[PATCH v8 09/16] MIPS: lantiq: remove ltq_reset_cause() and ltq_boot_select()

Hauke Mehrtens
2017-08-02T22:59:33Z

Do not export the ltq_reset_cause() and ltq_boot_select() function any
more. ltq_reset_cause() was accessed by the watchdog driver before to
see why the last reset happened, this is now done through direct access
of the register over regmap. The bits in this register are anyway
different between the xrx200 and the falcon SoC.
ltq_boot_select() is not used any more and was used by the flash
drivers to check if the system was booted from this flash type, now the
drivers should depend on the device tree only.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
arch/mips/include/asm/mach-lantiq/lantiq.h | 4 ----
arch/mips/lantiq/falcon/reset.c | 22 ----------------------
arch/mips/lantiq/xway/reset.c | 19 -------------------
3 files changed, 45 deletions(-)

diff --git a/arch/mips/include/asm/mach-lantiq/lantiq.h b/arch/mips/include/asm/mach-lantiq/lantiq.h
index 8064d7a4b33d..fa045b4c0cdd 100644
--- a/arch/mips/include/asm/mach-lantiq/lantiq.h
+++ b/arch/mips/include/asm/mach-lantiq/lantiq.h
@@ -44,10 +44,6 @@ extern struct clk *clk_get_fpi(void);
extern struct clk *clk_get_io(void);
extern struct clk *clk_get_ppe(void);

-/* find out what bootsource we have */
-extern unsigned char ltq_boot_select(void);
-/* find out what caused the last cpu reset */
-extern int ltq_reset_cause(void);
/* find out the soc type */
extern int ltq_soc_type(void);

diff --git a/arch/mips/lantiq/falcon/reset.c b/arch/mips/lantiq/falcon/reset.c
index 7a535d72f541..722114d7409d 100644
--- a/arch/mips/lantiq/falcon/reset.c
+++ b/arch/mips/lantiq/falcon/reset.c
@@ -15,28 +15,6 @@

#include <lantiq_soc.h>

-/* CPU0 Reset Source Register */
-#define SYS1_CPU0RS 0x0040
-/* reset cause mask */
-#define CPU0RS_MASK 0x0003
-/* CPU0 Boot Mode Register */
-#define SYS1_BM 0x00a0
-/* boot mode mask */
-#define BM_MASK 0x0005
-
-/* allow platform code to find out what surce we booted from */
-unsigned char ltq_boot_select(void)
-{
- return ltq_sys1_r32(SYS1_BM) & BM_MASK;
-}
-
-/* allow the watchdog driver to find out what the boot reason was */
-int ltq_reset_cause(void)
-{
- return ltq_sys1_r32(SYS1_CPU0RS) & CPU0RS_MASK;
-}
-EXPORT_SYMBOL_GPL(ltq_reset_cause);
-
#define BOOT_REG_BASE (KSEG1 | 0x1F200000)
#define BOOT_PW1_REG (BOOT_REG_BASE | 0x20)
#define BOOT_PW2_REG (BOOT_REG_BASE | 0x24)
diff --git a/arch/mips/lantiq/xway/reset.c b/arch/mips/lantiq/xway/reset.c
index b6752c95a600..2dedcf939901 100644
--- a/arch/mips/lantiq/xway/reset.c
+++ b/arch/mips/lantiq/xway/reset.c
@@ -119,25 +119,6 @@ static void ltq_rcu_w32_mask(uint32_t clr, uint32_t set, uint32_t reg_off)
spin_unlock_irqrestore(&ltq_rcu_lock, flags);
}

-/* This function is used by the watchdog driver */
-int ltq_reset_cause(void)
-{
- u32 val = ltq_rcu_r32(RCU_RST_STAT);
- return val >> RCU_STAT_SHIFT;
-}
-EXPORT_SYMBOL_GPL(ltq_reset_cause);
-
-/* allow platform code to find out what source we booted from */
-unsigned char ltq_boot_select(void)
-{
- u32 val = ltq_rcu_r32(RCU_RST_STAT);
-
- if (of_device_is_compatible(ltq_rcu_np, "lantiq,rcu-xrx200"))
- return RCU_BOOT_SEL_XRX200(val);
-
- return RCU_BOOT_SEL(val);
-}
-
struct ltq_gphy_reset {
u32 rd;
u32 addr;
--
2.11.0