ARM: OMAP2+: Use pdata-quirks for sgx deassert hardreset

Use pdata_quirks to provide platform data to the sgx driver. This is
used to provide a function pointer for the sgx driver to access
omap_device_deassert_hardreset along with the reset name as defined in
the corresponding hwmod entry

This platform data will not be required when a separate reset driver is
available allowing decoupling from omap hwmod and omap device

Signed-off-by: Darren Etheridge <detheridge@ti.com>
Signed-off-by: Eric Ruei <e-ruei1@ti.com>
Signed-off-by: Anand Balagopalakrishnan <anandb@ti.com>
[praneeth@ti.com: rebase from graphics-ti-linux-4.14.y]
Signed-off-by: Praneeth Bajjuri <praneeth@ti.com>

arch/arm/mach-omap2/pdata-quirks.c

@@ -27,6 +27,7 @@
 #include <linux/platform_data/ti-sysc.h>
 #include <linux/platform_data/wkup_m3.h>
 #include <linux/platform_data/asoc-ti-mcbsp.h>
+#include <linux/platform_data/sgx-omap.h>
 
 #include "common.h"
 #include "common-board-devices.h"
@@ -46,6 +47,14 @@ struct pdata_init {
 static struct of_dev_auxdata omap_auxdata_lookup[];
 static struct twl4030_gpio_platform_data twl_gpio_auxdata;
 
+#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
+static struct gfx_sgx_platform_data sgx_pdata = {
+	.reset_name = "gfx",
+	.assert_reset = omap_device_assert_hardreset,
+	.deassert_reset = omap_device_deassert_hardreset,
+};
+#endif
+
 #ifdef CONFIG_MACH_NOKIA_N8X0
 static void __init omap2420_n8x0_legacy_init(void)
 {
@@ -568,10 +577,14 @@ static struct of_dev_auxdata omap_auxdata_lookup[] = {
 #ifdef CONFIG_SOC_AM33XX
 	OF_DEV_AUXDATA("ti,am3352-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
 		       &wkup_m3_data),
+	OF_DEV_AUXDATA("ti,am3352-sgx530", 0x56000000, "56000000.sgx",
+		       &sgx_pdata),
 #endif
 #ifdef CONFIG_SOC_AM43XX
 	OF_DEV_AUXDATA("ti,am4372-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
 		       &wkup_m3_data),
+	OF_DEV_AUXDATA("ti,am4376-sgx530", 0x56000000, "56000000.sgx",
+		       &sgx_pdata),
 #endif
 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
 	OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",

include/linux/platform_data/sgx-omap.h

@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * SGX Graphics Driver Platform Data
+ *
+ * Copyright (C) 2014-2019 Texas Instruments Incorporated - http://www.ti.com/
+ *	Darren Etheridge <detheridge@ti.com>
+ *
+ */
+
+#ifndef __SGX_OMAP_H__
+#define __SGX_OMAP_H__
+
+#include <linux/platform_device.h>
+
+struct gfx_sgx_platform_data {
+	const char *reset_name;
+
+	int (*assert_reset)(struct platform_device *pdev, const char *name);
+	int (*deassert_reset)(struct platform_device *pdev, const char *name);
+};
+
+#endif