oxnas: replace oxnas-restart with version to be submitted to upstream
authorDaniel Golle <daniel@makrotopia.org>
Mon, 11 Mar 2019 12:39:33 +0000 (13:39 +0100)
committerDaniel Golle <daniel@makrotopia.org>
Mon, 11 Mar 2019 12:39:33 +0000 (13:39 +0100)
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
target/linux/oxnas/files/drivers/power/reset/oxnas-restart.c

index 945a32c..e0c126e 100644 (file)
 #include <linux/platform_device.h>
 #include <linux/reboot.h>
 #include <linux/regmap.h>
-#include <dt-bindings/reset/oxsemi,ox820.h>
+
+/* bit numbers of reset control register */
+#define OX820_SYS_CTRL_RST_SCU                0
+#define OX820_SYS_CTRL_RST_COPRO              1
+#define OX820_SYS_CTRL_RST_ARM0               2
+#define OX820_SYS_CTRL_RST_ARM1               3
+#define OX820_SYS_CTRL_RST_USBHS              4
+#define OX820_SYS_CTRL_RST_USBHSPHYA          5
+#define OX820_SYS_CTRL_RST_MACA               6
+#define OX820_SYS_CTRL_RST_MAC                OX820_SYS_CTRL_RST_MACA
+#define OX820_SYS_CTRL_RST_PCIEA              7
+#define OX820_SYS_CTRL_RST_SGDMA              8
+#define OX820_SYS_CTRL_RST_CIPHER             9
+#define OX820_SYS_CTRL_RST_DDR                10
+#define OX820_SYS_CTRL_RST_SATA               11
+#define OX820_SYS_CTRL_RST_SATA_LINK          12
+#define OX820_SYS_CTRL_RST_SATA_PHY           13
+#define OX820_SYS_CTRL_RST_PCIEPHY            14
+#define OX820_SYS_CTRL_RST_STATIC             15
+#define OX820_SYS_CTRL_RST_GPIO               16
+#define OX820_SYS_CTRL_RST_UART1              17
+#define OX820_SYS_CTRL_RST_UART2              18
+#define OX820_SYS_CTRL_RST_MISC               19
+#define OX820_SYS_CTRL_RST_I2S                20
+#define OX820_SYS_CTRL_RST_SD                 21
+#define OX820_SYS_CTRL_RST_MACB               22
+#define OX820_SYS_CTRL_RST_PCIEB              23
+#define OX820_SYS_CTRL_RST_VIDEO              24
+#define OX820_SYS_CTRL_RST_DDR_PHY            25
+#define OX820_SYS_CTRL_RST_USBHSPHYB          26
+#define OX820_SYS_CTRL_RST_USBDEV             27
+#define OX820_SYS_CTRL_RST_ARMDBG             29
+#define OX820_SYS_CTRL_RST_PLLA               30
+#define OX820_SYS_CTRL_RST_PLLB               31
 
 /* bit numbers of clock control register */
-#define SYS_CTRL_CLK_COPRO              0
-#define SYS_CTRL_CLK_DMA                1
-#define SYS_CTRL_CLK_CIPHER             2
-#define SYS_CTRL_CLK_SD                 3
-#define SYS_CTRL_CLK_SATA               4
-#define SYS_CTRL_CLK_I2S                5
-#define SYS_CTRL_CLK_USBHS              6
-#define SYS_CTRL_CLK_MACA               7
-#define SYS_CTRL_CLK_MAC                SYS_CTRL_CLK_MACA
-#define SYS_CTRL_CLK_PCIEA              8
-#define SYS_CTRL_CLK_STATIC             9
-#define SYS_CTRL_CLK_MACB               10
-#define SYS_CTRL_CLK_PCIEB              11
-#define SYS_CTRL_CLK_REF600             12
-#define SYS_CTRL_CLK_USBDEV             13
-#define SYS_CTRL_CLK_DDR                14
-#define SYS_CTRL_CLK_DDRPHY             15
-#define SYS_CTRL_CLK_DDRCK              16
+#define OX820_SYS_CTRL_CLK_COPRO              0
+#define OX820_SYS_CTRL_CLK_DMA                1
+#define OX820_SYS_CTRL_CLK_CIPHER             2
+#define OX820_SYS_CTRL_CLK_SD                 3
+#define OX820_SYS_CTRL_CLK_SATA               4
+#define OX820_SYS_CTRL_CLK_I2S                5
+#define OX820_SYS_CTRL_CLK_USBHS              6
+#define OX820_SYS_CTRL_CLK_MACA               7
+#define OX820_SYS_CTRL_CLK_MAC                OX820_SYS_CTRL_CLK_MACA
+#define OX820_SYS_CTRL_CLK_PCIEA              8
+#define OX820_SYS_CTRL_CLK_STATIC             9
+#define OX820_SYS_CTRL_CLK_MACB               10
+#define OX820_SYS_CTRL_CLK_PCIEB              11
+#define OX820_SYS_CTRL_CLK_REF600             12
+#define OX820_SYS_CTRL_CLK_USBDEV             13
+#define OX820_SYS_CTRL_CLK_DDR                14
+#define OX820_SYS_CTRL_CLK_DDRPHY             15
+#define OX820_SYS_CTRL_CLK_DDRCK              16
 
