i2c: Convert i2c-octeon.c to use device tree.

There are three parts to this:

1) Remove the definitions of OCTEON_IRQ_TWSI and OCTEON_IRQ_TWSI2.
   The interrupts are specified by the device tree and these hard
   coded irq numbers block the used of the irq lines by the irq_domain
   code.

2) Remove platform device setup code from octeon-platform.c, it is
   now unused.

3) Convert i2c-octeon.c to use device tree.  Part of this includes
   using the devm_* functions instead of the raw counterparts, thus
   simplifying error handling.  No functionality is changed.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: linux-mips@linux-mips.org
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/3939/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 0 insertions, 91 deletions

diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c
index 52610ce50dfc..2a661ad35cf7 100644
--- a/arch/mips/cavium-octeon/octeon-irq.c
+++ b/arch/mips/cavium-octeon/octeon-irq.c
@@ -1192,13 +1192,11 @@ static void __init octeon_irq_init_ciu(void)
         for (i = 0; i < 4; i++)
                 octeon_irq_set_ciu_mapping(i + OCTEON_IRQ_PCI_MSI0, 0, i + 40, chip, handle_level_irq);
 
-        octeon_irq_set_ciu_mapping(OCTEON_IRQ_TWSI, 0, 45, chip, handle_level_irq);
         octeon_irq_set_ciu_mapping(OCTEON_IRQ_RML, 0, 46, chip, handle_level_irq);
         for (i = 0; i < 4; i++)
                 octeon_irq_set_ciu_mapping(i + OCTEON_IRQ_TIMER0, 0, i + 52, chip, handle_edge_irq);
 
         octeon_irq_set_ciu_mapping(OCTEON_IRQ_USB0, 0, 56, chip, handle_level_irq);
-        octeon_irq_set_ciu_mapping(OCTEON_IRQ_TWSI2, 0, 59, chip, handle_level_irq);
         octeon_irq_set_ciu_mapping(OCTEON_IRQ_MII0, 0, 62, chip, handle_level_irq);
         octeon_irq_set_ciu_mapping(OCTEON_IRQ_BOOTDMA, 0, 63, chip, handle_level_irq);
 
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index 2754bc225903..f62a40f424ca 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -168,90 +168,6 @@ out:
 }
 device_initcall(octeon_rng_device_init);
 
-static struct i2c_board_info __initdata octeon_i2c_devices[] = {
-        {
-                I2C_BOARD_INFO("ds1337", 0x68),
-        },
-};
-
-static int __init octeon_i2c_devices_init(void)
-{
-        return i2c_register_board_info(0, octeon_i2c_devices,
-                                       ARRAY_SIZE(octeon_i2c_devices));
-}
-arch_initcall(octeon_i2c_devices_init);
-
-#define OCTEON_I2C_IO_BASE 0x1180000001000ull
-#define OCTEON_I2C_IO_UNIT_OFFSET 0x200
-
-static struct octeon_i2c_data octeon_i2c_data[2];
-
-static int __init octeon_i2c_device_init(void)
-{
-        struct platform_device *pd;
-        int ret = 0;
-        int port, num_ports;
-
-        struct resource i2c_resources[] = {
-                {
-                        .flags  = IORESOURCE_MEM,
-                }, {
-                        .flags  = IORESOURCE_IRQ,
-                }
-        };
-
-        if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX))
-                num_ports = 2;
-        else
-                num_ports = 1;
-
-        for (port = 0; port < num_ports; port++) {
-                octeon_i2c_data[port].sys_freq = octeon_get_io_clock_rate();
-                /*FIXME: should be examined. At the moment is set for 100Khz */
-                octeon_i2c_data[port].i2c_freq = 100000;
-
-                pd = platform_device_alloc("i2c-octeon", port);
-                if (!pd) {
-                        ret = -ENOMEM;
-                        goto out;
-                }
-
-                pd->dev.platform_data = octeon_i2c_data + port;
-
-                i2c_resources[0].start =
-                        OCTEON_I2C_IO_BASE + (port * OCTEON_I2C_IO_UNIT_OFFSET);
-                i2c_resources[0].end = i2c_resources[0].start + 0x1f;
-                switch (port) {
-                case 0:
-                        i2c_resources[1].start = OCTEON_IRQ_TWSI;
-                        i2c_resources[1].end = OCTEON_IRQ_TWSI;
-                        break;
-                case 1:
-                        i2c_resources[1].start = OCTEON_IRQ_TWSI2;
-                        i2c_resources[1].end = OCTEON_IRQ_TWSI2;
-                        break;
-                default:
-                        BUG();
-                }
-
-                ret = platform_device_add_resources(pd,
-                                                    i2c_resources,
-                                                    ARRAY_SIZE(i2c_resources));
-                if (ret)
-                        goto fail;
-
-                ret = platform_device_add(pd);
-                if (ret)
-                        goto fail;
-        }
-        return ret;
-fail:
-        platform_device_put(pd);
-out:
-        return ret;
-}
-device_initcall(octeon_i2c_device_init);
-
 /* Octeon SMI/MDIO interface.  */
 static int __init octeon_mdiobus_device_init(void)
 {
diff --git a/arch/mips/include/asm/octeon/octeon.h b/arch/mips/include/asm/octeon/octeon.h
index f72f768cd3a4..1e2486e23573 100644
--- a/arch/mips/include/asm/octeon/octeon.h
+++ b/arch/mips/include/asm/octeon/octeon.h
@@ -215,11 +215,6 @@ struct octeon_cf_data {
         int             dma_engine;     /* -1 for no DMA */
 };
 
-struct octeon_i2c_data {
-        unsigned int    sys_freq;
-        unsigned int    i2c_freq;
-};
-
 extern void octeon_write_lcd(const char *s);
 extern void octeon_check_cpu_bist(void);
 extern int octeon_get_boot_debug_flag(void);