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bad8a8afe1
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Acked-by: Steen Hegelund <Steen.Hegelund@microchip.com> Link: https://lore.kernel.org/r/20230714174939.4063667-1-robh@kernel.org Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
524 lines
15 KiB
C
524 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2016 Socionext Inc.
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
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*/
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#include <linux/mfd/syscon.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/reset-controller.h>
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struct uniphier_reset_data {
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unsigned int id;
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unsigned int reg;
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unsigned int bit;
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unsigned int flags;
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#define UNIPHIER_RESET_ACTIVE_LOW BIT(0)
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};
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#define UNIPHIER_RESET_ID_END ((unsigned int)(-1))
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#define UNIPHIER_RESET_END \
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{ .id = UNIPHIER_RESET_ID_END }
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#define UNIPHIER_RESET(_id, _reg, _bit) \
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{ \
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.id = (_id), \
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.reg = (_reg), \
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.bit = (_bit), \
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}
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#define UNIPHIER_RESETX(_id, _reg, _bit) \
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{ \
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.id = (_id), \
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.reg = (_reg), \
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.bit = (_bit), \
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.flags = UNIPHIER_RESET_ACTIVE_LOW, \
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}
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/* System reset data */
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static const struct uniphier_reset_data uniphier_ld4_sys_reset_data[] = {
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UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
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UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (Ether, HSC, MIO) */
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UNIPHIER_RESET_END,
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};
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static const struct uniphier_reset_data uniphier_pro4_sys_reset_data[] = {
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UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
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UNIPHIER_RESETX(6, 0x2000, 12), /* Ether */
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UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (HSC, MIO, RLE) */
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UNIPHIER_RESETX(12, 0x2000, 6), /* GIO (Ether, SATA, USB3) */
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UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
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UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
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UNIPHIER_RESETX(28, 0x2000, 18), /* SATA0 */
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UNIPHIER_RESETX(29, 0x2004, 18), /* SATA1 */
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UNIPHIER_RESETX(30, 0x2000, 19), /* SATA-PHY */
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UNIPHIER_RESETX(40, 0x2000, 13), /* AIO */
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UNIPHIER_RESET_END,
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};
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static const struct uniphier_reset_data uniphier_pro5_sys_reset_data[] = {
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UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
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UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (HSC) */
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UNIPHIER_RESETX(12, 0x2000, 6), /* GIO (PCIe, USB3) */
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UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
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UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
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UNIPHIER_RESETX(24, 0x2008, 2), /* PCIe */
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UNIPHIER_RESETX(40, 0x2000, 13), /* AIO */
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UNIPHIER_RESET_END,
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};
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static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = {
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UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
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UNIPHIER_RESETX(6, 0x2000, 12), /* Ether */
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UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (HSC, RLE) */
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UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
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UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
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UNIPHIER_RESETX(16, 0x2014, 4), /* USB30-PHY0 */
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UNIPHIER_RESETX(17, 0x2014, 0), /* USB30-PHY1 */
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UNIPHIER_RESETX(18, 0x2014, 2), /* USB30-PHY2 */
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UNIPHIER_RESETX(20, 0x2014, 5), /* USB31-PHY0 */
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UNIPHIER_RESETX(21, 0x2014, 1), /* USB31-PHY1 */
