Revert "serial: sccnxp: Add DT support"

This reverts commit 85c996907473e4ef824774b97b26499adf66521f.

Alexander wishes to remove this patch as it is incorrect.

Reported-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/tty/serial/sccnxp-serial.txt b/Documentation/devicetree/bindings/tty/serial/sccnxp-serial.txt
deleted file mode 100644 (file)
index d18b169..0000000
--- a/Documentation/devicetree/bindings/tty/serial/sccnxp-serial.txt
+++ /dev/null
@@ -1,53 +0,0 @@
-* NXP (Philips) SCC+++(SCN+++) serial driver
-
-Required properties:
-- compatible: Should be "nxp,<ictype>". The supported ICs include sc2681,
-  sc2691, sc2692, sc2891, sc2892, sc28202, sc68681 and sc68692.
-- reg: Address and length of the register set for the device.
-- interrupts: Should contain the interrupt number. If omitted,
-  polling mode will be used instead, so "poll-interval" property should
-  be populated in this case.
-
-Optional properties:
-- clocks: Phandle to input clock. If omitted, default IC frequency will be
-  used instead.
-- poll-interval: Poll interval time in nanoseconds.
-- vcc-supply: The regulator supplying the VCC to drive the chip.
-- nxp,sccnxp-io-cfg: Array contains values for the emulated modem signals.
-  The number of values depends on the UART-number in the selected chip.
-  Each value should be composed according to the following rules:
-  (LINE1 << SIGNAL1) | ... | (LINEX << SIGNALX), where:
-   LINE - VALUE:
-    OP0 - 1
-    OP1 - 2
-    OP2 - 3
-    OP3 - 4
-    OP4 - 5
-    OP5 - 6
-    OP6 - 7
-    OP7 - 8
-    IP0 - 9
-    IP1 - 10
-    IP2 - 11
-    IP3 - 12
-    IP4 - 13
-    IP5 - 14
-    IP6 - 15
-   SIGNAL - VALUE:
-    DTR - 0
-    RTS - 4
-    DSR - 8
-    CTS - 12
-    DCD - 16
-    RNG - 20
-    DIR - 24
-
-Example (Dual UART with direction control on OP0 & OP1):
-sc2892@10100000 {
-       compatible = "nxp,sc2892";
-       reg = <0x10100000 0x10>;
-       poll-interval = <10000>;
-       clocks = <&sc2892_clk>;
-       vcc-supply = <&sc2892_reg>;
-       nxp,sccnxp-io-cfg = <0x01000000 0x02000000>;
-};

diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index 67f73d1..49e9bbf 100644 (file)
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -20,8 +20,6 @@
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/console.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/serial_core.h>
 #include <linux/serial.h>
 #include <linux/io.h>
@@ -855,25 +853,10 @@ static const struct platform_device_id sccnxp_id_table[] = {
 };
 MODULE_DEVICE_TABLE(platform, sccnxp_id_table);
 
-static const struct of_device_id sccnxp_dt_id_table[] = {
-       { .compatible = "nxp,sc2681",   .data = &sc2681, },
-       { .compatible = "nxp,sc2691",   .data = &sc2691, },
-       { .compatible = "nxp,sc2692",   .data = &sc2692, },
-       { .compatible = "nxp,sc2891",   .data = &sc2891, },
-       { .compatible = "nxp,sc2892",   .data = &sc2892, },
-       { .compatible = "nxp,sc28202",  .data = &sc28202, },
-       { .compatible = "nxp,sc68681",  .data = &sc68681, },
-       { .compatible = "nxp,sc68692",  .data = &sc68692, },
-       { }
-};
-MODULE_DEVICE_TABLE(of, sccnxp_dt_id_table);
-
 static int sccnxp_probe(struct platform_device *pdev)
 {
        struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        struct sccnxp_pdata *pdata = dev_get_platdata(&pdev->dev);
-       const struct of_device_id *of_id =
-               of_match_device(sccnxp_dt_id_table, &pdev->dev);
        int i, ret, uartclk;
        struct sccnxp_port *s;
        void __iomem *membase;
@@ -892,22 +875,7 @@ static int sccnxp_probe(struct platform_device *pdev)
 
        spin_lock_init(&s->lock);
 
-       if (of_id) {
-               s->chip = (struct sccnxp_chip *)of_id->data;
-
-               of_property_read_u32(pdev->dev.of_node, "poll-interval",
-                                    &s->pdata.poll_time_us);
-               of_property_read_u32(pdev->dev.of_node, "reg-shift",
-                                    &s->pdata.reg_shift);
-               of_property_read_u32_array(pdev->dev.of_node,
-                                          "nxp,sccnxp-io-cfg",
-                                          s->pdata.mctrl_cfg, s->chip->nr);
-       } else {
-               s->chip = (struct sccnxp_chip *)pdev->id_entry->driver_data;
-
-               if (pdata)
-                       memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata));
-       }
+       s->chip = (struct sccnxp_chip *)pdev->id_entry->driver_data;
 
        s->regulator = devm_regulator_get(&pdev->dev, "vcc");
        if (!IS_ERR(s->regulator)) {
@@ -938,11 +906,16 @@ static int sccnxp_probe(struct platform_device *pdev)
                goto err_out;
        }
 
+       if (pdata)
+               memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata));
+
        if (s->pdata.poll_time_us) {
                dev_info(&pdev->dev, "Using poll mode, resolution %u usecs\n",
                         s->pdata.poll_time_us);
                s->poll = 1;
-       } else {
+       }
+
+       if (!s->poll) {
                s->irq = platform_get_irq(pdev, 0);
                if (s->irq < 0) {
                        dev_err(&pdev->dev, "Missing irq resource data\n");
@@ -1043,9 +1016,8 @@ static int sccnxp_remove(struct platform_device *pdev)
 
 static struct platform_driver sccnxp_uart_driver = {
        .driver = {
-               .name           = SCCNXP_NAME,
-               .owner          = THIS_MODULE,
-               .of_match_table = sccnxp_dt_id_table,
+               .name   = SCCNXP_NAME,
+               .owner  = THIS_MODULE,
        },
        .probe          = sccnxp_probe,
        .remove         = sccnxp_remove,

diff --git a/include/linux/platform_data/serial-sccnxp.h b/include/linux/platform_data/serial-sccnxp.h
index 98373d6..af0c8c3 100644 (file)
--- a/include/linux/platform_data/serial-sccnxp.h
+++ b/include/linux/platform_data/serial-sccnxp.h
@@ -78,11 +78,11 @@
 /* SCCNXP platform data structure */
 struct sccnxp_pdata {
        /* Shift for A0 line */
-       u32     reg_shift;
+       const u8                reg_shift;
        /* Modem control lines configuration */
-       u32     mctrl_cfg[SCCNXP_MAX_UARTS];
+       const u32               mctrl_cfg[SCCNXP_MAX_UARTS];
        /* Timer value for polling mode (usecs) */
-       u32     poll_time_us;
+       const unsigned int      poll_time_us;
 };
 
 #endif