+
+/* These functions are shared between various SoCs so put them here. */
+#if defined CONFIG_SUNXI_GEN_SUN6I && !defined CONFIG_MACH_SUN9I
+int clock_twi_onoff(int port, int state)
+{
+ struct sunxi_ccm_reg *const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+
+ if (port == 5) {
+ if (state)
+ prcm_apb0_enable(
+ PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C);
+ else
+ prcm_apb0_disable(
+ PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C);
+ return 0;
+ }
+
+ /* set the apb clock gate and reset for twi */
+ if (state) {
+ setbits_le32(&ccm->apb2_gate,
+ CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port));
+ setbits_le32(&ccm->apb2_reset_cfg,
+ 1 << (APB2_RESET_TWI_SHIFT + port));
+ } else {
+ clrbits_le32(&ccm->apb2_reset_cfg,
+ 1 << (APB2_RESET_TWI_SHIFT + port));
+ clrbits_le32(&ccm->apb2_gate,
+ CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port));
+ }
+
+ return 0;
+}
+#endif