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UNIPHIER_RESETX(28, 0x2014, 12), /* SATA */
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UNIPHIER_RESET(30, 0x2014, 8), /* SATA-PHY (active high) */
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UNIPHIER_RESETX(40, 0x2000, 13), /* AIO */
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UNIPHIER_RESET_END,
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};
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static const struct uniphier_reset_data uniphier_ld11_sys_reset_data[] = {
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UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
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UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
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UNIPHIER_RESETX(6, 0x200c, 6), /* Ether */
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UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC (HSC, MIO) */
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UNIPHIER_RESETX(9, 0x200c, 9), /* HSC */
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UNIPHIER_RESETX(40, 0x2008, 0), /* AIO */
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UNIPHIER_RESETX(41, 0x2008, 1), /* EVEA */
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UNIPHIER_RESETX(42, 0x2010, 2), /* EXIV */
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UNIPHIER_RESET_END,
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};
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static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = {
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UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
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UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
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UNIPHIER_RESETX(6, 0x200c, 6), /* Ether */
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UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC (HSC) */
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UNIPHIER_RESETX(9, 0x200c, 9), /* HSC */
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UNIPHIER_RESETX(14, 0x200c, 5), /* USB30 */
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UNIPHIER_RESETX(16, 0x200c, 12), /* USB30-PHY0 */
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UNIPHIER_RESETX(17, 0x200c, 13), /* USB30-PHY1 */
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UNIPHIER_RESETX(18, 0x200c, 14), /* USB30-PHY2 */
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UNIPHIER_RESETX(19, 0x200c, 15), /* USB30-PHY3 */
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UNIPHIER_RESETX(24, 0x200c, 4), /* PCIe */
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UNIPHIER_RESETX(40, 0x2008, 0), /* AIO */
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UNIPHIER_RESETX(41, 0x2008, 1), /* EVEA */
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UNIPHIER_RESETX(42, 0x2010, 2), /* EXIV */
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UNIPHIER_RESET_END,
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};
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static const struct uniphier_reset_data uniphier_pxs3_sys_reset_data[] = {
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UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
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UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
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UNIPHIER_RESETX(6, 0x200c, 9), /* Ether0 */
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UNIPHIER_RESETX(7, 0x200c, 10), /* Ether1 */
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UNIPHIER_RESETX(8, 0x200c, 12), /* STDMAC */
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UNIPHIER_RESETX(12, 0x200c, 4), /* USB30 link */
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UNIPHIER_RESETX(13, 0x200c, 5), /* USB31 link */
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UNIPHIER_RESETX(16, 0x200c, 16), /* USB30-PHY0 */
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UNIPHIER_RESETX(17, 0x200c, 18), /* USB30-PHY1 */
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UNIPHIER_RESETX(18, 0x200c, 20), /* USB30-PHY2 */
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UNIPHIER_RESETX(20, 0x200c, 17), /* USB31-PHY0 */
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UNIPHIER_RESETX(21, 0x200c, 19), /* USB31-PHY1 */
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UNIPHIER_RESETX(24, 0x200c, 3), /* PCIe */
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UNIPHIER_RESETX(28, 0x200c, 7), /* SATA0 */
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UNIPHIER_RESETX(29, 0x200c, 8), /* SATA1 */
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UNIPHIER_RESETX(30, 0x200c, 21), /* SATA-PHY */
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UNIPHIER_RESETX(40, 0x2008, 0), /* AIO */
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UNIPHIER_RESETX(42, 0x2010, 2), /* EXIV */
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UNIPHIER_RESET_END,
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};
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static const struct uniphier_reset_data uniphier_nx1_sys_reset_data[] = {
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UNIPHIER_RESETX(4, 0x2008, 8), /* eMMC */
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UNIPHIER_RESETX(6, 0x200c, 0), /* Ether */
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UNIPHIER_RESETX(12, 0x200c, 16), /* USB30 link */
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UNIPHIER_RESETX(16, 0x200c, 24), /* USB30-PHY0 */
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UNIPHIER_RESETX(17, 0x200c, 25), /* USB30-PHY1 */
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UNIPHIER_RESETX(18, 0x200c, 26), /* USB30-PHY2 */
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UNIPHIER_RESETX(24, 0x200c, 8), /* PCIe */
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UNIPHIER_RESETX(52, 0x2010, 0), /* VOC */
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UNIPHIER_RESETX(58, 0x2010, 8), /* HDMI-Tx */
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UNIPHIER_RESET_END,
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};
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/* Media I/O reset data */
