[U-Boot] [PATCH v2 10/10] powerpc, 8xx: move Serial driver to drivers/serial/

Christophe Leroy christophe.leroy at c-s.fr
Thu Jul 6 08:33:27 UTC 2017 

At the same time, move to Kconfig

Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>
---
 README                                             | 19 --------
 arch/powerpc/cpu/mpc8xx/Makefile                   |  1 -
 drivers/serial/Kconfig                             | 53 ++++++++++++++++++++++
 drivers/serial/Makefile                            |  1 +
 .../serial.c => drivers/serial/serial_mpc8xx.c     | 23 ----------
 scripts/config_whitelist.txt                       |  7 ---
 6 files changed, 54 insertions(+), 50 deletions(-)
 rename arch/powerpc/cpu/mpc8xx/serial.c => drivers/serial/serial_mpc8xx.c (93%)

diff --git a/README b/README
index 0f204be0ca..c5ddf326b3 100644
--- a/README
+++ b/README
@@ -691,29 +691,10 @@ The following options need to be configured:
 		Define this variable to enable hw flow control in serial driver.
 		Current user of this option is drivers/serial/nsl16550.c driver
 
-- Console Interface:
-		Depending on board, define exactly one serial port
-		(CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2),
-		or switch off the serial console by defining
-		CONFIG_8xx_CONS_NONE
-
-		Note: if CONFIG_8xx_CONS_NONE is defined, the serial
-		port routines must be defined elsewhere
-		(i.e. serial_init(), serial_getc(), ...)
-
 - Console Baudrate:
 		CONFIG_BAUDRATE - in bps
 		Select one of the baudrates listed in
 		CONFIG_SYS_BAUDRATE_TABLE, see below.
-		CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale
-
-- Console Rx buffer length
-		With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
-		the maximum receive buffer length for the SMC.
-		This option is actual only for 8xx possible.
-		If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
-		must be defined, to setup the maximum idle timeout for
-		the SMC.
 
 - Autoboot Command:
 		CONFIG_BOOTCOMMAND
diff --git a/arch/powerpc/cpu/mpc8xx/Makefile b/arch/powerpc/cpu/mpc8xx/Makefile
index 173cf01869..b40bffb047 100644
--- a/arch/powerpc/cpu/mpc8xx/Makefile
+++ b/arch/powerpc/cpu/mpc8xx/Makefile
@@ -13,5 +13,4 @@ obj-$(CONFIG_OF_LIBFDT) += fdt.o
 obj-$(CONFIG_CMD_IMMAP) += immap.o
 obj-y	+= interrupts.o
 obj-$(CONFIG_CMD_REGINFO) += reginfo.o
-obj-y	+= serial.o
 obj-y	+= speed.o
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index c64f4a6d7b..b7dd2ac103 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -491,4 +491,57 @@ config STI_ASC_SERIAL
 	  on STiH410 SoC. This is a basic implementation,  it supports
 	  following baudrate 9600, 19200, 38400, 57600 and 115200.
 
+config MPC8XX_CONS
+	bool "Console driver for MPC8XX"
+	depends on 8xx
+	default y
+
+choice
+	prompt "Console port"
+	default 8xx_CONS_SMC1
+	depends on MPC8XX_CONS
+	help
+	  Depending on board, select one serial port
+	  (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2)
+
+config 8xx_CONS_SMC1
+	bool "SMC1"
+
+config 8xx_CONS_SMC2
+	bool "SMC2"
+
+endchoice
+
+config SYS_SMC_RXBUFLEN
+	int "Console Rx buffer length"
+	depends on MPC8XX_CONS
+	default 1
+	help
+	  With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
+	  the maximum receive buffer length for the SMC.
+	  This option is actual only for 8xx possible.
+	  If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
+	  must be defined, to setup the maximum idle timeout for
+	  the SMC.
+
+config SYS_MAXIDLE
+	int "maximum idle timeout"
+	depends on MPC8XX_CONS
+	default 0
+
+config SYS_BRGCLK_PRESCALE
+	int "BRG Clock Prescale"
+	depends on MPC8XX_CONS
+	default 1
+
+config SYS_SDSR
+	hex "SDSR Value"
+	depends on MPC8XX_CONS
+	default 0x83
+
+config SYS_SDMR
+	hex "SDMR Value"
+	depends on MPC8XX_CONS
+	default 0
+
 endmenu
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index dca31b295c..72a6996a0a 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_STM32X7_SERIAL) += serial_stm32x7.o
 obj-$(CONFIG_BCM283X_MU_SERIAL) += serial_bcm283x_mu.o
 obj-$(CONFIG_MSM_SERIAL) += serial_msm.o
 obj-$(CONFIG_MVEBU_A3700_UART) += serial_mvebu_a3700.o
+obj-$(CONFIG_MPC8XX_CONS) += serial_mpc8xx.o
 
 ifndef CONFIG_SPL_BUILD
 obj-$(CONFIG_USB_TTY) += usbtty.o
diff --git a/arch/powerpc/cpu/mpc8xx/serial.c b/drivers/serial/serial_mpc8xx.c
similarity index 93%
rename from arch/powerpc/cpu/mpc8xx/serial.c
rename to drivers/serial/serial_mpc8xx.c
index 114dfe9b4b..26a8085a69 100644
--- a/arch/powerpc/cpu/mpc8xx/serial.c
+++ b/drivers/serial/serial_mpc8xx.c
@@ -14,8 +14,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#if !defined(CONFIG_8xx_CONS_NONE)	/* No Console at all */
-
 #if defined(CONFIG_8xx_CONS_SMC1)	/* Console on SMC1 */
 #define	SMC_INDEX	0
 #define PROFF_SMC	PROFF_SMC1
@@ -30,15 +28,6 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #endif /* CONFIG_8xx_CONS_SMCx */
 
