Patchwork [8/8] i2c: imx: Add Vybrid VF610 I2C controller support

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Submitter Jingchang Lu
Date Aug. 7, 2013, 9:05 a.m.
Message ID <1375866343-2074-8-git-send-email-b35083@freescale.com>
Download mbox | patch
Permalink /patch/265457/
State Accepted
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Jingchang Lu - Aug. 7, 2013, 9:05 a.m.
Add Freescale Vybrid VF610 I2C controller support to
imx I2C driver framework.

Signed-off-by: Jason Jin <Jason.jin@freescale.com>
Signed-off-by: Jingchang Lu <b35083@freescale.com>
---
 drivers/i2c/busses/i2c-imx.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

Patch

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index ce31196..9c0f8bd 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -79,6 +79,7 @@ 
 #define IMX_I2C_I2DR	0x04	/* i2c transfer data */
 
 #define IMX_I2C_REGSHIFT	2
+#define VF610_I2C_REGSHIFT	0
 
 /* Bits of IMX I2C registers */
 #define I2SR_RXAK	0x01
@@ -140,9 +141,29 @@  static struct imx_i2c_clk_pair imx_i2c_clk_div[] = {
 	{ 3072,	0x1E }, { 3840,	0x1F }
 };
 
+/* Vybrid VF610 clock divider, register value pairs */
+static struct imx_i2c_clk_pair vf610_i2c_clk_div[] = {
+	{ 20,   0x00 }, { 22,   0x01 }, { 24,   0x02 }, { 26,   0x03 },
+	{ 28,   0x04 }, { 30,   0x05 }, { 32,   0x09 }, { 34,   0x06 },
+	{ 36,   0x0A }, { 40,   0x07 }, { 44,   0x0C }, { 48,   0x0D },
+	{ 52,   0x43 }, { 56,   0x0E }, { 60,   0x45 }, { 64,   0x12 },
+	{ 68,   0x0F }, { 72,   0x13 }, { 80,   0x14 }, { 88,   0x15 },
+	{ 96,   0x19 }, { 104,  0x16 }, { 112,  0x1A }, { 128,  0x17 },
+	{ 136,  0x4F }, { 144,  0x1C }, { 160,  0x1D }, { 176,  0x55 },
+	{ 192,  0x1E }, { 208,  0x56 }, { 224,  0x22 }, { 228,  0x24 },
+	{ 240,  0x1F }, { 256,  0x23 }, { 288,  0x5C }, { 320,  0x25 },
+	{ 384,  0x26 }, { 448,  0x2A }, { 480,  0x27 }, { 512,  0x2B },
+	{ 576,  0x2C }, { 640,  0x2D }, { 768,  0x31 }, { 896,  0x32 },
+	{ 960,  0x2F }, { 1024, 0x33 }, { 1152, 0x34 }, { 1280, 0x35 },
+	{ 1536, 0x36 }, { 1792, 0x3A }, { 1920, 0x37 }, { 2048, 0x3B },
+	{ 2304, 0x3C }, { 2560, 0x3D }, { 3072, 0x3E }, { 3584, 0x7A },
+	{ 3840, 0x3F }, { 4096, 0x7B }, { 5120, 0x7D }, { 6144, 0x7E },
+};
+
 enum imx_i2c_type {
 	IMX1_I2C,
 	IMX21_I2C,
+	VF610_I2C,
 };
 
 struct imx_i2c_hwdata {
@@ -186,6 +207,16 @@  static const struct imx_i2c_hwdata imx21_i2c_hwdata  = {
 
 };
 
+static struct imx_i2c_hwdata vf610_i2c_hwdata = {
+	.devtype		= VF610_I2C,
+	.regshift		= VF610_I2C_REGSHIFT,
+	.clk_div		= vf610_i2c_clk_div,
+	.ndivs			= ARRAY_SIZE(vf610_i2c_clk_div),
+	.i2sr_clr_opcode	= I2SR_CLR_OPCODE_W1C,
+	.i2cr_ien_opcode	= I2CR_IEN_OPCODE_0,
+
+};
+
 static struct platform_device_id imx_i2c_devtype[] = {
 	{
 		.name = "imx1-i2c",
@@ -202,6 +233,7 @@  MODULE_DEVICE_TABLE(platform, imx_i2c_devtype);
 static const struct of_device_id i2c_imx_dt_ids[] = {
 	{ .compatible = "fsl,imx1-i2c", .data = &imx1_i2c_hwdata, },
 	{ .compatible = "fsl,imx21-i2c", .data = &imx21_i2c_hwdata, },
+	{ .compatible = "fsl,vf610-i2c", .data = &vf610_i2c_hwdata, },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, i2c_imx_dt_ids);