diff options
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod.c | 39 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/pdata-quirks.c | 60 |
2 files changed, 65 insertions, 34 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index e0350476feaa..203664c40d3d 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -3442,6 +3442,7 @@ static int omap_hwmod_check_module(struct device *dev, * @dev: struct device * @oh: module * @sysc_fields: sysc register bits + * @clockdomain: clockdomain * @rev_offs: revision register offset * @sysc_offs: sysconfig register offset * @syss_offs: sysstatus register offset @@ -3453,6 +3454,7 @@ static int omap_hwmod_check_module(struct device *dev, static int omap_hwmod_allocate_module(struct device *dev, struct omap_hwmod *oh, const struct ti_sysc_module_data *data, struct sysc_regbits *sysc_fields, + struct clockdomain *clkdm, s32 rev_offs, s32 sysc_offs, s32 syss_offs, u32 sysc_flags, u32 idlemodes) @@ -3460,8 +3462,6 @@ static int omap_hwmod_allocate_module(struct device *dev, struct omap_hwmod *oh, struct omap_hwmod_class_sysconfig *sysc; struct omap_hwmod_class *class = NULL; struct omap_hwmod_ocp_if *oi = NULL; - struct clockdomain *clkdm = NULL; - struct clk *clk = NULL; void __iomem *regs = NULL; unsigned long flags; @@ -3508,36 +3508,6 @@ static int omap_hwmod_allocate_module(struct device *dev, struct omap_hwmod *oh, oi->user = OCP_USER_MPU | OCP_USER_SDMA; } - if (!oh->_clk) { - struct clk_hw_omap *hwclk; - - clk = of_clk_get_by_name(dev->of_node, "fck"); - if (!IS_ERR(clk)) - clk_prepare(clk); - else - clk = NULL; - - /* - * Populate clockdomain based on dts clock. It is needed for - * clkdm_deny_idle() and clkdm_allow_idle() until we have have - * interconnect driver and reset driver capable of blocking - * clockdomain idle during reset, enable and idle. - */ - if (clk) { - hwclk = to_clk_hw_omap(__clk_get_hw(clk)); - if (hwclk && hwclk->clkdm_name) - clkdm = clkdm_lookup(hwclk->clkdm_name); - } - - /* - * Note that we assume interconnect driver manages the clocks - * and do not need to populate oh->_clk for dynamically - * allocated modules. - */ - clk_unprepare(clk); - clk_put(clk); - } - spin_lock_irqsave(&oh->_lock, flags); if (regs) oh->_mpu_rt_va = regs; @@ -3623,7 +3593,7 @@ int omap_hwmod_init_module(struct device *dev, u32 sysc_flags, idlemodes; int error; - if (!dev || !data) + if (!dev || !data || !data->name || !cookie) return -EINVAL; oh = _lookup(data->name); @@ -3694,7 +3664,8 @@ int omap_hwmod_init_module(struct device *dev, return error; return omap_hwmod_allocate_module(dev, oh, data, sysc_fields, - rev_offs, sysc_offs, syss_offs, + cookie->clkdm, rev_offs, + sysc_offs, syss_offs, sysc_flags, idlemodes); } diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index b0f8c9a70c68..6c6f8fce854e 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -26,6 +26,7 @@ #include <linux/platform_data/wkup_m3.h> #include <linux/platform_data/asoc-ti-mcbsp.h> +#include "clockdomain.h" #include "common.h" #include "common-board-devices.h" #include "control.h" @@ -460,6 +461,62 @@ static void __init dra7x_evm_mmc_quirk(void) } #endif +static struct clockdomain *ti_sysc_find_one_clockdomain(struct clk *clk) +{ + struct clockdomain *clkdm = NULL; + struct clk_hw_omap *hwclk; + + hwclk = to_clk_hw_omap(__clk_get_hw(clk)); + if (hwclk && hwclk->clkdm_name) + clkdm = clkdm_lookup(hwclk->clkdm_name); + + return clkdm; +} + +/** + * ti_sysc_clkdm_init - find clockdomain based on clock + * @fck: device functional clock + * @ick: device interface clock + * @dev: struct device + * + * Populate clockdomain based on clock. It is needed for + * clkdm_deny_idle() and clkdm_allow_idle() for blocking clockdomain + * clockdomain idle during reset, enable and idle. + * + * Note that we assume interconnect driver manages the clocks + * and do not need to populate oh->_clk for dynamically + * allocated modules. + */ +static int ti_sysc_clkdm_init(struct device *dev, + struct clk *fck, struct clk *ick, + struct ti_sysc_cookie *cookie) +{ + if (fck) + cookie->clkdm = ti_sysc_find_one_clockdomain(fck); + if (cookie->clkdm) + return 0; + if (ick) + cookie->clkdm = ti_sysc_find_one_clockdomain(ick); + if (cookie->clkdm) + return 0; + + return -ENODEV; +} + +static void ti_sysc_clkdm_deny_idle(struct device *dev, + const struct ti_sysc_cookie *cookie) +{ + if (cookie->clkdm) + clkdm_deny_idle(cookie->clkdm); +} + +static void ti_sysc_clkdm_allow_idle(struct device *dev, + const struct ti_sysc_cookie *cookie) +{ + if (cookie->clkdm) + clkdm_allow_idle(cookie->clkdm); +} + static int ti_sysc_enable_module(struct device *dev, const struct ti_sysc_cookie *cookie) { @@ -491,6 +548,9 @@ static struct of_dev_auxdata omap_auxdata_lookup[]; static struct ti_sysc_platform_data ti_sysc_pdata = { .auxdata = omap_auxdata_lookup, + .init_clockdomain = ti_sysc_clkdm_init, + .clkdm_deny_idle = ti_sysc_clkdm_deny_idle, + .clkdm_allow_idle = ti_sysc_clkdm_allow_idle, .init_module = omap_hwmod_init_module, .enable_module = ti_sysc_enable_module, .idle_module = ti_sysc_idle_module, |