| Message ID | 1391710616-14226-3-git-send-email-t.figa@samsung.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
Am Donnerstag, 6. Februar 2014, 19:16:49 schrieb Tomasz Figa: > As suspend/resume handlers are being moved to SoC specific code, due to > differencies in suspend/resume handling of particular SoCs, to minimize > code duplication this patch provides common register save/restore > helpers that save/restore given list of registers of clock controller. > > Signed-off-by: Tomasz Figa <t.figa@samsung.com> > Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Heiko Stuebner <heiko@sntech.de> > --- > drivers/clk/samsung/clk.c | 32 ++++++++++++++++++++++++++++++++ > drivers/clk/samsung/clk.h | 10 ++++++++++ > 2 files changed, 42 insertions(+) > > diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c > index f503f32..c0a716b 100644 > --- a/drivers/clk/samsung/clk.c > +++ b/drivers/clk/samsung/clk.c > @@ -22,6 +22,38 @@ static struct clk_onecell_data clk_data; > #endif > > #ifdef CONFIG_PM_SLEEP > +void samsung_clk_save(void __iomem *base, > + struct samsung_clk_reg_dump *rd, > + unsigned int num_regs) > +{ > + for (; num_regs > 0; --num_regs, ++rd) > + rd->value = readl(base + rd->offset); > +} > + > +void samsung_clk_restore(void __iomem *base, > + const struct samsung_clk_reg_dump *rd, > + unsigned int num_regs) > +{ > + for (; num_regs > 0; --num_regs, ++rd) > + writel(rd->value, base + rd->offset); > +} > + > +struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump(unsigned long > *rdump, + unsigned long nr_rdump) > +{ > + struct samsung_clk_reg_dump *rd; > + unsigned int i; > + > + rd = kcalloc(nr_rdump, sizeof(*rd), GFP_KERNEL); > + if (!rd) > + return NULL; > + > + for (i = 0; i < nr_rdump; ++i) > + rd[i].offset = rdump[i]; > + > + return rd; > +} > + > static struct samsung_clk_reg_dump *reg_dump; > static unsigned long nr_reg_dump; > > diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h > index 31b4174..ec8d46b 100644 > --- a/drivers/clk/samsung/clk.h > +++ b/drivers/clk/samsung/clk.h > @@ -340,4 +340,14 @@ extern void __init samsung_clk_register_pll(struct > samsung_pll_clock *pll_list, > > extern unsigned long _get_rate(const char *clk_name); > > +extern void samsung_clk_save(void __iomem *base, > + struct samsung_clk_reg_dump *rd, > + unsigned int num_regs); > +extern void samsung_clk_restore(void __iomem *base, > + const struct samsung_clk_reg_dump *rd, > + unsigned int num_regs); > +extern struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump( > + unsigned long *rdump, > + unsigned long nr_rdump); > + > #endif /* __SAMSUNG_CLK_H */ -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 06/02/14 19:16, Tomasz Figa wrote: > As suspend/resume handlers are being moved to SoC specific code, due to > differencies in suspend/resume handling of particular SoCs, to minimize > code duplication this patch provides common register save/restore > helpers that save/restore given list of registers of clock controller. > > Signed-off-by: Tomasz Figa <t.figa@samsung.com> > Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c index f503f32..c0a716b 100644 --- a/drivers/clk/samsung/clk.c +++ b/drivers/clk/samsung/clk.c @@ -22,6 +22,38 @@ static struct clk_onecell_data clk_data; #endif #ifdef CONFIG_PM_SLEEP +void samsung_clk_save(void __iomem *base, + struct samsung_clk_reg_dump *rd, + unsigned int num_regs) +{ + for (; num_regs > 0; --num_regs, ++rd) + rd->value = readl(base + rd->offset); +} + +void samsung_clk_restore(void __iomem *base, + const struct samsung_clk_reg_dump *rd, + unsigned int num_regs) +{ + for (; num_regs > 0; --num_regs, ++rd) + writel(rd->value, base + rd->offset); +} + +struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump(unsigned long *rdump, + unsigned long nr_rdump) +{ + struct samsung_clk_reg_dump *rd; + unsigned int i; + + rd = kcalloc(nr_rdump, sizeof(*rd), GFP_KERNEL); + if (!rd) + return NULL; + + for (i = 0; i < nr_rdump; ++i) + rd[i].offset = rdump[i]; + + return rd; +} + static struct samsung_clk_reg_dump *reg_dump; static unsigned long nr_reg_dump; diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h index 31b4174..ec8d46b 100644 --- a/drivers/clk/samsung/clk.h +++ b/drivers/clk/samsung/clk.h @@ -340,4 +340,14 @@ extern void __init samsung_clk_register_pll(struct samsung_pll_clock *pll_list, extern unsigned long _get_rate(const char *clk_name); +extern void samsung_clk_save(void __iomem *base, + struct samsung_clk_reg_dump *rd, + unsigned int num_regs); +extern void samsung_clk_restore(void __iomem *base, + const struct samsung_clk_reg_dump *rd, + unsigned int num_regs); +extern struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump( + unsigned long *rdump, + unsigned long nr_rdump); + #endif /* __SAMSUNG_CLK_H */