ARM: tegra: Remove flow controller programming

This particular code had no effect on WFI execution. It only
asserts/de-asserts signal to tegra "legacy" CPU idle stats
monitor, which we are no longer using (cpufreq is based on
kernel s/w idle stats instead).

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 0 insertions, 29 deletions

diff --git a/arch/arm/mach-tegra/sleep.S b/arch/arm/mach-tegra/sleep.S
index 5b20197bae7f..d29b156a8011 100644
--- a/arch/arm/mach-tegra/sleep.S
+++ b/arch/arm/mach-tegra/sleep.S
@@ -62,32 +62,3 @@
         movw    \reg, #:lower16:\val
         movt    \reg, #:upper16:\val
 .endm
-
-/*
- * tegra_cpu_wfi
- *
- * puts current CPU in clock-gated wfi using the flow controller
- *
- * corrupts r0-r3
- * must be called with MMU on
- */
-
-ENTRY(tegra_cpu_wfi)
-        cpu_id  r0
-        cpu_to_halt_reg r1, r0
-        cpu_to_csr_reg r2, r0
-        mov32   r0, TEGRA_FLOW_CTRL_VIRT
-        mov     r3, #FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG
-        str     r3, [r0, r2]    @ clear event & interrupt status
-        mov     r3, #FLOW_CTRL_WAIT_FOR_INTERRUPT | FLOW_CTRL_JTAG_RESUME
-        str     r3, [r0, r1]    @ put flow controller in wait irq mode
-        dsb
-        wfi
-        mov     r3, #0
-        str     r3, [r0, r1]    @ clear flow controller halt status
-        mov     r3, #FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG
-        str     r3, [r0, r2]    @ clear event & interrupt status
-        dsb
-        mov     pc, lr
-ENDPROC(tegra_cpu_wfi)
-