1 files changed, 7 insertions, 140 deletions

diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index b40035b011d0..b2806946a77a 100644
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c
@@ -3,6 +3,7 @@
  *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
  */
 
+#include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/clkdev.h>
 #include <linux/clk/at91_pmc.h>
@@ -14,8 +15,6 @@
 
 #include <asm/proc-fns.h>
 
-#include <dt-bindings/clock/at91.h>
-
 #include "pmc.h"
 
 #define PMC_MAX_IDS 128
@@ -111,147 +110,19 @@ struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem,
 }
 
 #ifdef CONFIG_PM
-static struct regmap *pmcreg;
-
-static u8 registered_ids[PMC_MAX_IDS];
-static u8 registered_pcks[PMC_MAX_PCKS];
-
-static struct
-{
-	u32 scsr;
-	u32 pcsr0;
-	u32 uckr;
-	u32 mor;
-	u32 mcfr;
-	u32 pllar;
-	u32 mckr;
-	u32 usb;
-	u32 imr;
-	u32 pcsr1;
-	u32 pcr[PMC_MAX_IDS];
-	u32 audio_pll0;
-	u32 audio_pll1;
-	u32 pckr[PMC_MAX_PCKS];
-} pmc_cache;
-
-/*
- * As Peripheral ID 0 is invalid on AT91 chips, the identifier is stored
- * without alteration in the table, and 0 is for unused clocks.
- */
-void pmc_register_id(u8 id)
-{
-	int i;
-
-	for (i = 0; i < PMC_MAX_IDS; i++) {
-		if (registered_ids[i] == 0) {
-			registered_ids[i] = id;
-			break;
-		}
-		if (registered_ids[i] == id)
-			break;
-	}
-}
-
-/*
- * As Programmable Clock 0 is valid on AT91 chips, there is an offset
- * of 1 between the stored value and the real clock ID.
- */
-void pmc_register_pck(u8 pck)
-{
-	int i;
-
-	for (i = 0; i < PMC_MAX_PCKS; i++) {
-		if (registered_pcks[i] == 0) {
-			registered_pcks[i] = pck + 1;
-			break;
-		}
-		if (registered_pcks[i] == (pck + 1))
-			break;
-	}
-}
-
-static int pmc_suspend(void)
+static int at91_pmc_suspend(void)
 {
-	int i;
-	u8 num;
-
-	regmap_read(pmcreg, AT91_PMC_SCSR, &pmc_cache.scsr);
-	regmap_read(pmcreg, AT91_PMC_PCSR, &pmc_cache.pcsr0);
-	regmap_read(pmcreg, AT91_CKGR_UCKR, &pmc_cache.uckr);
-	regmap_read(pmcreg, AT91_CKGR_MOR, &pmc_cache.mor);
-	regmap_read(pmcreg, AT91_CKGR_MCFR, &pmc_cache.mcfr);
-	regmap_read(pmcreg, AT91_CKGR_PLLAR, &pmc_cache.pllar);
-	regmap_read(pmcreg, AT91_PMC_MCKR, &pmc_cache.mckr);
-	regmap_read(pmcreg, AT91_PMC_USB, &pmc_cache.usb);
-	regmap_read(pmcreg, AT91_PMC_IMR, &pmc_cache.imr);
-	regmap_read(pmcreg, AT91_PMC_PCSR1, &pmc_cache.pcsr1);
-
-	for (i = 0; registered_ids[i]; i++) {
-		regmap_write(pmcreg, AT91_PMC_PCR,
-			     (registered_ids[i] & AT91_PMC_PCR_PID_MASK));
-		regmap_read(pmcreg, AT91_PMC_PCR,
-			    &pmc_cache.pcr[registered_ids[i]]);
-	}
-	for (i = 0; registered_pcks[i]; i++) {
-		num = registered_pcks[i] - 1;
-		regmap_read(pmcreg, AT91_PMC_PCKR(num), &pmc_cache.pckr[num]);
-	}
-
-	return 0;
+	return clk_save_context();
 }
 
-static bool pmc_ready(unsigned int mask)
+static void at91_pmc_resume(void)
 {
-	unsigned int status;
-
-	regmap_read(pmcreg, AT91_PMC_SR, &status);
-
-	return ((status & mask) == mask) ? 1 : 0;
-}
-
-static void pmc_resume(void)
-{
-	int i;
-	u8 num;
-	u32 tmp;
-	u32 mask = AT91_PMC_MCKRDY | AT91_PMC_LOCKA;
-
-	regmap_read(pmcreg, AT91_PMC_MCKR, &tmp);
-	if (pmc_cache.mckr != tmp)
-		pr_warn("MCKR was not configured properly by the firmware\n");
-	regmap_read(pmcreg, AT91_CKGR_PLLAR, &tmp);
-	if (pmc_cache.pllar != tmp)
-		pr_warn("PLLAR was not configured properly by the firmware\n");
-
-	regmap_write(pmcreg, AT91_PMC_SCER, pmc_cache.scsr);
-	regmap_write(pmcreg, AT91_PMC_PCER, pmc_cache.pcsr0);
-	regmap_write(pmcreg, AT91_CKGR_UCKR, pmc_cache.uckr);
-	regmap_write(pmcreg, AT91_CKGR_MOR, pmc_cache.mor);
-	regmap_write(pmcreg, AT91_CKGR_MCFR, pmc_cache.mcfr);
-	regmap_write(pmcreg, AT91_PMC_USB, pmc_cache.usb);
-	regmap_write(pmcreg, AT91_PMC_IMR, pmc_cache.imr);
-	regmap_write(pmcreg, AT91_PMC_PCER1, pmc_cache.pcsr1);
-
-	for (i = 0; registered_ids[i]; i++) {
-		regmap_write(pmcreg, AT91_PMC_PCR,
-			     pmc_cache.pcr[registered_ids[i]] |
-			     AT91_PMC_PCR_CMD);
-	}
-	for (i = 0; registered_pcks[i]; i++) {
-		num = registered_pcks[i] - 1;
-		regmap_write(pmcreg, AT91_PMC_PCKR(num), pmc_cache.pckr[num]);
-	}
-
-	if (pmc_cache.uckr & AT91_PMC_UPLLEN)
-		mask |= AT91_PMC_LOCKU;
-
-	while (!pmc_ready(mask))
-		cpu_relax();
+	clk_restore_context();
 }
 
 static struct syscore_ops pmc_syscore_ops = {
-	.suspend = pmc_suspend,
-	.resume = pmc_resume,
+	.suspend = at91_pmc_suspend,
+	.resume = at91_pmc_resume,
 };
 
 static const struct of_device_id sama5d2_pmc_dt_ids[] = {
@@ -271,11 +142,7 @@ static int __init pmc_register_ops(void)
 		of_node_put(np);
 		return -ENODEV;
 	}
-
-	pmcreg = device_node_to_regmap(np);
 	of_node_put(np);
-	if (IS_ERR(pmcreg))
-		return PTR_ERR(pmcreg);
 
 	register_syscore_ops(&pmc_syscore_ops);