[RFC PATCH 09/10] i2c: Remove I2C_HYDRA

[Michael Ellerman <mpe@ellerman.id.au>]

The i2c-hydra driver depends on PPC_CHRP which has now been removed,
remove the driver also.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
 drivers/i2c/busses/Kconfig     |  12 ---
 drivers/i2c/busses/Makefile    |   1 -
 drivers/i2c/busses/i2c-hydra.c | 150 ---------------------------------
 3 files changed, 163 deletions(-)
 delete mode 100644 drivers/i2c/busses/i2c-hydra.c

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 6b3ba7e5723a..cbd072955e45 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -373,18 +373,6 @@ endif # ACPI
 comment "Mac SMBus host controller drivers"
 	depends on PPC_CHRP || PPC_PMAC
 
-config I2C_HYDRA
-	tristate "CHRP Apple Hydra Mac I/O I2C interface"
-	depends on PCI && PPC_CHRP
-	select I2C_ALGOBIT
-	help
-	  This supports the use of the I2C interface in the Apple Hydra Mac
-	  I/O chip on some CHRP machines (e.g. the LongTrail).  Say Y if you
-	  have such a machine.
-
-	  This support is also available as a module.  If so, the module
-	  will be called i2c-hydra.
-
 config I2C_POWERMAC
 	tristate "Powermac I2C interface"
 	depends on PPC_PMAC
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index ecc07c50f2a0..ab366ce6f15c 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -32,7 +32,6 @@ obj-$(CONFIG_I2C_VIAPRO)	+= i2c-viapro.o
 obj-$(CONFIG_I2C_ZHAOXIN)	+= i2c-viai2c-zhaoxin.o i2c-viai2c-common.o
 
 # Mac SMBus host controller drivers
-obj-$(CONFIG_I2C_HYDRA)		+= i2c-hydra.o
 obj-$(CONFIG_I2C_POWERMAC)	+= i2c-powermac.o
 
 # Embedded system I2C/SMBus host controller drivers
diff --git a/drivers/i2c/busses/i2c-hydra.c b/drivers/i2c/busses/i2c-hydra.c
deleted file mode 100644
index c60b73e933cf..000000000000
--- a/drivers/i2c/busses/i2c-hydra.c
+++ /dev/null
@@ -1,150 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
-    i2c Support for the Apple `Hydra' Mac I/O
-
-    Copyright (c) 1999-2004 Geert Uytterhoeven <geert@linux-m68k.org>
-
-    Based on i2c Support for Via Technologies 82C586B South Bridge
-    Copyright (c) 1998, 1999 Kyösti Mälkki <kmalkki@cc.hut.fi>
-
-*/
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/types.h>
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-#include <linux/io.h>
-#include <asm/hydra.h>
-
-
-#define HYDRA_CPD_PD0	0x00000001	/* CachePD lines */
-#define HYDRA_CPD_PD1	0x00000002
-#define HYDRA_CPD_PD2	0x00000004
-#define HYDRA_CPD_PD3	0x00000008
-
-#define HYDRA_SCLK	HYDRA_CPD_PD0
-#define HYDRA_SDAT	HYDRA_CPD_PD1
-#define HYDRA_SCLK_OE	0x00000010
-#define HYDRA_SDAT_OE	0x00000020
-
-static inline void pdregw(void *data, u32 val)
-{
-	struct Hydra *hydra = (struct Hydra *)data;
-	writel(val, &hydra->CachePD);
-}
-
-static inline u32 pdregr(void *data)
-{
-	struct Hydra *hydra = (struct Hydra *)data;
-	return readl(&hydra->CachePD);
-}
-
-static void hydra_bit_setscl(void *data, int state)
-{
-	u32 val = pdregr(data);
-	if (state)
-		val &= ~HYDRA_SCLK_OE;
-	else {
-		val &= ~HYDRA_SCLK;
-		val |= HYDRA_SCLK_OE;
-	}
-	pdregw(data, val);
-}
-
-static void hydra_bit_setsda(void *data, int state)
-{
-	u32 val = pdregr(data);
-	if (state)
-		val &= ~HYDRA_SDAT_OE;
-	else {
-		val &= ~HYDRA_SDAT;
-		val |= HYDRA_SDAT_OE;
-	}
-	pdregw(data, val);
-}
-
-static int hydra_bit_getscl(void *data)
-{
-	return (pdregr(data) & HYDRA_SCLK) != 0;
-}
-
-static int hydra_bit_getsda(void *data)
-{
-	return (pdregr(data) & HYDRA_SDAT) != 0;
-}
-
-/* ------------------------------------------------------------------------ */
-
-static struct i2c_algo_bit_data hydra_bit_data = {
-	.setsda		= hydra_bit_setsda,
-	.setscl		= hydra_bit_setscl,
-	.getsda		= hydra_bit_getsda,
-	.getscl		= hydra_bit_getscl,
-	.udelay		= 5,
-	.timeout	= HZ
-};
-
-static struct i2c_adapter hydra_adap = {
-	.owner		= THIS_MODULE,
-	.name		= "Hydra i2c",
-	.algo_data	= &hydra_bit_data,
-};
-
-static const struct pci_device_id hydra_ids[] = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_HYDRA) },
-	{ 0, }
-};
-
-MODULE_DEVICE_TABLE (pci, hydra_ids);
-
-static int hydra_probe(struct pci_dev *dev,
-				 const struct pci_device_id *id)
-{
-	unsigned long base = pci_resource_start(dev, 0);
-	int res;
-
-	if (!request_mem_region(base+offsetof(struct Hydra, CachePD), 4,
-				hydra_adap.name))
-		return -EBUSY;
-
-	hydra_bit_data.data = pci_ioremap_bar(dev, 0);
-	if (hydra_bit_data.data == NULL) {
-		release_mem_region(base+offsetof(struct Hydra, CachePD), 4);
-		return -ENODEV;
-	}
-
-	pdregw(hydra_bit_data.data, 0);		/* clear SCLK_OE and SDAT_OE */
-	hydra_adap.dev.parent = &dev->dev;
-	res = i2c_bit_add_bus(&hydra_adap);
-	if (res < 0) {
-		iounmap(hydra_bit_data.data);
-		release_mem_region(base+offsetof(struct Hydra, CachePD), 4);
-		return res;
-	}
-	return 0;
-}
-
-static void hydra_remove(struct pci_dev *dev)
-{
-	pdregw(hydra_bit_data.data, 0);		/* clear SCLK_OE and SDAT_OE */
-	i2c_del_adapter(&hydra_adap);
-	iounmap(hydra_bit_data.data);
-	release_mem_region(pci_resource_start(dev, 0)+
-			   offsetof(struct Hydra, CachePD), 4);
-}
-
-
-static struct pci_driver hydra_driver = {
-	.name		= "hydra_smbus",
-	.id_table	= hydra_ids,
-	.probe		= hydra_probe,
-	.remove		= hydra_remove,
-};
-
-module_pci_driver(hydra_driver);
-
-MODULE_AUTHOR("Geert Uytterhoeven <geert@linux-m68k.org>");
-MODULE_DESCRIPTION("i2c for Apple Hydra Mac I/O");
-MODULE_LICENSE("GPL");
-- 
2.47.0