Blackfin: BF51x/BF52x: support GPIO Hysteresis/Schmitt Trigger options
Newer parts have optional Hysteresis/Schmitt Trigger options to help with
dirty signals. So add some kconfig options for tuning this and enable it
by default for people.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index d37a397..ac71dc1 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -864,6 +864,13 @@
bfin_write_EBIU_MODE(CONFIG_EBIU_MODEVAL);
bfin_write_EBIU_FCTL(CONFIG_EBIU_FCTLVAL);
#endif
+#ifdef CONFIG_BFIN_HYSTERESIS_CONTROL
+ bfin_write_PORTF_HYSTERISIS(HYST_PORTF_0_15);
+ bfin_write_PORTG_HYSTERISIS(HYST_PORTG_0_15);
+ bfin_write_PORTH_HYSTERISIS(HYST_PORTH_0_15);
+ bfin_write_MISCPORT_HYSTERISIS((bfin_read_MISCPORT_HYSTERISIS() &
+ ~HYST_NONEGPIO_MASK) | HYST_NONEGPIO);
+#endif
cclk = get_cclk();
sclk = get_sclk();
diff --git a/arch/blackfin/mach-bf518/Kconfig b/arch/blackfin/mach-bf518/Kconfig
index 4ab2d16..1d9f631 100644
--- a/arch/blackfin/mach-bf518/Kconfig
+++ b/arch/blackfin/mach-bf518/Kconfig
@@ -62,6 +62,67 @@
PORT G
endchoice
+comment "Hysteresis/Schmitt Trigger Control"
+config BFIN_HYSTERESIS_CONTROL
+ bool "Enable Hysteresis Control"
+ help
+ The ADSP-BF51x allows to control input hysteresis for Port F,
+ Port G and Port H and other processor signal inputs.
+ The Schmitt trigger enables can be set only for pin groups.
+ Saying Y will overwrite the default reset or boot loader
+ initialization.
+
+menu "PORT F"
+ depends on BFIN_HYSTERESIS_CONTROL
+config GPIO_HYST_PORTF_0_7
+ bool "Enable Hysteresis on PORTF {0...7}"
+config GPIO_HYST_PORTF_8_9
+ bool "Enable Hysteresis on PORTF {8, 9}"
+config GPIO_HYST_PORTF_10
+ bool "Enable Hysteresis on PORTF 10"
+config GPIO_HYST_PORTF_11
+ bool "Enable Hysteresis on PORTF 11"
+config GPIO_HYST_PORTF_12_13
+ bool "Enable Hysteresis on PORTF {12, 13}"
+config GPIO_HYST_PORTF_14_15
+ bool "Enable Hysteresis on PORTF {14, 15}"
+endmenu
+
+menu "PORT G"
+ depends on BFIN_HYSTERESIS_CONTROL
+config GPIO_HYST_PORTG_0
+ bool "Enable Hysteresis on PORTG 0"
+config GPIO_HYST_PORTG_1_4
+ bool "Enable Hysteresis on PORTG {1...4}"
+config GPIO_HYST_PORTG_5_6
+ bool "Enable Hysteresis on PORTG {5, 6}"
+config GPIO_HYST_PORTG_7_8
+ bool "Enable Hysteresis on PORTG {7, 8}"
+config GPIO_HYST_PORTG_9
+ bool "Enable Hysteresis on PORTG 9"
+config GPIO_HYST_PORTG_10
+ bool "Enable Hysteresis on PORTG 10"
+config GPIO_HYST_PORTG_11_13
+ bool "Enable Hysteresis on PORTG {11...13}"
+config GPIO_HYST_PORTG_14_15
+ bool "Enable Hysteresis on PORTG {14, 15}"
+endmenu
+
+menu "PORT H"
+ depends on BFIN_HYSTERESIS_CONTROL
+config GPIO_HYST_PORTH_0_7
+ bool "Enable Hysteresis on PORTH {0...7}"
+
+endmenu
+
+menu "None-GPIO"
+ depends on BFIN_HYSTERESIS_CONTROL
+config NONEGPIO_HYST_NMI_RST_BMODE
+ bool "Enable Hysteresis on {NMI, RESET, BMODE}"
+config NONEGPIO_HYST_JTAG
+ bool "Enable Hysteresis on JTAG"
+endmenu
+
comment "Interrupt Priority Assignment"
menu "Priority"
diff --git a/arch/blackfin/mach-bf518/include/mach/bf518.h b/arch/blackfin/mach-bf518/include/mach/bf518.h
index 856b330..6906dee 100644
--- a/arch/blackfin/mach-bf518/include/mach/bf518.h
+++ b/arch/blackfin/mach-bf518/include/mach/bf518.h
@@ -85,6 +85,111 @@
#define AMGCTLVAL (V_AMBEN | V_AMCKEN | V_CDPRIO)
