KM/kmp204x: qrio and i2c deblock code moved to common

This patch moves the qrio and i2c deblocking code to
keymile/common as it will also be used by the upcoming CENT2 board.
Signed-off-by: NHolger Brunck <holger.brunck@ch.abb.com>
CC: Priyanka Jain <priyanka.jain@nxp.com>

board/keymile/kmp204x/qrio.c → board/keymile/common/qrio.c

@@ -6,8 +6,8 @@
 
 #include <common.h>
 
-#include "../common/common.h"
-#include "kmp204x.h"
+#include "common.h"
+#include "qrio.h"
 
 /* QRIO GPIO register offsets */
 #define DIRECT_OFF		0x18
@@ -135,10 +135,10 @@ void qrio_prstcfg(u8 bit, u8 mode)
 	prstcfg = in_be32(qrio_base + PRSTCFG_OFF);
 
 	for (i = 0; i < 2; i++) {
-		if (mode & (1<<i))
-			set_bit(2*bit+i, &prstcfg);
+		if (mode & (1 << i))
+			set_bit(2 * bit + i, &prstcfg);
 		else
-			clear_bit(2*bit+i, &prstcfg);
+			clear_bit(2 * bit + i, &prstcfg);
 	}
 
 	out_be32(qrio_base + PRSTCFG_OFF, prstcfg);
@@ -180,6 +180,7 @@ void qrio_cpuwd_flag(bool flag)
 {
 	u8 reason1;
 	void __iomem *qrio_base = (void *)CONFIG_SYS_QRIO_BASE;
+
 	reason1 = in_8(qrio_base + REASON1_OFF);
 	if (flag)
 		reason1 |= REASON1_CPUWD;
@@ -188,6 +189,31 @@ void qrio_cpuwd_flag(bool flag)
 	out_8(qrio_base + REASON1_OFF, reason1);
 }
 
+#define REASON0_OFF	0x13
+#define REASON0_SWURST	0x80
+#define REASON0_CPURST	0x40
+#define REASON0_BPRST	0x20
+#define REASON0_COPRST	0x10
+#define REASON0_SWCRST	0x08
+#define REASON0_WDRST	0x04
+#define REASON0_KBRST	0x02
+#define REASON0_POWUP	0x01
+#define UNIT_RESET\
+	((REASON1_CPUWD << 8) |\
+	REASON0_POWUP | REASON0_COPRST | REASON0_KBRST |\
+	REASON0_BPRST | REASON0_SWURST | REASON0_WDRST)
+#define CORE_RESET      REASON0_SWCRST
+
+bool qrio_reason_unitrst(void)
+{
+	u16 reason;
+	void __iomem *qrio_base = (void *)CONFIG_SYS_QRIO_BASE;
+
+	reason = in_be16(qrio_base + REASON1_OFF);
+
+	return (reason & UNIT_RESET) > 0;
+}
+
 #define RSTCFG_OFF	0x11
 
 void qrio_uprstreq(u8 mode)
@@ -204,3 +230,51 @@ void qrio_uprstreq(u8 mode)
 
 	out_8(qrio_base + RSTCFG_OFF, rstcfg);
 }
+
+/* I2C deblocking uses the algorithm defined in board/keymile/common/common.c
+ * 2 dedicated QRIO GPIOs externally pull the SCL and SDA lines
+ * For I2C only the low state is activly driven and high state is pulled-up
+ * by a resistor. Therefore the deblock GPIOs are used
+ *  -> as an active output to drive a low state
+ *  -> as an open-drain input to have a pulled-up high state
+ */
+
+/* By default deblock GPIOs are floating */
+void i2c_deblock_gpio_cfg(void)
+{
+	/* set I2C bus 1 deblocking GPIOs input, but 0 value for open drain */
+	qrio_gpio_direction_input(KM_I2C_DEBLOCK_PORT,
+				  KM_I2C_DEBLOCK_SCL);
+	qrio_gpio_direction_input(KM_I2C_DEBLOCK_PORT,
+				  KM_I2C_DEBLOCK_SDA);
+
+	qrio_set_gpio(KM_I2C_DEBLOCK_PORT,
+		      KM_I2C_DEBLOCK_SCL, 0);
+	qrio_set_gpio(KM_I2C_DEBLOCK_PORT,
+		      KM_I2C_DEBLOCK_SDA, 0);
+}
+
+void set_sda(int state)
+{
+	qrio_set_opendrain_gpio(KM_I2C_DEBLOCK_PORT,
+				KM_I2C_DEBLOCK_SDA, state);
+}
+
+void set_scl(int state)
+{
+	qrio_set_opendrain_gpio(KM_I2C_DEBLOCK_PORT,
+				KM_I2C_DEBLOCK_SCL, state);
+}
+
+int get_sda(void)
+{
+	return qrio_get_gpio(KM_I2C_DEBLOCK_PORT,
+			     KM_I2C_DEBLOCK_SDA);
+}
+
+int get_scl(void)
+{
+	return qrio_get_gpio(KM_I2C_DEBLOCK_PORT,
+			     KM_I2C_DEBLOCK_SCL);
+}
+

