The global utilities block controls power management, I/O device
enabling, power-onreset(POR) configuration monitoring, alternate
function selection for multiplexed signals,and clock control.
This patch adds GUTS driver to manage and access global utilities
block.
Signed-off-by: Yangbo Lu <yangbo.lu@xxxxxxxxxxxxx>
---
Changes for v2:
- None
Changes for v3:
- None
Changes for v4:
- Added this patch
---
drivers/soc/Kconfig | 1 +
drivers/soc/Makefile | 1 +
drivers/soc/fsl/Kconfig | 19 ++++++++
drivers/soc/fsl/Makefile | 4 ++
drivers/soc/fsl/guts.c | 112 +++++++++++++++++++++++++++++++++++++++++++++++
include/linux/fsl/guts.h | 103 +++++++++++++++++++++++--------------------
6 files changed, 192 insertions(+), 48 deletions(-)
create mode 100644 drivers/soc/fsl/Kconfig
create mode 100644 drivers/soc/fsl/Makefile
create mode 100644 drivers/soc/fsl/guts.c
diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
index 4e853ed..68b5b90 100644
--- a/drivers/soc/Kconfig
+++ b/drivers/soc/Kconfig
@@ -7,5 +7,6 @@ source "drivers/soc/rockchip/Kconfig"
source "drivers/soc/sunxi/Kconfig"
source "drivers/soc/ti/Kconfig"
source "drivers/soc/versatile/Kconfig"
+source "drivers/soc/fsl/Kconfig"
endmenu
diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
index f2ba2e9..2747e58 100644
--- a/drivers/soc/Makefile
+++ b/drivers/soc/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_ARCH_SUNXI) += sunxi/
obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_SOC_TI) += ti/
obj-$(CONFIG_PLAT_VERSATILE) += versatile/
+obj-$(CONFIG_SOC_FSL) += fsl/
diff --git a/drivers/soc/fsl/Kconfig b/drivers/soc/fsl/Kconfig
new file mode 100644
index 0000000..09966f0
--- /dev/null
+++ b/drivers/soc/fsl/Kconfig
@@ -0,0 +1,19 @@
+#
+# FSL SOC drivers
+#
+menuconfig SOC_FSL
+ bool "Freescale SOC drivers support"
+
+if SOC_FSL
+
+config FSL_GUTS
+ tristate "QorIQ Platforms GUTS Driver"
+ help
+ Say y here to enable Freescale QorIQ platforms GUTS driver support.
+ The global utilities block controls power management, I/O device
+ enabling, power-onreset(POR) configuration monitoring, alternate
+ function selection for multiplexed signals,and clock control.
+
+ If unsure, say N.
+
+endif # SOC_FSL
diff --git a/drivers/soc/fsl/Makefile b/drivers/soc/fsl/Makefile
new file mode 100644
index 0000000..51e5c73
--- /dev/null
+++ b/drivers/soc/fsl/Makefile
@@ -0,0 +1,4 @@
+#
+# Freescale SOC drivers
+#
+obj-$(CONFIG_FSL_GUTS) += guts.o
diff --git a/drivers/soc/fsl/guts.c b/drivers/soc/fsl/guts.c
new file mode 100644
index 0000000..68e3367
--- /dev/null
+++ b/drivers/soc/fsl/guts.c
@@ -0,0 +1,112 @@
+/*
+ * Freescale QorIQ Platforms GUTS Driver
+ *
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ *
+ * Author: Yangbo Lu <yangbo.lu@xxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/fsl/guts.h>
+
+/*
+ * Table for matching compatible strings, for device tree
+ * guts node, for Freescale QorIQ SOCs.
+ * "fsl,qoriq-device-config-2.0" corresponds to T4 & B4
+ * SOCs. For the older SOCs "fsl,qoriq-device-config-1.0"
+ * string would be used.
