^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Freescale MXS Low Resolution Analog-to-Digital Converter driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2012 DENX Software Engineering, GmbH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2017 Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Marek Vasut <marex@denx.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mfd/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mfd/mxs-lradc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define ADC_CELL 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define TSC_CELL 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define RES_MEM 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) enum mx23_lradc_irqs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) MX23_LRADC_TS_IRQ = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) MX23_LRADC_CH0_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MX23_LRADC_CH1_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) MX23_LRADC_CH2_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) MX23_LRADC_CH3_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) MX23_LRADC_CH4_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) MX23_LRADC_CH5_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) MX23_LRADC_CH6_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) MX23_LRADC_CH7_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) enum mx28_lradc_irqs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) MX28_LRADC_TS_IRQ = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) MX28_LRADC_TRESH0_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) MX28_LRADC_TRESH1_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) MX28_LRADC_CH0_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) MX28_LRADC_CH1_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) MX28_LRADC_CH2_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) MX28_LRADC_CH3_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) MX28_LRADC_CH4_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) MX28_LRADC_CH5_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) MX28_LRADC_CH6_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) MX28_LRADC_CH7_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) MX28_LRADC_BUTTON0_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) MX28_LRADC_BUTTON1_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static struct resource mx23_adc_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) DEFINE_RES_MEM(0x0, 0x0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) DEFINE_RES_IRQ_NAMED(MX23_LRADC_CH0_IRQ, "mxs-lradc-channel0"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) DEFINE_RES_IRQ_NAMED(MX23_LRADC_CH1_IRQ, "mxs-lradc-channel1"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) DEFINE_RES_IRQ_NAMED(MX23_LRADC_CH2_IRQ, "mxs-lradc-channel2"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) DEFINE_RES_IRQ_NAMED(MX23_LRADC_CH3_IRQ, "mxs-lradc-channel3"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) DEFINE_RES_IRQ_NAMED(MX23_LRADC_CH4_IRQ, "mxs-lradc-channel4"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) DEFINE_RES_IRQ_NAMED(MX23_LRADC_CH5_IRQ, "mxs-lradc-channel5"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static struct resource mx23_touchscreen_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) DEFINE_RES_MEM(0x0, 0x0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) DEFINE_RES_IRQ_NAMED(MX23_LRADC_TS_IRQ, "mxs-lradc-touchscreen"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) DEFINE_RES_IRQ_NAMED(MX23_LRADC_CH6_IRQ, "mxs-lradc-channel6"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) DEFINE_RES_IRQ_NAMED(MX23_LRADC_CH7_IRQ, "mxs-lradc-channel7"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static struct resource mx28_adc_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) DEFINE_RES_MEM(0x0, 0x0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) DEFINE_RES_IRQ_NAMED(MX28_LRADC_TRESH0_IRQ, "mxs-lradc-thresh0"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) DEFINE_RES_IRQ_NAMED(MX28_LRADC_TRESH1_IRQ, "mxs-lradc-thresh1"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) DEFINE_RES_IRQ_NAMED(MX28_LRADC_CH0_IRQ, "mxs-lradc-channel0"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) DEFINE_RES_IRQ_NAMED(MX28_LRADC_CH1_IRQ, "mxs-lradc-channel1"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) DEFINE_RES_IRQ_NAMED(MX28_LRADC_CH2_IRQ, "mxs-lradc-channel2"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) DEFINE_RES_IRQ_NAMED(MX28_LRADC_CH3_IRQ, "mxs-lradc-channel3"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) DEFINE_RES_IRQ_NAMED(MX28_LRADC_CH4_IRQ, "mxs-lradc-channel4"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) DEFINE_RES_IRQ_NAMED(MX28_LRADC_CH5_IRQ, "mxs-lradc-channel5"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) DEFINE_RES_IRQ_NAMED(MX28_LRADC_BUTTON0_IRQ, "mxs-lradc-button0"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) DEFINE_RES_IRQ_NAMED(MX28_LRADC_BUTTON1_IRQ, "mxs-lradc-button1"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static struct resource mx28_touchscreen_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) DEFINE_RES_MEM(0x0, 0x0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) DEFINE_RES_IRQ_NAMED(MX28_LRADC_TS_IRQ, "mxs-lradc-touchscreen"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) DEFINE_RES_IRQ_NAMED(MX28_LRADC_CH6_IRQ, "mxs-lradc-channel6"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) DEFINE_RES_IRQ_NAMED(MX28_LRADC_CH7_IRQ, "mxs-lradc-channel7"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static struct mfd_cell mx23_cells[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .name = "mxs-lradc-adc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) .resources = mx23_adc_resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) .num_resources = ARRAY_SIZE(mx23_adc_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) .name = "mxs-lradc-ts",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) .resources = mx23_touchscreen_resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) .num_resources = ARRAY_SIZE(mx23_touchscreen_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static struct mfd_cell mx28_cells[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .name = "mxs-lradc-adc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) .resources = mx28_adc_resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .num_resources = ARRAY_SIZE(mx28_adc_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .name = "mxs-lradc-ts",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .resources = mx28_touchscreen_resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .num_resources = ARRAY_SIZE(mx28_touchscreen_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static const struct of_device_id mxs_lradc_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) { .compatible = "fsl,imx23-lradc", .data = (void *)IMX23_LRADC, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) { .compatible = "fsl,imx28-lradc", .data = (void *)IMX28_LRADC, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) MODULE_DEVICE_TABLE(of, mxs_lradc_dt_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static int mxs_lradc_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) const struct of_device_id *of_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct device_node *node = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct mxs_lradc *lradc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct mfd_cell *cells = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) u32 ts_wires = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) lradc = devm_kzalloc(&pdev->dev, sizeof(*lradc), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (!lradc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) of_id = of_match_device(mxs_lradc_dt_ids, &pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (!of_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) lradc->soc = (enum mxs_lradc_id)of_id->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) lradc->clk = devm_clk_get(&pdev->dev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (IS_ERR(lradc->clk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) dev_err(dev, "Failed to get the delay unit clock\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return PTR_ERR(lradc->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ret = clk_prepare_enable(lradc->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) dev_err(dev, "Failed to enable the delay unit clock\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) ret = of_property_read_u32(node, "fsl,lradc-touchscreen-wires",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) &ts_wires);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (!ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) lradc->buffer_vchans = BUFFER_VCHANS_LIMITED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) switch (ts_wires) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) lradc->touchscreen_wire = MXS_LRADC_TOUCHSCREEN_4WIRE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) case 5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (lradc->soc == IMX28_LRADC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) lradc->touchscreen_wire =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) MXS_LRADC_TOUCHSCREEN_5WIRE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) fallthrough; /* to an error message for i.MX23 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) "Unsupported number of touchscreen wires (%d)\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) , ts_wires);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) goto err_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) lradc->buffer_vchans = BUFFER_VCHANS_ALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) platform_set_drvdata(pdev, lradc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (!res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) goto err_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) switch (lradc->soc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) case IMX23_LRADC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) mx23_adc_resources[RES_MEM] = *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) mx23_touchscreen_resources[RES_MEM] = *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) cells = mx23_cells;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) case IMX28_LRADC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) mx28_adc_resources[RES_MEM] = *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) mx28_touchscreen_resources[RES_MEM] = *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) cells = mx28_cells;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) dev_err(dev, "Unsupported SoC\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) goto err_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) &cells[ADC_CELL], 1, NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) dev_err(&pdev->dev, "Failed to add the ADC subdevice\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) goto err_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (!lradc->touchscreen_wire)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) &cells[TSC_CELL], 1, NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) "Failed to add the touchscreen subdevice\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) goto err_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) err_clk:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) clk_disable_unprepare(lradc->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static int mxs_lradc_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct mxs_lradc *lradc = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) clk_disable_unprepare(lradc->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static struct platform_driver mxs_lradc_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) .name = "mxs-lradc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) .of_match_table = mxs_lradc_dt_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) .probe = mxs_lradc_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) .remove = mxs_lradc_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) module_platform_driver(mxs_lradc_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) MODULE_AUTHOR("Ksenija Stanojevic <ksenija.stanojevic@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) MODULE_DESCRIPTION("Freescale i.MX23/i.MX28 LRADC driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) MODULE_ALIAS("platform:mxs-lradc");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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