diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-i2c.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-i2c.c | 59 |
1 files changed, 19 insertions, 40 deletions
diff --git a/drivers/media/video/cx18/cx18-i2c.c b/drivers/media/video/cx18/cx18-i2c.c index aa09e557b19..83e1c633312 100644 --- a/drivers/media/video/cx18/cx18-i2c.c +++ b/drivers/media/video/cx18/cx18-i2c.c @@ -4,6 +4,7 @@ * Derived from ivtv-i2c.c * * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> + * Copyright (C) 2008 Andy Walls <awalls@radix.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -27,6 +28,7 @@ #include "cx18-gpio.h" #include "cx18-av-core.h" #include "cx18-i2c.h" +#include "cx18-irq.h" #define CX18_REG_I2C_1_WR 0xf15000 #define CX18_REG_I2C_1_RD 0xf15008 @@ -160,9 +162,9 @@ static void cx18_setscl(void *data, int state) u32 r = cx18_read_reg(cx, addr); if (state) - cx18_write_reg_sync(cx, r | SETSCL_BIT, addr); + cx18_write_reg(cx, r | SETSCL_BIT, addr); else - cx18_write_reg_sync(cx, r & ~SETSCL_BIT, addr); + cx18_write_reg(cx, r & ~SETSCL_BIT, addr); } static void cx18_setsda(void *data, int state) @@ -173,9 +175,9 @@ static void cx18_setsda(void *data, int state) u32 r = cx18_read_reg(cx, addr); if (state) - cx18_write_reg_sync(cx, r | SETSDL_BIT, addr); + cx18_write_reg(cx, r | SETSDL_BIT, addr); else - cx18_write_reg_sync(cx, r & ~SETSDL_BIT, addr); + cx18_write_reg(cx, r & ~SETSDL_BIT, addr); } static int cx18_getscl(void *data) @@ -240,7 +242,7 @@ int cx18_call_i2c_client(struct cx18 *cx, int addr, unsigned cmd, void *arg) return retval; } } - if (cmd != VIDIOC_G_CHIP_IDENT) + if (cmd != VIDIOC_DBG_G_CHIP_IDENT) CX18_ERR("i2c addr 0x%02x not found for cmd 0x%x!\n", addr, cmd); return -ENODEV; @@ -266,17 +268,6 @@ static int cx18_i2c_id_addr(struct cx18 *cx, u32 id) return retval; } -/* Find the i2c device name matching the DRIVERID */ -static const char *cx18_i2c_id_name(u32 id) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(hw_driverids); i++) - if (hw_driverids[i] == id) - return hw_devicenames[i]; - return "unknown device"; -} - /* Find the i2c device name matching the CX18_HW_ flag */ static const char *cx18_i2c_hw_name(u32 hw) { @@ -324,21 +315,6 @@ int cx18_i2c_hw(struct cx18 *cx, u32 hw, unsigned int cmd, void *arg) return cx18_call_i2c_client(cx, addr, cmd, arg); } -/* Calls i2c device based on I2C driver ID. */ -int cx18_i2c_id(struct cx18 *cx, u32 id, unsigned int cmd, void *arg) -{ - int addr; - - addr = cx18_i2c_id_addr(cx, id); - if (addr < 0) { - if (cmd != VIDIOC_G_CHIP_IDENT) - CX18_ERR("i2c ID 0x%08x (%s) not found for cmd 0x%x!\n", - id, cx18_i2c_id_name(id), cmd); - return addr; - } - return cx18_call_i2c_client(cx, addr, cmd, arg); -} - /* broadcast cmd for all I2C clients and for the gpio subsystem */ void cx18_call_i2c_clients(struct cx18 *cx, unsigned int cmd, void *arg) { @@ -396,30 +372,33 @@ int init_cx18_i2c(struct cx18 *cx) if (cx18_read_reg(cx, CX18_REG_I2C_2_WR) != 0x0003c02f) { /* Reset/Unreset I2C hardware block */ /* Clock select 220MHz */ - cx18_write_reg(cx, 0x10000000, 0xc71004); + cx18_write_reg_expect(cx, 0x10000000, 0xc71004, + 0x00000000, 0x10001000); /* Clock Enable */ - cx18_write_reg_sync(cx, 0x10001000, 0xc71024); + cx18_write_reg_expect(cx, 0x10001000, 0xc71024, + 0x00001000, 0x10001000); } /* courtesy of Steven Toth <stoth@hauppauge.com> */ - cx18_write_reg_sync(cx, 0x00c00000, 0xc7001c); + cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0); mdelay(10); - cx18_write_reg_sync(cx, 0x00c000c0, 0xc7001c); + cx18_write_reg_expect(cx, 0x00c000c0, 0xc7001c, 0x000000c0, 0x00c000c0); mdelay(10); - cx18_write_reg_sync(cx, 0x00c00000, 0xc7001c); + cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0); mdelay(10); /* Set to edge-triggered intrs. */ - cx18_write_reg_sync(cx, 0x00c00000, 0xc730c8); + cx18_write_reg(cx, 0x00c00000, 0xc730c8); /* Clear any stale intrs */ - cx18_write_reg_sync(cx, 0x00c00000, 0xc730c4); + cx18_write_reg_expect(cx, HW2_I2C1_INT|HW2_I2C2_INT, HW2_INT_CLR_STATUS, + ~(HW2_I2C1_INT|HW2_I2C2_INT), HW2_I2C1_INT|HW2_I2C2_INT); /* Hw I2C1 Clock Freq ~100kHz */ - cx18_write_reg_sync(cx, 0x00021c0f & ~4, CX18_REG_I2C_1_WR); + cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_1_WR); cx18_setscl(&cx->i2c_algo_cb_data[0], 1); cx18_setsda(&cx->i2c_algo_cb_data[0], 1); /* Hw I2C2 Clock Freq ~100kHz */ - cx18_write_reg_sync(cx, 0x00021c0f & ~4, CX18_REG_I2C_2_WR); + cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_2_WR); cx18_setscl(&cx->i2c_algo_cb_data[1], 1); cx18_setsda(&cx->i2c_algo_cb_data[1], 1); |