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This converts the two Freescale i.MX SPI drivers Freescale i.MX (CONFIG_SPI_IMX) and Freescale i.MX LPSPI (CONFIG_SPI_FSL_LPSPI) to use GPIO descriptors handled in the SPI core for GPIO chip selects whether defined in the device tree or a board file. The reason why both are converted at the same time is that they were both using the same platform data and platform device population helpers when using board files intertwining the code so this gives a cleaner cut. The platform device creation was passing a platform data container from each boardfile down to the driver using struct spi_imx_master from <linux/platform_data/spi-imx.h>, but this was only conveying the number of chipselects and an int * array of the chipselect GPIO numbers. The imx27 and imx31 platforms had code passing the now-unused platform data when creating the platform devices, this has been repurposed to pass around GPIO descriptor tables. The platform data struct that was just passing an array of integers and number of chip selects for the GPIO lines has been removed. The number of chipselects used to be passed from the board file, because this number also limits the number of native chipselects that the platform can use. To deal with this we just augment the i.MX (CONFIG_SPI_IMX) driver to support 3 chipselects if the platform does not define "num-cs" as a device property (such as from the device tree). This covers all the legacy boards as these use <= 3 native chip selects (or GPIO lines, and in that case the number of chip selects is determined by the core from the number of available GPIO lines). Any new boards should use device tree, so this is a reasonable simplification to cover all old boards. The LPSPI driver never assigned the number of chipselects and thus always fall back to the core default of 1 chip select if no GPIOs are defined in the device tree. The Freescale i.MX driver was already partly utilizing the SPI core to obtain the GPIO numbers from the device tree, so this completes the transtion to let the core handle all of it. All board files and the core i.MX boardfile registration code is augmented to account for these changes. This has been compile-tested with the imx_v4_v5_defconfig and the imx_v6_v7_defconfig. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Shawn Guo <shawnguo@kernel.org> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Robin Gong <yibin.gong@nxp.com> Cc: Trent Piepho <tpiepho@impinj.com> Cc: Clark Wang <xiaoning.wang@nxp.com> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Fabio Estevam <festevam@gmail.com> Cc: NXP Linux Team <linux-imx@nxp.com> Link: https://lore.kernel.org/r/20200625200252.207614-1-linus.walleij@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
81 lines
3.1 KiB
C
81 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2010 Pengutronix
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* Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
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*/
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#include "devices/devices-common.h"
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extern const struct imx_fsl_usb2_udc_data imx31_fsl_usb2_udc_data;
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#define imx31_add_fsl_usb2_udc(pdata) \
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imx_add_fsl_usb2_udc(&imx31_fsl_usb2_udc_data, pdata)
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extern const struct imx_imx2_wdt_data imx31_imx2_wdt_data;
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#define imx31_add_imx2_wdt() \
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imx_add_imx2_wdt(&imx31_imx2_wdt_data)
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extern const struct imx_imx_i2c_data imx31_imx_i2c_data[];
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#define imx31_add_imx_i2c(id, pdata) \
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imx_add_imx_i2c(&imx31_imx_i2c_data[id], pdata)
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#define imx31_add_imx_i2c0(pdata) imx31_add_imx_i2c(0, pdata)
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#define imx31_add_imx_i2c1(pdata) imx31_add_imx_i2c(1, pdata)
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#define imx31_add_imx_i2c2(pdata) imx31_add_imx_i2c(2, pdata)
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extern const struct imx_imx_keypad_data imx31_imx_keypad_data;
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#define imx31_add_imx_keypad(pdata) \
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imx_add_imx_keypad(&imx31_imx_keypad_data, pdata)
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extern const struct imx_imx_ssi_data imx31_imx_ssi_data[];
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#define imx31_add_imx_ssi(id, pdata) \
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imx_add_imx_ssi(&imx31_imx_ssi_data[id], pdata)
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extern const struct imx_imx_uart_1irq_data imx31_imx_uart_data[];
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#define imx31_add_imx_uart(id, pdata) \
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imx_add_imx_uart_1irq(&imx31_imx_uart_data[id], pdata)
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#define imx31_add_imx_uart0(pdata) imx31_add_imx_uart(0, pdata)
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#define imx31_add_imx_uart1(pdata) imx31_add_imx_uart(1, pdata)
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#define imx31_add_imx_uart2(pdata) imx31_add_imx_uart(2, pdata)
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#define imx31_add_imx_uart3(pdata) imx31_add_imx_uart(3, pdata)
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#define imx31_add_imx_uart4(pdata) imx31_add_imx_uart(4, pdata)
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extern const struct imx_ipu_core_data imx31_ipu_core_data;
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#define imx31_add_ipu_core() \
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imx_add_ipu_core(&imx31_ipu_core_data)
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#define imx31_alloc_mx3_camera(pdata) \
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imx_alloc_mx3_camera(&imx31_ipu_core_data, pdata)
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#define imx31_add_mx3_sdc_fb(pdata) \
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imx_add_mx3_sdc_fb(&imx31_ipu_core_data, pdata)
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extern const struct imx_mxc_ehci_data imx31_mxc_ehci_otg_data;
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#define imx31_add_mxc_ehci_otg(pdata) \
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imx_add_mxc_ehci(&imx31_mxc_ehci_otg_data, pdata)
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extern const struct imx_mxc_ehci_data imx31_mxc_ehci_hs_data[];
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#define imx31_add_mxc_ehci_hs(id, pdata) \
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imx_add_mxc_ehci(&imx31_mxc_ehci_hs_data[id - 1], pdata)
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extern const struct imx_mxc_mmc_data imx31_mxc_mmc_data[];
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#define imx31_add_mxc_mmc(id, pdata) \
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imx_add_mxc_mmc(&imx31_mxc_mmc_data[id], pdata)
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extern const struct imx_mxc_nand_data imx31_mxc_nand_data;
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#define imx31_add_mxc_nand(pdata) \
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imx_add_mxc_nand(&imx31_mxc_nand_data, pdata)
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extern const struct imx_mxc_rtc_data imx31_mxc_rtc_data;
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#define imx31_add_mxc_rtc() \
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imx_add_mxc_rtc(&imx31_mxc_rtc_data)
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extern const struct imx_mxc_w1_data imx31_mxc_w1_data;
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#define imx31_add_mxc_w1() \
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imx_add_mxc_w1(&imx31_mxc_w1_data)
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extern const struct imx_spi_imx_data imx31_cspi_data[];
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#define imx31_add_cspi(id, gtable) \
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imx_add_spi_imx(&imx31_cspi_data[id], gtable)
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#define imx31_add_spi_imx0(gtable) imx31_add_cspi(0, gtable)
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#define imx31_add_spi_imx1(gtable) imx31_add_cspi(1, gtable)
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#define imx31_add_spi_imx2(gtable) imx31_add_cspi(2, gtable)
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extern const struct imx_pata_imx_data imx31_pata_imx_data;
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#define imx31_add_pata_imx() \
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imx_add_pata_imx(&imx31_pata_imx_data)
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