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Re: [PATCH 1/3] MIPS: Octeon: Add I2C platform driver.

To: David Daney <ddaney@caviumnetworks.com>
Subject: Re: [PATCH 1/3] MIPS: Octeon: Add I2C platform driver.
From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Date: Thu, 07 Jan 2010 23:35:47 +0300
Cc: linux-mips@linux-mips.org, ralf@linux-mips.org, linux-i2c@vger.kernel.org, ben-linux@fluff.org, khali@linux-fr.org, rade.bozic.ext@nsn.com
In-reply-to: <1262894061-32613-1-git-send-email-ddaney@caviumnetworks.com>
References: <4B463B1F.6000404@caviumnetworks.com> <1262894061-32613-1-git-send-email-ddaney@caviumnetworks.com>
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Hello.

David Daney wrote:

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
CC: Rade Bozic <rade.bozic.ext@nsn.com>
[...]
diff --git a/arch/mips/cavium-octeon/octeon-platform.c 
b/arch/mips/cavium-octeon/octeon-platform.c
index 20698a6..f2c0602 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -165,6 +165,78 @@ out:
 }
 device_initcall(octeon_rng_device_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_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 + 0x20;

  Not 0x1F?

WBR, Sergei



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