+/**************************** Hysteresis Settings ****************************/
+
+#ifdef CONFIG_BFIN_HYSTERESIS_CONTROL
+#ifdef CONFIG_GPIO_HYST_PORTF_0_7
+#define HYST_PORTF_0_7 (1 << 0)
+#else
+#define HYST_PORTF_0_7 (0 << 0)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_8_9
+#define HYST_PORTF_8_9 (1 << 2)
+#else
+#define HYST_PORTF_8_9 (0 << 2)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_10
+#define HYST_PORTF_10 (1 << 4)
+#else
+#define HYST_PORTF_10 (0 << 4)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_11
+#define HYST_PORTF_11 (1 << 6)
+#else
+#define HYST_PORTF_11 (0 << 6)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_12_13
+#define HYST_PORTF_12_13 (1 << 8)
+#else
+#define HYST_PORTF_12_13 (0 << 8)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_14_15
+#define HYST_PORTF_14_15 (1 << 10)
+#else
+#define HYST_PORTF_14_15 (0 << 10)
+#endif
+
+#define HYST_PORTF_0_15 (HYST_PORTF_0_7 | HYST_PORTF_8_9 | HYST_PORTF_10 | \
+ HYST_PORTF_11 | HYST_PORTF_12_13 | HYST_PORTF_14_15)
+
+#ifdef CONFIG_GPIO_HYST_PORTG_0
+#define HYST_PORTG_0 (1 << 0)
+#else
+#define HYST_PORTG_0 (0 << 0)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_1_4
+#define HYST_PORTG_1_4 (1 << 2)
+#else
+#define HYST_PORTG_1_4 (0 << 2)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_5_6
+#define HYST_PORTG_5_6 (1 << 4)
+#else
+#define HYST_PORTG_5_6 (0 << 4)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_7_8
+#define HYST_PORTG_7_8 (1 << 6)
+#else
+#define HYST_PORTG_7_8 (0 << 6)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_9
+#define HYST_PORTG_9 (1 << 8)
+#else
+#define HYST_PORTG_9 (0 << 8)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_10
+#define HYST_PORTG_10 (1 << 10)
+#else
+#define HYST_PORTG_10 (0 << 10)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_11_13
+#define HYST_PORTG_11_13 (1 << 12)
+#else
+#define HYST_PORTG_11_13 (0 << 12)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_14_15
+#define HYST_PORTG_14_15 (1 << 14)
+#else
+#define HYST_PORTG_14_15 (0 << 14)
+#endif
+
+#define HYST_PORTG_0_15 (HYST_PORTG_0 | HYST_PORTG_1_4 | HYST_PORTG_5_6 | \
+ HYST_PORTG_7_8 | HYST_PORTG_9 | HYST_PORTG_10 | \
+ HYST_PORTG_11_13 | HYST_PORTG_14_15)
+
+#ifdef CONFIG_GPIO_HYST_PORTH_0_7
+#define HYST_PORTH_0_7 (1 << 0)
+#else
+#define HYST_PORTH_0_7 (0 << 0)
+#endif
+
+#define HYST_PORTH_0_15 (HYST_PORTH_0_7)
+
+#ifdef CONFIG_NONEGPIO_HYST_NMI_RST_BMODE
+#define HYST_NMI_RST_BMODE (1 << 2)
+#else
+#define HYST_NMI_RST_BMODE (0 << 2)
+#endif
+#ifdef CONFIG_NONEGPIO_HYST_JTAG
+#define HYST_JTAG (1 << 4)
+#else
+#define HYST_JTAG (0 << 4)
+#endif
+
+#define HYST_NONEGPIO (HYST_NMI_RST_BMODE | HYST_JTAG)
+#define HYST_NONEGPIO_MASK (0x3C)
+#endif /* CONFIG_BFIN_HYSTERESIS_CONTROL */
+
#ifdef CONFIG_BF518
#define CPU "BF518"
#define CPUID 0x27e8
diff --git a/arch/blackfin/mach-bf527/Kconfig b/arch/blackfin/mach-bf527/Kconfig
index 1f8cbe9..0ba5470 100644
--- a/arch/blackfin/mach-bf527/Kconfig
+++ b/arch/blackfin/mach-bf527/Kconfig
@@ -79,6 +79,72 @@
PORT H
endchoice
+comment "Hysteresis/Schmitt Trigger Control"
+config BFIN_HYSTERESIS_CONTROL
+ bool "Enable Hysteresis Control"
+ help
+ The ADSP-BF52x allows to control input hysteresis for Port F,
+ Port G and Port H and other processor signal inputs.