+ */
+static const struct of_device_id guts_device_ids[] = {
+ { .compatible = "fsl,qoriq-device-config-1.0", },
+ { .compatible = "fsl,qoriq-device-config-2.0", },
+ {}
+};
+
+struct ccsr_guts __iomem *guts_regmap(void)
+{
+ struct device_node *guts_node;
+ struct ccsr_guts __iomem *guts;
+
+ guts_node = of_find_matching_node(NULL, guts_device_ids);
+ if (!guts_node)
+ return NULL;
+
+ guts = of_iomap(guts_node, 0);
+ if (!guts)
+ return NULL;
+
+ of_node_put(guts_node);
+ return guts;
+}
+EXPORT_SYMBOL_GPL(guts_regmap);
+
+u8 guts_get_reg8(void __iomem *reg)
+{
+ u8 val;
+
+ val = ioread8(reg);
+ return val;
+}
+EXPORT_SYMBOL_GPL(guts_get_reg8);
+
+void guts_set_reg8(void __iomem *reg, u8 value)
+{
+ iowrite8(value, reg);
+}
+EXPORT_SYMBOL_GPL(guts_set_reg8);
+
+u32 guts_get_reg32(void __iomem *reg)
+{
+ struct device_node *guts_node;
+ u32 val;
+
+ guts_node = of_find_matching_node(NULL, guts_device_ids);
+ if (!guts_node)
+ return 0;
+
+ if (of_property_read_bool(guts_node, "little-endian"))
+ val = ioread32(reg);
+ else
+ val = ioread32be(reg);
+
+ return val;
+}
+EXPORT_SYMBOL_GPL(guts_get_reg32);
+
+void guts_set_reg32(void __iomem *reg, u32 value)
+{
+ struct device_node *guts_node;
+
+ guts_node = of_find_matching_node(NULL, guts_device_ids);
+ if (!guts_node)
+ return;
+
+ if (of_property_read_bool(guts_node, "little-endian"))
+ iowrite32(value, reg);
+ else
+ iowrite32be(value, reg);
+}
+EXPORT_SYMBOL_GPL(guts_set_reg32);
+
+static int __init guts_drv_init(void)
+{
+ pr_info("guts: Freescale QorIQ Platforms GUTS Driver\n");
+ return 0;
+}
+module_init(guts_drv_init);
+
+static void __exit guts_drv_exit(void)
+{
+}
+module_exit(guts_drv_exit);
+
+MODULE_AUTHOR("Yangbo Lu <yangbo.lu@xxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Freescale QorIQ Platforms GUTS Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/fsl/guts.h b/include/linux/fsl/guts.h
index 84d971f..e3ae0af 100644
--- a/include/linux/fsl/guts.h
+++ b/include/linux/fsl/guts.h
@@ -29,83 +29,90 @@
* #ifdefs.
*/
struct ccsr_guts {
- __be32 porpllsr; /* 0x.0000 - POR PLL Ratio Status Register */
- __be32 porbmsr; /* 0x.0004 - POR Boot Mode Status Register */
- __be32 porimpscr; /* 0x.0008 - POR I/O Impedance Status and Control Register */
- __be32 pordevsr; /* 0x.000c - POR I/O Device Status Register */
- __be32 pordbgmsr; /* 0x.0010 - POR Debug Mode Status Register */
- __be32 pordevsr2; /* 0x.0014 - POR device status register 2 */
+ u32 porpllsr; /* 0x.0000 - POR PLL Ratio Status Register */
+ u32 porbmsr; /* 0x.0004 - POR Boot Mode Status Register */
+ u32 porimpscr; /* 0x.0008 - POR I/O Impedance Status and Control Register */
+ u32 pordevsr; /* 0x.000c - POR I/O Device Status Register */
+ u32 pordbgmsr; /* 0x.0010 - POR Debug Mode Status Register */
+ u32 pordevsr2; /* 0x.0014 - POR device status register 2 */
u8 res018[0x20 - 0x18];
- __be32 porcir; /* 0x.0020 - POR Configuration Information Register */
+ u32 porcir; /* 0x.0020 - POR Configuration Information Register */
u8 res024[0x30 - 0x24];
- __be32 gpiocr; /* 0x.0030 - GPIO Control Register */
+ u32 gpiocr; /* 0x.0030 - GPIO Control Register */
