sh: Add CPG save/restore code for sh7724 R-standby
Add sh7724 code to save and restore CPG state during R-standby. Only CPG registers IRDACLKCR and SPUCLKCR require software save and restore. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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@ -941,6 +941,9 @@ static struct {
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/* RWDT */
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unsigned short rwtcnt;
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unsigned short rwtcsr;
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/* CPG */
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unsigned long irdaclk;
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unsigned long spuclk;
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} sh7724_rstandby_state;
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static int sh7724_pre_sleep_notifier_call(struct notifier_block *nb,
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@ -998,6 +1001,10 @@ static int sh7724_pre_sleep_notifier_call(struct notifier_block *nb,
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sh7724_rstandby_state.rwtcsr |= 0xa500;
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__raw_writew(sh7724_rstandby_state.rwtcsr & 0x07, 0xa4520004);
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/* CPG */
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sh7724_rstandby_state.irdaclk = __raw_readl(0xa4150018); /* IRDACLKCR */
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sh7724_rstandby_state.spuclk = __raw_readl(0xa415003c); /* SPUCLKCR */
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return NOTIFY_DONE;
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}
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@ -1052,6 +1059,10 @@ static int sh7724_post_sleep_notifier_call(struct notifier_block *nb,
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__raw_writew(sh7724_rstandby_state.rwtcnt, 0xa4520000); /* RWTCNT */
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__raw_writew(sh7724_rstandby_state.rwtcsr, 0xa4520004); /* RWTCSR */
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/* CPG */
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__raw_writel(sh7724_rstandby_state.irdaclk, 0xa4150018); /* IRDACLKCR */
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__raw_writel(sh7724_rstandby_state.spuclk, 0xa415003c); /* SPUCLKCR */
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return NOTIFY_DONE;
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}
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