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C2X0v2: use GPIO to check button state in dualboot

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C240v2 freeze on booting OF if SD card inserted. Use GPIO instead DBOP should
help.

Change-Id: Idec0028040f91c6d2c7c04327ca0e1af204f58eb
This commit is contained in:
Mihail Zenkov 2016-04-17 16:31:33 +00:00 • committed by Gerrit Rockbox
parent 18fecd9461
commit 4327cbc9b8
1 changed files with 9 additions and 54 deletions
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63
rbutil/mkamsboot/dualboot/dualboot.S
View file

@ -28,9 +28,7 @@
.set GPIOD, 0xC80E0000 .set GPIOD, 0xC80E0000
.set CGU_PROC, 0xC80F0010 .set CGU_PROC, 0xC80F0010
.set CGU_PERI, 0xC80F0014 .set CGU_PERI, 0xC80F0014
.set CGU_DBOP, 0xC80F0038
.set CCU_IO, 0xC810000C .set CCU_IO, 0xC810000C
.set DBOP, 0xC8120000
.set I2C_BASE, 0xC8070000 .set I2C_BASE, 0xC8070000
.set I2C_DATA, 0x00 .set I2C_DATA, 0x00
.set I2C_SLAD0, 0x04 .set I2C_SLAD0, 0x04
@ -149,6 +147,15 @@ uclcopy:
cmp r1, #0 /* C3 = #0 means button pressed */ cmp r1, #0 /* C3 = #0 means button pressed */
beq boot_of beq boot_of
#elif defined(SANSA_C200V2)
ldr r0, =GPIOC
mov r1, #0
str r1, [r0, #0x400]
ldr r1, [r0, #0x10] /* read pin C2 */
cmp r1, #0 /* C2 = #0 means button pressed */
beq boot_of
#elif defined(SANSA_FUZEV2) #elif defined(SANSA_FUZEV2)
ldr r0, =GPIOC ldr r0, =GPIOC
mov r1, #0 mov r1, #0
@ -200,58 +207,6 @@ uclcopy:
cmp r1, #0 cmp r1, #0
bne boot_of bne boot_of
#elif defined(SANSA_C200V2)
.set BUTTON_LEFT, (1<< 2)
.set BUTTON_DOWN, (1<< 3)
.set BUTTON_SELECT, (1<< 4)
.set BUTTON_UP, (1<< 5)
.set BUTTON_RIGHT, (1<< 6)
.set BUTTON_HOLD, (1<<12)
ldr r0, =CGU_DBOP
mov r1, #(1<<3) @ DBOP freq = PCLK, clock enabled
str r1, [r0]
@ AFSEL needs to be set for this to work
ldr r2, =GPIOB
mov r1, #0xc
str r1, [r2, #0x420] @ GPIOB_AFSEL
ldr r2, =GPIOC
mov r1, #0xff
str r1, [r2, #0x420] @ GPIOC_AFSEL
ldr r0, =DBOP
@ TIMPOL doesn't matter here since we don't need
@ the control signals.
@ 16 bit data width
@ enable write
@ tri-state output
ldr r1, =0x00091000
str r1, [r0, #8] @ DBOP_CTRL
ldr r1, =0xf0ff @ precharge
str r1, [r0, #0x10] @ DBOP_DOUT
2: ldr r1, [r0, #0xc] @ DOBP_STAT
ands r1, r1, #(1<<10)
beq 2b @ make sure fifo is empty
@ 16 bit data width
@ start read
@ tri-state output
@ strobe time 31
ldr r1, =0x0008901f
str r1, [r0, #8] @ DBOP_CTRL
3: ldr r1, [r0, #0xc] @ DOBP_STAT
ands r1, r1, #(1<<16)
beq 3b @ wait for valid data
ldrh r1, [r0, #0x14] @ DBOP_DIN
tst r1, #BUTTON_LEFT @ boot of?
beq boot_of
#elif defined(SANSA_M200V4) #elif defined(SANSA_M200V4)
.set row, (1<<5) /* enable output on A5 */ .set row, (1<<5) /* enable output on A5 */
.set col, (1<<0) /* read keyscan column A0 */ .set col, (1<<0) /* read keyscan column A0 */