+ The Schmitt trigger enables can be set only for pin groups.
+ Saying Y will overwrite the default reset or boot loader
+ initialization.
+
+menu "PORT F"
+ depends on BFIN_HYSTERESIS_CONTROL
+config GPIO_HYST_PORTF_0_7
+ bool "Enable Hysteresis on PORTF {0...7}"
+config GPIO_HYST_PORTF_8_9
+ bool "Enable Hysteresis on PORTF {8, 9}"
+config GPIO_HYST_PORTF_10
+ bool "Enable Hysteresis on PORTF 10"
+config GPIO_HYST_PORTF_11
+ bool "Enable Hysteresis on PORTF 11"
+config GPIO_HYST_PORTF_12_13
+ bool "Enable Hysteresis on PORTF {12, 13}"
+config GPIO_HYST_PORTF_14_15
+ bool "Enable Hysteresis on PORTF {14, 15}"
+endmenu
+
+menu "PORT G"
+ depends on BFIN_HYSTERESIS_CONTROL
+config GPIO_HYST_PORTG_0
+ bool "Enable Hysteresis on PORTG 0"
+config GPIO_HYST_PORTG_1_4
+ bool "Enable Hysteresis on PORTG {1...4}"
+config GPIO_HYST_PORTG_5_6
+ bool "Enable Hysteresis on PORTG {5, 6}"
+config GPIO_HYST_PORTG_7_8
+ bool "Enable Hysteresis on PORTG {7, 8}"
+config GPIO_HYST_PORTG_9
+ bool "Enable Hysteresis on PORTG 9"
+config GPIO_HYST_PORTG_10
+ bool "Enable Hysteresis on PORTG 10"
+config GPIO_HYST_PORTG_11_13
+ bool "Enable Hysteresis on PORTG {11...13}"
+config GPIO_HYST_PORTG_14_15
+ bool "Enable Hysteresis on PORTG {14, 15}"
+endmenu
+
+menu "PORT H"
+ depends on BFIN_HYSTERESIS_CONTROL
+config GPIO_HYST_PORTH_0_7
+ bool "Enable Hysteresis on PORTH {0...7}"
+config GPIO_HYST_PORTH_8
+ bool "Enable Hysteresis on PORTH 8"
+config GPIO_HYST_PORTH_9_15
+ bool "Enable Hysteresis on PORTH {9...15}"
+endmenu
+
+menu "None-GPIO"
+ depends on BFIN_HYSTERESIS_CONTROL
+config NONEGPIO_HYST_TMR0_FS1_PPICLK
+ bool "Enable Hysteresis on {TMR0, PPI_FS1, PPI_CLK}"
+config NONEGPIO_HYST_NMI_RST_BMODE
+ bool "Enable Hysteresis on {NMI, RESET, BMODE}"
+config NONEGPIO_HYST_JTAG
+ bool "Enable Hysteresis on JTAG"
+endmenu
+
comment "Interrupt Priority Assignment"
menu "Priority"
diff --git a/arch/blackfin/mach-bf527/include/mach/bf527.h b/arch/blackfin/mach-bf527/include/mach/bf527.h
index ff68c88..8ff155b 100644
--- a/arch/blackfin/mach-bf527/include/mach/bf527.h
+++ b/arch/blackfin/mach-bf527/include/mach/bf527.h
@@ -85,6 +85,126 @@
#define AMGCTLVAL (V_AMBEN | V_AMCKEN | V_CDPRIO)
+/**************************** Hysteresis Settings ****************************/
+
+#ifdef CONFIG_BFIN_HYSTERESIS_CONTROL
+#ifdef CONFIG_GPIO_HYST_PORTF_0_7
+#define HYST_PORTF_0_7 (1 << 0)
+#else
+#define HYST_PORTF_0_7 (0 << 0)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_8_9
+#define HYST_PORTF_8_9 (1 << 2)
+#else
+#define HYST_PORTF_8_9 (0 << 2)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_10
+#define HYST_PORTF_10 (1 << 4)
+#else
+#define HYST_PORTF_10 (0 << 4)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_11
