ARM: shmobile: Break out R-Car Gen2 setup code

Move arch timer workaround code and boot mode pin
handling from setup-r8a7790.c to setup-rcar-gen2.c.

With this in place the same code can be used on
other R-Car Generation 2 devices such as r8a7791.

Signed-off-by: Magnus Damm <damm@opensource.se>
[horms+renesas@verge.net.au trivial rebase of board-lager.c
 for introduction of lager_add_standard_devices()]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 1 insertions, 67 deletions

diff --git a/arch/arm/mach-shmobile/setup-r8a7790.c b/arch/arm/mach-shmobile/setup-r8a7790.c
index c7e24eff9ba2..c47bcebbcb00 100644
--- a/arch/arm/mach-shmobile/setup-r8a7790.c
+++ b/arch/arm/mach-shmobile/setup-r8a7790.c
@@ -18,7 +18,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#include <linux/clocksource.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/of_platform.h>
@@ -203,71 +202,6 @@ void __init r8a7790_add_standard_devices(void)
 	r8a7790_register_thermal();
 }
 
-#define MODEMR 0xe6160060
-
-u32 __init r8a7790_read_mode_pins(void)
-{
-	void __iomem *modemr = ioremap_nocache(MODEMR, 4);
-	u32 mode;
-
-	BUG_ON(!modemr);
-	mode = ioread32(modemr);
-	iounmap(modemr);
-
-	return mode;
-}
-
-#define CNTCR 0
-#define CNTFID0 0x20
-
-void __init r8a7790_timer_init(void)
-{
-#ifdef CONFIG_ARM_ARCH_TIMER
-	u32 mode = r8a7790_read_mode_pins();
-	void __iomem *base;
-	int extal_mhz = 0;
-	u32 freq;
-
-	/* At Linux boot time the r8a7790 arch timer comes up
-	 * with the counter disabled. Moreover, it may also report
-	 * a potentially incorrect fixed 13 MHz frequency. To be
-	 * correct these registers need to be updated to use the
-	 * frequency EXTAL / 2 which can be determined by the MD pins.
-	 */
-
-	switch (mode & (MD(14) | MD(13))) {
-	case 0:
-		extal_mhz = 15;
-		break;
-	case MD(13):
-		extal_mhz = 20;
-		break;
-	case MD(14):
-		extal_mhz = 26;
-		break;
-	case MD(13) | MD(14):
-		extal_mhz = 30;
-		break;
-	}
-
-	/* The arch timer frequency equals EXTAL / 2 */
-	freq = extal_mhz * (1000000 / 2);
-
-	/* Remap "armgcnt address map" space */
-	base = ioremap(0xe6080000, PAGE_SIZE);
-
-	/* Update registers with correct frequency */
-	iowrite32(freq, base + CNTFID0);
-	asm volatile("mcr p15, 0, %0, c14, c0, 0" : : "r" (freq));
-
-	/* make sure arch timer is started by setting bit 0 of CNTCR */
-	iowrite32(1, base + CNTCR);
-	iounmap(base);
-#endif /* CONFIG_ARM_ARCH_TIMER */
-
-	clocksource_of_init();
-}
-
 void __init r8a7790_init_early(void)
 {
 #ifndef CONFIG_ARM_ARCH_TIMER
@@ -285,7 +219,7 @@ static const char * const r8a7790_boards_compat_dt[] __initconst = {
 DT_MACHINE_START(R8A7790_DT, "Generic R8A7790 (Flattened Device Tree)")
 	.smp		= smp_ops(r8a7790_smp_ops),
 	.init_early	= r8a7790_init_early,
-	.init_time	= r8a7790_timer_init,
+	.init_time	= rcar_gen2_timer_init,
 	.dt_compat	= r8a7790_boards_compat_dt,
 MACHINE_END
 #endif /* CONFIG_USE_OF */