board/keymile/common/qrio.h

+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2018 ABB
+ * Valentin Longchamp <valentin.longchamp@ch.abb.com>
+ */
+
+#ifndef __QRIO_H
+#define __QRIO_H
+
+/* QRIO GPIO ports */
+#define QRIO_GPIO_A		0x40
+#define QRIO_GPIO_B		0x60
+
+int qrio_get_gpio(u8 port_off, u8 gpio_nr);
+void qrio_set_opendrain_gpio(u8 port_off, u8 gpio_nr, u8 val);
+void qrio_set_gpio(u8 port_off, u8 gpio_nr, bool value);
+void qrio_gpio_direction_output(u8 port_off, u8 gpio_nr, bool value);
+void qrio_gpio_direction_input(u8 port_off, u8 gpio_nr);
+
+/* QRIO Periphery reset configurations */
+#define PRSTCFG_POWUP_UNIT_CORE_RST	0x0
+#define PRSTCFG_POWUP_UNIT_RST		0x1
+#define PRSTCFG_POWUP_RST		0x3
+
+void qrio_prst(u8 bit, bool en, bool wden);
+void qrio_wdmask(u8 bit, bool wden);
+void qrio_prstcfg(u8 bit, u8 mode);
+void qrio_set_leds(void);
+void qrio_enable_app_buffer(void);
+void qrio_cpuwd_flag(bool flag);
+bool qrio_reason_unitrst(void);
+
+/* QRIO uP reset request configurations */
+#define UPREQ_UNIT_RST		0x0
+#define UPREQ_CORE_RST		0x1
+
+void qrio_uprstreq(u8 mode);
+
+void i2c_deblock_gpio_cfg(void);
+#endif /* __QRIO_H */

board/keymile/kmp204x/Makefile

@@ -6,5 +6,5 @@
 # See file CREDITS for list of people who contributed to this
 # project.
 
-obj-y	:= kmp204x.o ddr.o eth.o tlb.o pci.o law.o qrio.o \
-	../common/common.o ../common/ivm.o
+obj-y	:= kmp204x.o ddr.o eth.o tlb.o pci.o law.o ../common/common.o\
+		../common/ivm.o ../common/qrio.o

board/keymile/kmp204x/kmp204x.c

@@ -24,6 +24,7 @@
 #include <fm_eth.h>
 
 #include "../common/common.h"
+#include "../common/qrio.h"
 #include "kmp204x.h"
 
 static uchar ivm_content[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
@@ -35,51 +36,6 @@ int checkboard(void)
 	return 0;
 }
 
-/* I2C deblocking uses the algorithm defined in board/keymile/common/common.c
- * 2 dedicated QRIO GPIOs externally pull the SCL and SDA lines
- * For I2C only the low state is activly driven and high state is pulled-up
- * by a resistor. Therefore the deblock GPIOs are used
- *  -> as an active output to drive a low state
- *  -> as an open-drain input to have a pulled-up high state
- */
-
-/* QRIO GPIOs used for deblocking */
-#define DEBLOCK_PORT1	GPIO_A
-#define DEBLOCK_SCL1	20
-#define DEBLOCK_SDA1	21
-
-/* By default deblock GPIOs are floating */
-static void i2c_deblock_gpio_cfg(void)
-{
-	/* set I2C bus 1 deblocking GPIOs input, but 0 value for open drain */
-	qrio_gpio_direction_input(DEBLOCK_PORT1, DEBLOCK_SCL1);
-	qrio_gpio_direction_input(DEBLOCK_PORT1, DEBLOCK_SDA1);
-
-	qrio_set_gpio(DEBLOCK_PORT1, DEBLOCK_SCL1, 0);
-	qrio_set_gpio(DEBLOCK_PORT1, DEBLOCK_SDA1, 0);
-}
-
-void set_sda(int state)
-{
-	qrio_set_opendrain_gpio(DEBLOCK_PORT1, DEBLOCK_SDA1, state);
-}
-
-void set_scl(int state)
-{
-	qrio_set_opendrain_gpio(DEBLOCK_PORT1, DEBLOCK_SCL1, state);
-}
-
-int get_sda(void)
-{
-	return qrio_get_gpio(DEBLOCK_PORT1, DEBLOCK_SDA1);
-}
-
-int get_scl(void)
-{
-	return qrio_get_gpio(DEBLOCK_PORT1, DEBLOCK_SCL1);
-}
-
-
 #define ZL30158_RST	8
 #define BFTIC4_RST	0
 #define RSTRQSR1_WDT_RR	0x00200000
@@ -297,7 +253,7 @@ int ft_board_setup(void *blob, bd_t *bd)
 #if defined(CONFIG_POST)
 