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#define UNIPHIER_MIO_RESET_SD(id, ch) \
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UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 0)
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#define UNIPHIER_MIO_RESET_SD_BRIDGE(id, ch) \
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UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 26)
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#define UNIPHIER_MIO_RESET_EMMC_HW_RESET(id, ch) \
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UNIPHIER_RESETX((id), 0x80 + 0x200 * (ch), 0)
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#define UNIPHIER_MIO_RESET_USB2(id, ch) \
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UNIPHIER_RESETX((id), 0x114 + 0x200 * (ch), 0)
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#define UNIPHIER_MIO_RESET_USB2_BRIDGE(id, ch) \
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UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 24)
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#define UNIPHIER_MIO_RESET_DMAC(id) \
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UNIPHIER_RESETX((id), 0x110, 17)
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static const struct uniphier_reset_data uniphier_ld4_mio_reset_data[] = {
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UNIPHIER_MIO_RESET_SD(0, 0),
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UNIPHIER_MIO_RESET_SD(1, 1),
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UNIPHIER_MIO_RESET_SD(2, 2),
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UNIPHIER_MIO_RESET_SD_BRIDGE(3, 0),
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UNIPHIER_MIO_RESET_SD_BRIDGE(4, 1),
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UNIPHIER_MIO_RESET_SD_BRIDGE(5, 2),
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UNIPHIER_MIO_RESET_EMMC_HW_RESET(6, 1),
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UNIPHIER_MIO_RESET_DMAC(7),
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UNIPHIER_MIO_RESET_USB2(8, 0),
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UNIPHIER_MIO_RESET_USB2(9, 1),
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UNIPHIER_MIO_RESET_USB2(10, 2),
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UNIPHIER_MIO_RESET_USB2_BRIDGE(12, 0),
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UNIPHIER_MIO_RESET_USB2_BRIDGE(13, 1),
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UNIPHIER_MIO_RESET_USB2_BRIDGE(14, 2),
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UNIPHIER_RESET_END,
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};
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static const struct uniphier_reset_data uniphier_pro5_sd_reset_data[] = {
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UNIPHIER_MIO_RESET_SD(0, 0),
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UNIPHIER_MIO_RESET_SD(1, 1),
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UNIPHIER_MIO_RESET_EMMC_HW_RESET(6, 1),
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UNIPHIER_RESET_END,
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};
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/* Peripheral reset data */
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#define UNIPHIER_PERI_RESET_UART(id, ch) \
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UNIPHIER_RESETX((id), 0x114, 19 + (ch))
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#define UNIPHIER_PERI_RESET_I2C(id, ch) \
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UNIPHIER_RESETX((id), 0x114, 5 + (ch))
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#define UNIPHIER_PERI_RESET_FI2C(id, ch) \
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UNIPHIER_RESETX((id), 0x114, 24 + (ch))
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#define UNIPHIER_PERI_RESET_SCSSI(id, ch) \
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UNIPHIER_RESETX((id), 0x110, 17 + (ch))
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#define UNIPHIER_PERI_RESET_MCSSI(id) \
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UNIPHIER_RESETX((id), 0x114, 14)
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static const struct uniphier_reset_data uniphier_ld4_peri_reset_data[] = {
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UNIPHIER_PERI_RESET_UART(0, 0),
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UNIPHIER_PERI_RESET_UART(1, 1),
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UNIPHIER_PERI_RESET_UART(2, 2),
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UNIPHIER_PERI_RESET_UART(3, 3),
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UNIPHIER_PERI_RESET_I2C(4, 0),
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UNIPHIER_PERI_RESET_I2C(5, 1),
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UNIPHIER_PERI_RESET_I2C(6, 2),
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UNIPHIER_PERI_RESET_I2C(7, 3),
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UNIPHIER_PERI_RESET_I2C(8, 4),
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UNIPHIER_PERI_RESET_SCSSI(11, 0),
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UNIPHIER_RESET_END,
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};
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static const struct uniphier_reset_data uniphier_pro4_peri_reset_data[] = {
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UNIPHIER_PERI_RESET_UART(0, 0),
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UNIPHIER_PERI_RESET_UART(1, 1),
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UNIPHIER_PERI_RESET_UART(2, 2),
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UNIPHIER_PERI_RESET_UART(3, 3),
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UNIPHIER_PERI_RESET_FI2C(4, 0),
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UNIPHIER_PERI_RESET_FI2C(5, 1),
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UNIPHIER_PERI_RESET_FI2C(6, 2),
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UNIPHIER_PERI_RESET_FI2C(7, 3),
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UNIPHIER_PERI_RESET_FI2C(8, 4),
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UNIPHIER_PERI_RESET_FI2C(9, 5),
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UNIPHIER_PERI_RESET_FI2C(10, 6),
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UNIPHIER_PERI_RESET_SCSSI(11, 0),
