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Revert "serial: sccnxp: Add DT support"
This reverts commit 85c9969074.
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>
This commit is contained in:
Greg Kroah-Hartman
parent
3ba35baa55
commit
461a8ecb2d
@ -1,53 +0,0 @@
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* NXP (Philips) SCC+++(SCN+++) serial driver
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Required properties:
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- compatible: Should be "nxp,<ictype>". The supported ICs include sc2681,
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sc2691, sc2692, sc2891, sc2892, sc28202, sc68681 and sc68692.
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- reg: Address and length of the register set for the device.
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- interrupts: Should contain the interrupt number. If omitted,
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polling mode will be used instead, so "poll-interval" property should
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be populated in this case.
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Optional properties:
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- clocks: Phandle to input clock. If omitted, default IC frequency will be
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used instead.
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- poll-interval: Poll interval time in nanoseconds.
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- vcc-supply: The regulator supplying the VCC to drive the chip.
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- nxp,sccnxp-io-cfg: Array contains values for the emulated modem signals.
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The number of values depends on the UART-number in the selected chip.
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Each value should be composed according to the following rules:
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(LINE1 << SIGNAL1) | ... | (LINEX << SIGNALX), where:
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LINE - VALUE:
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OP0 - 1
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OP1 - 2
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OP2 - 3
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OP3 - 4
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OP4 - 5
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OP5 - 6
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OP6 - 7
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OP7 - 8
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IP0 - 9
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IP1 - 10
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IP2 - 11
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IP3 - 12
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IP4 - 13
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IP5 - 14
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IP6 - 15
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SIGNAL - VALUE:
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DTR - 0
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RTS - 4
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DSR - 8
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CTS - 12
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DCD - 16
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RNG - 20
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DIR - 24
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Example (Dual UART with direction control on OP0 & OP1):
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sc2892@10100000 {
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compatible = "nxp,sc2892";
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reg = <0x10100000 0x10>;
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poll-interval = <10000>;
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clocks = <&sc2892_clk>;
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vcc-supply = <&sc2892_reg>;
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nxp,sccnxp-io-cfg = <0x01000000 0x02000000>;
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};
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@ -20,8 +20,6 @@
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/console.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/serial_core.h>
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#include <linux/serial.h>
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#include <linux/io.h>
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@ -855,25 +853,10 @@ static const struct platform_device_id sccnxp_id_table[] = {
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};
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MODULE_DEVICE_TABLE(platform, sccnxp_id_table);
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static const struct of_device_id sccnxp_dt_id_table[] = {
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{ .compatible = "nxp,sc2681", .data = &sc2681, },
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{ .compatible = "nxp,sc2691", .data = &sc2691, },
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{ .compatible = "nxp,sc2692", .data = &sc2692, },
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{ .compatible = "nxp,sc2891", .data = &sc2891, },
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{ .compatible = "nxp,sc2892", .data = &sc2892, },
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{ .compatible = "nxp,sc28202", .data = &sc28202, },
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{ .compatible = "nxp,sc68681", .data = &sc68681, },
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{ .compatible = "nxp,sc68692", .data = &sc68692, },
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{ }
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};
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MODULE_DEVICE_TABLE(of, sccnxp_dt_id_table);
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static int sccnxp_probe(struct platform_device *pdev)
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{
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struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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struct sccnxp_pdata *pdata = dev_get_platdata(&pdev->dev);
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const struct of_device_id *of_id =
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of_match_device(sccnxp_dt_id_table, &pdev->dev);
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int i, ret, uartclk;
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struct sccnxp_port *s;
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void __iomem *membase;
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@ -892,22 +875,7 @@ static int sccnxp_probe(struct platform_device *pdev)
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spin_lock_init(&s->lock);
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if (of_id) {
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s->chip = (struct sccnxp_chip *)of_id->data;
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of_property_read_u32(pdev->dev.of_node, "poll-interval",
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&s->pdata.poll_time_us);
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of_property_read_u32(pdev->dev.of_node, "reg-shift",
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&s->pdata.reg_shift);
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of_property_read_u32_array(pdev->dev.of_node,
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"nxp,sccnxp-io-cfg",
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s->pdata.mctrl_cfg, s->chip->nr);
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} else {
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s->chip = (struct sccnxp_chip *)pdev->id_entry->driver_data;
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if (pdata)
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memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata));
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}
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s->chip = (struct sccnxp_chip *)pdev->id_entry->driver_data;
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s->regulator = devm_regulator_get(&pdev->dev, "vcc");
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if (!IS_ERR(s->regulator)) {
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@ -938,11 +906,16 @@ static int sccnxp_probe(struct platform_device *pdev)
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goto err_out;
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}
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if (pdata)
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memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata));
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if (s->pdata.poll_time_us) {
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dev_info(&pdev->dev, "Using poll mode, resolution %u usecs\n",
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s->pdata.poll_time_us);
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s->poll = 1;
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} else {
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}
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if (!s->poll) {
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s->irq = platform_get_irq(pdev, 0);
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if (s->irq < 0) {
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dev_err(&pdev->dev, "Missing irq resource data\n");
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@ -1043,9 +1016,8 @@ static int sccnxp_remove(struct platform_device *pdev)
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static struct platform_driver sccnxp_uart_driver = {
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.driver = {
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.name = SCCNXP_NAME,
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.owner = THIS_MODULE,
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.of_match_table = sccnxp_dt_id_table,
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.name = SCCNXP_NAME,
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.owner = THIS_MODULE,
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},
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.probe = sccnxp_probe,
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.remove = sccnxp_remove,
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@ -78,11 +78,11 @@
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/* SCCNXP platform data structure */
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struct sccnxp_pdata {
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/* Shift for A0 line */
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u32 reg_shift;
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const u8 reg_shift;
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/* Modem control lines configuration */
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u32 mctrl_cfg[SCCNXP_MAX_UARTS];
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const u32 mctrl_cfg[SCCNXP_MAX_UARTS];
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/* Timer value for polling mode (usecs) */
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u32 poll_time_us;
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const unsigned int poll_time_us;
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};
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#endif
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