spi-pxa2xx.c (6dc81f6fc0eaf0714bc6e959f8769705f41fd708) spi-pxa2xx.c (cddb339badb03dd96a5272195eec17e7899df154)
1/*
2 * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs
3 * Copyright (C) 2013, Intel Corporation
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.

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1035
1036 if (drv_data->ssp_type != CE4100_SSP && gpio_is_valid(chip->gpio_cs))
1037 gpio_free(chip->gpio_cs);
1038
1039 kfree(chip);
1040}
1041
1042#ifdef CONFIG_ACPI
1/*
2 * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs
3 * Copyright (C) 2013, Intel Corporation
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.

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1035
1036 if (drv_data->ssp_type != CE4100_SSP && gpio_is_valid(chip->gpio_cs))
1037 gpio_free(chip->gpio_cs);
1038
1039 kfree(chip);
1040}
1041
1042#ifdef CONFIG_ACPI
1043static int pxa2xx_spi_acpi_add_dma(struct acpi_resource *res, void *data)
1044{
1045 struct pxa2xx_spi_master *pdata = data;
1046
1047 if (res->type == ACPI_RESOURCE_TYPE_FIXED_DMA) {
1048 const struct acpi_resource_fixed_dma *dma;
1049
1050 dma = &res->data.fixed_dma;
1051 if (pdata->tx_slave_id < 0) {
1052 pdata->tx_slave_id = dma->request_lines;
1053 pdata->tx_chan_id = dma->channels;
1054 } else if (pdata->rx_slave_id < 0) {
1055 pdata->rx_slave_id = dma->request_lines;
1056 pdata->rx_chan_id = dma->channels;
1057 }
1058 }
1059
1060 /* Tell the ACPI core to skip this resource */
1061 return 1;
1062}
1063
1064static struct pxa2xx_spi_master *
1065pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev)
1066{
1067 struct pxa2xx_spi_master *pdata;
1043static struct pxa2xx_spi_master *
1044pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev)
1045{
1046 struct pxa2xx_spi_master *pdata;
1068 struct list_head resource_list;
1069 struct acpi_device *adev;
1070 struct ssp_device *ssp;
1071 struct resource *res;
1072 int devid;
1073
1074 if (!ACPI_HANDLE(&pdev->dev) ||
1075 acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev))
1076 return NULL;

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1098 ssp->type = LPSS_SSP;
1099 ssp->pdev = pdev;
1100
1101 ssp->port_id = -1;
1102 if (adev->pnp.unique_id && !kstrtoint(adev->pnp.unique_id, 0, &devid))
1103 ssp->port_id = devid;
1104
1105 pdata->num_chipselect = 1;
1047 struct acpi_device *adev;
1048 struct ssp_device *ssp;
1049 struct resource *res;
1050 int devid;
1051
1052 if (!ACPI_HANDLE(&pdev->dev) ||
1053 acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev))
1054 return NULL;

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1076 ssp->type = LPSS_SSP;
1077 ssp->pdev = pdev;
1078
1079 ssp->port_id = -1;
1080 if (adev->pnp.unique_id && !kstrtoint(adev->pnp.unique_id, 0, &devid))
1081 ssp->port_id = devid;
1082
1083 pdata->num_chipselect = 1;
1106 pdata->rx_slave_id = -1;
1107 pdata->tx_slave_id = -1;
1084 pdata->enable_dma = true;
1108
1085
1109 INIT_LIST_HEAD(&resource_list);
1110 acpi_dev_get_resources(adev, &resource_list, pxa2xx_spi_acpi_add_dma,
1111 pdata);
1112 acpi_dev_free_resource_list(&resource_list);
1113
1114 pdata->enable_dma = pdata->rx_slave_id >= 0 && pdata->tx_slave_id >= 0;
1115
1116 return pdata;
1117}
1118
1119static struct acpi_device_id pxa2xx_spi_acpi_match[] = {
1120 { "INT33C0", 0 },
1121 { "INT33C1", 0 },
1122 { },
1123};

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1209 }
1210
1211 /* Setup DMA if requested */
1212 drv_data->tx_channel = -1;
1213 drv_data->rx_channel = -1;
1214 if (platform_info->enable_dma) {
1215 status = pxa2xx_spi_dma_setup(drv_data);
1216 if (status) {
1086 return pdata;
1087}
1088
1089static struct acpi_device_id pxa2xx_spi_acpi_match[] = {
1090 { "INT33C0", 0 },
1091 { "INT33C1", 0 },
1092 { },
1093};

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1179 }
1180
1181 /* Setup DMA if requested */
1182 drv_data->tx_channel = -1;
1183 drv_data->rx_channel = -1;
1184 if (platform_info->enable_dma) {
1185 status = pxa2xx_spi_dma_setup(drv_data);
1186 if (status) {
1217 dev_warn(dev, "failed to setup DMA, using PIO\n");
1187 dev_dbg(dev, "no DMA channels available, using PIO\n");
1218 platform_info->enable_dma = false;
1219 }
1220 }
1221
1222 /* Enable SOC clock */
1223 clk_prepare_enable(ssp->clk);
1224
1225 drv_data->max_clk_rate = clk_get_rate(ssp->clk);

--- 175 unchanged lines hidden --- 		1188 platform_info->enable_dma = false;
1189 }
1190 }
1191
1192 /* Enable SOC clock */
1193 clk_prepare_enable(ssp->clk);
1194
1195 drv_data->max_clk_rate = clk_get_rate(ssp->clk);

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