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UNIPHIER_PERI_RESET_SCSSI(12, 1),
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UNIPHIER_PERI_RESET_SCSSI(13, 2),
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UNIPHIER_PERI_RESET_SCSSI(14, 3),
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UNIPHIER_PERI_RESET_MCSSI(15),
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UNIPHIER_RESET_END,
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};
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/* Analog signal amplifiers reset data */
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static const struct uniphier_reset_data uniphier_ld11_adamv_reset_data[] = {
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UNIPHIER_RESETX(0, 0x10, 6), /* EVEA */
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UNIPHIER_RESET_END,
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};
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/* core implementaton */
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struct uniphier_reset_priv {
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struct reset_controller_dev rcdev;
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struct device *dev;
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struct regmap *regmap;
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const struct uniphier_reset_data *data;
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};
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#define to_uniphier_reset_priv(_rcdev) \
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container_of(_rcdev, struct uniphier_reset_priv, rcdev)
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static int uniphier_reset_update(struct reset_controller_dev *rcdev,
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unsigned long id, int assert)
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{
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struct uniphier_reset_priv *priv = to_uniphier_reset_priv(rcdev);
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const struct uniphier_reset_data *p;
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for (p = priv->data; p->id != UNIPHIER_RESET_ID_END; p++) {
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unsigned int mask, val;
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if (p->id != id)
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continue;
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mask = BIT(p->bit);
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if (assert)
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val = mask;
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else
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val = ~mask;
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if (p->flags & UNIPHIER_RESET_ACTIVE_LOW)
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val = ~val;
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return regmap_write_bits(priv->regmap, p->reg, mask, val);
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}
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dev_err(priv->dev, "reset_id=%lu was not handled\n", id);
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return -EINVAL;
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}
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static int uniphier_reset_assert(struct reset_controller_dev *rcdev,
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unsigned long id)
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{
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return uniphier_reset_update(rcdev, id, 1);
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}
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static int uniphier_reset_deassert(struct reset_controller_dev *rcdev,
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unsigned long id)
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{
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return uniphier_reset_update(rcdev, id, 0);
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}
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static int uniphier_reset_status(struct reset_controller_dev *rcdev,
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unsigned long id)
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{
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struct uniphier_reset_priv *priv = to_uniphier_reset_priv(rcdev);
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const struct uniphier_reset_data *p;
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for (p = priv->data; p->id != UNIPHIER_RESET_ID_END; p++) {
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unsigned int val;
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int ret, asserted;
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if (p->id != id)
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continue;
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ret = regmap_read(priv->regmap, p->reg, &val);
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if (ret)
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return ret;
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asserted = !!(val & BIT(p->bit));
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if (p->flags & UNIPHIER_RESET_ACTIVE_LOW)
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asserted = !asserted;
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return asserted;
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}
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dev_err(priv->dev, "reset_id=%lu was not found\n", id);
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return -EINVAL;
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}
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static const struct reset_control_ops uniphier_reset_ops = {
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.assert = uniphier_reset_assert,
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.deassert = uniphier_reset_deassert,
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.status = uniphier_reset_status,
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};
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static int uniphier_reset_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct uniphier_reset_priv *priv;