u8 res034[0x40 - 0x34];
- __be32 gpoutdr; /* 0x.0040 - General-Purpose Output Data Register */
+ u32 gpoutdr; /* 0x.0040 - General-Purpose Output Data Register */
u8 res044[0x50 - 0x44];
- __be32 gpindr; /* 0x.0050 - General-Purpose Input Data Register */
+ u32 gpindr; /* 0x.0050 - General-Purpose Input Data Register */
u8 res054[0x60 - 0x54];
- __be32 pmuxcr; /* 0x.0060 - Alternate Function Signal Multiplex Control */
- __be32 pmuxcr2; /* 0x.0064 - Alternate function signal multiplex control 2 */
- __be32 dmuxcr; /* 0x.0068 - DMA Mux Control Register */
+ u32 pmuxcr; /* 0x.0060 - Alternate Function Signal Multiplex Control */
+ u32 pmuxcr2; /* 0x.0064 - Alternate function signal multiplex control 2 */
+ u32 dmuxcr; /* 0x.0068 - DMA Mux Control Register */
u8 res06c[0x70 - 0x6c];
- __be32 devdisr; /* 0x.0070 - Device Disable Control */
+ u32 devdisr; /* 0x.0070 - Device Disable Control */
#define CCSR_GUTS_DEVDISR_TB1 0x00001000
#define CCSR_GUTS_DEVDISR_TB0 0x00004000
- __be32 devdisr2; /* 0x.0074 - Device Disable Control 2 */
+ u32 devdisr2; /* 0x.0074 - Device Disable Control 2 */
u8 res078[0x7c - 0x78];
- __be32 pmjcr; /* 0x.007c - 4 Power Management Jog Control Register */
- __be32 powmgtcsr; /* 0x.0080 - Power Management Status and Control Register */
- __be32 pmrccr; /* 0x.0084 - Power Management Reset Counter Configuration Register */
- __be32 pmpdccr; /* 0x.0088 - Power Management Power Down Counter Configuration Register */
- __be32 pmcdr; /* 0x.008c - 4Power management clock disable register */
- __be32 mcpsumr; /* 0x.0090 - Machine Check Summary Register */
- __be32 rstrscr; /* 0x.0094 - Reset Request Status and Control Register */
- __be32 ectrstcr; /* 0x.0098 - Exception reset control register */
- __be32 autorstsr; /* 0x.009c - Automatic reset status register */
- __be32 pvr; /* 0x.00a0 - Processor Version Register */
- __be32 svr; /* 0x.00a4 - System Version Register */
+ u32 pmjcr; /* 0x.007c - 4 Power Management Jog Control Register */
+ u32 powmgtcsr; /* 0x.0080 - Power Management Status and Control Register */
+ u32 pmrccr; /* 0x.0084 - Power Management Reset Counter Configuration Register */
+ u32 pmpdccr; /* 0x.0088 - Power Management Power Down Counter Configuration Register */
+ u32 pmcdr; /* 0x.008c - 4Power management clock disable register */
+ u32 mcpsumr; /* 0x.0090 - Machine Check Summary Register */
+ u32 rstrscr; /* 0x.0094 - Reset Request Status and Control Register */
+ u32 ectrstcr; /* 0x.0098 - Exception reset control register */
+ u32 autorstsr; /* 0x.009c - Automatic reset status register */
+ u32 pvr; /* 0x.00a0 - Processor Version Register */
+ u32 svr; /* 0x.00a4 - System Version Register */
u8 res0a8[0xb0 - 0xa8];
- __be32 rstcr; /* 0x.00b0 - Reset Control Register */
+ u32 rstcr; /* 0x.00b0 - Reset Control Register */
u8 res0b4[0xc0 - 0xb4];
- __be32 iovselsr; /* 0x.00c0 - I/O voltage select status register
+ u32 iovselsr; /* 0x.00c0 - I/O voltage select status register
Called 'elbcvselcr' on 86xx SOCs */
u8 res0c4[0x100 - 0xc4];
- __be32 rcwsr[16]; /* 0x.0100 - Reset Control Word Status registers
+ u32 rcwsr[16]; /* 0x.0100 - Reset Control Word Status registers