+#define HYST_PORTF_11 (1 << 6)
+#else
+#define HYST_PORTF_11 (0 << 6)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_12_13
+#define HYST_PORTF_12_13 (1 << 8)
+#else
+#define HYST_PORTF_12_13 (0 << 8)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTF_14_15
+#define HYST_PORTF_14_15 (1 << 10)
+#else
+#define HYST_PORTF_14_15 (0 << 10)
+#endif
+
+#define HYST_PORTF_0_15 (HYST_PORTF_0_7 | HYST_PORTF_8_9 | HYST_PORTF_10 | \
+ HYST_PORTF_11 | HYST_PORTF_12_13 | HYST_PORTF_14_15)
+
+#ifdef CONFIG_GPIO_HYST_PORTG_0
+#define HYST_PORTG_0 (1 << 0)
+#else
+#define HYST_PORTG_0 (0 << 0)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_1_4
+#define HYST_PORTG_1_4 (1 << 2)
+#else
+#define HYST_PORTG_1_4 (0 << 2)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_5_6
+#define HYST_PORTG_5_6 (1 << 4)
+#else
+#define HYST_PORTG_5_6 (0 << 4)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_7_8
+#define HYST_PORTG_7_8 (1 << 6)
+#else
+#define HYST_PORTG_7_8 (0 << 6)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_9
+#define HYST_PORTG_9 (1 << 8)
+#else
+#define HYST_PORTG_9 (0 << 8)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_10
+#define HYST_PORTG_10 (1 << 10)
+#else
+#define HYST_PORTG_10 (0 << 10)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_11_13
+#define HYST_PORTG_11_13 (1 << 12)
+#else
+#define HYST_PORTG_11_13 (0 << 12)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTG_14_15
+#define HYST_PORTG_14_15 (1 << 14)
+#else
+#define HYST_PORTG_14_15 (0 << 14)
+#endif
+
+#define HYST_PORTG_0_15 (HYST_PORTG_0 | HYST_PORTG_1_4 | HYST_PORTG_5_6 | \
+ HYST_PORTG_7_8 | HYST_PORTG_9 | HYST_PORTG_10 | \
+ HYST_PORTG_11_13 | HYST_PORTG_14_15)
+
+#ifdef CONFIG_GPIO_HYST_PORTH_0_7
+#define HYST_PORTH_0_7 (1 << 0)
+#else
+#define HYST_PORTH_0_7 (0 << 0)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTH_8
+#define HYST_PORTH_8 (1 << 2)
+#else
+#define HYST_PORTH_8 (0 << 2)
+#endif
+#ifdef CONFIG_GPIO_HYST_PORTH_9_15
+#define HYST_PORTH_9_15 (1 << 4)
+#else
+#define HYST_PORTH_9_15 (0 << 4)
+#endif
+
+#define HYST_PORTH_0_15 (HYST_PORTH_0_7 | HYST_PORTH_8 | HYST_PORTH_9_15)
+
+#ifdef CONFIG_NONEGPIO_HYST_TMR0_FS1_PPICLK
+#define HYST_TMR0_FS1_PPICLK (1 << 0)
+#else
+#define HYST_TMR0_FS1_PPICLK (0 << 0)
+#endif
+#ifdef CONFIG_NONEGPIO_HYST_NMI_RST_BMODE
+#define HYST_NMI_RST_BMODE (1 << 2)
+#else
+#define HYST_NMI_RST_BMODE (0 << 2)
+#endif
+#ifdef CONFIG_NONEGPIO_HYST_JTAG
+#define HYST_JTAG (1 << 4)
+#else
+#define HYST_JTAG (0 << 4)
+#endif
+
+#define HYST_NONEGPIO (HYST_TMR0_FS1_PPICLK | HYST_NMI_RST_BMODE | HYST_JTAG)
+#define HYST_NONEGPIO_MASK (0x3F)
+#endif /* CONFIG_BFIN_HYSTERESIS_CONTROL */
+
#ifdef CONFIG_BF527
#define CPU "BF527"
#define CPUID 0x27e0