can: cc770: add driver core for the Bosch CC770 and Intel AN82527

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 33 insertions, 0 deletions

diff --git a/include/linux/can/platform/cc770.h b/include/linux/can/platform/cc770.h
new file mode 100644
index 000000000000..7702641f87ee
--- /dev/null
+++ b/include/linux/can/platform/cc770.h
@@ -0,0 +1,33 @@
+#ifndef _CAN_PLATFORM_CC770_H_
+#define _CAN_PLATFORM_CC770_H_
+
+/* CPU Interface Register (0x02) */
+#define CPUIF_CEN       0x01    /* Clock Out Enable */
+#define CPUIF_MUX       0x04    /* Multiplex */
+#define CPUIF_SLP       0x08    /* Sleep */
+#define CPUIF_PWD       0x10    /* Power Down Mode */
+#define CPUIF_DMC       0x20    /* Divide Memory Clock */
+#define CPUIF_DSC       0x40    /* Divide System Clock */
+#define CPUIF_RST       0x80    /* Hardware Reset Status */
+
+/* Clock Out Register (0x1f) */
+#define CLKOUT_CD_MASK  0x0f    /* Clock Divider mask */
+#define CLKOUT_SL_MASK  0x30    /* Slew Rate mask */
+#define CLKOUT_SL_SHIFT 4
+
+/* Bus Configuration Register (0x2f) */
+#define BUSCFG_DR0      0x01    /* Disconnect RX0 Input / Select RX input */
+#define BUSCFG_DR1      0x02    /* Disconnect RX1 Input / Silent mode */
+#define BUSCFG_DT1      0x08    /* Disconnect TX1 Output */
+#define BUSCFG_POL      0x20    /* Polarity dominant or recessive */
+#define BUSCFG_CBY      0x40    /* Input Comparator Bypass */
+
+struct cc770_platform_data {
+        u32 osc_freq;   /* CAN bus oscillator frequency in Hz */
+
+        u8 cir;         /* CPU Interface Register */
+        u8 cor;         /* Clock Out Register */
+        u8 bcr;         /* Bus Configuration Register */
+};
+
+#endif  /* !_CAN_PLATFORM_CC770_H_ */