 /* Regmap offsets */
-#define CLK_SET_REGOFFSET               0x2c
-#define CLK_CLR_REGOFFSET               0x30
-#define RST_SET_REGOFFSET               0x34
-#define RST_CLR_REGOFFSET               0x38
-#define SECONDARY_SEL_REGOFFSET         0x14
-#define TERTIARY_SEL_REGOFFSET          0x8c
-#define QUATERNARY_SEL_REGOFFSET        0x94
-#define DEBUG_SEL_REGOFFSET             0x9c
-#define ALTERNATIVE_SEL_REGOFFSET       0xa4
-#define PULLUP_SEL_REGOFFSET            0xac
-#define SEC_SECONDARY_SEL_REGOFFSET     0x100014
-#define SEC_TERTIARY_SEL_REGOFFSET      0x10008c
-#define SEC_QUATERNARY_SEL_REGOFFSET    0x100094
-#define SEC_DEBUG_SEL_REGOFFSET         0x10009c
-#define SEC_ALTERNATIVE_SEL_REGOFFSET   0x1000a4
-#define SEC_PULLUP_SEL_REGOFFSET        0x1000ac
+#define OX820_CLK_SET_REGOFFSET               0x2c
+#define OX820_CLK_CLR_REGOFFSET               0x30
+#define OX820_RST_SET_REGOFFSET               0x34
+#define OX820_RST_CLR_REGOFFSET               0x38
+#define OX820_SECONDARY_SEL_REGOFFSET         0x14
+#define OX820_TERTIARY_SEL_REGOFFSET          0x8c
+#define OX820_QUATERNARY_SEL_REGOFFSET        0x94
+#define OX820_DEBUG_SEL_REGOFFSET             0x9c
+#define OX820_ALTERNATIVE_SEL_REGOFFSET       0xa4
+#define OX820_PULLUP_SEL_REGOFFSET            0xac
+#define OX820_SEC_SECONDARY_SEL_REGOFFSET     0x100014
+#define OX820_SEC_TERTIARY_SEL_REGOFFSET      0x10008c
+#define OX820_SEC_QUATERNARY_SEL_REGOFFSET    0x100094
+#define OX820_SEC_DEBUG_SEL_REGOFFSET         0x10009c
+#define OX820_SEC_ALTERNATIVE_SEL_REGOFFSET   0x1000a4
+#define OX820_SEC_PULLUP_SEL_REGOFFSET        0x1000ac
 
 
 struct oxnas_restart_context {
@@ -65,7 +98,7 @@ struct oxnas_restart_context {
        struct notifier_block restart_handler;
 };
 