-#if !defined(CONFIG_SYS_SMC_RXBUFLEN)
-#define CONFIG_SYS_SMC_RXBUFLEN	1
-#define CONFIG_SYS_MAXIDLE	0
-#else
-#if !defined(CONFIG_SYS_MAXIDLE)
-#error "you must define CONFIG_SYS_MAXIDLE"
-#endif
-#endif
-
 struct serialbuffer {
 	cbd_t	rxbd;		/* Rx BD */
 	cbd_t	txbd;		/* Tx BD */
@@ -56,9 +45,7 @@ static void serial_setdivisor(cpm8xx_t __iomem *cp)
 		divisor = (50 * 1000 * 1000 + 8 * 9600) / 16 / 9600;
 	}
 
-#ifdef CONFIG_SYS_BRGCLK_PRESCALE
 	divisor /= CONFIG_SYS_BRGCLK_PRESCALE;
-#endif
 
 	if (divisor <= 0x1000)
 		out_be32(&cp->cp_brgc1, ((divisor - 1) << 1) | CPM_BRG_EN);
@@ -110,18 +97,10 @@ static int smc_init(void)
 	out_be32(&im->im_siu_conf.sc_sdcr, 1);
 
 	/* clear error conditions */
-#ifdef	CONFIG_SYS_SDSR
 	out_8(&im->im_sdma.sdma_sdsr, CONFIG_SYS_SDSR);
-#else
-	out_8(&im->im_sdma.sdma_sdsr, 0x83);
-#endif
 
 	/* clear SDMA interrupt mask */
-#ifdef	CONFIG_SYS_SDMR
 	out_8(&im->im_sdma.sdma_sdmr, CONFIG_SYS_SDMR);
-#else
-	out_8(&im->im_sdma.sdma_sdmr, 0x00);
-#endif
 
 	/* Use Port B for SMCx instead of other functions. */
 	setbits_be32(&cp->cp_pbpar, IOPINS);
@@ -275,5 +254,3 @@ void mpc8xx_serial_initialize(void)
 {
 	serial_register(&serial_smc_device);
 }
-
-#endif	/* CONFIG_8xx_CONS_NONE */
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 43b44025dd..95f27b6ead 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -12,9 +12,6 @@ CONFIG_83XX_GENERIC_PCIE_REGISTER_HOSES
 CONFIG_83XX_PCICLK
 CONFIG_83XX_PCI_STREAMING
 CONFIG_88F5182
-CONFIG_8xx_CONS_NONE
-CONFIG_8xx_CONS_SMC1
-CONFIG_8xx_CONS_SMC2
 CONFIG_A003399_NOR_WORKAROUND
 CONFIG_A008044_WORKAROUND
 CONFIG_ACX517AKN
@@ -2518,7 +2515,6 @@ CONFIG_SYS_BR6_64M
 CONFIG_SYS_BR6_8M
 CONFIG_SYS_BR6_PRELIM
 CONFIG_SYS_BR7_PRELIM
-CONFIG_SYS_BRGCLK_PRESCALE
 CONFIG_SYS_BUSCLK
 CONFIG_SYS_CACHELINE_SHIFT
 CONFIG_SYS_CACHE_ACR0
@@ -4675,7 +4671,6 @@ CONFIG_SYS_SDIO_BASE0
 CONFIG_SYS_SDIO_BASE1
 CONFIG_SYS_SDIO_BASE2
 CONFIG_SYS_SDIO_BASE3
-CONFIG_SYS_SDMR
 CONFIG_SYS_SDRAM
 CONFIG_SYS_SDRAM1
 CONFIG_SYS_SDRAM_BASE
@@ -4721,7 +4716,6 @@ CONFIG_SYS_SDRC_MR_VAL5
 CONFIG_SYS_SDRC_TR_VAL
 CONFIG_SYS_SDRC_TR_VAL1
 CONFIG_SYS_SDRC_TR_VAL2
-CONFIG_SYS_SDSR
 CONFIG_SYS_SD_VOLTAGE
 CONFIG_SYS_SEC_MON_ADDR
 CONFIG_SYS_SEC_MON_OFFSET
@@ -4754,7 +4748,6 @@ CONFIG_SYS_SMC0_MODE0_VAL
 CONFIG_SYS_SMC0_PULSE0_VAL
 CONFIG_SYS_SMC0_SETUP0_VAL
 CONFIG_SYS_SMC_CSR0_VAL
-CONFIG_SYS_SMC_RXBUFLEN
 CONFIG_SYS_SMI_BASE
 CONFIG_SYS_SPANSION_BASE
 CONFIG_SYS_SPANSION_BOOT
-- 
2.12.0

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