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const struct uniphier_reset_data *p, *data;
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struct regmap *regmap;
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struct device_node *parent;
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unsigned int nr_resets = 0;
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data = of_device_get_match_data(dev);
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if (WARN_ON(!data))
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return -EINVAL;
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parent = of_get_parent(dev->of_node); /* parent should be syscon node */
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regmap = syscon_node_to_regmap(parent);
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of_node_put(parent);
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if (IS_ERR(regmap)) {
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dev_err(dev, "failed to get regmap (error %ld)\n",
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PTR_ERR(regmap));
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return PTR_ERR(regmap);
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}
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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for (p = data; p->id != UNIPHIER_RESET_ID_END; p++)
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nr_resets = max(nr_resets, p->id + 1);
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priv->rcdev.ops = &uniphier_reset_ops;
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priv->rcdev.owner = dev->driver->owner;
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priv->rcdev.of_node = dev->of_node;
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priv->rcdev.nr_resets = nr_resets;
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priv->dev = dev;
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priv->regmap = regmap;
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priv->data = data;
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return devm_reset_controller_register(&pdev->dev, &priv->rcdev);
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}
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static const struct of_device_id uniphier_reset_match[] = {
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/* System reset */
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{
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.compatible = "socionext,uniphier-ld4-reset",
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.data = uniphier_ld4_sys_reset_data,
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},
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{
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.compatible = "socionext,uniphier-pro4-reset",
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.data = uniphier_pro4_sys_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-sld8-reset",
|
|
.data = uniphier_ld4_sys_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pro5-reset",
|
|
.data = uniphier_pro5_sys_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pxs2-reset",
|
|
.data = uniphier_pxs2_sys_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-ld11-reset",
|
|
.data = uniphier_ld11_sys_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-ld20-reset",
|
|
.data = uniphier_ld20_sys_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pxs3-reset",
|
|
.data = uniphier_pxs3_sys_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-nx1-reset",
|
|
.data = uniphier_nx1_sys_reset_data,
|
|
},
|
|
/* Media I/O reset, SD reset */
|
|
{
|
|
.compatible = "socionext,uniphier-ld4-mio-reset",
|
|
.data = uniphier_ld4_mio_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pro4-mio-reset",
|
|
.data = uniphier_ld4_mio_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-sld8-mio-reset",
|
|
.data = uniphier_ld4_mio_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pro5-sd-reset",
|
|
.data = uniphier_pro5_sd_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pxs2-sd-reset",
|
|
.data = uniphier_pro5_sd_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-ld11-mio-reset",
|
|
.data = uniphier_ld4_mio_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-ld11-sd-reset",
|
|
.data = uniphier_pro5_sd_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-ld20-sd-reset",
|
|
.data = uniphier_pro5_sd_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pxs3-sd-reset",
|
|
.data = uniphier_pro5_sd_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-nx1-sd-reset",
|
|
.data = uniphier_pro5_sd_reset_data,
|
|
},
|
|
/* Peripheral reset */
|
|
{
|
|
.compatible = "socionext,uniphier-ld4-peri-reset",
|
|
.data = uniphier_ld4_peri_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pro4-peri-reset",
|
|
.data = uniphier_pro4_peri_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-sld8-peri-reset",
|
|
.data = uniphier_ld4_peri_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pro5-peri-reset",
|
|
.data = uniphier_pro4_peri_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pxs2-peri-reset",
|
|
.data = uniphier_pro4_peri_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-ld11-peri-reset",
|
|
.data = uniphier_pro4_peri_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-ld20-peri-reset",
|
|
.data = uniphier_pro4_peri_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-pxs3-peri-reset",
|
|
.data = uniphier_pro4_peri_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-nx1-peri-reset",
|
|
.data = uniphier_pro4_peri_reset_data,
|
|
},
|
|
/* Analog signal amplifiers reset */
|
|
{
|
|
.compatible = "socionext,uniphier-ld11-adamv-reset",
|
|
.data = uniphier_ld11_adamv_reset_data,
|
|
},
|
|
{
|
|
.compatible = "socionext,uniphier-ld20-adamv-reset",
|
|
.data = uniphier_ld11_adamv_reset_data,
|
|
},
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, uniphier_reset_match);
|
|
|
|
static struct platform_driver uniphier_reset_driver = {
|
|
.probe = uniphier_reset_probe,
|
|
.driver = {
|
|
.name = "uniphier-reset",
|
|
.of_match_table = uniphier_reset_match,
|
|
},
|
|
};
|
|
module_platform_driver(uniphier_reset_driver);
|
|
|
|
MODULE_AUTHOR("Masahiro Yamada <yamada.masahiro@socionext.com>");
|
|
MODULE_DESCRIPTION("UniPhier Reset Controller Driver");
|
|
MODULE_LICENSE("GPL");
|