There are 16 registers */
u8 res140[0x224 - 0x140];
- __be32 iodelay1; /* 0x.0224 - IO delay control register 1 */
- __be32 iodelay2; /* 0x.0228 - IO delay control register 2 */
+ u32 iodelay1; /* 0x.0224 - IO delay control register 1 */
+ u32 iodelay2; /* 0x.0228 - IO delay control register 2 */
u8 res22c[0x604 - 0x22c];
- __be32 pamubypenr; /* 0x.604 - PAMU bypass enable register */
+ u32 pamubypenr; /* 0x.604 - PAMU bypass enable register */
u8 res608[0x800 - 0x608];
- __be32 clkdvdr; /* 0x.0800 - Clock Divide Register */
+ u32 clkdvdr; /* 0x.0800 - Clock Divide Register */
u8 res804[0x900 - 0x804];
- __be32 ircr; /* 0x.0900 - Infrared Control Register */
+ u32 ircr; /* 0x.0900 - Infrared Control Register */
u8 res904[0x908 - 0x904];
- __be32 dmacr; /* 0x.0908 - DMA Control Register */
+ u32 dmacr; /* 0x.0908 - DMA Control Register */
u8 res90c[0x914 - 0x90c];
- __be32 elbccr; /* 0x.0914 - eLBC Control Register */
+ u32 elbccr; /* 0x.0914 - eLBC Control Register */
u8 res918[0xb20 - 0x918];
- __be32 ddr1clkdr; /* 0x.0b20 - DDR1 Clock Disable Register */
- __be32 ddr2clkdr; /* 0x.0b24 - DDR2 Clock Disable Register */
- __be32 ddrclkdr; /* 0x.0b28 - DDR Clock Disable Register */
+ u32 ddr1clkdr; /* 0x.0b20 - DDR1 Clock Disable Register */
+ u32 ddr2clkdr; /* 0x.0b24 - DDR2 Clock Disable Register */
+ u32 ddrclkdr; /* 0x.0b28 - DDR Clock Disable Register */
u8 resb2c[0xe00 - 0xb2c];
- __be32 clkocr; /* 0x.0e00 - Clock Out Select Register */
+ u32 clkocr; /* 0x.0e00 - Clock Out Select Register */
u8 rese04[0xe10 - 0xe04];
- __be32 ddrdllcr; /* 0x.0e10 - DDR DLL Control Register */
+ u32 ddrdllcr; /* 0x.0e10 - DDR DLL Control Register */
u8 rese14[0xe20 - 0xe14];
- __be32 lbcdllcr; /* 0x.0e20 - LBC DLL Control Register */
- __be32 cpfor; /* 0x.0e24 - L2 charge pump fuse override register */
+ u32 lbcdllcr; /* 0x.0e20 - LBC DLL Control Register */
+ u32 cpfor; /* 0x.0e24 - L2 charge pump fuse override register */
u8 rese28[0xf04 - 0xe28];
- __be32 srds1cr0; /* 0x.0f04 - SerDes1 Control Register 0 */
- __be32 srds1cr1; /* 0x.0f08 - SerDes1 Control Register 0 */
+ u32 srds1cr0; /* 0x.0f04 - SerDes1 Control Register 0 */
+ u32 srds1cr1; /* 0x.0f08 - SerDes1 Control Register 0 */
u8 resf0c[0xf2c - 0xf0c];
- __be32 itcr; /* 0x.0f2c - Internal transaction control register */
+ u32 itcr; /* 0x.0f2c - Internal transaction control register */
u8 resf30[0xf40 - 0xf30];
- __be32 srds2cr0; /* 0x.0f40 - SerDes2 Control Register 0 */
- __be32 srds2cr1; /* 0x.0f44 - SerDes2 Control Register 0 */
+ u32 srds2cr0; /* 0x.0f40 - SerDes2 Control Register 0 */
+ u32 srds2cr1; /* 0x.0f44 - SerDes2 Control Register 0 */
} __attribute__ ((packed));
+#ifdef CONFIG_FSL_GUTS
+extern struct ccsr_guts __iomem *guts_regmap(void);
+extern void guts_set_reg8(void __iomem *reg, u8 value);
+extern void guts_set_reg32(void __iomem *reg, u32 value);
+extern u8 guts_get_reg8(void __iomem *reg);
+extern u32 guts_get_reg32(void __iomem *reg);
+#endif
/* Alternate function signal multiplex control */
#define MPC85xx_PMUXCR_QE(x) (0x8000 >> (x))
--
2.1.0.27.g96db324
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
