len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-08 12:45:26 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

rk27xx: substitute magic constants with meaningful names for clock gating

Browse source 
Change-Id: I6c66c7496db3db78e5c959414464826134dbe200
This commit is contained in:
Marcin Bukat 2012-12-17 08:44:09 +01:00
parent 1fa406dc21
commit 2b6dfdb34e
9 changed files with 66 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

12
firmware/target/arm/rk27xx/i2c-rk27xx.c
View file

@ -123,7 +123,7 @@ void i2c_init(void)
/* ungate i2c module clock */
SCU_CLKCFG &= ~(1<< 20);
SCU_CLKCFG &= ~CLKCFG_I2C;
I2C_OPR |= (1<<7); /* reset state machine */
sleep(HZ/100);
@ -146,7 +146,7 @@ void i2c_init(void)
I2C_OPR |= (1<<6); /* enable i2c core */
/* turn off i2c module clock until we need to comunicate */
SCU_CLKCFG |= (1<< 20);
SCU_CLKCFG |= CLKCFG_I2C;
}
int i2c_write(unsigned char slave, int address, int len,
@ -159,7 +159,7 @@ int i2c_write(unsigned char slave, int address, int len,
i2c_iomux(slave);
/* ungate i2c clock */
SCU_CLKCFG &= ~(1<<20);
SCU_CLKCFG &= ~CLKCFG_I2C;
/* clear all flags */
I2C_ISR = 0x00;
@ -200,7 +200,7 @@ int i2c_write(unsigned char slave, int address, int len,
end:
mutex_unlock(&i2c_mtx);
SCU_CLKCFG |= (1<<20);
SCU_CLKCFG |= CLKCFG_I2C;
return ret;
}
@ -213,7 +213,7 @@ int i2c_read(unsigned char slave, int address, int len, unsigned char *data)
i2c_iomux(slave);
/* ungate i2c module clock */
SCU_CLKCFG &= ~(1<<20);
SCU_CLKCFG &= ~CLKCFG_I2C;
/* clear all flags */
I2C_ISR = 0x00;
@ -270,6 +270,6 @@ int i2c_read(unsigned char slave, int address, int len, unsigned char *data)
end:
mutex_unlock(&i2c_mtx);
SCU_CLKCFG |= (1<<20);
SCU_CLKCFG |= CLKCFG_I2C;
return ret;
}