diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/810-v5.8-i2c-pxa-move-private-definitions-to-i2c-pxa.c.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/810-v5.8-i2c-pxa-move-private-definitions-to-i2c-pxa.c.patch | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/810-v5.8-i2c-pxa-move-private-definitions-to-i2c-pxa.c.patch b/target/linux/generic/backport-5.4/810-v5.8-i2c-pxa-move-private-definitions-to-i2c-pxa.c.patch new file mode 100644 index 0000000000..a7bbdd9546 --- /dev/null +++ b/target/linux/generic/backport-5.4/810-v5.8-i2c-pxa-move-private-definitions-to-i2c-pxa.c.patch @@ -0,0 +1,135 @@ +From: Russell King <rmk+kernel@armlinux.org.uk> +Bcc: linux@mail.armlinux.org.uk +Cc: linux-i2c@vger.kernel.org +Subject: [PATCH 08/17] i2c: pxa: move private definitions to i2c-pxa.c +MIME-Version: 1.0 +Content-Disposition: inline +Content-Transfer-Encoding: 8bit +Content-Type: text/plain; charset="utf-8" + +Move driver-private definitions out of the i2c-pxa.h platform data +header file into the driver itself. Nothing outside of the driver +makes use of these constants. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/i2c/busses/i2c-pxa.c | 43 ++++++++++++++++++++++++ + include/linux/platform_data/i2c-pxa.h | 48 --------------------------- + 2 files changed, 43 insertions(+), 48 deletions(-) + +diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c +index 05dbe6bf4633..482768a9fdd2 100644 +--- a/drivers/i2c/busses/i2c-pxa.c ++++ b/drivers/i2c/busses/i2c-pxa.c +@@ -86,6 +86,49 @@ + #define IWCR_HS_CNT2_SHIFT 10 + #define IWCR_HS_CNT2_MASK (0x1F << IWCR_HS_CNT2_SHIFT) + ++/* need a longer timeout if we're dealing with the fact we may well be ++ * looking at a multi-master environment ++ */ ++#define DEF_TIMEOUT 32 ++ ++#define BUS_ERROR (-EREMOTEIO) ++#define XFER_NAKED (-ECONNREFUSED) ++#define I2C_RETRY (-2000) /* an error has occurred retry transmit */ ++ ++/* ICR initialize bit values ++ * ++ * 15 FM 0 (100 kHz operation) ++ * 14 UR 0 (No unit reset) ++ * 13 SADIE 0 (Disables the unit from interrupting on slave addresses ++ * matching its slave address) ++ * 12 ALDIE 0 (Disables the unit from interrupt when it loses arbitration ++ * in master mode) ++ * 11 SSDIE 0 (Disables interrupts from a slave stop detected, in slave mode) ++ * 10 BEIE 1 (Enable interrupts from detected bus errors, no ACK sent) ++ * 9 IRFIE 1 (Enable interrupts from full buffer received) ++ * 8 ITEIE 1 (Enables the I2C unit to interrupt when transmit buffer empty) ++ * 7 GCD 1 (Disables i2c unit response to general call messages as a slave) ++ * 6 IUE 0 (Disable unit until we change settings) ++ * 5 SCLE 1 (Enables the i2c clock output for master mode (drives SCL) ++ * 4 MA 0 (Only send stop with the ICR stop bit) ++ * 3 TB 0 (We are not transmitting a byte initially) ++ * 2 ACKNAK 0 (Send an ACK after the unit receives a byte) ++ * 1 STOP 0 (Do not send a STOP) ++ * 0 START 0 (Do not send a START) ++ */ ++#define I2C_ICR_INIT (ICR_BEIE | ICR_IRFIE | ICR_ITEIE | ICR_GCD | ICR_SCLE) ++ ++/* I2C status register init values ++ * ++ * 10 BED 1 (Clear bus error detected) ++ * 9 SAD 1 (Clear slave address detected) ++ * 7 IRF 1 (Clear IDBR Receive Full) ++ * 6 ITE 1 (Clear IDBR Transmit Empty) ++ * 5 ALD 1 (Clear Arbitration Loss Detected) ++ * 4 SSD 1 (Clear Slave Stop Detected) ++ */ ++#define I2C_ISR_INIT 0x7FF /* status register init */ ++ + struct pxa_reg_layout { + u32 ibmr; + u32 idbr; +diff --git a/include/linux/platform_data/i2c-pxa.h b/include/linux/platform_data/i2c-pxa.h +index cb290092599c..5c08a6ff3444 100644 +--- a/include/linux/platform_data/i2c-pxa.h ++++ b/include/linux/platform_data/i2c-pxa.h +@@ -7,54 +7,6 @@ + #ifndef _I2C_PXA_H_ + #define _I2C_PXA_H_ + +-#if 0 +-#define DEF_TIMEOUT 3 +-#else +-/* need a longer timeout if we're dealing with the fact we may well be +- * looking at a multi-master environment +-*/ +-#define DEF_TIMEOUT 32 +-#endif +- +-#define BUS_ERROR (-EREMOTEIO) +-#define XFER_NAKED (-ECONNREFUSED) +-#define I2C_RETRY (-2000) /* an error has occurred retry transmit */ +- +-/* ICR initialize bit values +-* +-* 15. FM 0 (100 Khz operation) +-* 14. UR 0 (No unit reset) +-* 13. SADIE 0 (Disables the unit from interrupting on slave addresses +-* matching its slave address) +-* 12. ALDIE 0 (Disables the unit from interrupt when it loses arbitration +-* in master mode) +-* 11. SSDIE 0 (Disables interrupts from a slave stop detected, in slave mode) +-* 10. BEIE 1 (Enable interrupts from detected bus errors, no ACK sent) +-* 9. IRFIE 1 (Enable interrupts from full buffer received) +-* 8. ITEIE 1 (Enables the I2C unit to interrupt when transmit buffer empty) +-* 7. GCD 1 (Disables i2c unit response to general call messages as a slave) +-* 6. IUE 0 (Disable unit until we change settings) +-* 5. SCLE 1 (Enables the i2c clock output for master mode (drives SCL) +-* 4. MA 0 (Only send stop with the ICR stop bit) +-* 3. TB 0 (We are not transmitting a byte initially) +-* 2. ACKNAK 0 (Send an ACK after the unit receives a byte) +-* 1. STOP 0 (Do not send a STOP) +-* 0. START 0 (Do not send a START) +-* +-*/ +-#define I2C_ICR_INIT (ICR_BEIE | ICR_IRFIE | ICR_ITEIE | ICR_GCD | ICR_SCLE) +- +-/* I2C status register init values +- * +- * 10. BED 1 (Clear bus error detected) +- * 9. SAD 1 (Clear slave address detected) +- * 7. IRF 1 (Clear IDBR Receive Full) +- * 6. ITE 1 (Clear IDBR Transmit Empty) +- * 5. ALD 1 (Clear Arbitration Loss Detected) +- * 4. SSD 1 (Clear Slave Stop Detected) +- */ +-#define I2C_ISR_INIT 0x7FF /* status register init */ +- + struct i2c_slave_client; + + struct i2c_pxa_platform_data { +-- +2.20.1 + |