-static int oxnas_restart_handle(struct notifier_block *this,
+static int ox820_restart_handle(struct notifier_block *this,
                                 unsigned long mode, void *cmd)
 {
        struct oxnas_restart_context *ctx = container_of(this, struct
@@ -77,93 +110,93 @@ static int oxnas_restart_handle(struct notifier_block *this,
         * Don't touch the DDR interface as things will come to an impromptu stop
         * NB Possibly should be asserting reset for PLLB, but there are timing
         *    concerns here according to the docs */
-       value = BIT(RESET_LEON)         |
-               BIT(RESET_USBHS)        |
-               BIT(RESET_USBPHYA)      |
-               BIT(RESET_MAC)          |
-               BIT(RESET_PCIEA)        |
-               BIT(RESET_SGDMA)        |
-               BIT(RESET_CIPHER)       |
-               BIT(RESET_SATA)         |
-               BIT(RESET_SATA_LINK)    |
-               BIT(RESET_SATA_PHY)     |
-               BIT(RESET_PCIEPHY)      |
-               BIT(RESET_NAND)         |
-               BIT(RESET_UART1)        |
-               BIT(RESET_UART2)        |
-               BIT(RESET_MISC)         |
-               BIT(RESET_I2S)          |
-               BIT(RESET_SD)           |
-               BIT(RESET_MAC_2)        |
-               BIT(RESET_PCIEB)        |
-               BIT(RESET_VIDEO)        |
-               BIT(RESET_USBPHYB)      |
-               BIT(RESET_USBDEV);
-
-       regmap_write(ctx->sys_ctrl, RST_SET_REGOFFSET, value);
+       value = BIT(OX820_SYS_CTRL_RST_COPRO)           |
+               BIT(OX820_SYS_CTRL_RST_USBHS)           |
+               BIT(OX820_SYS_CTRL_RST_USBHSPHYA)       |
+               BIT(OX820_SYS_CTRL_RST_MACA)            |
+               BIT(OX820_SYS_CTRL_RST_PCIEA)           |
+               BIT(OX820_SYS_CTRL_RST_SGDMA)           |
+               BIT(OX820_SYS_CTRL_RST_CIPHER)          |
+               BIT(OX820_SYS_CTRL_RST_SATA)            |
+               BIT(OX820_SYS_CTRL_RST_SATA_LINK)       |
+               BIT(OX820_SYS_CTRL_RST_SATA_PHY)        |
+               BIT(OX820_SYS_CTRL_RST_PCIEPHY)         |
+               BIT(OX820_SYS_CTRL_RST_STATIC)          |
+               BIT(OX820_SYS_CTRL_RST_UART1)           |
+               BIT(OX820_SYS_CTRL_RST_UART2)           |
+               BIT(OX820_SYS_CTRL_RST_MISC)            |
+               BIT(OX820_SYS_CTRL_RST_I2S)             |
+               BIT(OX820_SYS_CTRL_RST_SD)              |
+               BIT(OX820_SYS_CTRL_RST_MACB)            |
+               BIT(OX820_SYS_CTRL_RST_PCIEB)           |
+               BIT(OX820_SYS_CTRL_RST_VIDEO)           |
+               BIT(OX820_SYS_CTRL_RST_USBHSPHYB)       |
+               BIT(OX820_SYS_CTRL_RST_USBDEV);
+
+       regmap_write(ctx->sys_ctrl, OX820_RST_SET_REGOFFSET, value);
 
        /* Release reset to cores as per power on defaults */
-       regmap_write(ctx->sys_ctrl, RST_CLR_REGOFFSET, BIT(RESET_GPIO));
+       regmap_write(ctx->sys_ctrl, OX820_RST_CLR_REGOFFSET, BIT(OX820_SYS_CTRL_RST_GPIO));
 
        /* Disable clocks to cores as per power-on defaults - must leave DDR
         * related clocks enabled otherwise we'll stop rather abruptly. */
        value =
-               BIT(SYS_CTRL_CLK_COPRO)         |
-               BIT(SYS_CTRL_CLK_DMA)           |
-               BIT(SYS_CTRL_CLK_CIPHER)        |
-               BIT(SYS_CTRL_CLK_SD)            |
-               BIT(SYS_CTRL_CLK_SATA)          |
-               BIT(SYS_CTRL_CLK_I2S)           |
-               BIT(SYS_CTRL_CLK_USBHS)         |
-               BIT(SYS_CTRL_CLK_MAC)           |
-               BIT(SYS_CTRL_CLK_PCIEA)         |
-               BIT(SYS_CTRL_CLK_STATIC)        |
-               BIT(SYS_CTRL_CLK_MACB)          |
-               BIT(SYS_CTRL_CLK_PCIEB)         |
-               BIT(SYS_CTRL_CLK_REF600)        |
-               BIT(SYS_CTRL_CLK_USBDEV);
-
-       regmap_write(ctx->sys_ctrl, CLK_CLR_REGOFFSET, value);
+               BIT(OX820_SYS_CTRL_CLK_COPRO)           |
+               BIT(OX820_SYS_CTRL_CLK_DMA)             |
+               BIT(OX820_SYS_CTRL_CLK_CIPHER)          |
+               BIT(OX820_SYS_CTRL_CLK_SD)              |
+               BIT(OX820_SYS_CTRL_CLK_SATA)            |
+               BIT(OX820_SYS_CTRL_CLK_I2S)             |
+               BIT(OX820_SYS_CTRL_CLK_USBHS)           |
+               BIT(OX820_SYS_CTRL_CLK_MAC)             |
+               BIT(OX820_SYS_CTRL_CLK_PCIEA)           |
+               BIT(OX820_SYS_CTRL_CLK_STATIC)          |
+               BIT(OX820_SYS_CTRL_CLK_MACB)            |
+               BIT(OX820_SYS_CTRL_CLK_PCIEB)           |
+               BIT(OX820_SYS_CTRL_CLK_REF600)          |
+               BIT(OX820_SYS_CTRL_CLK_USBDEV);
+
+       regmap_write(ctx->sys_ctrl, OX820_CLK_CLR_REGOFFSET, value);
 
