { - dm_timers = omap1_dm_timers; - dm_timer_count = omap1_dm_timer_count; - map_size = SZ_2K; - } else if (cpu_is_omap24xx()) { + if (cpu_is_omap24xx()) { dm_timers = omap2_dm_timers; dm_timer_count = omap2_dm_timer_count; dm_source_names = omap2_dm_source_names; -- 1.6.0.4 -- 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