 /* DIC26_SELFTEST GPIO used to start factory test sw */
-#define SELFTEST_PORT	GPIO_A
+#define SELFTEST_PORT	QRIO_GPIO_A
 #define SELFTEST_PIN	31
 
 int post_hotkeys_pressed(void)

board/keymile/kmp204x/kmp204x.h

@@ -4,31 +4,5 @@
  * Valentin Longchamp <valentin.longchamp@keymile.com>
  */
 
-/* QRIO GPIO ports */
-#define GPIO_A			0x40
-#define GPIO_B			0x60
-
-int qrio_get_gpio(u8 port_off, u8 gpio_nr);
-void qrio_set_opendrain_gpio(u8 port_off, u8 gpio_nr, u8 val);
-void qrio_set_gpio(u8 port_off, u8 gpio_nr, bool value);
-void qrio_gpio_direction_output(u8 port_off, u8 gpio_nr, bool value);
-void qrio_gpio_direction_input(u8 port_off, u8 gpio_nr);
-
-#define PRSTCFG_POWUP_UNIT_CORE_RST	0x0
-#define PRSTCFG_POWUP_UNIT_RST		0x1
-#define PRSTCFG_POWUP_RST		0x3
-
-void qrio_prst(u8 bit, bool en, bool wden);
-void qrio_wdmask(u8 bit, bool wden);
-void qrio_prstcfg(u8 bit, u8 mode);
-void qrio_set_leds(void);
-void qrio_enable_app_buffer(void);
-void qrio_cpuwd_flag(bool flag);
-int qrio_reset_reason(void);
-
-#define UPREQ_UNIT_RST		0x0
-#define UPREQ_CORE_RST		0x1
-
-void qrio_uprstreq(u8 mode);
 
 void pci_of_setup(void *blob, bd_t *bd);

board/keymile/kmp204x/pci.c

@@ -16,13 +16,14 @@
 #include <asm/fsl_serdes.h>
 #include <linux/errno.h>
 
+#include "../common/qrio.h"
 #include "kmp204x.h"
 
 #define PROM_SEL_L	11
 /* control the PROM_SEL_L signal*/
 static void toggle_fpga_eeprom_bus(bool cpu_own)
 {
-	qrio_gpio_direction_output(GPIO_A, PROM_SEL_L, !cpu_own);
+	qrio_gpio_direction_output(QRIO_GPIO_A, PROM_SEL_L, !cpu_own);
 }
 
 #define CONF_SEL_L	10
@@ -40,17 +41,17 @@ int trigger_fpga_config(void)
 	toggle_fpga_eeprom_bus(false);
 
 	/* assert CONF_SEL_L to be able to drive FPGA_PROG_L */
-	qrio_gpio_direction_output(GPIO_A, CONF_SEL_L, 0);
+	qrio_gpio_direction_output(QRIO_GPIO_A, CONF_SEL_L, 0);
 
 	/* trigger the config start */
-	qrio_gpio_direction_output(GPIO_A, FPGA_PROG_L, 0);
+	qrio_gpio_direction_output(QRIO_GPIO_A, FPGA_PROG_L, 0);
 
 	/* small delay for INIT_L line */
 	udelay(10);
 
 	/* wait for FPGA_INIT to be asserted */
 	do {
-		init_l = qrio_get_gpio(GPIO_A, FPGA_INIT_L);
+		init_l = qrio_get_gpio(QRIO_GPIO_A, FPGA_INIT_L);
 		if (timeout-- == 0) {
 			printf("FPGA_INIT timeout\n");
 			ret = -EFAULT;
@@ -60,7 +61,7 @@ int trigger_fpga_config(void)
 	} while (init_l);
 
 	/* deassert FPGA_PROG, config should start */
-	qrio_set_gpio(GPIO_A, FPGA_PROG_L, 1);
+	qrio_set_gpio(QRIO_GPIO_A, FPGA_PROG_L, 1);
 
 	return ret;
 }
@@ -74,7 +75,7 @@ static int wait_for_fpga_config(void)
 
 	printf("PCIe FPGA config:");
 	do {
-		done = qrio_get_gpio(GPIO_A, FPGA_DONE);
+		done = qrio_get_gpio(QRIO_GPIO_A, FPGA_DONE);
 		if (timeout-- == 0) {
 			printf(" FPGA_DONE timeout\n");
 			ret = -EFAULT;
@@ -87,7 +88,7 @@ static int wait_for_fpga_config(void)
 
 err_out:
 	/* deactive CONF_SEL and give the CPU conf EEPROM access */
-	qrio_set_gpio(GPIO_A, CONF_SEL_L, 1);
+	qrio_set_gpio(QRIO_GPIO_A, CONF_SEL_L, 1);
 	toggle_fpga_eeprom_bus(true);
 
 	return ret;

include/configs/kmp204x.h

@@ -224,6 +224,10 @@ unsigned long get_board_sys_clk(unsigned long dummy);
 #define CONFIG_KM_CONSOLE_TTY	"ttyS0"
 
 /* I2C */
+/* QRIO GPIOs used for deblocking */
+#define KM_I2C_DEBLOCK_PORT     QRIO_GPIO_A
+#define KM_I2C_DEBLOCK_SCL      20
+#define KM_I2C_DEBLOCK_SDA      21
 
 #define CONFIG_SYS_I2C
 #define CONFIG_SYS_I2C_INIT_BOARD