        /* Enable clocks to cores as per power-on defaults */
 
        /* Set sys-control pin mux'ing as per power-on defaults */
-       regmap_write(ctx->sys_ctrl, SECONDARY_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, TERTIARY_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, QUATERNARY_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, DEBUG_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, ALTERNATIVE_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, PULLUP_SEL_REGOFFSET, 0);
-
-       regmap_write(ctx->sys_ctrl, SEC_SECONDARY_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, SEC_TERTIARY_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, SEC_QUATERNARY_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, SEC_DEBUG_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, SEC_ALTERNATIVE_SEL_REGOFFSET, 0);
-       regmap_write(ctx->sys_ctrl, SEC_PULLUP_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_SECONDARY_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_TERTIARY_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_QUATERNARY_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_DEBUG_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_ALTERNATIVE_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_PULLUP_SEL_REGOFFSET, 0);
+
+       regmap_write(ctx->sys_ctrl, OX820_SEC_SECONDARY_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_SEC_TERTIARY_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_SEC_QUATERNARY_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_SEC_DEBUG_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_SEC_ALTERNATIVE_SEL_REGOFFSET, 0);
+       regmap_write(ctx->sys_ctrl, OX820_SEC_PULLUP_SEL_REGOFFSET, 0);
 
        /* No need to save any state, as the ROM loader can determine whether
         * reset is due to power cycling or programatic action, just hit the
         * (self-clearing) CPU reset bit of the block reset register */
        value =
-               BIT(RESET_SCU) |
-               BIT(RESET_ARM0) |
-               BIT(RESET_ARM1);
+               BIT(OX820_SYS_CTRL_RST_SCU) |
+               BIT(OX820_SYS_CTRL_RST_ARM0) |
+               BIT(OX820_SYS_CTRL_RST_ARM1);
 
-       regmap_write(ctx->sys_ctrl, RST_SET_REGOFFSET, value);
+       regmap_write(ctx->sys_ctrl, OX820_RST_SET_REGOFFSET, value);
 
        pr_emerg("Unable to restart system\n");
        return NOTIFY_DONE;
 }
 
-static int oxnas_restart_probe(struct platform_device *pdev)
+static int ox820_restart_probe(struct platform_device *pdev)
 {
        struct oxnas_restart_context *ctx;
        struct regmap *sys_ctrl;
        struct device *dev = &pdev->dev;
        int err = 0;
 
-       sys_ctrl = syscon_regmap_lookup_by_compatible("oxsemi,ox820-sys-ctrl");
+       sys_ctrl = syscon_node_to_regmap(pdev->dev.of_node);
        if (IS_ERR(sys_ctrl))
                return PTR_ERR(sys_ctrl);
 
@@ -172,7 +205,7 @@ static int oxnas_restart_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        ctx->sys_ctrl = sys_ctrl;
-       ctx->restart_handler.notifier_call = oxnas_restart_handle;
+       ctx->restart_handler.notifier_call = ox820_restart_handle;
        ctx->restart_handler.priority = 192;
        err = register_restart_handler(&ctx->restart_handler);
        if (err)
@@ -181,16 +214,16 @@ static int oxnas_restart_probe(struct platform_device *pdev)
        return err;
 }
 
-static const struct of_device_id oxnas_restart_of_match[] = {
+static const struct of_device_id ox820_restart_of_match[] = {
        { .compatible = "oxsemi,ox820-sys-ctrl" },
        {}
 };
 
-static struct platform_driver oxnas_restart_driver = {
-       .probe = oxnas_restart_probe,
+static struct platform_driver ox820_restart_driver = {
+       .probe = ox820_restart_probe,
        .driver = {
-               .name = "oxnas-chip-reset",
-               .of_match_table = oxnas_restart_of_match,
+               .name = "ox820-chip-reset",
+               .of_match_table = ox820_restart_of_match,
        },
 };
-builtin_platform_driver(oxnas_restart_driver);
+builtin_platform_driver(ox820_restart_driver);